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一、类型和原因沥青路面的病害常见的有裂缝、车辙、离析、泛油和水损害等。1.裂缝裂缝可分为荷载型裂缝和非荷载型裂缝。(1)荷载型裂缝产生的原因。半钢性路面的结构性破坏裂缝主要是由于行车荷载引起的。在车轮荷载作用下,半钢性基层的底部要产生拉应力。当拉应力大于半钢性基层材料的抗拉强度时,则半钢性基层底部很快开裂,在行车荷载的反复作用下,底部的裂缝会逐渐扩展
First, the type and reasons Asphalt road disease common cracks, rutting, segregation, oil and water damage and so on. 1. Crack cracks can be divided into load-type cracks and non-load-type cracks. (1) Causes of load-type cracks. The structural failure of semi-rigid pavement cracks are mainly caused by driving load. In the wheel load, the bottom of the semi-rigid base layer to produce tensile stress. When the tensile stress is greater than the tensile strength of the semi-rigid base material, the base of the semi-rigid base will crack quickly, and the cracks in the bottom will gradually expand under the repetitive driving load