Mechanical Performance of Porous Asphalt Concrete Incorporating Bottom Ash as Fine Aggregate

被引:8
作者
Suddeepong, Apichat [1 ,2 ]
Buritatum, Apinun [2 ]
Dasdawan, Sutep [2 ]
Horpibulsuk, Suksun [2 ,3 ]
Yaowarat, Teerasak [2 ]
Hoy, Menglim [3 ]
Arulrajah, Arul [4 ]
机构
[1] Suranaree Univ Technol, Sch Civil & Infrastruct Engn, Nakhon Ratchasima 30000, Thailand
[2] Suranaree Univ Technol, Ctr Excellence Innovat Sustainable Infrastruct Dev, 111 Univ Ave, Nakhon Ratchasima 30000, Thailand
[3] Suranaree Univ Technol, Sch Civil Engn, 111 Univ Ave, Nakhon Ratchasima 30000, Thailand
[4] Swinburne Univ Technol, Dept Civil & Construct Engn, Hawthorn, Vic 3122, Australia
基金
澳大利亚研究理事会;
关键词
Pavement engineering; Bottom ash (BA); Asphalt concrete; Recycled waste; Mechanical properties; Cyclic properties; MIXTURES; COAL; FLY; STRENGTH; WASTE; WORKABILITY; DESIGN; CEMENT;
D O I
10.1061/JMCEE7.MTENG-15233
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Porous asphalt concrete (PAC) is an open-graded asphalt concrete with a high air void, which functions as permeable pavement with high surface frictional resistance. PAC typically requires a high amount of coarse aggregate to provide the required porous structure. An expensive high-quality polymer-modified asphalt (PMA) is commonly required to prevent draindown issues and to improve the performance of PAC. Bottom ash (BA), a high-porosity byproduct from coal-fired power plants, is used as a greener product to improve the quality of traditional asphalt cement penetration grade 60/70 (AC 60/70) for producing low-cost PAC in this research. The effect of the BA replacement ratio (0%, 10%, 15%, 20%, and 25% by total weight of fine aggregate) on the draindown, loss of particle, Marshall properties, indirect tensile strength (ITS), indirect tensile resilient modulus (IT Mr), indirect tensile fatigue life (ITFL), permanent deformation (PD), rut depth, and skid resistance of BA-AC60/70-PAC were measured and compared with PMA-PAC. The draindown and particle loss values of BA-AC60/70-PAC were found to decrease with an increase in the BA replacement ratio. The BA replacement improved the Marshall properties, strength index, ITS, IT Mr, ITFL, PD, rut depth, and skid resistance of PAC up to the highest value at the optimum BA replacement ratio of 20%. The improved ITS is associated with the improved IT Mr in a linear relationship for all BA replacement ratios. The change in ITFL was found to be linearly related to IT Mr at a specific stress level. At the same design criteria, the 20% BA replacement ratio yields the reduction of total construction cost of BA-AC60/70-PAC surface course by 33% benchmarked to the conventional PMA-PAC surface course.
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页数:15
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