Improving the strength of the Nha Be soft soils by Portland cement

The article presents the increase of strengths of the soft soils in the Nha Be corresponding with the increase of contents of Portland cement. The Holocene sediments are soft to very soft with water content being over 90%, low strength, bearing capacity being less than 1 kG/cm2 and very large consol...

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Bibliographic Details
Main Authors: Ngo, Phong-Thanh, Phan, Vu To-Anh, Phan, Thanh Nguyen-Ngoc
Format: Conference Proceeding
Language:English
Subjects:
Bearing capacity
Cement
Moisture content
Portland cements
Sediments
Soft ground
Soft soils
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Summary:The article presents the increase of strengths of the soft soils in the Nha Be corresponding with the increase of contents of Portland cement. The Holocene sediments are soft to very soft with water content being over 90%, low strength, bearing capacity being less than 1 kG/cm2 and very large consolidated settlements. Therefore, the soft ground needs to be improved. The cement used for improving the soft soils could seem to be effective like high strength increase in a short time. The soil samples were mixed with the cement in the contents such as 120kg/m3, 130kg/m3, 140kg/m3, and 200kg/m3, respectively. The mixed specimens were kept for 7 and 28 days. The results indicated that the appropriate cement content is 130 kg/m3 and the strengths of the mixed soils were double that of the undisturbed soils.  
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0068375