Frequently Asked Questions (FAQ) | QUIKRETE: Cement and Concrete Products (2024)

We’re here 24/7 to answer your questions. Have a question that’s not listed below? Just give us a ring at 1-800-282-5828. We’ll be glad to help you out.

Can I order QUIKRETE products in bulk?

Yes! Click on the “Locations Detail” to call the plant nearest to you.

Where can I find MSDS documents, Spec Data and other technical data for QUIKRETE products?

You can click here to find everything in the “Technical Data” section.

Where can I get technical advice on the use of QUIKRETE products?

You can get technical advice by clicking on the “Contact Quikrete” or calling us at 1-800-282-5828.>

How can I order product literature?

You can order product literature by clicking on the “Contact Quikrete” or calling us at 1-800-282-5828.

What do I use to build concrete countertops?

Click on the “Quikrete at Home” to search for project instructions on building concrete countertops.

How do I use Sand Mix to top a sidewalk or driveway?

Always clean the surface first and make major repairs with a concrete product. For toppings less than 1" thick, add QUIKRETE® Concrete Acrylic Fortifier to the mix. For toppings between 1 and 2", paint Concrete Bonding Adhesive on the surface. Moist cure topping for 5 to 7 days or coat with Cure & Seal at the appropriate time. No special curing or sealing is needed when Acrylic Fortifier is in the mix.

Can I use Blacktop Patch to resurface my asphalt driveway or to build speed bumps, etc.?

No. QUIKRETE® Blacktop Patch must be in a confined area to compact properly. It is to be used in pot holes or cracks greater than 1" wide. When installing in pot holes apply in 1" lifts.

Can Hydraulic Water-Stop be coated on the surface of a wall to seal hairline cracks?

No. QUIKRETE® Hydraulic Water-Stop is to be mixed to a putty like consistency and inserted into cracks greater than 1/4" wide. Use a product like QUIKWALL® Surface Bonding Cement or QUIKRETE® Heavy Duty Masonry Coating to cover and seal hairline cracks.

How do you set a post with QUIKRETE® Fast-Setting Concrete Mix?

Dig a hole that is about 3 times the diameter of the post with a depth of 1/3 the overall post length. Place 6" of gravel or crushed stone at the base to aid in drainage. Position the post and check that it is straight. Pour the QUIKRETE® Fast-Setting Concrete Mix dry from the bag into the hole until it reaches 3 to 4" from the top. Pour water onto the dry mix and allow it to soak in. Add water until the powder is thoroughly wet. This will take about one gallon of water for each 50 pound bag depending on soil conditions. If the hole is deeper than 2 1/2', do the operation in lifts of no more than 2 1/2' each. Fill the remainder of the hole with soil or the sod dug from the hole.

How thick should a slab of concrete be for a patio, sidewalk or driveway?

The normal thickness is the height of a standard 2" x 4" (about 3 1/2"). Thinner sections will crack too easily. When using smaller sections like with the QUIKRETE® Walk Maker, a thickness of 2" is adequate.

What are the uses and advantages of QUIKRETE® Quick-Setting Cement?

QUIKRETE® Quick-Setting Cement is ideal for making repairs to vertical and overhead surfaces. Quick-Setting Cement sets in about 10 minutes so do not mix more than can be used in 10 minutes. Mix Quick-Setting Cement to the consistency of modeling clay. Start with about 1 part water to 5 parts of Quick-Setting Cement. Mix thoroughly. Adjust consistency by adding a small amount of powder or water as needed. Dampen the surface to be repaired. Use heavy trowel pressure to apply a thin layer of Quick-Setting Cement to the surface. Then build up the area to the desired thickness and shape the patch to conform to the existing concrete. For thin repairs less than 1" thick, add QUIKRETE® Acrylic Fortifier to the mix for improved bond and better curing.

I want to put a railing into a sidewalk. How do I do it?

Use a masonry core drill or chisel to create a hole in the concrete. The size of the hole should be at least 1" larger than the size of the railing. The hole should be at least 3" to 4" deep. (In many cases you will drill through the entire slab.) Remove all loose concrete and debris from the hole. Dampen the hole prior to pouring QUIKRETE® Anchoring Cement but do not leave standing water in the bottom of the hole.

What are the uses of QUIKRETE® Sand (Topping) Mix?

