STRENGTH PREDICTION METHOD FOR MODIFIED SOIL, AND MANUFACTURING METHOD OF MODIFIED SOIL

PROBLEM TO BE SOLVED: To provide a strength prediction method for modified soil that can predict a strength of modified soil even when dredge soil to which a modifier is added to obtain the modified soil changes, along with a manufacturing method for modified soil that uses the strength prediction method.SOLUTION: There is provided a strength prediction method for modified soil in which two or more types of test dredge soil is prepared, and electric conductivity of water contained in each type of the test dredge soil is measured; uniaxial compressive strength of test modified soil, obtained by adding a modifier to each type of the test dredge soil, is also measured to obtain a correlating equation between the electric conductivity of the test dredge soil and the uniaxial compressive strength of the test modified soil; and the uniaxial compressive strength of the modified soil obtained from the dredge soil is predicted, utilizing the electric conductivity of water contained in dredge soil used in actual manufacturing, on the basis of the correlating equation. A manufacturing method for modified soil is also provided that uses the strength prediction method.SELECTED DRAWING: Figure 7 【課題】改質材を添加する対象の浚渫土が変わっても、得られる改質土の強度を予測することができる改質土の強度予測方法、及びこれを用いた改質土の製造方法を提供する。【解決手段】２以上の試験用浚渫土を用意して、各試験用浚渫土が保有する水の電気伝導度を測定すると共に、それぞれの試験用浚渫土に改質材を添加して得られる試験改質土の一軸圧縮強度を測定して、試験用浚渫土の電気伝導度と試験改質土の一軸圧縮強度との相関式を求めた上で、その相関式に基づいて、実製造で使用する浚渫土が保有する水の電気伝導度から、得られる改質土の一軸圧縮強度を予測する改質土の強度予測方法であり、また、これを用いた改質土の製造方法である。【選択図】図７