Concrete without Sand???
Concrete without Sand???
(OP)
Has anyone ever produced adequate concrete without the use of sand?? Not so hypothetically, assume local sources of sand are unavailable for environmental reasons, could a guy crush the local granite sufficiently small so as to produce not only the required aggregate but also the necessary fines?? Any special requirements , eg would all the plus say 0.25 material have to be screened out or would it be feasible to produce a spec that included ALL the minus 1 inch material??





RE: Concrete without Sand???
Crusher run base material for roadways is very close to your thought process. If you add cement to this, you can develop a reasonably strong concrete, assuming you are not looking for strengths that are over about 4000 psi. Also, your concrete will be somewhat more pervious than typical concrete, so be aware that less protection will be afforded to any reinforcing steel within the concrete. Further, bond development of rebar will likely suffer as there might not be sufficient fines for appropriate consolidation of the concrete around the rebar.
RE: Concrete without Sand???
RE: Concrete without Sand???
normally to produce a custom mix with non-standard materials, you would need to have the lab run some mix designs with the proposed materials. Since the construction is expensive and the downtime is even more expensive, it makes sense to pay for the lab work up front.
RE: Concrete without Sand???
RE: Concrete without Sand???
RE: Concrete without Sand???
http://theconstructor.org/building/properties-of-m...
RE: Concrete without Sand???
We had mix with 100% replacement with crush sand and it is complying it with all requirements like water permeability and RCPT.
I think its very common and you can contact local RMC to assist you in preparing a mix with manufactured sand and compatible plasticizers.
RE: Concrete without Sand???
Kieran