Effect of alternative content of diatomite on creep deformation property of asphalt sand

TAO Jinglin; CHENG Yongchun; YU Di; YANG Jinsheng; MA Jiansheng

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Effect of alternative content of diatomite on creep deformation property of asphalt sand

TAO Jinglin #,CHENG Yongchun *,YU Di,YANG Jinsheng,MA Jiansheng

College of Transportation, Jilin University

*Correspondence author

#Submitted by

Subject:

Funding: Specialized Research Fund for the Doctoral Program of Higher Education of China （No.No. 20130061110041）

Opened online: 8 May 2017

Accepted by: none

Citation: TAO Jinglin,CHENG Yongchun,YU Di.Effect of alternative content of diatomite on creep deformation property of asphalt sand[OL]. [ 8 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4731158

High temperature and anti-ageing properties of asphalt could be improved by the addition of diatomite as researched in previous papers. It is believed to be alternative superior mineral filler in the construction of asphalt pavement in comparison with ordinary limestone powder. In this paper, compression strength and anti-deformation properties of asphalt sands with different content of diatomite were investigated by uniaxial compression failure test and uniaxial compression creep test. Five groups of asphalt sands with different volume content (0:1, 0.25:0.75, 0.5:0.5, 0.75:0.25 and 1:0) of diatomite to limestone were selected. The compression strength and secant modulus were firstly increased with the increasing of diatomite's content and then decreased when it exceed 0.75 whilst the creep strain was firstly decreased and then increased with the increasing of that. The compression strength and anti-deformation properties of asphalt sands were improved by the replacement of diatomite.

Keywords:Pavement construction materials; Asphalt sand; Diatomite; Secant modulus; Creep strain

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