【国外标准】 Standard Specification for Asphalt Emulsion Pavement Sealer (Mineral Colloid or Chemically Stabilized Type)

This specification establishes the material and manufacturing requirements for water-based asphalt emulsion (mineral colloid or chemically stabilized type) pavement sealers suitable for use as a weather-protective coating over bituminous pavements, such as roadways, driveways, and parking areas. The base asphalt emulsion shall be made using binders prepared from crude petroleum; the mineral filler (when used), shall consist of finely ground clay, silica, limestone, slate, basalt, slag, or other inert inorganic filler materials; and the aggregate shall be either a natural or manufactured angular aggregate composed of clean, hard, durable particles free of clay or other objectionable material. The aggregate to be used shall follow the manufacturer's recommendations; however, 100% of the aggregate shall pass a 2.38 mm [No. 8] mesh-sieve at all times. Aggregate may either be added at the point of manufacture, post-added at the job site, or both. The use of an additive is optional and shall be approved by the asphalt emulsion pavement sealer manufacturer.This specification also covers the physical requirements, sampling, inspection, and packaging and package marking for asphalt emulsion pavement sealers (mineral colloid or chemically stabilized type).1.1 This specification covers water-based asphalt emulsion (mineral colloid or chemically stabilized type) pavement sealer suitable for use as a weather-protective coating over bituminous pavements, such as roadways, parking areas, and driveways.NOTE 1: Application shall be made in accordance with a forthcoming ASTM standard on the application of asphalt emulsion pavement sealer.1.2 The values stated in SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.