材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
中性シリカゾルを用いたグラウトとその施工効果について
島田 俊介下田 一雄江口 博昭栢原 健二
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1982 年 31 巻 341 号 p. 144-150

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The injection engineering has been making a rapid innovation during the past few years, specifically from the point of the high efficiency and anti-pollution measures.
The conventional method utilizes the gelling characteristics of water glass in its alkaline range. Our new injection material utilizes the gelling characteristics of non-alkaline silica sol which is obtainable by removing alkali from water glass.
In this paper, the principle of gelation, the results of various laboratory tests, the toxic test by using rats and killi fish, and the germination test of rice seeds were described.
Furthermore, the examples of practical application in the cable buried works in the ground consisting of fine sand or complex soil layer were demonstrated where the efficiency of using this new injection material was found to be satisfactory.

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