材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
論文
30年経過した深層混合処理改良体の強度特性
橋本 聖山梨 高裕林 宏親川口 貴之川尻 峻三山下 聡
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2018 年 67 巻 1 号 p. 47-52

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The strength of cement treated soil by the Deep Mixing Method (Dry Jet Mixing Method) has increasedwith progress of the time. However, it is reported that the strength of cement treated soil surface parts has decreased according to a rate of square root of the period. Conversely, it is lack of information a long term properties of cement treated soil due to that the Deep Mixing Method of construction has been developed less than 40 years. The authors carried out the unconfined compression test, the needle penetration test, and the pH test for cement treated soil by DJM 30 years after construction. Here we report a long-term strength properties of cement treated soil and the deterioration condition of cement treated soil surface.

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