DISTRIBUTION OF GROUTS IN SOLIDIFIED REGION ON CHEMICAL GROUTING

概要

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This paper investigates the volume ratio α of grout entered into void space in each part of solidified region by chemical grouting for the sandy ground. In long gel time grouts, the value of α is in 80〜lOO% unless the hydrofracturing occurs and α does not practically depend on the distance from the injection borehole. On the other hand, in short gel time grouts, α of the region near to injection hole is more than 100%, because the pore gel in the solidified body is concentrated when the succeeding grouts penetrate the solidified body. As a whole, the solidified volume is almost equal to the solidified volume when α is supposed to be 100%, irrespective of the gel time of grouts, as long as the injection rate q is smaller than the critical injection rate qCR. qCR is the maximum value of injection rate which does not initiate the hydrofracturing of ground.
社団法人地盤工学会の論文
1989-12-15