dry cement mixing equipment bizrice com

nflg group website

Kazan is the capital of Tatarstan and is the economic, transportation and cultural center of the middle Volga region. Recently, President of Tatarstan Rustam Minnikhnov visited the asphalt mixing plant of NFLG's regular customer Alekseevskdorstroy in Kazan, accompanied by Minister of Agriculture of the Republic of Tatarstan Marat Zyabbarov and Mayor of Alekseevsk District Sergey Demido.

The 21st Russian International Trade Fair for Construction Equipment and Technologies (bauma CTT RUSSIA 2021) will be held in CRUCOS, the largest exhibition center in Moscow, Russia, from May 25 to 28, 2021. As a regular visitor of CTT Russia, NFLG will bring a full range of asphalt, commercial mix, dry mix and other construction mixing products to show the world the elegance of China's intellectual manufacturing.

Although bauma CHINA 2020 has ended, the excitement of NFLG continues. Starting from January 8th, the headquarters of NFLG in Quanzhou, Fujian will hold the "ValueGratitudeCommunity" factory open day event to show you the full range of products in the mixing field of NFLG, production workshops, cloud service interactive experience, and the research and development of the Mixing Academy, fully demonstrate the historical precipitation and future development direction of NFLG in the past 30 years.The following is a set of pictures to show, let's see it!

multicrete systems inc

Raise Robotic shotcreting. TheMulticrete Raise Robot is a remotely controlled robotic assembly for the spraying of shotcrete; used in shafts and raises of subterranean excavations. Multicrete Raise Robot isdesigned for use in mines and on large civil construction projects. Multicrete completed a 3.5 meter diameter X 300 meter raise with the following second raise, over 400 meters in depth for a mining project.

Rehabilitation Project of one of Reginas original Water Reservoirs, Albert Street. Shotcrete Placing was performed: careful application was specified keeping with Shotcrete Temperature, Surface Temperature, Relative Humidity, Determined Depth and Trial Certification of Nozzlemans Skill.

Cannabis Prairie Plant Underground Concrete Pour. Successful project utilizing Pre-mixed Dry Concrete Material to construct Floor Pour: a section of concrete flooring 180 feet underground in a section of a Mine.

Structural Reinforcement & Restoration Project: Library of Parliament Project in Ottawa.Multicrete Systems Inc. was entrusted with the structural reinforcement of one of Canadasmost famous historical landmarks. Multicrete deployed a team of senior engineers and shotcreting technicians to accomplish this task.

Light Rapid Transit (LRT) Edmonton, AB North Extension Project. Two concurrent 440-metre extensions (880 meters total) were tunnelled. Multicrete provided materials, equipment, knowledge and skill to shotcrete the exposed tunnel wall for stability. 2.138 metric ton (1 cubic meter) bags of pre-mixed shotcrete were used.

mixing concrete - dos and don'ts - bob vila

Concrete holds a place of honor in both the professional construction and do-it-yourself worlds. When mixed correctly, this simple combination of aggregate, cement, and water becomes strong and durable enough toproduce walkways, beautiful planters, walls, and even house foundations. While concrete trucks with perpetually rotating drumsdeliver mixedconcrete for large jobs, DIY concrete projects typically operate on a smaller scale, relying ondry sack concrete mixed withwater. The secret to a successful project lies in mixing the concrete correctly and knowing which tools to use. Sure, the old standbysa wheelbarrow and hoeare still adequate choices for mixing all-purpose concrete if you dont have access to a portable power mixer. But when it comes to wet-cast concrete, which is rapidly growing in popularity as a material for countertops and other castings, an impressive new tool promises to speed up the job: the HYDE StirWhip. To ensure satisfying results,read on to find out what you should (and shouldnt) do with thistrusty tool when youre mixing concrete.

