923 PERFORMANCE CHARACTERISTICS OF THERMOSETTING POLYURETHANE MODIFIED ASPHALT BINDER AND ITS MIXTURES

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materiali in tehnologije Pub Date : 2023-12-11 DOI:10.17222/mit.2023.923

Qian Zhou, Fan Yang, Liming Yang, Shiguang Tang

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Abstract

A new thermosetting polyurethane modified asphalt (TPUA) pavement material was developed to solve the unbalanced performance of traditional bridge deck pavement materials. Compared with the conventional bridge deck pavement materials, this work comprehensively evaluates the pavement performance of the TPUA binder and its mixture. The results indicate that the TPUA binder gradually shows elastic material properties at high temperatures and has excellent deformation resistance. The low-temperature flexibility of the TPUA binder is much better than that of SBS asphalt and epoxy asphalt (EA) binders. The TPUA binder is a viscoelastic material at low temperatures, and its creep meets the Burgers constitutive model. Moreover, the TPUA binder also has excellent mechanical properties and flexibility. In addition, the TPUA mixture has excellent mechanical properties, high-temperature deformation resistance and moisture stability. Its crack resistance at room temperature and low temperature is much better than those of SBS asphalt and EA mixture. This work will help us continue the development and performance research of TPUA pavement materials.

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923 热固性聚氨酯改性沥青粘结剂及其混合物的性能特征

为了解决传统桥面铺装材料性能不均衡的问题，一种新型热固性聚氨酯改性沥青（TPUA）铺装材料应运而生。与传统桥面铺装材料相比，本研究全面评估了 TPUA 粘结料及其混合料的铺装性能。结果表明，TPUA 粘结剂在高温下逐渐显示出弹性材料特性，并具有优异的抗变形能力。TPUA 粘结剂的低温柔韧性远远优于 SBS 沥青和环氧沥青（EA）粘结剂。TPUA 粘合剂在低温下是一种粘弹性材料，其蠕变符合伯格斯构成模型。此外，TPUA 粘结剂还具有优异的机械性能和柔韧性。此外，TPUA 混合物还具有优异的机械性能、耐高温变形性和湿稳定性。其在室温和低温下的抗裂性也远远优于 SBS 沥青和 EA 混合料。这项工作将有助于我们继续开展 TPUA 路面材料的开发和性能研究。

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.