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Customer questions and answers for
Quikrete 80 lb. Concrete Mix

Quikrete 80 lb. Concrete Mix can be used for building or repairing foundation walls, sidewalks, curbs, steps and ramps and for setting posts. This mix designed for pouring concrete 2 in. thick or more. Quikrete 80 lb. Concrete Mix consists of a uniformly blended, properly proportioned mixture of gravel, sand and Portland cement.
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Customer questions and answers for Quikrete 80 lb. Concrete Mix

Question

HOW MUCH WATER DO YOU ADD TO 1 80LB BAG FOR SLAB

Asked by
SAM12
about 80 lb. Concrete Mix on
July 29, 2015
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answer 1
Asked by
QUIKRETEProductExpert
July 31, 2015
An 80 lb bag of QUIKRETE® Concrete Mix will typically require 6 – 9 pints of clean water to achieve the recommended 2 to 3 inch slump. Starting with 6 pints, and adding additional water only as needed to achieve a workable material within the specified slump range, is suggested. Note that the more water that is added to the mix, the weaker it becomes. Visit http://www.quikrete.com/AtHome/Video-Mixing-Concrete-Machine.asp or http://www.quikrete.com/AtHome/Video-Mixing-Concrete-Hand.asp for instructions on mixing concrete by machine and by hand. Please call the QUIKRETE® Technical Center at 1-800-282-5828 if you would like to discuss further.
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Will this bind to asphalt to fix a driveway?

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jmullally
about 80 lb. Concrete Mix on
July 28, 2015
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answer 1
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QUIKRETEProductExpert
July 29, 2015
No, QUIKRETE® Concrete Mix will not bond to asphalt. For repairing potholes, or cracks over 1 inch wide in asphalt, you may use QUIKRETE® Commercial Grade Blacktop Repair No. 170152.
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Question

how many 80 lbs bags of concrete to fill a 16 square foot area 6 inches deep?

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richard
oklahoma
about 80 lb. Concrete Mix on
July 26, 2015
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answer 1
Asked by
QUIKRETEProductExpert
July 28, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. An application that is 16 square feet and ½ foot deep, will require 8 cubic feet of concrete, or 13 1/3 80 lb bags. Yields will vary based upon waste, uneven subgrade, etc.
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Question

how many 60# bags to fill 27inches by 32inches by 4inches

Asked by
smooth
portland,oregon
about 80 lb. Concrete Mix on
July 27, 2015
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answer 1
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QUIKRETEProductExpert
July 28, 2015
A 60 lb bag of QUIKRETE® Concrete Mix yields 0.45 cubic feet of concrete, while an 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. A 27 inch x 32 inch x 4 inch pour will require 2 cubic feet of concrete, which equates to 4 1/2 60 lb bags or 3 1/3 80 lb bags. Yields will vary based upon waste, uneven subgrade, etc.
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Question

9 80Lbs bags for basketball hoop

Asked by
Greg
Bolingbrook IL
about 80 lb. Concrete Mix on
July 24, 2015
I used 9 80lbs bags. Can i install after 24 hours?
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answer 1
Asked by
QUIKRETEProductExpert
July 27, 2015
QUIKRETE® Concrete Mix is a normal setting concrete mix. If your question is whether you can install the hoop on the top of the basketball post after 24 hours, it is recommended to wait 7 days, when the concrete will have a typical strength of 2500 PSI. If your question is something other than this, please contact the QUIKRETE® Technical Center directly at 1-800-282-5828.
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Question

Can we use it on top of existing concrete floor?

Asked by
Pramod
about 80 lb. Concrete Mix on
July 23, 2015
I have a concrete floor outside of my house, I am trying to increase the hight of concrete floor. Can i just mix this with water and pour on top of that floor?
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answer 1
Asked by
QUIKRETEProductExpert
July 24, 2015
Yes, for an overlay no less than 2 inches thick, you may use QUIKRETE® Concrete Mix. Use over a painted on coating of QUIKRETE® Concrete Bonding Adhesive No. 9902 for increased bond. QUIKRETE® Sand Topping Mix No. 1103 may be used as a overlay from 1/2 inch to 2 inches thick. For applications less than 1 inch thick, the Sand Topping Mix should be blended with QUIKRETE® Concrete Acrylic Fortifier No. 8610 replacing half of the water content. For applications 1 inch to 2 inches thick, the Sand Topping Mix should be placed over a painted on coating of QUIKRETE® Concrete Bonding Adhesive (No. 9902). Prior to applying any new material, be sure that the existing concrete is structurally sound and free of any oil, grease, dirt, or coatings that would prevent a good bond. You will need to build a form to enclose the concrete or sand mix. If you have any further questions, please contact the QUIKRETE® Technical Center directly at 1-800-282-5828.
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Question

i need to do a patio slab of 4 inches and is 170sq feet all around how many bags do I need to get

