1. Scope

1.1 This specification covers backer material for cold- and hot-applied joint sealant for use in portland-cement concrete or asphalt-pavement joints.

1.2 This specification establishes basic requirements for sealant-backer material either in rod or strip form, that can withstand the temperature of hot- or cold-applied sealants without excessive deformation.

1.3 Sealant backer material serves one or more of the following purposes:

1.3.1 Limits the amount and depth of sealant applied to a joint,

1.3.2 Acts as a barrier interface to prevent backside adhesion (bondbreaker), and

1.3.3 Provides a form to assist the sealant in developing a shape factor.

1.4 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information purposes only.

The following safety hazards caveat pertains only to the test methods described in this specification. 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials

C1016 Test Method for Determination of Water Absorption of Sealant Backing (Joint Filler) Material

C1253 Test Method for Determining the Outgassing Potential of Sealant Backing

D545 Test Methods for Preformed Expansion Joint Fillers for Concrete Construction (Nonextruding and Resilient Types)

D1622 Test Method for Apparent Density of Rigid Cellular Plastics

D1623 Test Method for Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics

D5535 Terminology Relating to Formed-in-Place Sealants for Joints and Cracks in Pavements

E1 Specification for ASTM Liquid-in-Glass Thermometers

E220 Test Method for Calibration of Thermocouples By Comparison Techniques

Keywords

Asphalts; Backer material; Concrete-portland cement concrete (PCC); Joint sealants; Joint sealants (concrete); Portland cement concrete (PCC); Sealant backer material; backer material (rod/strip form)-cold-/hot-applied joint sealants in; portland-cement concrete/asphalt joints, spec.,; Cold-applied elastomeric joint sealants; backer material (rod/strip form);emcold-/hot-applied joint sealants in; portland-cement concrete/asphalt joints, spec;

ICS Code

ICS Number Code 91.100.50 (Binders. Sealing materials)

DOI: 10.1520/D5249-95R06

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