Roof Concrete Mixing Ratio
Concrete mix ratio compressive strength is the most important property of hardened concrete.
Roof concrete mixing ratio. Rounded off it s basically a 1. If i break the weights down per cubic yard of concrete it comes to. 2 26 parts stone 1 73 parts sand. The 1 2 3 ratio s make up is described right in its name.
1587 pounds of stone. It means 1 part of cement 1 5 part of fine aggregate coarse sand and 3 parts of coarse aggregate. The lower the w c ratio the higher the concrete strength. This ratio of concrete also gives very high strength of cement concrete and is recommended for following works.
1217 pounds of sand. Size of aggregates mm water for dry aggregates liter water for aggregates condition from dry to moist batch liter water for best consistency liter small precast work fence posts poles garden furniture and other work of very thin sections. To produce a cubic yard of 4000 psi concrete you have to adjust the concrete mixing ratio to. To that end this ratio is made up of 1 part cement powder 2 parts sand and 3 parts washed aggregate.
Mixing water with this cement sand and aggregate will form a paste that will bind the materials together until the mix hardens. This gives you a basic 4500 psi concrete mix ratio of. Where cement concrete 1 1 5 3 is used. You can also estimate the quantity of sand and gravel required by weight.
Water can then be added at any desired volume to achieve the desired consistency. Structure carries in heavy loads. Labor guideline for steel bars in rcc. 2 concrete mix ratio.
This concrete mixture ratio of 1 part cement 1 parts sand and 3 parts aggregate will produce a concrete mix of approximately 2500 to 3000 psi. It can be measured easily on standard sized cube 15 cm and is often taken as an index of the overall quality of concrete. All materials used for a design including the water quality should be to a high standard. Water cement ratio theory states that for a given combination of materials and as long as workable consistency is obtained the strength of concrete at a given age depends on the w c ratio.
702 5 pounds of cement.