Influence of soiling phenomena on air-void microstructure and acoustic performance of porous asphalt pavement

被引：34
作者：
Alber, Stefan [1 ]
Ressel, Wolfram [1 ]
Liu, Pengfei [2 ]
Wang, Dawei [2 ,3 ]
Oeser, Markus [2 ]
机构：
[1] Univ Stuttgart, Inst Rd & Transport Sci, Pfaffenwaldring 7, D-70569 Stuttgart, Germany
[2] Rhein Westfal TH Aachen, Inst Highway Engn, Mies van der Rohe Str 1, D-52074 Aachen, Germany
[3] Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Heilongjiang, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 158卷
关键词：
Porous asphalt; Soiling mechanisms; Clogging; Artificial soiling tests; Image analysis; Acoustical behaviour; Sound absorption; Absorber model; Tortuosity; Structure factor; FREQUENCY RANGE; ELASTIC WAVES; CONCRETE; PROPAGATION; MIXTURES;
D O I：
10.1016/j.conbuildmat.2017.10.069
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Acoustical properties of porous asphalt and relationships with the structure of voids are analyzed. A special focus is put on the change of porous asphalt properties due to soiling, which is widely known as an essential problem of acoustical lifetime. Soiling mechanisms which are analyzed in artificially soiled samples with imaging techniques (thin sections and scanning electron microscopy) and their relevance to acoustical parameters are shown. Flow resistivities and sound absorption behaviour (frequencies and degree of sound absorption) are measured, structure factors and tortuosities are back-calculated with absorber models and compared according to mix design and changes due to soiling phenomena. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：938 / 948
页数：11
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