ASTM D 4695 Standard Guide for General Pavement Deflection Measurements

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ASTM D 4695 Document Information:

Title
Standard Guide for General Pavement Deflection Measurements

ASTM International

Publication Date:
Dec 1, 2003

Scope:

This guide provides procedural information 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 guide 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.

This Guide 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 concrete.

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

This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords:

Benkelman beam

deflection sensor

deflection surveys

falling-weight deflectometer (FWD)

impulse deflection testing device

load cell

load/deflection testing

nondestructive testing (NDT)

pavement surface deflection

pavement testing

sampling frequency

static deflection testing device

steady-state dynamic deflection testing device

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