国际上通过大量调查认为,公路在75%的寿命时间内性能会下降40%,如果在这个阶段采取路面养护措施,可以取得事半功倍的效果;如果错过这个阶段,在后面12%的寿命时间内性能又会迅速下降40%,这时的养护成本将比前面这个阶段增加3～10倍。所以,这个阶段被称为矫正性养护阶段,采用的技术设备也称为预防性路面养护技术设备。 Internationally, a large number of surveys have concluded that the highway will have a 40% drop in performance over a 75% lifetime, and if pavement maintenance measures are taken during this phase, a multiplier effect can be achieved; if this phase is missed, performance will be 12% Will rapidly decline 40%, then the conservation costs than the previous stage of this increase of 3 to 10 times. Therefore, this phase is called the phase of corrective maintenance, the technical equipment used is also called preventive pavement maintenance technology equipment.