What is 60/70 grade?
"60/70 grade" is a term commonly used in
construction and engineering to refer to the strength of a material, typically
concrete or asphalt. In this context, the "60" refers to the
compressive strength of the material in pounds per square inch (psi) after 28
days of curing, while the "70" refers to the tensile strength of the
material in psi.
So, a 60/70 grade material would have a compressive
strength of 60,000 psi and a tensile strength of 70,000 psi. These values are
commonly used as standards to assess the quality of concrete and asphalt and to
determine if they are suitable for use in a particular construction project.
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