ask santa
Why does concrete mix with low water cement ratio resulted in hardened concrete having higher strength than those with high water cement ratio?
water /cement ratio
A plain concrete with a large ratio aggregate to cement than structural concrete. It is used for filling and not structural duties
PCC in construction refers to Plain Cement Concrete, which is used as a preparatory base for laying RCC footing. Though PCC is also concrete, this is lean in nature, the ratio being 1:4:8. The compressive strength achieved with this mix is normally 7.5kN/sq.mm.
For M7.5 concrete, the common mix ratio is 1:4:8. This means:1 part cement 4 parts fine aggregates (sand)8 parts coarse aggregates. These ratio is by volume.
Why does concrete mix with low water cement ratio resulted in hardened concrete having higher strength than those with high water cement ratio?
the strength of concrete is effected by water /cement ratio as the water/cement ratio increases the strength of the concrete decreases
1:1.5:3:0.45 (cement,fine aggregate,coarse aggregate, water cement ratio)
you mean concrete I think? you need cement, sand and water in a specific ratio.
water /cement ratio
How to mix 4500 psi cement?
Approximately 5bags of cement are in 1 cu.m concrete ratio 1:3:6 with 20mm aggregate, water-cement ratio 0.5.
Water/cement ratio law states that the strength of concrete is only dependent upon water/cement ratio provided the mix is workable.Strength of concrete primarily depends upon the strength of cement paste.Similarly, the strength of the paste increases with cement content and decreases with air and water content.
If you are talking about shrinkage, then quite a bit. To make concrete, cement and water react together. There is a specific amount of water required to hydrate the concrete. Any water extra must leave the concrete and while it makes the concrete more workable, hurts the concrete is several ways. The volume of the concrete will change by whatever excess water you have added. To get workability, it's always best to use a water reducing admixture.
A plain concrete with a large ratio aggregate to cement than structural concrete. It is used for filling and not structural duties
1:2:4
I would mix it, 1 cement, 1 sharp sand, 4 ballast.