QUIKRETE® Sand (Topping) Mix, as the name implies, is ideal for topping the surface of existing concrete. Rigorously clean the concrete surface to remove algae, dirt, oil spills and weak or otherwise contaminated surfaces. A high pressure water blasting machine is ideal for preparing the surface. The next step depends on how much you want to build up the surface. If you wish to build up the surface by 1" to 2", apply a coating of QUIKRETE® Concrete Bonding Adhesive, let it dry and then place the Sand Mix (following the directions on the package). If the planned build up is to be about 3/8" to 1", add QUIKRETE® Concrete Acrylic Fortifier to the Sand Mix following the directions on the Acrylic Fortifier bottle (do not use QUIKRETE® Bonding Adhesive in this case). Sand (Topping) Mix can be troweled and finished just like concrete.

I want to use Mortar Mix or Mason Mix to repair my fireplace. Will those products stand the heat in the fireplace?

QUIKRETE® Mortar Mix and Mason Mix can stand temperatures up to about 300 degrees F. You can use these products to repair the parts of the fireplace that are made with ordinary brick. Do not use Mason Mix or Mortar Mix in the areas of the fireplace that are made with fire brick.

How do I repair and resurface my concrete driveway, patio or sidewalk?

For sections thinner than 3/8", you will want to use a new and unique product called QUIKRETE® Concrete Resurfacer. This product can be placed very thin down to less than 1/8" thick and can be applied using a squeegee and broom. No curing is necessary. Full depth repairs should be made with one of the fine QUIKRETE® Concrete Mixes. For repairs from about 3/8" to 2" QUIKRETE® Sand Mix is the most common choice. It is trowel applied. Addition of QUIKRETE® Acrylic Fortifier is required for thickness less than 1". QUIKRETE® Concrete Bonding Adhesive can be painted on the surface for repairs in the 1" to 2" thickness range. Do not use Concrete Bonding Adhesive and Acrylic Fortifier at the same time.

What do I use to build a patio, driveway or sidewalk out of concrete?

Several concrete products are available from QUIKRETE® for making driveways and walkways and other concrete slabs. They are all trowel applied at 2" thickness: QUIKRETE® Concrete Mix is the standard product which achieves a strength of about 4000 psi in 28 days. Crack-Resistant Concrete has similar compressive strength to QUIKRETE® Concrete Mix but it gives extra impact resistance and is ideal for use with the Walk Maker. QUIKRETE® 5000 is used when you want higher strength or if you need the project to be ready more quickly. It achieves a compressive strength of 5000 psi in 28 days. Several Fast-Setting products are also available.

How do I build or repair stucco walls?

QUIKRETE® has three stucco products for use with metal lathe. QUIKRETE® Base Coat Stucco is used as the first two layers in traditional 3 coat stucco systems. It is applied at a nominal thickness of 3/8" per layer. The third layer is made with QUIKRETE® Finish Coat Stucco. It is available in white or gray and is applied at a minimum thickness of 1/8". QUIKWALL® Surface-Bonding Cement can be used in a single coat of 3/8" in special code approved wall systems. Finish Coat Stucco can also be used over One Coat Fiberglass Reinforced Stucco. QUIKRETE® Elastomeric Coating is a synthetic product that can be used to coat concrete and stucco. It bridges and seals cracks because of its high elasticity.

How do I repair a crack that is leaking in my basem*nt?

Use QUIKRETE® Hydraulic Water-Stop Cement to stop active leaks in cracks that are over 1/4" wide. Make a golf ball sized quantity of product and force it in the crack with a gloved hand. Hold in place until it hardens (less than 5 minutes).

How do I fill cracks in my concrete or masonry walls (not active leaks)?

Two fast setting products are available for filling cracks in vertical concrete walls. They are QUIKRETE® Quick Setting Cement and QUIKRETE® FastSet™ Repair Mortar. Both are trowel applied into cracks that are larger than 1/8". Clean and dampen the surface first. Apply a thin layer with heavy trowel pressure and then build up to the desired thickness. It is generally desirable to add QUIKRETE® Concrete Acrylic Fortifier to Quick-Setting Cement to enhance the bond. When using FastSet™ Repair Mortar, no bonding agent is needed. Other options: QUIKRETE® also makes synthetic products for vertical cracks. QUIKRETE® Concrete Repair is used for concrete and stucco, while QUIKRETE® Mortar Repair is specifically designed for fixing mortar joints.

How do I anchor bolts or rails in concrete?

QUIKRETE® Anchoring Cement is a fast setting product that is used in holes at least 1" larger than what is being anchored. It is poured in place. For light duty, the project can be put into service within a couple of hours.

How do I repair cracks in asphalt driveways?

