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三、接缝密封材料 接缝密封材料是与防水层配套使用的一类防水材料,主要用于防水工程嵌填各种变形缝、分格缝、墙板板缝,密封细部构造及卷材搭接缝等部位。接缝密封材料有:改性沥青接缝材料和合成高分子接缝密封材料两种,其分类和常用的品种见图3。 (一)改性沥青接缝材料 该接缝材料是以石油沥青为基料,掺加废橡胶、废塑料作改性材料及填料等制成。因其综合性能较差,已逐渐被合成高分子类接缝密封材料所替代。 (二)合成高分子接缝密封材料
Third, seam sealing material Joint sealing material is a type of waterproof material used in conjunction with the waterproof layer, mainly used for waterproofing works to embed a variety of deformation joints, sub-lattice seams, wallboard seams, sealing detailed structure and coil ride Seams and other parts. Joint sealing materials are: modified asphalt joint materials and synthetic polymer joint sealing materials. The classification and commonly used varieties are shown in Figure 3. (I) Modified asphalt joint material The joint material is made of petroleum asphalt as base material, mixed with waste rubber and waste plastics as modified materials and fillers. Because of its poor overall performance, it has gradually been replaced by synthetic polymer joint sealing materials. (B) Synthetic Polymer Joint Sealing Material