碳纤维发热电缆-玻纤格栅对沥青混凝土抗裂性能的影响  

Effect of Carbon Fiber Heating Cable-glass Fiber Grating on the Crack Resistance of Asphalt Concrete

作　　者：赵亚军[1,2] 冀晨宇 李桂祥 ZHAO Yajun;JI Chenyu;LI Guixiang(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;Experimental Teaching Demonstration Center of Mechanics,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北工程大学力学实验教学示范中心,河北邯郸056038

出　　处：《粉煤灰综合利用》2023年第5期87-93,共7页Fly Ash Comprehensive Utilization

基　　金：国家自然科学基金(51908178)。

摘　　要：为研究内置碳纤维发热电缆-玻纤格栅沥青混凝土的抗裂性能,对不同结构沥青混凝土进行半圆抗拉试验,并用数值模拟的方法建立热力耦合作用下的路面结构,分析升温性能和抗车辙能力。结果表明:碳纤维发热电缆的开槽效应、分层作用和本身材质给混凝土带来的不利影响抵消了发热电缆的加筋作用,使混凝土抗裂性能降低了10%左右;发热电缆升温性能较好,但在加热过程中使沥青路面变软,路面抗车辙能力降低;玻纤格栅较高的抗拉强度提高了混凝土的抗裂能力,并且格栅的网格作用限制了集料移动,提高了混凝土抗变形的能力。In order to study the crack resistance of asphalt concrete with carbon fiber heating cable and glass fiber grating,semi-circular tensile tests were carried out on asphalt concrete with different structures,and the pavement structure under thermalmechanical coupling was established by numerical simulation,and the temperature rise performance and rutting resistance were analyzed.The results show that the grooving effect,delamination effect and the adverse effects of carbon fiber heating cable on concrete offset the reinforcement effect of heating cable,which reduces the crack resistance of concrete by about 10%.The heating cable has good heating performance,but it softens the asphalt pavement and reduces the rutting resistance of the pavement during heating.The higher tensile strength of glass fiber grating improves the crack resistance of concrete,and the grid function of the grating limits the movement of aggregate and improves the deformation resistance of concrete.

关 键 词：碳纤维发热电缆 玻纤格栅 数字图像相关技术 半圆抗拉试验 数值模拟 

分 类 号：U414[交通运输工程—道路与铁道工程]