Asphalt Pavement Performance Forecast Model And Preventive Maintenance Measure Research In The Expressway

At present, although already in Guangdong province highways on the construction of a variety of preventive maintenance forms of experiment sections, in order to delay due to a variety of factors of road early damage phenomenon, but due to the relevant process and technology also is only at learning, introduction and imitate the primary phases, therefore prophase built test section effect all is not ideal.The correct PPM should be according to the pavement performance index, at the right time and right place and take appropriate measures to get proper pavement functional recovery. And in the process, "pavement performance index" and "time", "location" and "measures", "functional recovery is not yet to establish an effective between the derivation of relations and model.Accordingly, according to curing test section process condition, use environment and the use effect of system evaluation and summary, generalization the applicable scope of the preventive maintenance measures, set up representative pavement performance prediction model, then realizing scientific aided decision-making and improve maintenance fee effect than money, it is extremely necessary.This paper based on a highway project in Guangdong province road performance testing, pavement performance evaluation; establish the pavement performance model in pavement performance prediction. On this basis, the choice targeted road repair and preventive maintenance measures. These activities to improve highway asphalt pavement performance, extend pavement service life is important. Meanwhile, as a method of study for other highway asphalt pavement preventive maintenance plan formulation, also has important reference value.