cement consumption in M-25
100lits
m15- 6.25 m20 - 6.8 m25 - 7.5 m30- 8.5 m35- 9 m40 - 10
proportion of M30 Grade of concreete is 1 :.5 :1 .
1:2
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
the ratio is 1:1:2... so 1 bag of cement is used..ie; cement:sand:aggregate....
10.94 bags
100lits
m15- 6.25 m20 - 6.8 m25 - 7.5 m30- 8.5 m35- 9 m40 - 10
M25
M25 sand in1cum
M25 - M40 can be used..
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.
One cubic metre of concrete weighs 2.5 Tonnes. Typically, 1m3 of concrete is made up of 350Kg of cement, 700Kg of sand, 1,200Kg of chippings and 150 Litres of water.
proportion of M30 Grade of concreete is 1 :.5 :1 .
M25
It depends on the Grade of Concrete. general grades are M15, M20, M25 etc. here are the nos. of bag required -------------------Bag for 1 cum---------------Bag for 5 cum M15------------------- 6.4----------------------------32 M20-------------------- 8-----------------------------40 M25--------------------12----------------------------60