|Table of Contents|

Research and application progress of working properties of waterborne epoxy materials for road in China(PDF)

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

Issue:
2022年3期
Page:
26-40
Research Field:
道路工程(道路交通功能材料专刊)
Publishing date:

Info

Title:
Research and application progress of working properties of waterborne epoxy materials for road in China
Author(s):
CHEN Qian1 WANG Chao-hui1 ZHOU Lu2 FU Hao1 ZHANG Dan1 HUANG Shuai1
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Shaanxi Communications Holding Group Co., Ltd, Xi'an 710065, Shaanxi, China)
Keywords:
road engineering waterborne epoxy resin emulsified asphalt working property evaluation index division of grade
PACS:
U416.21
DOI:
10.19721/j.cnki.1671-8879.2022.03.003
Abstract:
Aimed at the problems of various types and different evaluation indexes of waterborne epoxy materials for road in China, in order to further clarify the key properties of waterborne epoxy materials for road and their reasonable index threshold, the relevant specifications of road/bridge bonding materials at home and abroad were summarized systematically. The threshold differences of evaluation indexes between waterborne epoxy resin for road and its modified emulsified asphalt were compared and evaluated. The research and application progress of waterborne epoxy materials for road in China was investigated. The working properties of waterborne epoxy resin for road and its modified emulsified asphalt were summarized and reviewed. On this basis, based on the survey results and mathematical statistics methods, some conclusions were defined. The key working property of waterborne epoxy resin for road mainly includes mechanical properties and curing time. And the key working property of waterborne epoxy emulsified asphalt mainly includes heat resistance, waterproof, low temperature flexibility, construction storage, bonding and curing time. The evaluation indexes and recommended values of each key working property of waterborne epoxy materials for road were proposed. The research directions of waterborne epoxy materials for road that need further attention in the future were expected. The research results provided a useful reference for the revision and improvement of relevant specifications of waterborne epoxy materials for road. The results show that the key property of waterborne epoxy resin for road mainly includes mechanical properties and curing time. The performance index requirements of tensile strength ≥8 MPa, elongation at break ≥10%, surface drying time ≤4 h and hard drying time ≤8 h. The key property of waterborne epoxy emulsified asphalt mainly includes heat resistance, waterproof, low temperature flexibility, construction storage, bonding and curing time. The specimen has no sliding, flowing and dripping at 160 ℃, impermeable within 60 min at 0.3 MPa and no crack at -25 ℃. The performance index requirements of viscosity within 30 to 50 s, surface drying time ≤4 h and hard drying time ≤8 h. The main index of bonding performance is interlayer pull-out strength, which can be divided into four grades: excellent [1.1, +∞), good [1.0, 1.1), general [0.5, 1.0)and poor [0, 0.5).4 tabs, 14 figs, 69 refs.

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Last Update: 2022-07-01