Before you begin, run through your checklist one last time.You wont want to have to dig out a missing item once your hands are covered in wet concrete. At the top of your list will be the dry concrete mix and a water source. The tools youll need for mixing will depend on your choice of concrete:

Becausethe all-purpose concrete used in larger projects like sidewalks, slabs, or paver patios is quite thick and heavyand there will be a lot of itits a good idea to work with a sturdy wheelbarrow (one that wont tip over under the weight) and a hoe. Or, consider upgrading to a portableconcretemixer, which you can rent from a big-box home improvement center for around $50 a day.

To make countertops, balusters, or other small concrete accents with smoother finishes, youll want to whip up a wet-set concrete mix that consists of smaller bits of aggregate. Mix this in a large plastic bucket using a fully charged power drill and theunder-$10 StirWhip drill attachment. Because the StirWhip features an 18-inch-long, 3/8-inch-thick steel shank (unlike shorter mixing paddles), you can reach all the way to the bottom of a five-gallon bucket with ease so you wont leave any dry powder unmixed.The attachments multi-finger configuration helps reduce drag on your drill while slicing quickly through the mix for a smooth blend. Plus, those open fingers are easy to clean of wet or dried concrete when the job is done.

By calculating ahead of timethe amount of concrete your project requiresand adding 10 percent to ensure that you dont run shortyoull avoid cold joints, which occur when part of your project dries before you can mix and add the concrete needed to finish aproject. Not only will you probably notice a visualdifference between the first and second batches of concrete, but thosecold joints will be weak spots where the concrete is more likely to break later. (For reference:A standard 80-poundbag yields 0.60 cubic feetof concrete, while a 60-poundbag yields 0.45 cubic feet, and a 40-poundbag yields 0.30 cubic ft.)

This may come as a surprise to you if youve ever mixed concrete in a wheelbarrow, where you do add water to a heap of dry concrete mix. The wheelbarrows shape necessitates adding the mix firstthe shallow sloped sides of a wheelbarrow make it too easy for water to slosh out when mix is thrown on top. But thats not a hard-and-fast rule for mixingall concrete. When youre working in a bucket, youll want to put the water in first (and you can do so withoutfear of losing any) in order to keep the dry concretemix from sticking to the bottom of the bucketand making it difficult to blend. Once youve filled the bucket with the amount of water recommended by the concrete manufacturer, gradually trowel in the dry mix until youre ready to blendit with your drill andHYDE StirWhipattachment.

In order to set correctly, the water and the dry concrete ingredients must be thoroughly combined. A good rule of thumb: Continue mixing with a hoe or blending with a StirWhip for three minutes afteryou no longer see any pockets of mix that are still dry or water pooling at the top. Otherwise,you could end up with undermixed concretethat once cured could be weak and prone to crumbling and cracking.

Concrete consistency is determined by slump, or how much the wet concrete settles after its been formed into a cone shape. To test the slump on your fresh batch, you can use a professional slump cone (available from home improvement stores) or a reasonable DIY facsimile made from a sturdy plastic cup with its bottom cut off. Dampen the inside of the cone, and place it so that its larger end is on a flat, nonporoussurface. Then, fill the conethrough its open top with thoroughly mixed concrete, tamping it down with your hands or (if the hole is too narrow) a rod as you go. When you lift the cone away,the wet concrete should slump to about half its original height if it is all-purpose concrete or one-third of its original height if its a more fluid, wet-set mix. If the slump is less than it should be, churn a little more water into the batch; a larger slump than expected requires additional dry mix. Test again before casting your project, and to ensure uniformity and strength in the finished product, dont move on until the mix has reachedadesirable consistency.

Disclosure: BobVila.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for publishers to earn fees by linking to Amazon.com and affiliated sites.

dry fertilizer equipment sales & parts | doyle manufacturing

Welcome to Doyle Equipment Manufacturing, home of worldwide quality dry fertilizer blending, conveying, tending, and spreading equipment.Located in Palmyra, MO, USA, directly located on Hwy 61, The Avenue of Saints, we are a four generation family owned and operated company.

