w/c ratio for slab-on-grade mix
w/c ratio for slab-on-grade mix
(OP)
Our office standard is a w/c ratio of 0.45.
A ready mix supplier is telling my client that this will increase the chances of slab curling because the mix is more likely to dry unevenly (especially on a poly base). He also said drying shrinkage is more likely to be a problem. Finally, he said that the lack of bleed water will make the surface cure and not allow air or water to escape. This will cause blistering.
He is suggesting a mix with a w/c ratio of 0.55.
Can anyone comment on this?
A ready mix supplier is telling my client that this will increase the chances of slab curling because the mix is more likely to dry unevenly (especially on a poly base). He also said drying shrinkage is more likely to be a problem. Finally, he said that the lack of bleed water will make the surface cure and not allow air or water to escape. This will cause blistering.
He is suggesting a mix with a w/c ratio of 0.55.
Can anyone comment on this?






RE: w/c ratio for slab-on-grade mix
RE: w/c ratio for slab-on-grade mix
RE: w/c ratio for slab-on-grade mix
RE: w/c ratio for slab-on-grade mix
This is an interior Slab-on-grade. Are you saying that the extra cement contributes to shrinkage? I thought that the extra water in a higher w/c ration contributes to shrinkage.
RE: w/c ratio for slab-on-grade mix
RE: w/c ratio for slab-on-grade mix
RE: w/c ratio for slab-on-grade mix
RE: w/c ratio for slab-on-grade mix