Normally it's a one-two-three mix. One part cement, 2 parts sand, 3 parts aggregate. The sand is graded which means it has a variety of grain sizes.
Builders use the design mix concrete because of the economical and environmental concerns.
design of r.c.c cantilever beam is based on the
Lean mix concrete is used for substructures like foundations,piles,etc.,Ready mix concrete is used for superstructures and also for mass construction.Generally, quality of ready mix concrete is good when compared to the lean mix concrete.Workability of lean mix concrete is high when compared to RMC.
1:2
more details about 30N concreate
weight of 1 cubic mitre of concrete
1:2
Lean mix concrete is used for substructures like foundations,piles,etc.,Ready mix concrete is used for superstructures and also for mass construction.Generally, quality of ready mix concrete is good when compared to the lean mix concrete.Workability of lean mix concrete is high when compared to RMC.
Concrete mix is made from (sharp)sand, cement, aggregate and water. The ratios depent on the usage
1:2
Concrete mix is made from (sharp)sand, cement, aggregate and water. The ratios depent on the usage
Concrete :- a mix of cement, sand, water, and gravel. Mortar :- a mix of cement, sand, and water
Concrete :- a mix of cement, sand, water, and gravel. Mortar :- a mix of cement, sand, and water
The strength of concrete depends on the mix used to make it- ratio of cement, sand, gravel and water. If the mix does not produce a concrete that is strong enough, the concrete will break.
Its the process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.
The concrete mix should be a 5:1 Cement to water ratio. make sure you mix thoroughly when adding water. Look up "Concrete slump test"
That depends on exactly what use that particular concrete mix is for.
The mix proportion for M40 concrete is 1:1.65:2.92W/C ratio = 0.4The design calculation is as per IS mix design
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