mpa what does it stand for in concrete?

Question

when ordering concrete from a supplier they ask you what strength of concrete you require for example 20 mpa, 40 mpa and so on what does the mpa stand for?

Answer 1

this is the compression strength of concrete
if u drow the stress strian diagram for a compression test for a concrete cube u find the compression stress

Answer 2

Mpa Concrete

Answer 3

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Well, most building codes dont allow us to use concrete strength lesser than 20 MPa as a structural concrete. That should be your first priority, investigate your local building codes or contact a local structural engineer. If you do wish to proceed with design, you should know that the concrete strength depends on the type of structural members. Columns need relatively larger strength than beams, but five years in this work and I have never witnessed use of 14MPa for structural use in reinforced concrete. Foundations relatively require lesser strength than the above members and with lean concrete you can go as low as 5MPa. But even if, hypothetically speaking, you design a member with that compressive strength I am definitely sure you will be calculating a member depth based on serviceability WAY to large to be feasible and I would imagine somewhere along the design that a complication will occur because of this. Anyway try to be safe with what you are attempting and always have supervision.

Answer 4

Megapascals (MPa) Metric unit of measuring compressive strength of concrete. Example 20MPa, 32 MPa.

Answer 5

Mpa means megapascal,SI unit for stresses and pressure. 1pascal=1newton/mm*mm. it deals with the strength of the concrete block if it has greater Mpa ,it has probably high compressive strength.

Answer 6

megapascals (a measure of pressure)
1 megapascals = 145.037738 pounds per square inch