NEXCEL Project Paper 46
Release time: 2025/12/23 Publisher： original Views：
Investigation on physical, rheological properties and VOCs emission of asphalt modified with hydrocarbon-based graphene
Prof. Chen Meizhu from Wuhan University of Technology, Principal Investigator of NEXCEL 2024 SFP project titled 'Application and demonstration of hydrocarbon-based graphene in asphalt mixture', have published a paper entitled 'Investigation on physical, rheological properties and VOCs emission of asphalt modified with hydrocarbon-based graphene' in 'Construction and Building Materials' (SCI) recently.
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.
Paper details:
Construction and Building Materials, Volume 469, 28 March 2025, 140474
DOI：https://doi.org/10.1016/j.conbuildmat.2025.140474