Welcome to Doyle Equipment Manufacturing, home of worldwide quality dry fertilizer blending, conveying, tending, and spreading equipment.Located in Palmyra, MO, USA, directly located on Hwy 61, The Avenue of Saints, we are a four generation family owned and operated company.

how cement mixers work | howstuffworks

Most construction equipment is easy to understand. Cranes move things up and down. Dump trucks load up, move out and unload. Bulldozers push and graders grade. The one exception to this is the humble cement mixer, beloved by children, hated by in-a-hurry drivers, and misunderstood by most people outside the cab of the 30,000-pound (13,608-kilogram) behemoths.

While concrete has been around in one form or another since before the Romans built the Appian Way, the transit mixer is a child of the 20th century. But recent invention or not, the mixer is here to stay.

The misunderstanding begins with the name. What people refer to as a cement mixer is known in the construction industry as a concrete mixer and comes in a large number of types, sizes and configurations to handle the many tasks set before it each day. That need to fill so many roles means the machine is dynamic, changing shape and form as the needs of the people using concrete change as well.

In this article we'll examine some of the major types of mixers, from the traditional drum-shaped ready-mix transit mixer to the less-common but growing in popularity volumetric mixer, essentially a concrete plant on wheels. How cement mixers work and why they work the way they do is a fascinating combination of old and new technology. You'll never see a cement mixer the same way again.

But before we begin, let's clarify the difference between cement and concrete. In baking terms, the difference between concrete and cement is the difference between flour and a loaf of bread. Concrete is a generic term for a mix of aggregate -- usually stone or gravel, water and cement. Modern cement is a complex blend of finely ground minerals, and goes by the generic name of "portland." Concrete is made by combining the three ingredients in a mixer, whether that mixer is stationary or driving down the road, and the water is absorbed by the cement, which then binds the aggregate together, creating concrete.

Stephen Stepanian developed and applied to patent the first motorized transit mixer in 1916, in an effort to replace the horse-drawn concrete mixer used at the time. Wooden paddles churned the mixture as the cart wheels turned, but the design was of limited use -- it was cumbersome and slow. The same, however, could be said of the engines and trucks during that period. But by the 1940s, engines and truck-frame construction caught up to the need for a rugged vehicle capable of hauling thousands of pounds of wet, or unset, concrete. As the building boom following World War II went into full swing, mixer trucks came into their own.

The large drum mixer seen on roads today hasn't changed much from Stepanian's vision of a better concrete hauler. Mobile transit mixers are a mix-and-match selection of engine, truck frame and rotating mixer. The mixer is similar, though larger in scale, than the smaller ones found on construction sites. A large motor, separate from the engine, rotates the drum on the truck body, and a series of blades or a screw powered by the same motor keeps the aggregate, water and cement in constant motion. This keeps the premixed concrete from setting, though the clock is often ticking to get the load to the construction site, road section or parking lot. Most cement manufacturers suggest keeping the time between mixing and pouring to 90 minutes at most. It's even better to get it to the site in less than an hour.

As technology has changed, so has the basic mixer design. While many transit mixers still have rotating drums, most don't simply pick up a load of wet cement and transport it. The few that still do head mostly to road sites where it's possible to pour the mixture immediately.

Most transit mixers have a separate water tank in the truck. The spinning drum keeps the dry ingredients, aggregate and cement mixing during most of the trip. When the driver is within a few miles of the site, water is added to create concrete fresh for delivery.

This is considered "batch" delivery of ready-mixed concrete, mixing ingredients off site and trucking them where they're needed. Advances in technology have made it possible to mix concrete at the job site, though transit mixers are still the workhorse of the field.

Volumetric and metered mixers are becoming more common. Both types are essentially on-site custom concrete plants. Separate holding tanks of aggregate, cement and water are contained in one truck with a computer hooked to augers and pumps. At the site, the customer can order a specific type of concrete (there are more than a dozen) that can be mixed by the truck.

