Research Status and Evaluation of Toughened Epoxy Cold-Mix Asphalt Mixtures

DOI

10.2991/978-94-6463-932-2_24How to use a DOI?

Keywords

Cold patch asphalt mixture; Epoxy resin modification; Toughening technology; Development direction

Abstract

Current research on cold patch asphalt mixtures primarily focuses on the development of cold-patch asphalt modifiers, such as SBS, SBR, and polyurethane-modified asphalt cold patch materials. Epoxy resin, a thermosetting polymer with excellent adhesion, corrosion resistance, and high strength, is widely used as a modifier to prepare epoxy asphalt cold patch materials. The reaction between epoxy resin and curing agents forms a three-dimensional network structure, which reduces the temperature sensitivity of asphalt and enhances its bond strength, tensile strength, and high-temperature stability. However, the polarity difference between epoxy resin and asphalt leads to poor compatibility, which often results in segregation during material preparation. Consequently, existing studies predominantly focus on waterborne epoxy resin/emulsified asphalt systems, while research on oil-based epoxy resin/diluted asphalt systems remains limited. Additionally, the brittleness of epoxy resin curing products, combined with the inherent cold brittleness of asphalt, leads to stress concentration and brittle fracture under low-temperature conditions and vehicle loads, limiting the engineering application of epoxy asphalt cold patch materials. This study aims to address the issues of poor compatibility and inadequate low-temperature stability in epoxy asphalt cold patch materials. Based on the oil-based epoxy resin/diluted asphalt system, we propose to develop two types of toughened epoxy asphalt cold patch materials with high strength and excellent low-temperature performance. The research outcomes are expected to reduce the cost of pothole maintenance, improve the durability of asphalt pavements, promote the application of epoxy resin in cold patch materials, and provide a scientific basis for the development and engineering application of epoxy asphalt cold patch materials.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Wenwei Liu
AU  - Fuzhou Shi
AU  - Zhiyuan Lü
AU  - Jian Lei
AU  - Wei Ren
PY  - 2025
DA  - 2025/12/22
TI  - Research Status and Evaluation of Toughened Epoxy Cold-Mix Asphalt Mixtures
BT  - Proceedings of the 2025 2nd International Conference on Civil Engineering Structures and Concrete Materials (CESCM 2025)
PB  - Atlantis Press
SP  - 232
EP  - 241
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-932-2_24
DO  - 10.2991/978-94-6463-932-2_24
ID  - Liu2025
ER  -