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Asphalt Mixture Proportion Design Method of Coarse Graded High-Modulus Asphalt Concrete with Skeleton-Embedded Structure
In view of heavy traffic situation of asphalt pavement and the project needs in China, a kind of mixed design method of coarse graded high-modulus asphalt concrete (HMAC25) with skeleton-embedded structure was proposed. A kind of low-labeled hard asphalt with penetration degree of 30 (0.1 mm) (AH -30) was used as the cementing material of high-modulus asphalt concrete, and the nominal maximum aggregate size is no smaller than 26.5 mm. The asphalt–aggregate ratio of the asphalt mixture was determined by using the design method of asphalt mixture based on aggregate closest compact condition. The result of laboratory test indicates that (1) compared with the required value in the related specification, the high temperature stability of high-modulus asphalt concrete made with the proposed method improved by more than 7 times; (2) compared with the maximum value recommended in the related specification, the compression resilient modulus at 20°C increased by nearly 30%; (3) the low temperature anticracking performance and moisture stability can also meet the requirements of the specification.
Asphalt Mixture Proportion Design Method of Coarse Graded High-Modulus Asphalt Concrete with Skeleton-Embedded Structure
In view of heavy traffic situation of asphalt pavement and the project needs in China, a kind of mixed design method of coarse graded high-modulus asphalt concrete (HMAC25) with skeleton-embedded structure was proposed. A kind of low-labeled hard asphalt with penetration degree of 30 (0.1 mm) (AH -30) was used as the cementing material of high-modulus asphalt concrete, and the nominal maximum aggregate size is no smaller than 26.5 mm. The asphalt–aggregate ratio of the asphalt mixture was determined by using the design method of asphalt mixture based on aggregate closest compact condition. The result of laboratory test indicates that (1) compared with the required value in the related specification, the high temperature stability of high-modulus asphalt concrete made with the proposed method improved by more than 7 times; (2) compared with the maximum value recommended in the related specification, the compression resilient modulus at 20°C increased by nearly 30%; (3) the low temperature anticracking performance and moisture stability can also meet the requirements of the specification.
Asphalt Mixture Proportion Design Method of Coarse Graded High-Modulus Asphalt Concrete with Skeleton-Embedded Structure
Xiao, Qian (author) / Jin, Hai-bing (author) / Liu, Hai-yan (author) / Xiao, Qing (author)
2020-12-01
62020-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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