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# 80 lb. Concrete Mix

• Ideal for pouring concrete slabs and setting post
• 4000 psi average compressive strength

## Product Overview

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.

• Use for making repairs to foundation walls, walkways or steps and setting mailboxes and posts
• For pouring concrete 2 in. thick or more
• 60 minute working time
• High-strength 4,000 psi concrete
• Meets ASTM C 387 compressive strength requirements

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This question is from 80 lb. Concrete Mix

# how many 80 pound bags of concrete will be need to fill a hole 18 square feet and two inches deep?

This question is from 80 lb. Concrete Mix
boonie
December 20, 2012
-1point
0out of 1found this question helpful.

vermont
March 31, 2016
Wow, 18 square feet is NOT the same as 18X18 as some previous answerers have offered. 18 square feet might be 9 ft x 2 ft or 3ft x 6ft, etc. - doesn't matter - the point is that the length and width have already been multiplied together.
You only need to multiply 18 by the depth to get cubic feet. (volume = L x W x D#
The depth is given in inches so it is actually 2/12 of a foot #0.1666 ft).
Wow, 18 square feet is NOT the same as 18X18 as some previous answerers have offered. 18 square feet might be 9 ft x 2 ft or 3ft x 6ft, etc. - doesn't matter - the point is that the length and width have already been multiplied together.
You only need to multiply 18 by the depth to get cubic feet. (volume = L x W x D#
The depth is given in inches so it is actually 2/12 of a foot #0.1666 ft).
18 x 0.1666 = 3 cubic feet
Each bag of concrete fills 0.6 cubic feet so just divide 3 by 0.6 = 5 bags.
+17points

February 17, 2016
3 holes 6 inches in diameter by 3 ft deep how many bags will I need?
+11points

vancouver Wa
Home Improvement Profile: Other
January 20, 2016
how many 80 pound bags of concrete will be need to fill a 20 feet long and 4 feet high six inches with
+12points

Corpus Christi, Tx
Home Improvement Profile: DIYer
October 10, 2015
5 bags
The formula for cubic feet is (length x width x height)
you have (length x width) 18 square feet
18 square feet x .166 = 2.98 cubic feet (converted 2 inch to .166) 1 inch converted is .083
2.98 cubic feet divided by .66 = 4.5 bags (if 1 bag = .66 cubic feet)
+12points

LAKE TRAVIS, TX
Home Improvement Profile: Professional
November 19, 2013
90 BAGS
18 feet X 18 feet X 2 inches thick = 54 cubic feet
1 yard = 27 cubic feet
54 divided by 27 = 2 yards
45 bags per CUBIC yard
2 yds X 45 bags = 90 bags
1 bag = .6 cu ft
90 bags X .6 = 54 cubic feet
-79points

Brookhaven
January 2, 2013
5 bags. Get 6 just in case you have low spots
-3points

Round Rock, TX, USA
December 25, 2012
6 should do it but buy 7 just to be sure. Quickcrete has an online calculator that you can access. I always come up a little short when I use it though.
-5points

December 21, 2012
One 80 lb. bag of QUIKRETE Concrete Mix yields approximately 0.6 cubic feet when placed. If the hole has dimensions of 18 feet x 18 feet x 2 inches, the volume to be filled is ~54 cubic feet, and approximately ninety 80 lb. bags will be required to fill it. If the hole has dimensions of 3 feet x 6 feet x 2 inches, totaling 18 square feet x 2 inches, the volume to be filled is ~3 cubic feet, and
One 80 lb. bag of QUIKRETE Concrete Mix yields approximately 0.6 cubic feet when placed. If the hole has dimensions of 18 feet x 18 feet x 2 inches, the volume to be filled is ~54 cubic feet, and approximately ninety 80 lb. bags will be required to fill it. If the hole has dimensions of 3 feet x 6 feet x 2 inches, totaling 18 square feet x 2 inches, the volume to be filled is ~3 cubic feet, and approximately five 80 lb. bags will be required to fill it. This will be affected by uneven sub grade, waste, etc.
+21points
This question is from 80 lb. Concrete Mix

# hoow many bags of 80 lbs quick crete

This question is from 80 lb. Concrete Mix
freetown
March 18, 2016
my project is a floor that is 5" thick x 8' wide x 20' long
0points
0out of 0found this question helpful.

