Abstract In this paper, aggregate suspension (AC-20I), SUP-19, stone-to-stone contact and interstitial structure (AM-20) and stone-to-stone contact and close-grained structure (SMA-20) were used for samples; contrast research about shear strength of asphalt mixture for four typical types was done through test. Large-size direct shear apparatus for coarse aggregates was used; shear strength affected by aggregates of sphere-shaped and ellipsoid-shaped was discussed. As a result, for aggregate gradation, SMA-20 yielded significantly higher shear strength when compared with the other types; there was no great difference on the shear strength of AM-20 and SUP-19; but AC-20I yielded lowest shear strength. For aggregate shape, aggregate shape was most sensitive for SMA-20 and SUP-19. Shear strength for stone-to-stone contact and close-grained structure was undertaken by coarse aggregate. Mixtures filled by fine aggregate redundantly could develop lower shear strength than unfilled.
Research on Test of Shear Strength of Aggregates Based on Gradation and Particle Shape
International Symposium for Intelligent Transportation and Smart City (ITASC) 2019 Proceedings ; 206-213
01.01.2019
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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