森林工程2025，Vol.41Issue(1)：185-194,10.DOI:10.7525/j.issn.1006-8023.2025.01.015
硅烷改性钛石膏沥青胶浆性能研究
Investigation of the Characteristics of Silane-modified Titanium Gypsum Asphalt Mortar
摘要
Abstract
In order to lessen the environmental issues caused by the accumulation of titanium gypsum and to also alleviate the cur-rent situation of road material shortage,titanium gypsum and silane coupling agent-treated titanium gypsum were used to partially or completely replace limestone mineral powder.Additionally,the effects of titanium gypsum and modified titanium gypsum on the con-ventional and rheological properties of asphalt mastic were investigated.First,a laser particle size meter and a scanning electron mi-croscope were used to examine the micro-morphology and particle size distribution of titanium gypsum,modified titanium gypsum,and limestone mineral powder.Subsequently,asphalt mortar containing varying amounts of titanium gypsum and modified titanium gyp-sum dosage was prepared.The asphalt mortar's three main indicators(penetration,ductility,and softening point),as well as its high temperature and low temperature rheological performances,fatigue resistance,were tested using conventional testing methods,tem-perature scanning test,frequency scanning test,multiple stress creep recovery test(MSCR),linear amplitude scanning test(LAS),and bending beam rheological test(BBR).The findings indicated that:titanium gypsum and modified titanium gypsum had a wider particle size range and a rougher surface.The addition of titanium gypsum and modified titanium gypsum decreased the asphalt mor-tar's ductility,penetration,unrecoverable creep flexibility(Jnr),fatigue life(Nf),creep rate(m)and phase angle(δ),while the softening point,complex modulus(G*),resilience(R)and stiffness modulus(S)were increased.In other words,performance at high temperatures was enhanced while low temperatures and weariness were decreased.The low-temperature performance was de-creased and the high-temperature performance and elastic recovery indexes of modified titanium gypsum outperformed those of tita-nium gypsum at the same temperature.The determination of the viability of utilizing titanium gypsum in the creation of asphalt mix-tures provides a path forward for the resource's exploitation.关键词
钛石膏/沥青胶浆/改性钛石膏/矿粉/流变性能Key words
Titanium gypsum/asphalt mortar/modified titanium gypsum/mineral powder/rheological properties分类
交通工程引用本文复制引用
董营营,苏纪壮,张朝,魏毛元,张惠勤,王凯..硅烷改性钛石膏沥青胶浆性能研究[J].森林工程,2025,41(1):185-194,10.基金项目
山东省重点研发计划(2020CXGC011405). （2020CXGC011405）
