AASHTO Designation: T 256-01 (2006) pdf free download

Standard  Method of Test for

Pavement Deflection  Measurements

AASHTO Designation: T 256-01 (2006)


AASHTO Designation: T 256-01 (2006) pdf free download

1.1.This test method provides standards for measuring pavement surface deflections, directly under, or at locations radially outward (offset) from a known static, steady-state, or impulse load.

Deflections are measured with sensors that monitor the vertical movement of a pavement surface due to the load.

This test method describes procedures for the deflection measurement using various deflection testing devices and provides the general information that should be

obtained regardless of the type of testing device used.

1.2.This test method is applicable for deflection measurements performed on flexible asphalt concrete (AC), rigid portland cement concrete (PCC), or composite

(AC/PCC) pavements. Rigid pavements may be plain, jointed, jointed reinforced, or continuously reinforced or fractured concrete.

1.3.The values stated in SI units are to be regarded as standard. Inch-pound units given in parentheses are for information purposes only.

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