机场复合道面劣化原因分析与长寿命化对策

Cause Analysis of Deterioration of Airport Composite Pavement and Countermeasures for Longevity

为延长机场跑道的使用寿命,在旧水泥混凝土道面上,加铺沥青混凝土,形成复合道面,以提高道面使用性能.调查发现:加铺沥青混凝土3～5a后,复合道面在旧水泥混凝土道面接缝、裂缝位置出现破损劣化.为此,在分析机场复合道面劣化原因的基础上,提出延长机场复合道面寿命的对策,即适当增加加铺层厚度,设置应力吸收夹层,封堵旧水泥混凝土道面裂隙.

In order to prolong the service life of the airport runway,asphalt concrete is laid on the old cement concrete pavement to form a composite pavement to improve its performance.It is found that after the asphalt concrete is added to3~5a,the joint and crack position of the composite pavement in the old cement concrete pavement is damaged and deteriorated.Therefore,based on the analysis of the causes of the deterioration of the airport composite pavement,the countermeasures for prolonging its service life are put forward,such as increasing the thickness of the overlay,setting the stress absorbing interlayer and blocking the old cement concrete pavement cracks.