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使用聚合物集料处理评估热拌沥青中的水分损害潜力

Evaluation of Moisture Damage Potential in Hot Mix Asphalt Using Polymeric Aggregate Treatment.

作者信息

Raza Arsalan, Khan Imran, Tufail Rana Faisal, Frankovska Jana, Mushtaq Muhammad Umar, Salmi Abdellatif, Awad Youssef Ahmed, Javed Muhammad Faisal

机构信息

Department of Civil Engineering, Wah Engineering College, University of Wah, Wah Cantt 47040, Pakistan.

Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan.

出版信息

Materials (Basel). 2022 Aug 7;15(15):5437. doi: 10.3390/ma15155437.

DOI:10.3390/ma15155437
PMID:35955372
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9369628/
Abstract

To enhance the moisture damage performance of hot mix asphalt (HMA), treating the aggregate surface with a suitable additive was a more convenient approach. In this research, two types of aggregate modifiers were used to study the effect of moisture damage on HMA. Three different aggregate sources were selected based on their abundance of use in HMA. To study the impact of these aggregate modifiers on moisture susceptibility of HMA, the indirect tensile strength test and indirect tensile modulus test were used as the performance tests. Moisture conditioning of specimens was carried out to simulate the effect of moisture on HMA. The prepared samples' tensile strength ratio () and stiffness modulus () results indicated a decrease in the strength of the HMA after moisture conditioning. After treating the aggregate surface with additives, an improvement was seen in dry and wet strength and stiffness. Moreover, an increasing trend was observed for both additives. The correlation between TSR and strength loss reveals a strong correlation (R = 0.7219). Also, the two additives indicate increased wettability of asphalt binder over aggregate, thus improving the adhesion between aggregate and asphalt binder.

摘要

为提高热拌沥青（HMA）的抗水损害性能，用合适的添加剂处理集料表面是一种更便捷的方法。在本研究中，使用了两种类型的集料改性剂来研究水损害对HMA的影响。基于其在HMA中的大量使用，选择了三种不同的集料来源。为研究这些集料改性剂对HMA水敏感性的影响，采用间接拉伸强度试验和间接拉伸模量试验作为性能测试。对试件进行水分 conditioning 以模拟水分对HMA的影响。制备样品的抗拉强度比（）和刚度模量（）结果表明，水分 conditioning 后HMA的强度有所降低。用添加剂处理集料表面后，干、湿强度和刚度均有提高。此外，两种添加剂均呈现上升趋势。TSR与强度损失之间的相关性显示出很强的相关性（R = 0.7219）。而且，这两种添加剂表明沥青结合料对集料的润湿性增加，从而改善了集料与沥青结合料之间的粘附性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/70beb576b52a/materials-15-05437-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/5a61d822ef9a/materials-15-05437-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/056f3d010779/materials-15-05437-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/ac7fadc283ee/materials-15-05437-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/ec12a8cde6bd/materials-15-05437-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/5cbd1600898e/materials-15-05437-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/70beb576b52a/materials-15-05437-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/5a61d822ef9a/materials-15-05437-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/056f3d010779/materials-15-05437-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/ac7fadc283ee/materials-15-05437-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/ec12a8cde6bd/materials-15-05437-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/5cbd1600898e/materials-15-05437-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3dca/9369628/70beb576b52a/materials-15-05437-g006.jpg

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