ASTM-D4695 2008

ASTM D4695

Scope

1.1 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.

1.2 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.

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.

1.4 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; Benkelman beam; Calibration–pavement testing analysis instrumentation; Deflection–pavement surfaces/applications; Falling weight deflectometer (FWD); Heavy weight deflectometer (HWD); Impulse deflection testing device; Loading tests–pavement surfaces; Nondestructive evaluation (NDE); Pavement deflection; Pavement surfaces; Sensors; Static tests–pavement surfaces; Steady-state dynamic deflection testing device; Temperature tests

ICS Code

ICS Number Code n/a

DOI: 10.1520/D4695-03R08