裂缝是路面损坏的一个大问题,由于刚开始形成时,人们往往对其危害认识不足,而且由于处理裂缝的工艺及材料的限制,仅进行简单的灌缝处理,随着车轮的挤压和气温的变化会造成封缝料的流失。裂缝处随着水的侵入会造成基层的损坏,给路面造成较大的破坏。经过近几年的观测,京沪高速公路路面的裂缝主要发生于通车后的第二年以后。2000年12月底通车后经过2001年的运 Crack is a big problem of pavement damage. Since the beginning of formation, people often do not know enough about its hazards. And because of the limitation of craftwork and material, the crack is only dealt with simply by pouring. With the squeezing of wheel and temperature The change will cause the loss of sealing material. With the infiltration of water at the crack will cause grass-roots damage, causing greater damage to the road. After recent years of observation, the cracks in the pavement of the Beijing-Shanghai Expressway mainly occurred after the second year of opening. After the opening of the end of December 2000 after the transport of 2001