Asked by
maria
new jersey
about 80 lb. Concrete Mix on
July 16, 2015
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answer 1
Asked by
QUIKRETEProductExpert
July 16, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete when placed. A patio that is 170 square feet and 0.33 feet (4 inch) thick will require 56-57 cubic feet of concrete, or 95 80 lb bags. Yields will vary based upon waste, uneven subgrade, etc. It is crucial that you have sufficient equipment and man power to allow you to pour the entire slab, or sections that are separated by expansion joints, before any of the material in that section has set. If some of the material sets before subsequent bags are poured, a cold joint will form. A cold joint is caused by the inability of the product to intermix between bags, and prevents the slab from being a single, solid mass. A cold joint may cause problems ranging from a simple aesthetic issue, to as serious as potentially allowing for water intrusion into the cold joint, which may eventually lead to concrete degradation. Please contact the QUIKRETE® Technical Center directly at 1-800-282-5828 if you have any further questions.
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Question

80 pound bags cover how much

Asked by
Jack
about 80 lb. Concrete Mix on
July 12, 2015
I am pouring a 16ft X 9ft X6in how many 80 bags do I need
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answer 1
Asked by
QUIKRETEProductExpert
July 13, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet when placed. A 16 ft x 9 ft x 0.5 ft application will require 72 cubic feet of concrete, or 144 80 lb bags. Yields will vary based upon waste, uneven subgrade, etc.
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Question

How many 80 pund bags would i need to pour a walkway that is 15 feet long by 4 1/2 feet wide with a depth of 6 inches?

Asked by
tna1
New Hampton, NH
about 80 lb. Concrete Mix on
July 11, 2015
trying to figure out how many bags I would need to purchase for my front walkway if I bought the 80 pound bags?
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answer 1
Asked by
QUIKRETEProductExpert
July 13, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet when placed. A 15 ft x 4.5 ft x 0.5 ft application will require 33.75 cubic feet of concrete, or 56-57 80 lb bags. Yields will vary based upon waste, uneven subgrade, etc.
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Question

What can "ruin" cement?

Asked by
mtngrl821
about 80 lb. Concrete Mix on
June 23, 2015
I hired someone to pour two 12'x12' round concrete slabs in my backyard. When I checked on the guy's progress, I noticed that the cement for the first slab looked very rocky - not at all smooth. And he had come up short, so went to get more #Home Depot is 5 minutes from my house#. When the guy finally returned #3 hours later!# he told me that the product was defective #"had too much rock in it"#. But I think the problem was that he poured in the middle of the day in 100 degree heat, and then let it sit for 3 hours in the heat. The guy's "helper" kept the concrete wet while he was gone.
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answer 1
Asked by
QUIKRETEProductExpert
June 24, 2015
You are right - Pouring concrete in high heat requires special precautions. Proper planning before starting a concrete project can significantly improve placement characteristics and assure the quality and durability of the in-place concrete. There are multiple precautions that are typically considered when pouring a quality concrete slab in the heat – not all are absolute requirements, but should be considered given the particular circumstances of a job: Dampen the substrate and form work with cool water prior to concrete placement. Use cool mixing water to reduce initiate concrete temperatures. Store bags of QUIKRETE® Concrete Mix in a shaded area. Construct temporary wind-breaks to reduce wind velocity and sun-shades to reduce concrete temperatures. Consider placing concrete early or later in the day when ambient temperatures are cooler. Apply QUIKRETE® Acrylic Concrete Cure & Seal immediately after finishing procedures are completed to prevent surface moisture loss. Have plenty of help to allow for the reduced placement and finishing time of the concrete. Keeping material mixing and continually adding water can cause problems. Please call the QUIKRETE® Technical Center at 1-800-282-5828 if you would like to discuss further.
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Question

Can a cement walkway be curved?

Asked by
mtngrl821
about 80 lb. Concrete Mix on
June 23, 2015
I hired a landscaper to do some work in my backyard, including pouring two walkways. One walkway was to be slightly curved to match the existing landscaping already in place. The landscaper changed the curve to straight, saying that a curve would not work because the edge where the cement ends would be weak and prone to breakage. Was he correct?
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answer 1
Asked by
QUIKRETEProductExpert
June 23, 2015
It is possible to design and pour concrete that has curves rather than straight lines. 1/4" plywood, masonite, or lauan plywood are some of the materials that are often used as forms for curved concrete. Please call the QUIKRETE® Technical Center at 1-800-282-5828 if you would like to discuss further.
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Question

do you have the quickcrete with the brown river rock in it?