Some form of concrete -- the mix of a binder, aggregate and water -- has existed since the dynasties of the Egyptian pharaohs when water, sand and lime were mixed to use as mortar in building sections of the pyramids. Romans also used a form of concrete in constructing their aqueducts, the Coliseum and other major constructions. Scientists in the 1800s began experimenting and perfecting hydraulic cement, which is what the construction industry still uses today. The name for portland cement came from the Isle of Portland, off the English coast, where deposits of the mineral components used in modern concrete were first found and chemically isolated. By 1908, Thomas Edison was experimenting with building pre-cast concrete houses in Union, N.J. Most of those houses are still standing and being used. Then there are the famed Hoover and Grand Coulee dams, built in 1936, that stand among the wonders of the world.

While concrete comes in bewildering array of types, one thing is certain -- it's heavy. A large batch of concrete can weigh more than 30,000 pounds (13,608 kilograms), not counting the weight of the truck itself, anywhere from 10,000 to 30,000 pounds (4,536 to 13,608 kilograms). For a truck to haul that weight, it has to be powerful. And to get that load over the rough terrain of a construction site, the truck has to be tough.

The trucks come in three separate parts -- engine, frame and mixer. Most truck companies provide the engine and frame, with amenities ranging from sleeper cab to computer navigation. The mixer, or volumetric plant, is added on at a later time. The mix-and-match approach to building trucks is aimed at giving a company -- spending anywhere from $30,000 to more than $100,000 -- a new truck built to order. Each company has specific wants and needs and requires a truck tailored to those. For example, some may need a truck with a heavier engine and a lighter drum, which could be removed at a later time and turned into a trash hauler with a few modifications.

Most truck engines range from 250 to 300 horsepower, depending on the application. Some companies offer engines with more than 400 horsepower. Horsepower is a measure of power, an engine's "oomph," in other words. The "oomph" is usually supplied by a diesel engine, most commonly manufactured by Cummins or Caterpillar. Diesel engines produce more torque at lower engine RPM than a similar gas engine, making them ideal for low-speed, high-power applications like towing or hauling. Diesels are also preferred for their longevity -- many can go for a million miles (1,609,000 kilometers) or more with routine maintenance -- as well as their ruggedness.

Unlike gas engines, diesel engines operate using compression ignition and require a heavy engine block to withstand the tremendous forces at play inside them. That same compression ignition means the engine function with a higher compression ratio within the cylinders, thereby producing more power. That power is translated to torque, or rotational power, through special gearing in the transmission -- mixers have anywhere from 7 to 18 gears and can be manual or automatic, and differentials.

Most concrete trucks produce anywhere from 1,000 to 3,000 foot-pounds of torque. What this means, in layman's terms, is a concrete truck will never beat a street car at a quarter-mile race, but it will be able to break through the concrete crash barrier at the end without a blip in engine RPM and keep going.

Gas engines develop torque at higher RPM than diesel engines. Anyone who has ever towed a boat or trailer behind a gas-powered vehicle has experienced the need to press the gas pedal to make it up a hill. Diesel engines, because of their design, actually produce better torque at lower revolutions per minute. So slowing on a hill actually provides more torque.

But even a truck with the most power and torque can't control a 60,000-plus-pound load with ease. That's where the truck's axles come in, and these play a larger role than simply keeping the wheels and tires in their correct places.

Most of the newer trucks are equipped with live axles. Live axles are generally non-drive axles and are equipped with air brakes. Those brakes can be used to help steer the truck. There are usually at least three axles behind the cab, though some larger volumetric mixers can have up to six. Some of those axles are lifted and lowered to help distribute the weight of the truck and load.

The defining factor in truck type is a given state's bridge laws. Each state puts bridge crossing weight restrictions on construction vehicles. Contractors who break those laws face fines and penalties, and each state has different legal requirements, including many that require a bridge axle, or an extra axle off the back of the truck used to further distribute weight when making crossings.

