へどろ・軟弱土処理における各種固化材の比較検討

概要

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Special solidificants have often been used in recent years for treatment of Hedoro (bottom sediment mud) and soft soil. However, the conditions for application and the effects of such special solidificants are not yet thoroughly understood. Comparison tests of 14 varieties of cement-type solidificants were therefore performed. (1) The solidificants were found to contain CaO, SiO_2, Al_2O_3 and SO_3, and were divided into six groups according to the amounts of these components contained. (2) A solidificant having a large content of SO_3 (11〜13%) produced the highest strength. On the other hand, ordinary portland cement and solidificants of similar composition produced low strengths. (3) It was observed by means of an X-ray diffractometer and a scanning electron microscope that the formation of ettringite in solidified soil contributed greatly to strength gain.
社団法人日本材料学会の論文
1982-02-15