求解含有弱界面的沥青混合料的弹性模量  

Elastic modulus of asphalt mixture with weak interface

作　　者：易富[1] 赵琪琪[1] 张旖旎[1] 张利阳[1] YI Fu;ZHAO Qiqi;ZHANG Yini;ZHANG Liyang(School of Civil Engineering and Transportation, Liaoning Technique University, Fuxin 123000, China)

机构地区：[1]辽宁工程技术大学土木与交通学院,辽宁阜新123000

出　　处：《铁道科学与工程学报》2017年第12期2580-2585,共6页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51774163)

摘　　要：采用弹簧型界面,根据广义自洽理论和代表体元理论建立细观力学模型,以弹性理论为基础推导出沥青混合料的弹性模量解析式。算例和模量影响因素分析表明:沥青混合料弹性模量的预测值在学者研究得到的参考值附近波动;沥青混合料弹性模量受骨料特性、骨料含量和沥青胶浆特性的影响,随着骨料模量的增加而增加,骨料体分比在0.3~0.4范围内弹性模量达到最大值。沥青胶浆弹性模量较小时,沥青混合料的弹性模量随骨料体分比呈线性增长,沥青胶浆弹性模量较大时,较少的骨料就能使沥青混合料模量达到最大值,骨料过多反而会降低沥青混合料的力学性能。By means of the spring type interface,mesoscopic mechanics model was established according to the theory of generalized self-consistent and that of the Representative Volume Element.Analytical solutions of the elastic modulus of asphalt mixture were deduced on the basis of the elasticity theory.Calculation examples and modulus influence factors analysis show that predicted value of elastic modulus of asphalt mixture fluctuates is close to the reference value obtained through scholar’s study.The elastic modulus of asphalt mixture is affected by aggregate characteristics,aggregate content and the properties of asphalt mortar.The elastic modulus,which increases with the increase of aggregate modulus,reaches maximum when aggregate ratio ranges from0.3to0.4.If elastic modulus of asphalt mortar is lower,that of asphalt mixture increases linearly with aggregate ratio,while if asphalt mortar presents a higher elastic modulus,less aggregate can make modulus of asphalt mixture reach the maximum.Overmuch aggregate,however,lowers the mechanics performance of asphalt mixture.

关 键 词：弱界面 弹性模量 广义自洽理论 夹杂材料 细观力学 

分 类 号：TB332[一般工业技术—材料科学与工程]