SBS改性沥青低温流变性与原材料性能相关性研究

doi:10.11896/j.issn.1005-023X.2018.22.009

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Abstract The low temperature rheological properties of SBS modified asphalt strongly depends on raw materials. This paper describes the correlation of the stiffness modulus (S) and creep rate (m) of SBS-modified asphalt with raw materials’ performance parameters. Orthogonal experiment of L₂₅(5³) was designed using five types of bitumen, five kinds of SBS modifier and five different levels of modifier adding amount, and the samples were tested using bending beam rheological (BBR) to obtain the -18 ℃ stiffness and m value. Range analysis was used to evaluate the influence level of different raw material, gray relational grade was used to analyze the correlation between raw material performance parameters and low temperature rheological properties of SBS-modified asphalt. According to the results obtained from the experimental program, bitumen has the most significant influence on SBS modified asphalt stiffness and m value, followed by the modifier, and the effect of SBS modifier adding amount was inconspicuous. The calculation indicated that bitumen performance parameters,-18 ℃ stiffness modulus, m value, and the composition such as the total content of colloid and aromatic, SBS performance parameters such as tensile stress, tensile strength, elongation have obvious correlations with the low temperature rheological properties of SBS-modified asphalt.

Key words： styrene-butadiene-styrene block copolymer (SBS) modified asphalt bending beam rheological (BBR) test four constituents of asphalt performance parameters of modifier gray relational grade analysis

Published: 21 December 2018

CLC number:

U414

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	Articles by authors
	MA Xiaoyan
	CHEN Huaxin
	ZHANG Xingyu
	XING Mingliang
	YANG Pingwen
	WANG Zhaoli

Cite this article:

MA Xiaoyan,CHEN Huaxin,ZHANG Xingyu, et al. An Analysis over the Correlation Between Low Temperature Rheological Properties of SBS-modified Asphalt and Raw Materials’ Performance Parameters[J]. Materials Reports, 2018, 32(22): 3885-3890.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.22.009 OR http://www.mater-rep.com/EN/Y2018/V32/I22/3885

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