摘要
为了更好地表征沥青基材料细观力学模型中各组分相互作用,基于Ju和Chen提出的双球形颗粒相互作用近似解答,采用径向分布相关函数Y(g)表征颗粒间相互作用,应用黏弹性对应原理和Prony级数的黏弹性参数转换,建立了考虑矿粉相互作用的沥青胶浆细观力学模型(J-C模型),应用该模型对不同矿粉体积分数下沥青胶浆的动态剪切模量主曲线进行预测,并通过试验对预测值进行了验证。结果表明,矿粉体积分数为10%~40%时,预测值与试验值较为吻合。随着矿粉体积分数的继续增加,矿粉相互作用增强,Y(g)值随之增大,与其他2种细观力学模型(M-T模型和C-L模型)的预测值比较,M-T模型的预测值偏低,C-L模型的预测值介于J-C模型Y(g)值为1/12~1/8的预测值之间,并且J-C模型的预测值可通过Y(g)值进行有效控制,以适用于不同条件下沥青胶浆及其他沥青基材料的黏弹性能预测。
In order to characterize the interaction between the components of micromechanical model of asphalt-based materials, based on the approximate solutions for two-particle interaction problem proposed by Ju and Chen, the radial distribution correlation function Y（g） was used to characterize the inter-particle interaction. A micromechanical model（J-C model） for asphalt mastic was established using elastic-viscoelastic correspondence principle and viscoelastic parameter transformation by Prony series, which could be used to predict the master curve of dynamic shear modulus of asphalt mastic with different filler volume fractions. And the predicted moduli were compared with the measured moduli. The results show that the predictions agree well with the measured ones in the range of 10%-40% filler volume fractions, and the filler particle interaction and Y（g） value increase with the increase of the volume fraction. Compared with the other two micromechanical models（M-T model and C-L model）, the predicted moduli of M-T model exhibit a slight decrease, and the predicted moduli of C-L model are between the predictions of 1/12 and 1/8 of the Y（g） of J-C model. The predicted results of J-C model can be effectively controlled by Y（g） values, which can be used to predict the viscoelastic properties of asphalt mastic and other asphalt-based composites under different conditions.
作者
王志臣
郭乃胜
赵颖华
陈忠达
WANG Zhichen;GUO Naisheng;ZHAO Yinghua;CHEN Zhongda(School of Materials Science and Engineering,Chang＇an University,Xi＇an 710061,China;Key Laboratory of Highway Engineering in Special Region of Ministry of Education,Chang＇an University,Xi＇an 710064,China;Institute of Road and Bridge Engineering,Dalian Maritime University,Dalian 116026,China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2018年第3期377-383,共7页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(51308084)
中央高校基本科研业务费专项资金资助项目(3132014223)
关键词
道路工程
细观模型
沥青胶浆
动态剪切模量
黏弹性
road engineering
micromechanical model
asphalt mastic
dynamic shear modulus
viscoelastic
