|Table of Contents|

Rheological properties evaluation of silane-modified polyacrylate clear asphalt(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2026年2期
Page:
1-14
Research Field:
道路工程
Publishing date:

Info

Title:
Rheological properties evaluation of silane-modified polyacrylate clear asphalt
Author(s):
MA Feng1;  TANG Tang1;  SHI Ke1*;  WANG Yu-xing1;  LIU Jin-liang2; FU Zhen3;  WANG Meng-meng1
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. China Xiongan Group Infrastructure Co., Ltd., Baoding 071700, Hebei, China; 3. School of Materials Science and Engineering, Chang'an University, Xi'an 710064, Shaanxi, China)
Keywords:
road engineering;  silane-modified polyacrylate clear asphalt;  Burgers model;  high and low temperature properties;  temperature sensitivity;  creep and recovery
PACS:
U414
DOI:
10.19721/j.cnki.1671-8879.2026.02.001
Abstract:
To mitigate the urban heat island effect and address the issue of inadequate high temperature stability in clear asphalt pavement, silane-modified polyacrylate(SMP)was used to modify clear asphalt(CA), and its rheological properties were investigated. SMP modified clear asphalt(SMPA)with different SMP mass fractions(1%, 2%, 3%, 4%, and 5%)was prepared, and base asphalt(BA)and SBS-modified asphalt(SBSA)were used as controls, and the high temperature rheological properties of SMPA were evaluated by frequency sweep tests, temperature sweep tests and multiple stress creep recovery tests. At the same time, the bending beam rheometer was used to characterize the creep stiffness and creep rate of SMPA, and its low temperature viscoelastic parameters were analyzed by Burgers model. The results indicate that the addition of SMP significantly improves the complex modulus of CA, so that it exhibits excellent anti-deformation and anti-rutting ability under high temperature and low frequency conditions, and the high temperature performance enhancement effect is more obvious with the increase of SMP content. Rutting factor and fatigue factor show that SMPA has good high temperature stability and good fatigue resistance, and its temperature sensitivity improvement has a saturation trend. The increase in SMP content significantly improves the creep recovery properties of CA and continuously reduces its non-recoverable creep compliance. Compared with CA, the creep recovery rate of SMPA with 3% content increases by4.8%, and the unrecoverable creep compliance gradually decreases by 22.1%, which improves the high temperature deformation resistance and recovery deformation ability of CA. The incorporation of SMP has little effect on the creep stiffness and creep rate of CA. Compared with CA, the creep stiffness of SMPA with 3% content increases by 3.1%, and the creep rate reduces by 1.3%, which has a controllable effect on the low temperature crack resistance of CA. According to the evaluation of high and low temperature performances, SMPA has excellent high temperature performance, but its low temperature performance decreases slightly. By balancing the rutting resistance and crack resistance, the optimum SMP dosage is determined to be 3%. The research results provide a theoretical basis for the performance optimization and engineering application of clear asphalt. 6 tabs, 12 figs, 38 refs.

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Last Update: 2026-04-20