Epoxy asphalt concrete (EAC) is a widely used steel bridge deck pavement (SBDP) material. Due to the curing reaction, the EAC-based material needs a long curing period before opening to traffic, which in an inconvenience in the construction of SBDP. This study developed a cold mix high-early-strength (CHES) epoxy asphalt through the design of a compatilizer and curing agent system. The optimum formula of CHES epoxy asphalt was determined through a series of laboratory tests. By comparison of the performances of CHES EAC and some conventional EACs for SBDP, it was found that the developed CHES epoxy asphalt can significantly reduce the curing period, and the pavement performance of CHES EAC is, overall, excellent for application in SBDP. In addition, the sufficient allowable construction duration shows that the CHES EAC has a good construction workability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399601 | PMC |
| http://dx.doi.org/10.3390/ma14164555 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rheological Properties and Modification Mechanism of Emulsified Asphalt Modified with Waterborne Epoxy/Polyurethan Composite.
Materials (Basel)
November 2024
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China.
In research aimed at improving the brittleness of WER (waterborne epoxy)-modified emulsified asphalt, commonly encountered issues are that the low-temperature performance of this type of asphalt becomes insufficient and the long curing time leads to low early strength. Matrix-emulsified asphalt was modified with WPU (waterborne polyurethane), WER, and DMP-30 (accelerator). Firstly, the performance changes of modified emulsified asphalt at different single-factor dosages were explored through conventional performance tests and assessments of its adhesion, tensile properties, and curing time.
View Article and Find Full Text PDFFabrication of High-Performance Asphalt Mixture Using Waterborne Epoxy-Acrylate Resin Modified Emulsified Asphalt (WEREA).
Polymers (Basel)
September 2024
School of Civil Engineering, Central South University, 22 South Shaoshan Rd., Changsha 410075, China.
Existing research shows that using waterborne epoxy resin (WER) instead of emulsified asphalt as the binder for cold mix asphalt (CMA) can enhance the rutting resistance, high-temperature performance, fracture performance, and early performance of CMA. In order to eliminate the potential drawbacks such as insufficient strength and low-temperature performance of CMA during application, a novel method was proposed in this study for the preparation of waterborne epoxy-acrylate resin (WER), specifically tailored to modify emulsified asphalt, resulting in waterborne epoxy-acrylate resin emulsified asphalt (WEREA). The modification effect of WER on emulsified asphalt was evaluated through rheological tests and direct tensile tests.
View Article and Find Full Text PDFRehabilitation and reinforcement of cracked pavements using crack sealers and composite patches.
Heliyon
October 2024
Welding and Joining Research Center, School of Industrial Engineering, Iran University of Science and Technology (IUST), Narmak, 16846-13114, Tehran, Iran.
Cracking is a significant concern for pavements and should be appropriately treated during road, highway, and runway rehabilitation. This study investigates the behavior of asphaltic materials under tensile and shear loading modes in intact, fractured, and repaired conditions. With this aim, several methods and materials are utilized for repairs, such as poring adhesive into the crack (using bitumen, neat epoxy resin, and polymer concrete adhesives) and patching the crack with textile (by glass fiber and epoxy resin or bitumen).
View Article and Find Full Text PDFStudy on the Performance of Epoxy-Modified Asphalt and Steel Slag Ultra-Thin Friction Course.
Materials (Basel)
September 2024
School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China.
Article Synopsis
- Ultra-thin overlays (UTOL) are used on highways to enhance the performance and repair minor damage to asphalt pavements, but their thinness makes them prone to wear and shorter lifespan.
- This study explores the creation of a more durable and skid-resistant asphalt ultra-thin overlay by combining epoxy asphalt (EA) with steel slag, analyzing EA's physical and rheological properties.
- Results suggest that using 40% epoxy resin optimizes the overlay's performance, improving its resistance to temperatures, skid stability, and overall durability when mixed and maintained at specified temperatures.
The effect of anionic emulsifiers' diversity and manufacturing processes on the stability and mechanical properties of the water-based epoxy-emulsified asphalt.
Sci Rep
September 2024
Chongqing Chengtou Infrastructure Construction Co., Ltd, Chongqing, 400010, China.
Emulsified asphalt mixtures' cold mix and paving features facilitate asphalt pavements in fulfilling dual-carbon and energy-saving demands. Anionic emulsifiers can enhance emulsion stability, ensure uniform dispersion of oil and water, possess good decompression viscosity, thickening, and lubricating properties, and maintain good stability under acidic conditions. Nevertheless, anionic emulsified asphalt is restricted in engineering applications due to problems like its storage stability.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!