The rumbling and grumbling of mixer trucks, with the seeming magic of pouring cement, has led the machine to play a role in several children's shows and become popular toys. Perhaps the most notable mixer truck is Tumbler, a yellow and green truck featured on the "Bob the Builder" series. Patrick, another transit mixer, made a brief appearance in the "Thomas and Friends" videos, based on the Thomas the Tank Engine character, claiming he was the most important piece of equipment at the construction site. The machines learn they all need to work together to get the job done and one isn't more important than the other.

Most of the mixer fleet, especially older batch model trucks, uses a simple tip-and-pour method to get the concrete out of the mixer. A chute attaches to a port and the concrete oozes (or pours, depending on its consistency) out of the mixer to the project. Usually, the driver of the truck operates the machinery and aims the chute. Many transit mixers are coupled to a hydraulic lift bed that can tip up the drum, similar to a dump truck, if needed.

Other trucks, many of them volumetric and the newer transit mixers, use a pump to move the concrete from the truck to the project. The pumps, usually reciprocating piston pumps, can be mounted on the front or the rear of the truck. Having the pump in front allows the driver to maneuver to a section of the work site and direct the concrete from inside the cab. The controls can be mechanical, electro-mechanical, hydraulic or purely electronic. Newer trucks are employing more on-board computers to monitor pumps and other components of the mixers.

Before the concrete is pumped or poured, a number of simpler machines act in concert to keep the concrete from setting, and even mix the concrete at the site. Some of the older portions of the fleet, like early mixers, used paddles to stir the concrete and keep it from "settling out," or separating into its component pieces. This technology has been largely replaced by the use of augers and fins. Inside a traditional batch mixer is a concentric series of fins with a slight corkscrew pattern. The direction of the drum's spin squishes the wet concrete into the back of the mixer. When the mixer arrives at the site, the driver reverses the direction of the machine to push it out of the mixer to the chute. From there, gravity does the rest.

Volumetric mixers use augers to move concrete. These are similar to the blades in the batch mixer but smaller. Inside the mixer, an operator feeds data into the mixer and several augers feed aggregate and cement together. Water is added to the mix and larger augers blend the components.

The Greek mathematician, engineer and inventor Archimedes is credited with inventing a pump that used a long, helical screw rotating inside an enclosed tube to lift water from a source to where it was wanted. The screw pump is essentially an inclined plane, one of the simple machines, curled around a central axis. This idea led to the development of augers to move dry ingredients, and the fins set in a corkscrew shape to direct liquids. These machines are used extensively in the processing and mixing of concrete at plants and in volumetric mixers, as well as in traditional transit mixers.

"Breaking up is hard to do" is more than a song lyric to concrete-truck owners. The simple truth of the matter is, once the last of the concrete trickles out of the drum or dribbles out of the pump, the truck isn't empty. A small amount of concrete always remains inside the truck, especially in drum mixers. You can wash the truck out, run water through the drum while it rotates and even pressure-wash the inside. But some concrete is always left. And it dries. The next trip a little more is left. And it dries. Over time, this becomes a problem, reducing the volume of the mixer and its capacity.

Several companies offer pre-treatments, chemical and acid baths and high-pressure washes for drums and interiors. But eventually, the concrete will build to a point where the only viable alternative is mechanical removal. Many smaller companies handle this on their own, sending in a worker with a jackhammer to chip out the hardened concrete. This job, largely unknown outside of the construction field, got its 15 minutes of fame during an episode of the Discovery Channel's "Dirty Jobs" series, which sent host Mike Rowe to work with Jim's Chipping Service, one of the few companies specializing in cleaning hardened concrete.These highly specialized vehicles are essential to the construction business and it doesn't look like they're going away any time soon. But what will cement mixers look like in the future? Read on to find out.

These highly specialized vehicles are essential to the construction business and it doesn't look like they're going away any time soon. But what will cement mixers look like in the future? Read on to find out.

