Experimental Study on Disintegration of Guilin Red Clay

Abstract

In order to study the disintegration characteristics of red clay under different moisture content and temperature, red clay taken from Guilin was prepared into samples with different moisture content, and the disintegration test of red clay was carried out by self-made test equipment. Considering the influence of water absorption and weight gain in red clay, a parallel water absorption test was carried out for each disintegration test, and the disintegration amount–time relationship curve was corrected with the results of the water absorption test so as to propose a new disintegration amount calculation formula. In this experiment, the disintegration characteristics of red clay under different moisture content and temperature were investigated. The experimental results show that the disintegration amount decreases with the increase in moisture content, the moisture content exceeds 25%, and the red clay basically does not disintegrate within 2 h. The amount of disintegration increases with increasing temperature, but the disintegration of red clay in natural environments is not sensitive to temperature. The comprehensive analysis of moisture content and temperature shows that in the natural climate range, moisture content is the main influencing factor of soil disintegration.

Study on the Influence of Moisture Content and Void Ratio on the Disintegration of Red Clay

“…Ruiz-Vera et al [18] considered that the soil disintegration rate is closely related to the initial moisture content. Liu et al [19] and Chen et al [20] investigated the impact of varying moisture levels on the disintegration of Guilin red clay and granite residual soil. However, they did not adequately consider the pore structure of the soil-rock mass.…”

Characteristics of Water Disintegration and Fractal Mechanism of Red Sandstone in Northwest China

“…Liu et al [15,16] through the disintegration test of soft rock, that the disintegration of soft rock is a multiple fractal process, the introduction of fractal theory to get a quantitative description of the disintegration process of the red layer soft rock fractional dimensional indexes, the establishment of a mathematical model to simulate the disintegration of the red layer soft rock, and also pointed out that the nature of the red layer material is stable after the complete disintegration of the red layer, the treatment of the red sandstone in the actual engineering of a good reference. Liu et al [14] investigated the disintegration characteristics of red clay at different water contents and temperatures and found that the amount of disintegration decreased with increasing water content. Some scholars through the loess submerged disintegration test, found that the disintegration process of loess can be divided into three wider stages of wetting, softening and settling, explored the relationship between disintegration and influencing factors such as water content, temperature, salinity, etc., and discussed the effect of water content on the kinetic stability of loess [24,25,10,36].…”