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    • 2. 发明专利
    • Water impervious material injection type water impervious work, system, and polyvinyl alcohol-system injection type water impervious material
    • 水不正确的材料注射类型水不正确的工作,系统和聚乙烯醇系统注入类型的水不正确的材料
    • JP2005087990A
    • 2005-04-07
    • JP2004231509
    • 2004-08-06
    • Kajima CorpKuraray Co LtdRailway Technical Res Inst株式会社クラレ財団法人鉄道総合技術研究所鹿島建設株式会社
    • OZAWA KAZUYOSHIKAWABATA JUNICHIKOBAYASHI TOSHIAKISHIROTANI YASUHIROISE TOMOKAZUKUSUDO KAZUMASATATEYAMA MASARUYAGUCHI NAOYUKI
    • E02B7/02B09B1/00
    • PROBLEM TO BE SOLVED: To provide a water impervious material injection type water impervious work causing little uneven solidification, and a polyvinyl alcohol-system injection type water impervious material.
      SOLUTION: A plurality of layers of water impervious sheets 6a, 6b are laid with circumferential edges closely brought into contact with the ground face 1 where a load is set, a space d is secured between the adjacent water impervious sheets 6a, 6b against the load by using a porous spacer 7, and a polyvinyl alcohol-based impervious material aqueous solution 10 with adjustable gelation time t by pH is injected into the gap d. Preferably, the aqueous solution 10 has a pH value making the gelation time t equal to or longer than a solution charging time t
      0 into the gap d, and the gap d is evacuated when the aqueous solution 10 is injected. One of examples of the water impervious material is an aqueous solution 10 in which a polyvinyl alcohol-based polymer of the degree of polymerization of 500 or more, a water soluble crosslinking agent having in its molecules two or more methylol groups, and a pH adjusting agent are dissolved. The degree of polymerization, polymer concentration and the mole ratio of the methylol groups to the vinyl alcohol unit in the polymer impart given water impervious properties to the water impervious gel.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供不透水凝固的不透水材料注射型防水工作,以及聚乙烯醇系注射型防水材料。 解决方案:多层不透水片材6a,6b被铺设成周边边缘紧密地与放置负载的接地面1接触,空间d固定在相邻的不透水片材6a,6b之间 通过使用多孔隔离物7与负载相反,并且通过pH将具有可调凝胶时间t的聚乙烯醇类不透水材料水溶液10注入到间隙d中。 优选地,水溶液10具有使间隙d中的凝胶化时间t等于或长于溶液充填时间t 0 的pH值,并且当水溶液10为 注射。 防水材料的一个例子是水溶液10,其中聚合度为500以上的聚乙烯醇类聚合物,其分子中具有两个或更多个羟甲基的水溶性交联剂和pH调节 药剂溶解。 聚合物的聚合度,聚合物浓度以及聚合物中羟甲基与乙烯醇单元的摩尔比赋予防水凝胶给予不透水性。 版权所有(C)2005,JPO&NCIPI