紫外和水老化对温热剂/聚合物改性沥青-骨料体系界面性能影响的多尺度研究

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-09-29 DOI:10.1016/j.conbuildmat.2025.143768

Riran Wang , Guangwei Zhang , Bei Chen , Xiaopeng Ma

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引用次数: 0

摘要

本研究提供了一个多尺度的研究紫外线（UV）和水老化对CR/SBS/Sasobit®改性沥青-骨料体系界面性能的影响。采用表面自由能（SFE）法、原子力显微镜（AFM）表征和拉脱方案，结合微观、纳米和宏观尺度的评价指标。本研究采用实验室室内紫外线照射和水浸试验，模拟沥青路面在自然使用条件下的紫外线照射和水老化效应。聚合物/Sasobit®改性沥青粘结剂-骨料界面的粘附性能随着紫外线和水老化时间的延长而降低，界面处的剥离作用也随之降低。当界面受到紫外线和水老化处理时，能量比明显下降，表明界面具有较高的水分敏感性。从AFM表征中可以看出，CR/SBS/Sasobit®改性沥青粘合剂的纳米粘附强度显著降低。此外，CR/Sasobit®-、SBS/Sasobit®-和CR/SBS/Sasobit®-改性沥青粘结剂的微观SFE与纳米SFE的相关系数均在0.96左右，表明其微纳SFE指标仍呈强正相关。CR/SBS/Sasobit®改性沥青粘结剂在宏观尺度上具有最高的拉脱抗拉强度（POTS）。三种尺度下的纳米黏附力、能量比和POTS指标的相关系数在0.79 ~ 0.97之间，表明温混合料/聚合物改性沥青粘结剂的评价指标具有较高的适应度。

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A multi-scale perspective on the effectiveness of UV and water aging on the interfacial properties of the asphalt-aggregate systems modified by warm agents/polymers

This study provides a multi-scale investigation of the effectiveness of ultraviolet (UV) and water aging on the interfacial properties of the asphalt-aggregate systems modified by CR/SBS/Sasobit®. The surface free energy (SFE) method, atomic force microscopy (AFM) characterization and pull-off protocols have been adopted and conducted by combining the evaluation indicators derived from micro-, nano-, and macro scales. This study employs laboratory indoor UV radiation and water immersion tests to simulate the UV irradiation and water-aging effects under the natural service conditions of asphalt pavement. The adhesion properties of the polymer/Sasobit®-modified asphalt binder-aggregate interfaces decrease with increasing UV and water-aging intervals, and so did the stripping work at the interfaces. A marked decline in the energy ratio was observed when the interfaces was subjected to UV and water aging process, indicating high moisture sensitivity. A significant decrease in the nano adhesion strength derived from AFM characterization was observed among CR/SBS/Sasobit®-modified asphalt binders. In addition, the correlation coefficients between the microscopic and nanoscale SFE of the CR/Sasobit®-, SBS/Sasobit®-, and CR/SBS/Sasobit®-modified asphalt binders is around 0.96, indicating the micro-nano SFE indicators remain strongly positively correlated. The CR/SBS/Sasobit®-modified asphalt binder exhibited the highest pull-off tensile strength (POTS) at macro scale. Furthermore, the correlation coefficients among nano-adhesion, energy ratio, and POTS indicators derived from three scales range from 0.79 to 0.97, indicating a high degree of fitness of the evaluation indexes of the warm mix/polymer-modified asphalt binders.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.