BW putty type water stop bar
The BW water stop strip is made of more than ten kinds of materials, such as special rubber, inorganic water ABSorbing material and high viscosity resin, and so on. It is a kind of cross section which has been developed on the basis of foreign products. Depending on its own viscous direct paste preset in the concrete construction joints, post-pouring joints interface, after the second pouring of concrete (that is, the state of being wrapped by concrete). The product will expand gradually after the water meets the water, on the one hand plugging the possible capillary pores, on the other hand, the contact of the concrete interface is more close, thus producing large water resistance pressure and forming a water permeable plastic colloid. The product has high expansion ratio, strong mobile supplement, placed in construction seam, after pouring seams. It has strong balance and self healing function, and can
BW腻子型止水条
BW止水条系以进口特种橡胶，无机吸水材料、高粘性树脂等十余种材料经密炼、混炼、挤至而成，它是在国外产品的基础上研制成功的一种断面为四方形条状自粘性遇水膨胀型止水条。依靠其自身的粘性直接粘贴预置在混凝土施工缝、后浇缝的界面上，二次浇注混凝土后（即被砼包裹的状态下）。该产品遇水后会逐渐膨胀，一方面堵塞可能存在的毛细孔隙、另一方面使其混凝土界面的接触更加紧密，从而产生较大的抗水压力，形成不透水的可塑性胶体，该产品具有膨胀倍率高，移动补充性强，置于施工缝，后浇缝后具有较强的平衡自愈功能，可自行封堵因沉降而出现的新的微小缝隙，对于已完工的工程，如缝隙渗漏水，可用该止水条重新堵漏，使用该止水条费用低且施工工艺简单，耐腐蚀性佳。该产品1988年6月在北京通过部级鉴定，荣获1991年国家科技成果奖，为解决混凝土施工缝，后浇缝渗漏问题开创了新路，填补了我国防水材料的一项空白。产品质量达到了世界领先水平。该技术成果转让我公司后，几年来通过更严格的理论分析，科学实验和广泛征求用户提出的改进意见，我们有研制出BW-Ⅰ型、BW-Ⅱ型、BW-Ⅲ型（缓膨）、BW-Ⅳ型（缓膨）止水条、形成了适应不同工程条件需要的比较完善的自粘性遇水膨胀止水条。
problem of concrete construction joints and post pouring seams, and filled a blank of China's waterproof material. The quality of the product has reached the leading level in the world. After the transfer of the technical results to our company, we have developed BW- I, BW- II, BW- III (slow expansion), BW- IV type (slow expansion) water stop for several years through more rigorous theoretical analysis, scientific experiments and extensive consultation with the users. We have formed a better self-adhesive to meet the needs of different engineering conditions. Water swelling stops with water.
problem of concrete construction joints and post pouring seams, and filled a blank of China's waterproof material. The quality of the product has reached the leading level in the world. After the transfer of the technical results to our company, we have developed BW- I, BW- II, BW- III (slow expansion), BW- IV type (slow expansion) water stop for several years through more rigorous theoretical analysis, scientific experiments and extensive consultation with the users. We have formed a better self-adhesive to meet the needs of different engineering conditions. Water swelling stops with water.
BW遇水膨胀橡胶止水条的主要规格有：30×20、20×15、30×40、20×50mm等。
项 目 膨胀率 剥离强度 剪切强度 耐水压 耐高温 耐低温 比重
性能指标 静水浸泡24h100%
大300-500% 0.01MPa 0.06MPa 1.2MPa 150℃不流淌 -30℃不发脆 1.5
特点:
1、 浸水膨胀，“以水止水”；
2、 膨胀速度慢，浸水186h其膨胀率≤大膨胀率的50%；
3、 施工方便，价格低廉
4、 无毒无污染
5、 在长时浸水作用下无溶解物析出；
6、 与其他亲水膨胀止水带相比大的分别是它的亲水膨胀性经长期的反复膨胀后仍没有失去。
建议施工工艺
⑴对有预留式的粘贴方式，在先浇混凝土中需预留上止水条安放槽（可在模板中钉木条预留）。
⑵拆除先浇混凝土模板后，清除表面，使缝面无水、干净、无杂物。
⑶将止水条嵌入预留槽内。如不预留槽，对垂直缝可加用粘结剂全长粘贴，或用水泥钉加木条固定止水条；对水平缝可直接粘贴于混凝土表面。
(4）止水条粘贴以后应尽快浇注混凝土。
(5）在安装粘贴过程中，应防止止水条受污染和受水的作用，以免景响使用效果。
block new small crevice caused by settlement. For completed projects, such as crevice leakage, the water stop bar can be used to block the leak, the use of the water stop bar is low, the construction technology is simple, and the corrosion resistance is the best. In June 1988, the product was identified by the ministerial level in Beijing and won the 1991 national scientific and Technological Achievement Award. It opened a new way to solve the leakage
block new small crevice caused by settlement. For completed projects, such as crevice leakage, the water stop bar can be used to block the leak, the use of the water stop bar is low, the construction technology is simple, and the corrosion resistance is the best. In June 1988, the product was identified by the ministerial level in Beijing and won the 1991 national scientific and Technological Achievement Award. It opened a new way to solve the leakage
