Due to the complex construction environment , the in-situ cement concrete road slab of the urban road often has some cracks during the construction and the early period after usage .

• 城市道路的现浇水泥混凝土路面板,由于施工环境复杂,施工中以及使用后早期常常产生一些裂缝,致使路面板在使用后时间不长即受破坏。