Design method and performance for large stone porous asphalt mixtures

Yongli Zhao; Xiaoming Huang

doi:10.1007/s11595-010-0111-2

Journal of Wuhan University of Technology Materials Science Edition ›› 2010, Vol. 25 ›› Issue (5) : 871 -876. DOI: 10.1007/s11595-010-0111-2

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Design method and performance for large stone porous asphalt mixtures

Yongli Zhao ¹
, Xiaoming Huang ¹^,^{^b}

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Abstract

Design method for large stone porous asphalt mixtures (LSPM) was analyzed to avoid the early distresses of semi-rigid asphalt pavements. Based on stone-to-stone skeleton structure concept, processes of LSPM gradation design was given. The gradation composite design for LSPM shows that the LSPM nominal maximum size (NMS) should be larger than 26.5 mm, and the NMS sieve passing percentage should be greater than 50%. Through experiments and calculations on the volume properties of the aggregate, the range of aggregate gradation curve of LSPM was given. In terms of asphalt binder’s normalized test results, MAC-70 and SBS modified asphalt were selected as the asphalt binders. The applicability of large scale Marshall Method and gyratory compaction method to shape specimens was investigated. Based on the asphalt mixture performance evaluation, the optimum asphalt content range (3.1%–3.6%), the bitumen film’s thickness range (13–16 μm) and the air void range (135–18%) were recommended. Finally, LSPM was tested by the laboratory performance tests including rutting resistance test, fatigue test and water stability test. The theoretic and practical analysis shows that LSPM has a good performance on water permeability, rutting resistance and reflection crack resistance.

Keywords

large stone porous asphalt mixtures (LSPM) / mixture design / performance / aggregate gradation / optimum asphalt content

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Yongli Zhao, Xiaoming Huang. Design method and performance for large stone porous asphalt mixtures. Journal of Wuhan University of Technology Materials Science Edition, 2010, 25(5): 871-876 DOI:10.1007/s11595-010-0111-2

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References

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[2]	Asphalt Institute. Asphalt Overlays for Highway and Street Rehabilitation[M], 1983 KY Asphalt Institute

[3]	Prithvi S Kandal. Large Stone Asphalt Mixes: Design and Construction[C]. Annual Meeting of the Association of Asphalt Paving Technologists, Albuquerque, 1990