Easy High Strength Concrete Countertop Mix DIY
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- Опубліковано 15 сер 2019
- Products shown available at www.expressions-ltd.com. Make high strength concrete for countertops, furniture, etc. from a basic cheap bag of concrete by adding just a few things.
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cool !!work like magic thanks great video!!
Appreciate you brother 🙏🏽❤️🙏🏽
Super helpful. Lots of other mixes add pozzolan. Do you recommend this? I don't see this ingredient listed in any of your recipes.
Id say invest in a hose and spray nozzle your going to take all day using that measuring cup to get it to the right texture
Is it ok to leave the mix a bit dry, add plasticizer, and then if needed more water to finish?
Yes, you can add more water after for sure! The plasticizer just achieves the best reduction in your water need if you add it after most of the water is already in effect.
So i see a lot of people saying that you need to make your gfrc mix with 3% fibers by weight to get a 3/4 inch thin slab but you are adding only a handful. Is this because you are putting it in much thicker? What would you do different if this was for a thinner slab? Also saw you are in Utah. What part? That's where I'm out of!
That is the correct dosage % for AR Fiber in GFRC. However, this video is not for mixing GFRC- it is for mixing wetcast poured concrete (with pea gravel). GFRC is a different mix, and process but we do have the GFRC recipe on our website you can reference here: www.expressions-ltd.com/pages/concrete-mix-recipes
If I am pouring directly on cabinets on top of 1/2 inch cement board, can I just pour or do I need to have wire mesh in the middle of concrete?
Not sure if you still reply to this I'm getting ready to pour a 240 sf slab 6" thick. It's starting to get cold at night does this product decrease the cure time.
Thanks
Hi James, adding a polymer to concrete will speed up the time you can get out of the mold/take off forms. But not really accelerating the cure time. There are tricks to make good concrete in cold temps- use blankets on it after, use hot water when mixing, use type III Portland cement, and using up to 2% calcium chloride. Try to make sure you don't have any fly ash in your concrete mix too, when it's cold out!
Hi what brand and kinds of polymers do you have to use as I've seen lots of vids that have no mention of them or of a mix ratio. Or are you using premixed bags?
www.expressions-ltd.com/pages/concrete-countertop-mix-recipes
We do sell some pre-made bag mixes, a little spendy $$, but easy to work with and for many that's ideal- But for the most part we use the additives from the link above- to our recipe page, and create the mix for a much lower end cost.
How necessary would you say the plasticizer is?
Necessary? Guess that depends what you are trying to do. Plasticizer reduces the water needed to make the concrete workable. Less water means less to dry out and 'shrink' the concrete (cracking). So you can use more water and not use plasticizer, but you will be more prone to cracking, and the concrete will be less strong in the end. Plasticizer also greatly helps concrete flow into areas, so if filling a form (vertical for example) you will have less voids with the correct dose of plasticizer!
How much plasticizer is in the mix?
www.expressions-ltd.com/pages/concrete-countertop-mix-recipes
Is the extra Portland cement a absolutely needed part?
Yes! Basic concrete bag mixes have the minimum amount of portland cement in them, as the cement costs more $ than the sand/rock. More cements to better coat the sands/aggregates means more bonding strength (too much cement is bad though, as cement bonding to cement is weak)
Is there gravel on this mix?
In this particular mix yes- the basic bag of ready mix concrete (Quickrete in this video) has a pea gravel size aggregate and sand, and cement. Pea gravel size is usually 3/8" to 1/2" in size, and is suitable to use in concrete 1.5" to about 4" thick. Anything under 1.5" should be done with a sand-only mix, and anything over 4" thick should start to incorporate larger size gravel as well.
Thank you so much for this great information you always share!
Dude you do not need the sound for the mixing part lol
This video is sponsored by Mountain Dew
Ha! We've joked about hitting up Mt. Dew for a sponsorship actually. Could have a wall of green cans in the background for almost every video!