Asked by
tiger
about 80 lb. Concrete Mix on
June 22, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 22, 2015
The coarse aggregate which is used in the QUIKRETE® Concrete Mix will vary by region. Please check our website to find the QUIKRETE® location nearest to you for further assistance at http://www.quikrete.com/OnTheJob/Locations.asp.
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Question

how many bags for 2ft by 23ft by 2 inches deep

Asked by
peewee
houston
about 80 lb. Concrete Mix on
June 22, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 22, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. For an application that is 2 ft x 23 ft x 0.167 ft (2 inch), 7 2/3 cubic feet of concrete, or 13 80 lb bags of concrete mix will be needed. A standard slab is typically 0.33 ft (4 inch) thick, which would require twice as much concrete. Yields will vary based upon waste, uneven subgrade, etc.
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Question

38'x12"x12"deep please help

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alex
about 80 lb. Concrete Mix on
June 21, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 22, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. For an application that is 38 ft x 1 ft x 1 ft, 38 cubic feet of concrete, or 63 – 67 80 lb bags of concrete mix will be needed. Yields will vary based upon waste, uneven subgrade, etc.
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Question

how many 80lb bags of concrete do i need for a hole 40"x28"x24"

Asked by
BigAl
rushford,ny
about 80 lb. Concrete Mix on
June 21, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 22, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. For a hole that is 40 inch x 28 inch x 24 inch, 15 1/2 cubic feet of concrete, or 26 80 lb bags of concrete mix will be needed. Yields will vary based upon waste, uneven subgrade, etc.
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Question

how many 80lb bags do i need for a 35'x4'x2" trench

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cm20
about 80 lb. Concrete Mix on
June 16, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 18, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. To fill a trench that is 34 ft x 4 ft x 0.167 ft (2 in) will require 23 1/3 cubic feet of concrete, or 39 80 lb bags. Yields will vary based upon waste, uneven subgrade, etc. If the subgrade is dirt, you will need to ensure that it is tamped down adequately to prevent future settling, or the concrete used to fill the trench could ultimately settle with it, and potentially crack. Greater than 2 inch layer of compacted gravel underneath the concrete is standard for slabs to stabilize the base, although that does not seem possible for your application. Please check any local building codes to ensure that your project is compliant. If you want to discuss your project in further detail, please contact the QUIKRETE® Technical Center at 1-800-282-5828.
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Question

how many bags are needed for a 20ft L X 4ft D x 1ft W

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pete
about 80 lb. Concrete Mix on
June 13, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 15, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. An application that is 20 ft x 4 ft x 1 ft will require 80 cubic feet of concrete, or 133-134 80 lb bags of Concrete Mix. Yields will vary based upon waste, uneven subgrade, etc.
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Question

can i use this mix for a propane tank landing for the house i live in?

Asked by
tuggboat
coventry, ri
about 80 lb. Concrete Mix on
June 11, 2015
if not....what is the right type for this use?
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answer 1
Asked by
QUIKRETEProductExpert
June 12, 2015
QUIKRETE® Concrete Mix #1101 exceeds the compressive strength requirements for normal strength concrete as described in ASTM C 387. When tested under standard laboratory conditions in accordance with that specification, it will achieve or exceed a compressive strength of 2,500 PSI in 7 days and 3,500 PSI in 28 days, with a typical 28 day value being 4,000 PSI. Please check local building codes to ensure that the product strength, and other project design criteria for your propane tank landing, are compliant. Please contact the QUIKRETE® Technical Center at 1-800-282-5828 if you have further questions.
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Question

im pouring 4 slabs 18in.x6ft.x3 1/2in. how many bags of quikrete do i need?

Asked by
1333
q ,illinois
about 80 lb. Concrete Mix on
June 8, 2015
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answer 1
Asked by
QUIKRETEProductExpert
June 9, 2015
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete. For each slab that is 1.5 ft (18 in) x 6 ft x 0.29 ft (3.5 inches) thick, 2.6 cubic feet of concrete would be needed. For 4 of these slabs, 10.5 cubic feet of concrete, or 17-18 80 lb bags would be needed. Standard slabs are typically 0.33 ft (4 inches) thick, which would require 3 cubic feet per slab. For 4 of these, 12 cubic feet, or 20 80 lb bags would be needed. Yields will vary based upon waste, uneven subgrade, etc.
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Question

Can i use it this in a fire place?

Asked by
ghaazi
frisco
about 80 lb. Concrete Mix on
May 25, 2015
The fireplace can reach a temperature of more than 900 C or 1650 F
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answer 1
Asked by
QUIKRETEProductExpert
May 27, 2015
No, Portland cement, the base material out of which standard concretes are made, can degrade in temperatures as low as 200 degrees F. Because of this, products used within the firebox of a fireplace, or near high temperatures, should be made of refractory cement, which is designed to be able to withstand exposure to high temperatures, rather than Portland cement. Only if the material is being used on the fireplace façade, far enough away from the firebox that it will NOT be exposed to these high temperatures, can the QUIKRETE® Concrete Mix be used.
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answer 2
Asked by
CommunityAnswer
May 26, 2015
No, this concrete is not rated for use in a fireplace.
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