What the future holds for the concrete mixer is unclear. Like many industries, concrete is going "green." The manufacturers of volumetric concrete mixers say their products are more environmentally friendly because they save fuel by mixing materials at the construction site -- the trucks don't have to run their engines to keep the concrete from setting. In addition, truck operators can create only the amount of concrete needed to finish a job -- not only does this save materials, but this method also prevents dumping of excess concrete [source: Modern Contractor Solutions].

Truck manufacturer Peterbilt is experimenting with compressed air "push" systems. The truck would be started using compressed air, and when it reached a certain speed, the diesel engine would kick in. Since an engine requires a larger amount of fuel to overcome inertia, getting it up to speed with relatively inexpensive compressed air would show fuel savings over time. This developing technology is now aimed at inner-city delivery trucks rather than larger trucks like mixers.

IVECO Trucks of Australia is working to perfect a compressed natural gas (CNG) engine for heavy truck use. The CNG trucks have comparable mileage, but release 40 percent less carbon dioxide than diesel and the natural gas is less expensive than diesel fuel [source: IVECO]. Like many of the new generation engine systems, CNG is paired with state-of-the-art electronics designed to get the most out of every tank of fuel.

meka crushing & screening and concrete batching technologies

MEKA brings you a wide range of feeders, crushers, screens and washing systems that can be designed as a full complete stationary or mobile solution/complex according to the location, type of rock and individual preferences of the customer.

Concrete Batching Plants provide high quality concrete with high precision. Mobile, Compact and Stationary MEKA Concrete Plants are a perfect match for Ready-Mix Concrete, Precast Applications, Road Concrete, RCC (Roller Compacted Concrete) and Fiber Reinforced Concrete.

MEKA has installed 1 unit 400 ton/h Mechanical Stabilisation Plant and 1 unit MB-K140 Concrete Batching Plant for one of the biggest contractors of Iraq for the final section of Erbils 120 Meter Road.

home - rapid international :: mobile concrete batching plant | mobile continuous concrete mixing plant | concrete mixers

Since 1969, Rapid has supplied innovative mixing technology solutions to some of the worlds leading concrete, construction and environmental companies, including CEMEX, Lafarge Holcim, Tata Steel, Ferrovial, Arcelor Mittal and many more. Rapids innovative product portfolio includes:

Mobile Concrete Batching Plant (both super and compact sized) Mobile Continuous Concrete Mixing Plant / Pugmills (both wheel and track mounted) Pan, Planetary and Twin Shaft Concrete Mixers High Pressure Concrete Mixer Washout Systems Static/ Bespoke Concrete Batching Plant Concrete Reclaimers

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Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.

chemgrout

For more than 57 years ChemGrout has manufactured the worlds largest selection of grouting equipment. Based in LaGrange Park, lllinois, ChemGrout offers both colloidal and paddle type grout mixers, as well as a variety of grout pumps, including piston, plunger and progressing cavity. The concepts of mixer-pump balance, user-friendly operation and ease of maintenance are emphasized in the design of our grouting systems. Enough technology is incorporated to maximize efficiency, yet not so much as to compromise ease of operation or maintenance.

curing concrete dos and don'ts - bob vila

You may rightly consider concrete to be one of the most durable and attractive construction materials around, but did you know that everything you do after pouring has just as much impact on its strength as the mixing process? In fact, the chemical reaction between cement and water that binds sand and gravel together to make concrete takes nearly 28 days to fully complete. During this process, which is known as hydration, you want to keep moisture in the concrete. Otherwise, water evaporating too quickly from the surfacewhich can happen easily outdoors and in direct sunwill weaken the finished product with stresses and cracking.

Controlling the moisture content and the temperature of the new concrete for the first several days through curing take top priority. By giving concrete mix extra attention during this period rather than walking away as soon as its poured, you can increase the structural integrity of the concrete and make it more resistant to future cracking. For the best results, check out our list of best (and worst) concrete-curing practices before you tackle your next project.

