接缝密封程度 ,取决于填缝材料 ,此也是提高水泥混凝土路面使用质量和使用寿命的关键技术之一。聚氨酯填缝胶其性能优于其他材料 ,有推广应用价值 ,对就其材料组成、主要技术指标和施工工艺等方面作了简介 Seam sealing depends on the caulking material, which is also one of the key technologies to improve the service quality and service life of cement concrete pavement. Polyurethane sealant its performance superior to other materials, the promotion of the use of value, on its material composition, the main technical indicators and construction technology and other aspects