Properties of Composite Modified Asphalt with HDPE/SBS/Waste Tire Powder Mixed
[1]He Rui,Huang Xin,Geng Jiuguang,et al.Properties of Composite Modified Asphalt with HDPE/SBS/Waste Tire Powder Mixed[J].Journal of Zhengzhou University (Engineering Science),2018,39(02):67-72.[doi:10.13705/j.issn.1671-6833.2018.02.006]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
39
Number of periods:
2018 02
Page number:
67-72
Column:
Public date:
2018-03-30
- Title:
- Properties of Composite Modified Asphalt with HDPE/SBS/Waste Tire Powder Mixed
- Keywords:
- composite modified asphalt; orthogonal test; variance analysis; SBS waste tire powder; HDPE
- CLC:
- -
- Abstract:
- To study the optimum preparation process of HDPE/SBS/waste tire powder mixed with three kinds of modified asphalt, SK-90 # asphalt was used to select SBS content, powder content, HDPE content and Shear rate, shear time and shear temperature to prepare compound modified asphalt. The results were analyzed by variance analysis method. The influence of each test variable on the performance of composite modified asphalt was obtained, and the optimal preparation scheme was obtained. The results showed that the SBS content had the greatest effect on the softening point and the elastic recovery rate. The content of HDPE had a great effect on the penetration. The SBS and HDPE content had an influence on the ductility. The content of the modifier and the shear temperature the effect of rotational viscosity was essentially the same. The optimum preparation scheme was as follows: the content of HDPE was 1.5%, the content of SBS was 5%, the content of waste tire was 20%, the shear temperature was 165 ℃, the shear rate was 4500r / min, the shear time was 45min. Under the optimal preparation scheme, the high temperature stability and low temperature crack resistance of the modified asphalt were greatly improved, and the viscosity of the modified asphalt was increased and the adhesion to the aggregate was enhanced, which improved the anti-rutting ability and the ability of resisting the water resistance. The elastic recovery rate could ensure the crack resistance of modified asphalt.
- References:
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Last Update:
2018-04-02