One of the most common methods for curing concrete is to hose it down frequently with waterfive to 10 times per day, or as often as you canfor the first seven days. Known as moist curing, this allows the moisture in the concrete to evaporate slowly. Moist-cured concrete can be up to 50 percent stronger than concrete that was cured without being dampened! Spraying is not recommended for concrete poured during cold weather, however; for pours in chilly weather, see Dont Let Concrete Get Too Cold, below.

When you dont have time to revisit your concrete with a hose as many times as necessary for true moist curing, another option is to use a cover that can trap and slow the evaporation of the moisture in the mix. Either polyethylene sheeting thats at least 4mm thick or a concrete curing insulating blanketboth available from DIY storesare good for this task. Wet the concrete thoroughly, and then cover it with the sheeting of your choice, using bricks, rocks, or other heavy items to hold it in place. Remove the sheeting or blanket daily, wet the concrete again, re-cover it, and repeat for seven days. This technique can also be used for upright concrete columns and walls by wetting them down and wrapping them with a curing blanket or plastic sheeting.

Pond curing is another great way to cure concrete, and the process is just as it sounds: You form temporary berms around a new concrete slab, and then flood the area inside them with one foot of water. Three days of pond curing does the work of sevendays of moist curing, and without daily attentionjust be sure the water level remains above the concrete slab.If it drops, youll need to refill a little. This technique isnt for everyone,though, because it takes quite a bit of soil to form berms around a big concrete slab. Large-scale builders may use this method to speed up the construction process when pouring foundation slabs, for example, in order to get on to framing the structure.

If other methods are not feasible, theres a simpler solution yet: curing compounds. Available from DIY stores and ready-mix concrete companies, these contain soluble emulsions that form a protective film when sprayed directly onto the surface of newly poured concrete slabs or walls. Ultimately, the film provides a barrier or film to prevent water from evaporating, allowing it to cure at a consistent rate. Some curing compounds are designed to disintegrate completely after a couple of weeks, while others should be removed by scrubbing after the curing process is complete. Still others, such asQuikrete Acrylic Concrete Cure &Seal,penetrate the surface of the concrete, becoming a permanent sealer that waterproofs the concrete to keep it looking freshly poured. Read the manufacturers labels carefully before choosing a curing compound to ensure that it meets your specific needs.

The goal of all concrete installation is to produce a high-quality product that resists cracking. While curing concrete will go a long way toward strengthening the finished project, many concrete slabs will crack anywaydespite all precautionsdue to concrete shrinkage as water is used up in the hydration process as well as temperature fluctuations. To preserve the beauty of the slab in the face of these challenges, do-it-yourselfers can place control joints at predetermined locations to guide the inevitable cracks. These joints should be cut in a quarter of the depth of the concrete slab during the very beginning of the curing process, within 24 hours of the initial pour. Usinga metal jointing tool, the control joints can be easily and smoothly cutinto the concrete surface as the appropriate distances in the slab.

Determine the maximum spacing between joints (in feet) by multiplying the planned concrete thickness (in inches) by 2.5. For example, if youre creating a sidewalk that is 4 inches deep, youd multiply 4 by 2.5 to get a distance of 10 feet between joints. Feel free to place them closer together for added crack protection. On a larger square slab, like a patio, youll want to consider breaking the concrete with joints that are perpendicular, toodown as well as across. Then, if your slab patio, driveway, or sidewalk cracks, it will most likely do so along a precut joint and can, therefore, go virtually unnoticed.

The best time to pour concrete is when temperatures are expected to remain above 50 degrees for five to seven days, but plans can go awry with the arrival of an unexpected cold front. When that happens, the importance shifts from keeping the concrete damp to keeping it warm enough that the chemical hardening process is not interrupted. Concretes chemical reaction slows at 50 degrees Fahrenheit and completely stops at 45 degrees Fahrenheit, meaning that itll go dormant and it wont gain strength. If you expect to pour concrete and use it in a couple days, you cant. When the temperatures drop, new concrete should be covered with concrete insulating blankets (or, in a pinch, old household blankets!). Protect new concrete from the cold for the first two to three daysup to a week, if its very coldafter which it should be strong enough to handle it without risk of damage.

