机场道面快速薄层修补技术试验研究  

Experimental Research on Fast Thin Layer Repair Technology of Airport Pavement

作　　者：杜伟 DU Wei

机构地区：[1]内蒙古交通设计研究院有限责任公司

出　　处：《内蒙古公路与运输》2021年第2期40-42,共3页Highways & Transportation in Inner Mongolia

摘　　要：以呼和浩特白塔国际机场为依托,对飞行区水泥混凝土道面快速薄层修补技术进行试验研究。根据水泥混凝土修补薄层的实际应力特点,研究新老混凝土界面抗剪粘结强度,分析得出粗糙度是影响新老混凝土抗剪粘结强度的可控因素。将老混凝土表面凿毛成1mm~2mm、2mm~3mm、3mm~4mm、4mm~5mm、5mm~6mm和6mm~7mm六种粗糙度后进行直剪试验,研究表面粗糙度与界面抗剪粘结强度的关系。研究结果显示:当老混凝土平均构造深度在3mm~4mm时,新老混凝土抗剪粘结强度最大。试验研究结果可为现场施工提供参考。Based on Hohhot Baita International Airport,the rapid thin layer repair technology of cement concrete pavement in the flying area was studied experimentally.According to the actual stress characteristics of cement concrete repair thin layer,the shear bond strength of new and old concrete interface was studied.It is concluded that the roughness is a controllable factor affecting the shear bond strength of new and old concrete.The old concrete surface is chiseled into six roughnesses of 1~2 mm,2~3 mm,3~4 mm,4~5 mm,5~6 mm,and 6~7 mm and then subjected to a direct shear test to study the relationship between the surface roughness and the shear bond strength of the interface.The comprehensive analysis shows that when the average structural depth of the old concrete is 3-4 mm,the shear bond strength of the new and old concrete is the largest.This test result provides a corresponding reference for on-site construction.

关 键 词：机场道面 快速薄层修补 直剪试验 界面抗剪粘结强度 构造深度 

分 类 号：U418[交通运输工程—道路与铁道工程]