Model # 100450

Internet #100318521

Store SKU #842303

Quikrete 50 lb. Fast-Setting Concrete Mix


50 lb. Fast-Setting Concrete Mix

  • Sets quickly in just 20-40 minutes
  • Sets posts with no mixing required
  • Easy to use by simply adding water
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Product Overview

Quikrete 50 lb. Fast-Setting Concrete Mix is a special blend of fast-setting cements, sand and gravel. Designed to set hard in 20-40 minutes. Sets posts without mixing.

  • Used to set mailbox posts, fence posts and lamp posts without mixing
  • Pour dry mix into hole and soak with water
  • Also use for building steps, sidewalks and slabs where rapid set time is required
  • Exceeds the requirements of ASTM C387
  • 4000 psi in 28 days
  • Each 50 lb. bag will yield approximately 0.375 cu. ft. of mixed concrete
  • Learn more about concrete and cement here in our Buying Guide
  • Note: product may vary by store

Info & Guides

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Coverage Area (cu. ft.)
Product Depth (in.)
Product Height (in.)
Product Length (in.)


Color Family
Compression strength (psi)
Fast Setting
Mix Type
Fast Setting
Overhead Use
Product Weight (lb.)
Use Location
Working time (min.)

Warranty / Certifications

Manufacturer Warranty
See packaging

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Customer Questions & Answers

can i use quikcrete to set a horseshoe stake in a five gallon bucket?

Asked by: Dave
Answered by: Jared
Date published: 2017-01-30

Do you need to add Rock?

Do you need to add rock and all purpose sand to quickrete when filling a fence post hole. Thank you :)
Asked by: Shanster
Not necessarily but it is advised for strength
Answered by: TheAnswer
Date published: 2017-04-21

Will fast-setting concrete bond to dry concrete?

I am leveling an 8' x 8' slab for a hot tub.
Asked by: Markest
yes, the best to use a fortifier instead of water.
Answered by: mindless06795
Date published: 2015-11-11

Can it be used in cold weather?

The temperature drops to around or a bit below freezing at night, but is above freezing during the day. I want to put in some fence posts.
Asked by: JanLaw
I have used this produce in the same type of weather to make support blocks 16x24x8 above ground--But I protected it from freezing overnight with the use of insulation blankets. No harm seemed to be done to the blocks--but you are taking a chance.--If it freezes before it cures and the moisture is out it will crack.
Answered by: Rockrat
Date published: 2017-01-07
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Customer Reviews

50 lb. Fast-Setting Concrete Mix is rated 4.4 out of 5 by 57.
Rated 5 out of 5 by from I bought 68 bags to use as a flag pole base. i did not fully trust the claims of " Just pour wate... I bought 68 bags to use as a flag pole base. i did not fully trust the claims of " Just pour water on top and let it sink in" so i tested it. I cut the top off a clear 5 gallon water bottle and poured a half a bag in, poured the required water on top and let it alone. the water could be seen creeping down and through the concrete mix. In about 15 minutes it was mostly saturated. I added the second half of the bag on top and poured the required water on top to test the joint between the two. Same result, full saturation in about 15 minutes. After a few days of sitting i unwrapped the plastic bottle from around the concrete, picked up the block and dropped it, hit it with a hammer, could not break the block at the joint. Very impressive.
Date published: 2017-03-07
Rated 5 out of 5 by from A Few Glitches but Awesome Product. Sold in 60 pound bags, not 50 as listed on the net, no big de... A Few Glitches but Awesome Product. Sold in 60 pound bags, not 50 as listed on the net, no big deal but caused some confusion with my on-line order vs when I picked it up. I'm a cement newbie but need to re-align a few old fence posts so gave this a try. The first time I poured dry into the hole, saturated the area with water and kinda poked at it with a shovel. Water eventually all absorbed so don't think I overdid it. Didn't truly set for 3 days so probably shy on the agua. The second time I poured dry, saturated then mixed with my hand and a trowel as deep as I could go until it became a uniform slurry...then I added some dry to the top before it cured, wetted just a bit..set rock hard in <1 hour. I did buy a bottle of Sika Pro Select Concrete Bonding Adhesive @ Acrylic Fortifier in case I have to use this product along with old post concrete that I can not get out.
Date published: 2017-04-01
Rated 5 out of 5 by from Works well I have used this product before and it worked just as well this time. I'm a small woman so the difference between a 50lb bag and 80lb bag makes a difference. Also I don't have to premix which also takes a lot of physical strength. I do pour it in the hole pour in the right amount of water and use a piece of rebar to make sure the water mixes well with the concrete mix all through. I put up a chain link fence oh maybe 10 years ago. No sign of any cracks all standing well. Doing better than the concrete where the fence builder I paid to put up the privacy fence put in his post holes.
Date published: 2016-08-23
Rated 5 out of 5 by from Quick and easy I purchased a few bags of Quikcrete fast settling concrete from Home Depot, to install a couple 4x4 posts in my yard over the weekend. I had never used this product before so when I saw it in the store, I jumped at the chance to avoid mixing cement in a wheelbarrow with a shovel. The product worked exactly as described. After putting gravel in the hole and leveling the post, I dumped 3 bags in per hole, as the guide on the package recommended. I added roughly 3 gallons of water (1 gallon per bag) and walked away. After a couple hours the top of the cement had hardened. After 4 hours, the post was solid and I finished my project the same day. This project was supposed to take a couple weekends to complete but thanks to Quikrete, I finished in a day.
Date published: 2013-04-09
Rated 5 out of 5 by from Excellent quick set Great for finishing smaller projects like concrete landing, steps, pads, great finish plenty of cement in the mix.
Date published: 2017-03-21
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2017-04-22
Rated 5 out of 5 by from Works Great This stuff works great. My boyfriend and I put a privacy fence in our back yard. Once the holes where dug for the posts everything went so smooth and quick. Just poured in the Quickrete and added water. Within no time it set and the posts where ready to go. It went so fast. We would get a few set and then do a few others and while those set we would start putting up the panels. It was quick, smooth easy and hassle free. My boyfriend and I did the entire yard in one day and never argued once. That right there is priceless!!!
Date published: 2010-05-05
Rated 5 out of 5 by from The product worked exactly as intended. The in store pick-up was less than impressive... I waited... The product worked exactly as intended. The in store pick-up was less than impressive... I waited 1 1/2 hours to get 2 pallets of concrete loaded. Customers can't afford to waste 20 to 25 percent of their day. to pick up supplies!
Date published: 2017-01-18
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