A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Study of Shearing Resistance in Asphaltic Concrete
A study was made to evaluate the basic strength components of asphaltic concrete mixtures - shearing resistance, cohesion, frictional resistance and interlocking of particles. Direct compression tests at two strain rates, triaxial tests, and tension tests were performed on laboratory molded specimens approximately 5 in. in diam. by 10 in. in height. Both crushed and rounded aggregates were used and the amount of 85-100 grade asphalt was varied from 3.5 to 5.25 percent. The author found that the unconfined compression test can reveal some material properties but should not be used alone for evaluating the basic strength components of mixtures. The results of the triaxial test produced a curved Mohr envelope which the author attributed to loss of particle interlock. Reportedly, the cohesive strength obtained from Mohr envelopes was verified by the results of the tension tests although there was a wide variation in the results. The strain associated with failure in tension was found to be less than that found in compression testing. The report does not state any findings with respect to effects of materials variables or rate of strain. (BPR abstract)
A Study of Shearing Resistance in Asphaltic Concrete
A study was made to evaluate the basic strength components of asphaltic concrete mixtures - shearing resistance, cohesion, frictional resistance and interlocking of particles. Direct compression tests at two strain rates, triaxial tests, and tension tests were performed on laboratory molded specimens approximately 5 in. in diam. by 10 in. in height. Both crushed and rounded aggregates were used and the amount of 85-100 grade asphalt was varied from 3.5 to 5.25 percent. The author found that the unconfined compression test can reveal some material properties but should not be used alone for evaluating the basic strength components of mixtures. The results of the triaxial test produced a curved Mohr envelope which the author attributed to loss of particle interlock. Reportedly, the cohesive strength obtained from Mohr envelopes was verified by the results of the tension tests although there was a wide variation in the results. The strain associated with failure in tension was found to be less than that found in compression testing. The report does not state any findings with respect to effects of materials variables or rate of strain. (BPR abstract)
A Study of Shearing Resistance in Asphaltic Concrete
E. R. Hargett (author)
1965
57 pages
Report
No indication
English
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