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Experimental Performance Characteristics of Crumb Rubber-Modified(CRM) Asphalt Concrete  

Kim, Nak-Seok (경기대학교 토목환경공학부)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.3, no.2, 2003 , pp. 89-97 More about this Journal
Abstract
Indirect tensile strength(IDT) test and resilient modulus(Mr) test were performed to evaluate experimental performance characteristics for the conventional and crumb rubber-modified(CRM) asphalt concrete using dry and wet processes asphalt. The IDT test was conducted under three temperatures(5, 10, 20$^{\circ}C$). According to the test results, it was shown that indirect tensile strength of CRM asphalt concrete was lower than that of the conventional one. However, toughness and maximum vortical strain of the CRM asphalt concrete were higher than those of the conventional one. The results of Mr test were presented that Mr of CRM asphalt concrete was higher than that of the conventional one. In addition, it was revealed that the overall laboratory performance characteristics of the wet-processed CRM asphalt concrete was better than those of the dry-processed one.
Keywords
CRM; asphalt concrete; dry and wet processes; toughness; indirect tensile strength; resilient modulus; performance characteristic;
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