Roof Concrete Mix Ratio

If i break the weights down per cubic yard of concrete it comes to.

Roof concrete mix ratio.

To know the concrete mix design follow below. The lower the w c ratio the higher the concrete strength. Where cement concrete 1 1 5 3 is used. 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.

In case of single or two story house the ration of concrete mix will be 1 2 4. This type of mix makes the roof slab strong. 702 5 pounds of cement. 1587 pounds of stone.

To make ease in understanding we are finding the concrete mix design of m20 grade concrete. As long as you re consistent you ll get a good strong mix. It can be measured easily on standard sized cube 15 cm and is often taken as an index of the overall quality of concrete. Of 50 kg bag of cement 0 42 m 3 of sand and 0 83 m 3 of stone aggregate.

This gives you a basic 4500 psi concrete mix ratio of. Example calculation estimate the quantity of cement sand and stone aggregate required for 1 cubic meter of 1 2 4 concrete mix. 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. The correct proportion of water should be like this.

When we take concrete mix in a plate it should become like a scoop. Never ever add excess water to mix concrete. 2 26 parts stone 1 73 parts sand. The mix ratio of 1 2 3 consists of 1 part cement 2 parts sand and 3 parts stone plus some water to make a concrete mix you can use for most any building project.

Concrete mix ratio compressive strength is the most important property of hardened concrete. Labor guideline for steel bars in rcc. Rounded off it s basically a 1. 2 concrete mix ratio.

Materials required are 7 nos. 1217 pounds of sand. The concrete mix ratio for m20 grade of concrete is 1 1 5 3 that mean 1 part of cement 1 5 part of sand fine aggregate and 3 parts of aggregate crushed stone in volume and then batched for mixing. It means 1 part of cement 1 5 part of fine aggregate coarse sand and 3 parts of coarse aggregate.