QUIKRETE® Blacktop Patch and Commercial Grade Blacktop Patch are used for filling cracks greater than 1" wide. QUIKRETE® makes synthetic acrylic crack repair materials for cracks up to 1/2" wide. One is a pourable filler called QUIKRETE® Latex Blacktop Crack Seal and the other is a caulking gun applied product called QUIKRETE® Blacktop Repair. These products are used to repair cracks that are from about 1/4" to about 1/2" wide. Pour sand in the crack first leaving about 1/4" of space at the top for the crack sealer. Driveways with fine hairline cracks can be sealed with Traffic Top® Driveway Sealer or Traffic Top® Driveway Filler & Sealer.

The building inspector says I need to damp proof my new basem*nt. What can I use?

QUIKWALL® Surface-Bonding Cement is a trowel applied product which is code approved for dampproofing basem*nts when applied at a minimum thickness of 1/8". Apply to dampened surfaces. Use QUIKRETE® Concrete Acrylic Fortifier in the mix when coating concrete. QUIKRETE® Heavy-Duty Masonry Coating is a brush applied product that can be used to damp proof a basem*nt. Use two coats of Heavy Duty Masonry Coating with Concrete Acrylic Fortifier to meet most building code requirements.

How do I level an interior floor and give it a smooth surface for tile or carpet?

Use one of the QUIKRETE® Self-Leveling Floor Resurfacers. QUIKRETE® Self-Leveling Floor Resurfacer can be covered with carpet or tile in as little as 24 hours after application. It is applied at a thickness of feather edge to 1". For thicker applications, pour in layers.

What do I use to build or repair a concrete slab when it must be used in a short time?

Depending on the performance level required there are several options. QUIKRETE® Fast-Setting Concrete provides about 400 psi in 2 hours and is often used for setting air conditioner bases and other small projects around the house. QUIKRETE® FastSet™ Concrete Mix is suitable for heavy industrial and highway use. It achieves a strength of 3000 psi within 3 hours and 5000 psi in one day. There are two other options suitable for industrial and highway use: Rapid Road Repair (extended by 50 % with -1/2" gravel) and FastSet™ Non-Shrink Grout (extended by 50% with -1/2" gravel).

How do I repair vertical concrete surfaces such as walls, columns steps, and overhead beams?

QUIKRETE® has two trowel applied products especially designed for vertical and overhead surfaces: QUIKRETE® FastSet™ Repair Mortar and QUIKRETE® Quick-Setting Cement. These products are mixed to a modeling clay consistency which makes them ideal for vertical surfaces. Quick-Setting Cement sets quickly but gains strength slowly. This property makes it ideal for artists who wish to carve it and shape it while it hardens. Use with QUIKRETE® Concrete Acrylic Fortifier for improved bond strength. The new FastSet™ Repair Mortar offers superior early strength and never requires the addition of a bonding agent to provide good bond. This makes it ideal for making rapid repairs to structural beams and columns.

How do I cure my concrete?

Generally, concrete and other Portland cement based products should be moist cured for at least 5 to 7 days. Refer to product instructions for specific instructions. QUIKRETE® Acrylic Concrete Cure & Seal is an ideal alternate to moist curing. Applied at the appropriate time, it will help the concrete cure properly while sealing it against stains that tend to penetrate the surface of the concrete. Acrylic Concrete Cure & Seal should never be used at temperatures below 50 degrees F or when rain is expected within a few hours.

How do I bond old concrete to new concrete?

QUIKRETE® Concrete Bonding Adhesive can be used for interior applications and exterior applications over 1" thick. Do not use Concrete Bonding Adhesive in continuously wet environments. Concrete Bonding Adhesive is painted on the surface of the old concrete and allowed to dry before new concrete or QUIKRETE® Sand Mix is applied. For exterior applications less than 1" thick use Sand Mix with QUIKRETE® Concrete Acrylic Fortifier and do not use QUIKRETE® Concrete Bonding Adhesive. Sand Mix with Acrylic Fortifier is a very good way of topping concrete in a thickness range of about 3/8" to 1". For sections thinner than 3/8" you will want to use a new and unique product called QUIKRETE® Concrete Resurfacer. This product can be placed very thin down to less than 1/8"" thick and can be applied using a squeegee and broom. No curing is necessary.

How do I repair my mortar joints?

