how do i make homemade concrete?

Question

i need to make about 20 gallons of concrete from home supplies for a project.I need the instructions asap

Answer 1

What, like you can't just buy the mix? That'll work better if this is for any real purpose.

If you're going for some sort of "survivor" thing, and want to make it yourself, you will need some sand, some gravel, and some lime. (no, not citrus fruit, lime!)

OK, so, the sand and gravel isn't too hard to get, but what the heck is lime if it isn't related to a lemon, right?

Well, you can get lime from most gardening supplies. It's a pretty caustic powder, so don't go getting it on you and soaking it.

IF you really need to go native, lime is made of calcuim carbonate, and heat-treated to become reactive. This means that you can start with shells, or limestone, and heat them over a fire. Eventually, they're supposed to break apart into this powder called lime, and then when you add water, it'll sort of turn back into limestone.

Sometimes volcanic ash will work as lime, but you're not too likely to have a heap of that lying around anywhere.

Answer 2

Concrete is measured in CU Ft that is Cubic Feet or CU YDs Cubic yards to begin with , not gallons

An 80# bag of redimix is 2/3 cu ft, a 40# bag make 1/3 rd cu ft

1 80# bag plus 1 40 # bad is needed for a 12"x12"x12" cube

Get some dimensions maybe they can help you at HD, If not go to you local lumber yard where the will be some one that can help

Answer 3

Get cement and sand and mix it well with water. Check what proportions of cement and sand you need, which would be based on the use of the concrete.

Answer 4

Mix one shovel full of portland cement to three sand and four gravel, add water and mix. The cement bag will give the exact amounts.

Answer 5

Read a bag of concrete.

Answer 6

buy bag cement at lowes mix it with water let it dry

Answer 7

rocks,water,black and white food coloring.a little grape juice and a leaf or two