Investigation on physical, rheological properties and VOCs emission of asphalt modified with hydrocarbon-based graphene

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-02-25 DOI:10.1016/j.conbuildmat.2025.140474

Yansong Fan , Meizhu Chen , Xiaoyu Yang , Jianwei Zhang , Jun He , Muyan Han

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引用次数: 0

Abstract

Hydrocarbon-based graphene (HG), derived from petrochemical by-products, can be economically produced in large-scale quantities needed for asphalt pavement application requirements. With the intention of exploring the application feasibility of HG in asphalt materials, the properties of HG were elucidated firstly. Basic properties and storage stability of hydrocarbon-based graphene modified asphalt (HGMA) were evaluated while its rheological behaviors and functional group were characterized. In addition, the concentrations of volatile organic compounds (VOCs) in HGMA containing different dosages of HG were assessed. The experimental results indicate that HG possesses a lamellar and pore structure, which is conducive to fusion with asphalt molecules and adsorption capacity. HGMA is harder and expresses weaker sensitivity to temperature than petroleum asphalt. The dispersion of HG in asphalt is uniform when the dosage does not exceed 1.5 % by mass of petroleum asphalt. Incorporation of HG improves the elastic recovery and anti-rutting abilities of asphalt while fatigue resistance is weakened and embrittlement is prone to occurrence. Modification of HG on asphalt belongs to a physical process. The inhibition effect of HG on VOCs emission of asphalt is positively correlates with its dosage, and the maximum concentration and stable concentration of VOCs are reduced by 58 % and 60 % respectively when the dosage of HG reaches 1.5 %. The experimental results provide a foundation for future application and development of HG in asphalt materials.

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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.