Influence of Construction Process on Aggregate Spalling Behavior on Ultrathin Waterborne Epoxy Resin Layer

Coatings, vol. 14, pp. 1468

Abstract

The waterborne epoxy resin (WER) colored antiskid thin layer has been widely used in asphalt pavement to improve driving safety. The tectonic depth determines the antiskid performance of aparticle antiskid type thin layer. The spalling of aggregate from a thin layer may reduce the tectonic depth, thus damaging antiskid performance. The spreading process of aggregate on the WER binder surface plays an important role in the spalling behavior of the thin layer. Herein, the influence of spreading processes on the ceramic aggregate spalling behavior on the WER thin layer was investigated based on laboratory experiments. The abrasion and British Pendulum Number (BPN) tests were employed to evaluate the antispalling and antiskid properties of the WER thin layers with different amounts of WER mortar, coverage rates of first-spread aggregate, and spreading orders of coarse/fine aggregates. Moreover, the tectonic depths of the layers before/after the spalling test were also investigated. The results indicated that the optimal dosage of WER mortar is 2.8 kg/m2. The WER thin layer exhibited better anti-striping property when coarse ceramic aggregate was spread first. The first-spread coverage rate of the aggregate on the WER surface is 70%. The thin layer exhibited a superior antispalling performance according to the resulting scheme, with a spalling rate of 3.77%. The tectonic depth only decreased from 1.87 to 1.80 mm after the spalling test.

Authors 9

1. Jiaquan Yuan
   Affiliation as printed

   Dali Danan Highway Co., Ltd., Dali 671000, China

2. Yifan Zhang

   Chongqing Jiaotong University

   Affiliation as printed

   School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

3. Haoyang Huang

   Chongqing Jiaotong University

   Affiliation as printed

   School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

4. Gang Zhou corresponding

   Chongqing Jiaotong University

   Affiliation as printed

   School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

5. Chaoliang Fu corresponding Aachen Institute of Highway Engineering

   RWTH Aachen University

   Affiliation as printed

   Institute of Highway Engineering, RWTH Aachen University, 52074 Aachen, North Rhine-Westphalia, Germany

   Institute of Highway Engineering, RWTH Aachen University, Aachen, 52074 North Rhine-Westphalia, Germany

6. Weihong Jiang
   Affiliation as printed

   Dali Danan Highway Co., Ltd., Dali 671000, China

7. Li Xiong
   Affiliation as printed

   Dali Danan Highway Co., Ltd., Dali 671000, China

8. Xiaohua Yang
   Affiliation as printed

   Dali Danan Highway Co., Ltd., Dali 671000, China

9. Chuanqiang Li corresponding

   Chongqing Jiaotong University

   Affiliation as printed

   School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

   School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China