Constructions that require the concrete to withstand 40 Newtons of compressive force.
The number relates to the compressive strength of a cube of concrete when tested (i.e. 30 N/mm2 or 40N/mm2) The higher the number the greater the strength of the concrete. The choice of concrete grade is usually made at the design stage for the strucutre and effects the overall strength and resistance of the strucutre to decay. You would use a higher strength concrete in a more exposed environment. It is important to use the concrete grade specified for the proposed strucutre.
the M150 grade concrete is today's hardest concrete and it has a optimal water composition of 0.18 to 0.28 percent . there is no composition for this concrete it is derived through experiments . used in very heavy structures . it has not used in india .
Which Grade?
What is mixing ratio for concrete grade 30
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
What is equivalent to c40 grade material
1:1.5:2.5
The concrete that gives a compressive strength of 40 N/mm2 when its cube is tested.
st4 is just a standard type concrete probably comparable to c40 structural concrete, pav 2 is the equivalent to c35 concrete with air bubbles, mostly used in paving works
The number relates to the compressive strength of a cube of concrete when tested (i.e. 30 N/mm2 or 40N/mm2) The higher the number the greater the strength of the concrete. The choice of concrete grade is usually made at the design stage for the strucutre and effects the overall strength and resistance of the strucutre to decay. You would use a higher strength concrete in a more exposed environment. It is important to use the concrete grade specified for the proposed strucutre.
M40
M25
Yes. OPC 43 grade cement can be used to make M20 grade concrete.It can be used to make concrete up to M30 Grade.See related link.
M25 - M40 can be used..
the M150 grade concrete is today's hardest concrete and it has a optimal water composition of 0.18 to 0.28 percent . there is no composition for this concrete it is derived through experiments . used in very heavy structures . it has not used in india .
Which Grade?
What is mixing ratio for concrete grade 30