Influence of water content of surrounding soil on surface strength of cement-treated soil

Cement-treated soil specimens were contacted with surrounding soils having different water contents in order to investigate surface strengths affected by calcium leaching. The strength of sound parts of the treated-soils continuously increased until 2 years, the maximum material age in this study. O...

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Bibliographic Details
Published inJapanese Geotechnical Journal Vol. 14; no. 4; pp. 307 - 320
Main Authors YOSHIDA, Masahiko, NAKARAI, Kenichiro, KIYOTA, Masato, IZUO, Hidefumi
Format Journal Article
LanguageJapanese
Published Tokyo The Japanese Geotechnical Society 25.12.2019
Japan Science and Technology Agency
Subjects
Arsenic
boundary condition
Calcium
calcium leaching
Cement
cement-treated soil
Concrete
Leaching
Moisture content
Preservatives
Soil
Soil investigations
Soil layers
Soil resistance
Soil strength
Soil treatment
Soil water
Soils
Strength
strength development
Surface boundary layer
Surface layers
Water content
Water depth
Water treatment
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ISSN1880-6341
1880-6341
DOI10.3208/jgs.14.307

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Summary:Cement-treated soil specimens were contacted with surrounding soils having different water contents in order to investigate surface strengths affected by calcium leaching. The strength of sound parts of the treated-soils continuously increased until 2 years, the maximum material age in this study. On the other hand, the surface layer of the treated-soils showed lower strength development by contact with the surrounding soils. At the interface between the treated and surrounding soils, the alteration caused by calcium leaching was observed. The altered depth by calcium leaching varied depending on the water contents of the surrounding soils. The lower the water contents of the surrounding soils, the smaller the calcium decreased depth of the treated-soil. However, the relationships between the calcium decrease ratio and the strength decrease ratio of the treated soil showed similar trends regardless of the water contents of the surrounding soils. The higher leaching resistance of the treated soil contacted with the low water content soil could be explained by increase in solid ration at the surface layer, due to transfer of water from the treated soil to the surrounding soil before hardening of the treated soil.
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ISSN:1880-6341
1880-6341
DOI:10.3208/jgs.14.307