Effects of Diatomite–Limestone Powder Ratio on Mechanical and Anti-Deformation Properties of Sustainable Sand Asphalt Composite

Yongchun Cheng, Chunfeng Zhu, Jinglin Tao, Yubo Jiao, Di Yu and Bo Xiao
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Yongchun Cheng: Transportation, Jilin University, Changchun 130025, China
Chunfeng Zhu: Transportation, Jilin University, Changchun 130025, China
Jinglin Tao: Jiangxi Research Institute of Transportation, Nanchang 330200, China
Yubo Jiao: Transportation, Jilin University, Changchun 130025, China
Di Yu: Transportation, Jilin University, Changchun 130025, China
Bo Xiao: Jilin Communications Polytechnic, Changchun 130012, China

Sustainability, 2018, vol. 10, issue 3, 1-17

Abstract: Diatomite has gained more and more interest as a new resource, since it has potential as a favorable alternative to mineral filler in the construction of asphalt pavement compared with ordinary limestone powder. In this paper, the mechanical and anti-deformation properties of sand asphalt composites with various proportions of diatomite were investigated by a uniaxial compression failure test, a uniaxial compression repeated creep test, and a low-temperature splitting test in order to determine the optimal replacement content of ordinary limestone powder. Five groups of sand asphalts with various volume ratios of diatomite to limestone (0:1, 0.25:0.75, 0.5:0.5, 0.75:0.25, and 1:0) were determined by the simplex-lattice mixture design (SLD) method. The results reveal that the compression strength, anti-deformation properties, and low-temperature crack resistance of sand asphalts are improved through the use of diatomite. Furthermore, the optimal ratio (0.327:0.673) of limestone to diatomite is determined by the SLD method, according to secant modulus and creep strain results.

Keywords: sand asphalt; diatomite; uniaxial compression; repeated creep; low-temperature splitting; simplex lattice design (SLD) (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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