AASHTO T321-07 沥青混合料四点小梁弯曲疲劳寿命试验.pdf

Standard Method of Test for Determining the Fatigue Life of Compacted Hot Mix Asphalt (HMA) Subjected to Repeated Flexural Bending AASHTO Designation: T 321-07 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001 Standard Method of Test for Determining the Fatigue Life of Compacted Hot Mix Asphalt (HMA) Subjected to Repeated Flexural Bending AASHTO Designation: T 321-07 1. SCOPE 1.1. This standard provides procedures for determining the fatigue life and fatigue energy of 380 mm long by 50 mm thick by 63 mm wide hot mix asphalt (HMA) beam specimens sawed from laboratory or field compacted HMA and subjected to repeated flexural bending until failure. 1.2. This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this procedure to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards : PP 3, Preparing Hot Mix Asphalt (HMA) Specimens by Means of the Rolling Wheel Compactor 1 T 2, Sampling of Aggregates T 40, Sampling Bituminous Materials T 168, Sampling Bituminous Paving Mixtures T 269, Percent Air Voids in Compacted Dense and Open Asphalt Mixtures 2.2. ASTM Standards : D 3202, Standard Practice for Preparation of Bituminous Mixture Beam Specimens by Means of the California Kneading Compactor D 3549, Standard Test Method for Thickness or Height