Journal Published Online: 10 March 2025
Volume 53, Issue 3

Enhancing Water Damage Resistance of Cold-Patching Asphalt Mixture via SEBS-Cement Composite Modification: Experimental Investigation and Predictive Analysis

CODEN: JTEVAB

Abstract

The solvent-based cold-patching asphalt mixture (CPAM) has excellent storability but still faces the problem of insufficient water damage resistance. Therefore, styrene-ethylene-butadiene-styrene (SEBS) copolymer and cement were selected as modifiers for an in-depth study of the water stability of solvent-based CPAM, including single and composite modifications. The suitable component contents of the SEBS-modified and base CPAM were first determined using the Brookfield rotational viscosity, water boiling, and Marshall stability tests. Subsequently, based on attenuated fully refractive Fourier transform infrared spectroscopy and surface free energy theory, the effects of single and composite modifications on functional groups in asphalt mastic and adhesion properties at the asphalt mastic-aggregate interface were investigated to predict the optimal modifier content in CPAM. Furthermore, the water damage resistance of the modified CPAM was assessed by employing water stability tests. Results indicated that the diesel diluent content of single-modified CPAM with 7.5 % SEBS and the base CPAM was obtained at 40 % and 20 %, respectively. Moreover, no new functional groups were created between SEBS, cement, and the base asphalt. SEBS-cement composite-modified CPAM had better adhesion property at the mastic-aggregate interface, demonstrating the best composite modifiers with 50 % cement and 7.5 % SEBS content. Meanwhile, the predicted optimal modifier content was further proven by water stability tests. The correlation equations between the water stability and surface energy ratio for the modified CPAM were developed.

Author Information

Zheng, Yuanchi
Zhejiang Sci-Tech University, School of Civil Engineering and Architecture, Hangzhou, China
Zhang, Xiaoyuan
Zhejiang Sci-Tech University, School of Civil Engineering and Architecture, Hangzhou, China
Lai, Yunlin
Zhejiang Xinghong Construction Engineering Testing Co., Ltd., Hangzhou, China
Zhu, Xiaojun
Hangzhou Lushun Environmental Construction Co., Ltd., Hangzhou, China
Pages: 24
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20240381
ISSN: 0090-3973
DOI: 10.1520/JTE20240381