Concrete mix is made from (sharp)sand, cement, aggregate and water. The ratios depent on the usage
1:2:4
In this M refer to Maximum compressive strength and 20 refer that concrete that with stand upto 20KN compressive strength.
For nominal Mix Cement consumption for M25 will be 570 kg per cum. and for Design Mix it can be optimised to 510 kg per cum.
Volume componentsGrade 20 concrete 1:2:4 (cement:sand:aggregate)Grade 25 concrete 1:1.5:3 (cement:sand:aggregate)Grade 30 concrete 1:1:2 (cement:sand:aggregate)See related link below for more info
1:1.5:3
it is concrete mix which gain strength 20kn/mm2 in 28 day of curing....
80cft
M20 refers to the grade of the concrete generally used in construction purpose. Here, M refers to mix & number 20 refers to the characteristic strength of concrete. the proportions of this grade is (1:1 1/2: 3). Along with this there are some more grades used in constructions i.e., M5, M7.5, M10, M15, M25, M30................. M80
M20 Mrefers to mix and 20 refers to 20 n/mm2 strengh and M200 mix 200n/mm2
For M20 grade concrete, the mix proportion is 1:1.5:3 (cement:sand:coarse aggregates). If we consider a volume of 1 cubic meter, approximately 320 kg of cement would be needed.
does not exceed 30N/mm2
density of send and aggrigate
Concrete mix is made from (sharp)sand, cement, aggregate and water. The ratios depent on the usage
Concrete mix is made from (sharp)sand, cement, aggregate and water. The ratios depent on the usage
1:2:4
In this M refer to Maximum compressive strength and 20 refer that concrete that with stand upto 20KN compressive strength.