Mortar joints are normally repaired with a weaker mortar than the original. QUIKRETE® Mortar Mix is the best choice for repairing mortar joints in masonry walls. Horizontal mortar like exterior steps should be repaired with a stronger mortar. QUIKRETE® Mason Mix is the minimum recommendation. Vinyl Concrete Patcher is a good choice, but extra care must be taken to insure that the Vinyl Concrete Patcher is removed quickly from the surface. Use QUIKRETE® Mortar Repair in a special caulking tube for a quick and easy way to make non-structural repairs to mortar joints.

How do I repair cracks and spalls that require a feather edge (small areas only)?

QUIKRETE® Vinyl Concrete Patcher is specially designed for this purpose. It can be used to fix spalled and damaged areas up to one square foot. It is also useful for filling cracks larger than 1/8" wide and for repairing mortar joints. Other options for repairing cracks: QUIKRETE® Gray Concrete Crack Seal and QUIKRETE® Concrete Repair can be used to fill cracks that are from 1/8" to 1/2" wide. Gray Concrete Crack Seal should not be poured over 1/4" thick. For deeper cracks, fill the crack with sand to within 1/4" of the surface. Concrete Repair can be applied up to about 3/8" thick.

What is the easiest way to set posts using QUIKRETE® products?

The simplest way to set a post is to pour the dry material into the hole and then add water. The preferred product is QUIKRETE® Fast Setting Concrete. It is ready to use in 4 hours. QUIKRETE® Concrete Mix can also be used for setting posts, but you must wait a few days before applying heavy loads.

After setting a post or pouring a slab with Fast-Setting Concrete, how long must I wait before I can use it?

At 70 degrees F, the concrete will set in 20-40 minutes, but you should wait about 4 hours before applying heavy loads. In cool weather allow extra time.

What is the difference between regular QUIKRETE® Concrete Mix and QUIKRETE® Crack-Resistant Concrete?

The hundreds of thousands of tiny fibers in QUIKRETE® Crack-Resistant Concrete produce the following benefits: reduced drying shrinkage cracking, improved impact resistance, improved crack resistance.

The directions for Hydraulic Water-Stop say to enlarge the hole or crack that is leaking. How?

Use a hammer and chisel to enlarge the hole. Do not make an open V-shaped hole. Ideally you should undercut the hole, making the exposed part of the hole smaller than the end within the wall. If it is not possible to do that, then at least keep the sides as square as possible.

Does QUIKRETE® have products for grouting of machinery base plates, columns, keyways, etc.?

Yes. QUIKRETE® has three non-shrink grouts for commercial and industrial use. They are QUIKRETE® Non-Shrink General Purpose Grout, QUIKRETE® Non-Shrink Precision Grout and FastSet™ Non-Shrink Grout. All of the products can be used for anchoring and grouting but each one has particular advantages. Non-Shrink Precision Grout is particularly suited for grouting machinery bases because of its extended working time. General Purpose or Precision Grout can be used for columns, bridge key ways, etc. FastSet™ Non-Shrink Grout is used when it is important to get the project in service quickly.

I am having trouble mixing and placing the Hydraulic Water-Stop. It is crumbly on the wall. What did I do wrong?

The most common cause of crumbly QUIKRETE® Hydraulic Water-Stop is improper mixing or mixing too much at a time. The critical thing is to mix only golf-ball sized quantities at a time. Mix very quickly because the product hardens in 3-5 minutes. Other pointers: If you are fixing a crack that is not leaking, use QUIKRETE® Quick-Setting Cement; it is much easier to work with. QUIKRETE® Hydraulic Water-Stop is not to be used as a resurfacer.

I want to paint a project built or repaired with QUIKRETE® products.

In general we recommend that you wait about 7 days for latex paints and 28 days for oil based paints.

How do I repair potholes in my blacktop driveway?

QUIKRETE® Blacktop Patch and Commercial Grade Blacktop Patch are designed for this application. The commercial grade product has the advantage of being easier to place and it can be placed in a damp environment. Both products should be applied at a minimum depth of 1" and should be placed only in potholes. Do not attempt to use these products to resurface old asphalt. They must be confined in a hole and well compacted to work properly. Allow at least one month before sealing Blacktop Patch with QUIKRETE® Traffic Top® Driveway Sealer.

Frequently Asked Questions (FAQ) | QUIKRETE: Cement and Concrete Products (2024)

FAQs

What is the main difference between concrete and cement? ›

In short, the difference between cement vs concrete is easy to clear once we know all the basics of their compositions. Cement is a binding agent made from limestone and clay; whereas concrete is a building material created through the proper mixing of cement, water, sand, and rock.

