供应【【北京耐磨料厂家】【耐磨料多少钱】
供应【【北京耐磨料厂家】【耐磨料多少钱】，耐磨料配方，耐磨料施工，耐磨料规格，耐磨料规格，耐磨料用量，耐磨料配方，任经理                电话：13716907927            防冻剂掺量，北京防冻剂最低价，本品具有早强、防冻、泵送、低碱、无氯等特点。                                                              
用途                                                                APPLICATION                                                              
本品主要应用于负温水泥混凝土。                                                              
使用方法HOW                                                                TO                                                                USE                                                              
1、掺量：本品按照水泥重量的4~5%添加。                                                              
2、搅拌前，用热水或蒸汽冲洗搅拌机。先加入砂子、石子和热水搅拌约1min，再加入水泥和防冻剂搅拌3min。根据确保混凝土入模温度≥10℃来决定搅拌用水的温度。                                                              
3、砂、石要用帆布或塑料布覆盖，防止砂石冻结。水泥不得直接加热，在使用前1天运入暖棚内存放，使它保持正温。                                                              
4、混凝土浇筑前清除模板和钢筋上的冰雪、污垢。不得用蒸汽直接融化冰雪，以免再结冰。新浇筑混凝土的外露表面及时用塑料膜及保温材料覆盖，按照随浇筑、随振捣、随覆盖的原则连续作业。                                                              
5、水泥选用强度等级32.5以上的硅酸盐水泥或普通硅酸盐水泥。砂、石要清洁过筛，不得含有冰、雪等冻结物及易冻裂的物质。                                                              
6、掺加防冻剂混凝土搅拌应符合下列规定：                                                              
①严格控制防冻剂的掺量和水灰比，由骨料带入的水分及防冻剂溶液中的水，                                                                                                                                应从拌合水中扣除。                                                              
②掺防冻剂混凝土混合料的出机温度严寒地区不得低于15℃；寒冷地区不得低于10℃。入模温度，严寒地区不得低于10℃，寒冷地区不得低于5℃。                                                              
7、掺加防冻剂混凝土养护应符合下列规定：                                                              
①在负温条件下养护时不得浇水，混凝土浇筑后应立即用塑料薄膜及保温材料                                                                覆盖，严寒地区应加强保温措施。                                                              
②初期养护温度不得低于规定温度。当混凝土温度降低到规定温度时，混凝土强度必须达到受冻临界强度；当最低温度不低于-10℃时，混凝土抗压强度不得小于3.5Mpa；当最低温度不低于-15℃时，混凝土抗压强度不得小于4.0Mpa；当最低温度不低于-20℃时，混凝土抗压强度不得小于5.0Mpa。                                                              
③拆模后，混凝土表面温度与环境温度之差大于20℃时，应采取保温材料覆盖养护。                                                              
                                                                                                                              
包装储存                                                                PACKAGE                                                                &                                                                STORAGE                                                              
包装：牛皮纸塑膜袋，内衬防潮塑料膜，包装规格为25公斤/袋。                                                              
储存：储存在干燥通风处，避免日晒，注意防潮、防水，储存期12个月。