Any paint or stain applied to young concrete while its still hardening can be negatively affected by residual moisture or the changing chemical content in the concrete. It takes about a month for all of the water to get used up in the hydration process. Brush on paint too soon while moisture is still rising to the surface, and it can put pressure underneath the hard barrier of paint, causing it to peel away or break the bond. For this reason, paint may not adhere as well, and the final color and appearance of stained concrete may also be affected. To achieve the best results, wait until the 28-day period is over to apply paint or stain, and then follow the top tips outlined in this video from the concrete pros at Quikrete.

Although concrete will harden soon after pouring, its still susceptible to damage from weight during the first four weeks. Wait at least 24 hours before allowing foot traffic, including pets, on a newly poured sidewalk or slab, and dont drive a vehicle on a new driveway for at least 10 days. After that, you can drive regular passenger cars on the concrete; heavy pickups or RVs can roll onto the driveway once the concrete reaches its full strength, at around 28 days.

Disclosure: BobVila.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for publishers to earn fees by linking to Amazon.com and affiliated sites.

cementing services | schlumberger

Cement supports and protects well casings and helps achieve zonal isolation. Critical to safer, environmentally sound, and profitable wells, zonal isolation is created and maintained in the wellbore by the cementing process. Whatever your drilling environment or however remote the location, our innovative cementing technologies offer you a range of cementing solutions to achieve zonal isolation for the life of your well.

This paper describes the successful design and execution of an engineered flexible-expanding cement system to overcome various challenges including long salt formations, potential high-pressure zones and lost circulation zones.

setting posts without mixing | quikrete: cement and concrete products

Step 1 Dig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4 wood post should be about 12 inches wide). The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet).

aimix group official website - click to view more products!

Stationary concrete batching plantsMobile batching plantsPortable concrete mixer plants Stationary Type Type: AJ-25AJ-240 Production capacity: 25m3/h120m3/h Concrete mixer: JS series; SICOMA series Mobile TypeType: AJS-25AJL-25AJW-1000 Concrete Mixers Type: JS series twin shaft mixer, planetary concrete mixer, concrete pan mixer, etc

Up to now, we have sent our machines to many countries, such as Algeria, Argentina, Australia, Bangladesh,Belarus, Bhutan, Bolivia,Botswana, Brazil, Cambodia, Colombia, Congo, Czech, Denmark, Djibouti, Dominica republic, East Timor, Ecuador, Egypt, Ethiopia, Fiji, France, Greece, Iran, Kazakhstan, Kenya, Laos, Lebanon, Libya, Malawi, Maldives, Mauritius, Mongolia, Mozambique, Myanmar, New Zealand, Nigeria, Oman, Paraguay, Qatar, Senegal, Seychelles, Sri Lanka, Syria, Thailand, Trinidad and Tobago, Uganda, Ukraine, United Arab Emirates, USA, Vietnam, Yemen etc.

AIMIX GROUP is our brother, their engineer did well in installation and training the staff, our engineer has began to operate the plant. We hope that our project will be completed soon with the efficient operation of the mixing plant.

AIMIX is in Manila, we visited them for a small concrete plant, they recommended AJ-35, which is a small hopper type. Under the effect of automatic control system, we can produce concrete much more efficiently. Thanks AIMIX!

AIMIX engineer is very professional! He can reasonably planned the installation of the brick machine according to our site conditions and patiently trained our operators. We have established a long-term business relationship with AIMIX.

Thanks AIMIX helped us choose ALQ80 stationary asphalt plant and install it, believe it can produce quality asphalt mixture. The burner of the Italian Ebico brand AIMIX use has stable performance and can save about 20% to 30% of fuel, which greatly saves production costs