What's the difference between concrete and quikrete? ›

Since Quikrete needs less time to become fully set up, it has stronger strength than traditional concrete. Quikrete has been engineered to be a stronger product with a higher compressive strength (ability to bear loads) and greater tensile strength (resistance to being pulled apart).

What happens if cement is too wet? ›

Too much water added to the mix means that excess water is retained inside the concrete after the curing process has finished. This will often result in the formation of small cracks as the water eventually evaporates over time, which reduces the compressive strength of the concrete.

How many bags of quikrete do I need for a 10x10? ›

The amount of concrete you need for a 10x10 slab depends on how thick it will be. So, for a 4-inch slab you'll need 1.24 cubic yards (56 80lb bags), but a 6-inch slab requires 1.85 yards (84 80lb bags).

What lasts longer concrete or cement? ›

What lasts longer: concrete or cement? Concrete lasts much longer than cement, as it can withstand heavy loads and harsh weather conditions. Concrete can last for over 100 years under most conditions.

What's stronger cement or concrete? ›

Concrete is used for large projects, while cement is used for smaller jobs, including minor repairs. The adhesive properties of cement make it an excellent binding agent, but the aggregates added in the concrete blending process make concrete substantially stronger than cement. Cement, on its own, is prone to cracking.

What is 3000 psi concrete used for? ›

3,000 PSI. The residential workhorse of concrete, 3,000 PSI can be used for driveways, patios and sidewalks. Its durability will help shrug off the freeze-thaw cycle of harsh winters. This is a fine choice for any general construction use.

What makes concrete higher PSI? ›

The more cement added to the mix, the higher the PSI rating of the concrete once it has cured. For example, a traditional 3000 PSI concrete mix contains 5 sacks of cement. To achieve 4000 PSI it takes 6 sacks of cement. The added cement is also why higher PSI mixes are more expensive.

What is 5000 psi concrete used for? ›

Pavement and floor slabs in homes and business are made of concrete at 4,000 PSI and able to withstand traffic and support heavy loads. Concrete that exceeds 5,000 PSI is used in special construction projects that require building materials that are able to withstand heavy impact and extreme wear and tear.

Is it OK if it rains after pouring cement? ›

Once the concrete has been finished (between 4-8 hours after pouring) and has set hard enough for walking on, the effects of rain should be minimal. The curing process is a chemical reaction, with ready mix concrete taking up to 28 days to fully cure.

What does 5 inch slump mean? ›

A 5-inch slump indicates that the concrete has a medium consistency or workability. Concrete with a 5-inch slump is neither too stiff nor too wet, and it should be relatively easy to work with and place in the formwork.

How long does it take a 4 inch concrete slab to dry? ›

Concrete is usually dry enough after 24 to 48 hours to walk on. For concrete to dry and reach its full strength, it typically takes about 28 days per inch of slab thickness. Once conditions are conducive for the concrete to cure at 85-90% relative humidity.

How many 80lb bags of concrete do I need for a 10x10 slab? ›

017 cubic yards of concrete, an 80 pound bag will yield . 022 cubic yards. So to break this down you would need 78 60lb bags of concrete mix 61 80lb bags of concrete mix which accounts for the extra 10% that we discussed earlier.

How much does a 30x40 concrete slab cost? ›

The average cost is $4 to $8 per square foot. The median price is about $6 per square foot. Based on these averages, you may pay $4,800 to $9,600 with a median estimate of $7,200.

How many yards of concrete do I need for a 30x30x4 slab? ›

To calculate the amount of concrete needed for a 30x30 slab, you will first need to determine the thickness of the slab. For a standard 4-inch thick slab, you will need approximately 135 yards of concrete.

Is it cheaper to buy cement or concrete? ›

When you need concrete, you will need cement, and other aggregates. So, theoretically, concrete is more expensive than cement- because you need things other than cement to make it!

Are sidewalks concrete or cement? ›

Construction. Contemporary sidewalks are most often made of concrete in North America, while tarmac, asphalt, brick, stone, slab and (increasingly) rubber are more common in Europe.

Why do people say cement instead of concrete? ›

The word cement is far older than the word concrete, and as far back as the 14th century it had a meaning that today would make many people say “you mean concrete, not cement.” For hundreds and hundreds of years, people used cement to refer to walls, floors, foundations, and the like, without anyone getting hot under ...

Which is cheaper concrete or cement? ›

Yes, cement is cheaper than concrete. However, cement is never used on its own. This means that you will have to buy additional materials to be able to use the cement, and the price will go up if you want to be able to use it. Therefore, concrete is a very affordable building material since you can use it on its own.

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