Abstract
This paper presents the experimental results of consolidation properties of soft soil in Ho Chi Minh City of Vietnam. Forty-two samples were collected from different locations and were determined in the laboratory by Oedometer test. The results showed that the coefficient of consolidation of soft soil varies from 0.052.10-3 to 3.3.10-3cm2/s, otherwise the compression index changes from 0.156 to 1.703, soil is in a normally consolidated or over the consolidated state. These properties also change differently with depth. It also indicated that the compressive index of soft soil has a fine linear relationship with the liquid limit، water content, and void ratio. The coefficient of consolidation of soft soil decreases with the increase of compression pressure. These parameters are basic for calculating the settlement of underground structures in Ho Chi Minh City.
Highlights
Being one of the largest cities in Vietnam, Ho Chi Minh is a pioneer in developing urban underground
The results indicated the main parameters of consolidation properties and confirmed that the consolidation properties of soft soil consist of primary consolidation and secondary consolidation
This paper aims at studying consolidation properties of soil through experiments of soft soil samples distributed in Ho Chi Minh City of Vietnam
Summary
Being one of the largest cities in Vietnam, Ho Chi Minh is a pioneer in developing urban underground. One of the most properties of soft soil that have a great influence on the instability of the construction is the consolidation properties (Radhika et al, 2017). The consolidation properties of soft soil were studied by some researchers. Chu et al (2002) studied consolidation properties and permeability of marine clay in Singapore and indicated that vertical coefficient of consolidation (Cv) varied widely and ranged from 0.5 -2.0 m2/years. O’kelly (2006) investigated the consolidation properties of eleven different types of soft soil in both vertical and horizontal directions. Bo et al (2015) showed a large variation of coefficients of consolidation of the upper, middle, and lower parts of the marine clay in Singapore because of different soil structures.
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