Mechanical behavior of Vinh Long soil mixed with cement

• Published in: IOP conference series. Materials Science and Engineering Vol. 869; no. 7; pp. 72004 - 72013
• Main Authors: Thanh Truong, Quang, Linh Nguyen, Ngoc, Quynh Nhu Nguyen, Thi
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.06.2020
• Subjects: Cement; Cement reinforcements; Compressive strength; Curing; Deformation resistance; Geology; Load resistance; Mechanical properties; Modulus of elasticity; Soft ground; Soil layers; Soil mechanics; Soil mixing
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/869/7/072004

Recently, deep soil mixing has been constructed in Vietnam. However, the researchers applying this solution to reinforce soft ground with geological conditions of Vinh Long are not common. This paper concentrates on study of mechanics of soil samples which are compatile with Vinh Long geological conditions. Experiments on unconfined compressive strength were performed to analyze mechanical behaviors in the duration of curing samples. Soils taken from two layer of researching area were mixed with cement with the content from 150 kg/m3 to 250 kg/m3, then were curing in duration of 7 days, 14 days, 28 days and 60 days. Results of tests at specified timeline show that unconfined compressive strength of most mixing samples increases with the cement content and curing period. The secant modulus of elasticity is determined from the deformation resistance test, then the loading capacity of samples can be deduced. The secant modulus of elasticity increases when the unconfined compressive strength increases. This article is a valuable reference in the design of cement-reinforced soft soil for application in infrastructure engineering.