Reynoldsville Pa
March 22, 2016
how many bags of 80lb concrete will it take to pour 4 2ft by 2ft by 4inch slabs
+7points

March 21, 2016
An 80 lb bag of QUIKRETE Concrete Mix yields 0.6 cubic feet of concrete. A floor that is 8 ft x 20 ft x 0.42 ft (5 inches) will require 66 2/3 cubic feet of concrete, or 111.1 bags (of 80 lb each). Yields will vary based upon waste, uneven subgrade, etc. For a project of this size, it is crucial that you have sufficient equipment and man power to either allow you to pour the entire application before any
An 80 lb bag of QUIKRETE Concrete Mix yields 0.6 cubic feet of concrete. A floor that is 8 ft x 20 ft x 0.42 ft (5 inches) will require 66 2/3 cubic feet of concrete, or 111.1 bags (of 80 lb each). Yields will vary based upon waste, uneven subgrade, etc. For a project of this size, it is crucial that you have sufficient equipment and man power to either allow you to pour the entire application before any of the material has set, OR pour 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 application 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. Be sure to check local building codes to ensure compliance.
+9points

March 19, 2016
You will need approximately 115 bags for your project.
0points
This question is from 80 lb. Concrete Mix

# How many bags to make a yard?

This question is from 80 lb. Concrete Mix
March 9, 2016
0points
0out of 0found this question helpful.

March 12, 2016
each 80 lbs makes .6 aq ft. a square yard is 27 sq ft. so 27/.6 = 45 bags to make a yard.
call a supplier. That's a lot of bags.
+4points

March 10, 2016
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete when placed. A cubic yard consists of 27 cubic feet, which would require 45 bags (of 80 lb each) of QUIKRETE® Concrete Mix. Yields will vary based upon waste, uneven subgrade, etc. For a project utilizing this much concrete, it is crucial that you have sufficient equipment and man power to either allow you to pour the entire
An 80 lb bag of QUIKRETE® Concrete Mix yields 0.6 cubic feet of concrete when placed. A cubic yard consists of 27 cubic feet, which would require 45 bags (of 80 lb each) of QUIKRETE® Concrete Mix. Yields will vary based upon waste, uneven subgrade, etc. For a project utilizing this much concrete, it is crucial that you have sufficient equipment and man power to either allow you to pour the entire application before any of the material has set, OR pour 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 application 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. Be sure to check local building codes to ensure compliance.
+20points

March 9, 2016
You would need 45 80 lb bags for a yard.
+7points
This question is from 80 lb. Concrete Mix

# What is the strength rating

This question is from 80 lb. Concrete Mix
Astro
Hudson, NH
January 2, 2013
is it 4000 PSI?
0points
0out of 0found this question helpful.

January 4, 2013
Yes. 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.
+3points

Round Rock, TX, USA
January 3, 2013
Yes according to the Quickrete website
+1point

Brookhaven
January 2, 2013
7 days has a psi rating of 2500
28 days has a psi rating of 4000
slump range of 2"-3"
+1point
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## Customer Reviews

Rated 4.6 out of 5 by 39 reviewers.
Rated 5.0 out of 5.0 by Quick upon mixing and putting in place was quick and easy set well September 27, 2016
Rated 1.0 out of 5.0 by expensive lesson This stuff is in most cases 92% gravel, 7% sand, and 1% cement. I could not even doctor this garbage to make it good. There is no consistency from one bag to the next. I had one good bag out of eight 7 got used to fill a big hole in back of house so I got some use out of it. I returned the other 8 bags. Mix your own these people do not know what concrete is. I could not even recommend this for posts. I gave it one star for teaching me a lesson. July 9, 2016
Rated 2.0 out of 5.0 by Inconsistent I had previously used the Sacrete brand, but ran out before the project was complete and bought this instead to finish. In the ten bags I used, four of them seemed to be missing much of the cement from the mix. Dry it looked very rocky, and when mixed they had a very runny grey watery consistency that ran right through the rock. Filling the voids in my driveway, it just got worse. It was just pushing wet gravel around with some grey soup in the bottom of the hole. Not impressed, and I cannot reccomended this product based on variation. Even though all bags used had what looked like the same lot number under a flap of bag on the bottom, 4/10 were definitely different blends. April 11, 2016
Rated 5.0 out of 5.0 by Good Concrete I've used this concrete in the past and decided to put up a wooden privacy fence at our new home and went with this concrete again. It works well if mixed right and you can't beat the price it was on sale at. \$2.88 for an 80lb. bag. Not bad at all. Will continue using it as long as it works as it always has for me. May 3, 2016
Rated 5.0 out of 5.0 by Great Product Just purchased 50 bags for a project with delivery by HD. Cement arrived well packaged on pallet and in good condition. Product is easy to mix and to work. I've used it before with great results. This project was no different. May 1, 2016
Rated 5.0 out of 5.0 by great product I am a 65 year old woman. I have used this product several times in the past years. I recently poured a cobblestone walkway to my hottub by myself. I used the sand to fill in. Love this product August 20, 2013
Rated 5.0 out of 5.0 by add 5 quarts of water works as expected. use 80lbs to secure 2 fence posts. 40lbs each. mixes well in a wheel barrel with just 5 quarts of water per 80lb bag. i premixed for my fence posts then dropped in hole. some people dump it in the hole dry then add water but the water only soaks the outside and leaves powder cement around the inside of the post. don't be lazy. premix it before dropping in hole. May 16, 2015
Rated 5.0 out of 5.0 by Slab If I'm building a slab 18/17 5-6 yards , how many bags would I need? July 15, 2015
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