Optimization of Ionic Soil Stabilizer Dilution and Understanding the Mechanism in Red Clay Treatment

Abstract

Due to the insufficient understanding of the mechanism for soil strengthening by using Ionic Soil Stabilizer (ISS), the application of ISS in soil treatment is limited. In this paper, red clay samples were treated by using ISS and the effects were examined by the Atterberg test and uniaxial pressure test. In order to understand the mechanism, ISS dilution-based seepage test and ξ-potential test have been carried out. The results show that the ISS-Water mixture of 1 : 200 was the most effective ratio to reduce the plasticity index. The measurements indicate the thickness of the pair-electricity layer of adjacent clay layers and the repulsion force among soil particles is reduced, which in turn enhances the attraction force of the clay layers. This process strengthens the connection among the soil particles and thus increases the strength of the soil as detected by the experimental tests.

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

“…To put it another way, there are two possibilities here. After adding the ISS solution, the first surface contact of clay particles occurs; second, expansive clay's hydraulic permeability takes time to penetrate and react with most soil particles [14,35]. In direct shear tests, it was discovered that the shear strength and strength parameters (cohesion and angle of shear strength) of clayed soils had a time evolution similar to that of sandy soils, indicating that they had a similar time evolution [9].…”

“…In civil engineering, ISS reinforcement technology is a construction method that is inexpensive and simple to implement. Due to its versatility, soil mass reinforcement is common in many construction projects [14][15][16]. Materials used in traditional soil stabilization are ineffective because of their large footprints and lengthy construction times.…”

“…Materials used in traditional soil stabilization are ineffective because of their large footprints and lengthy construction times. This makes them unsuitable for both construction and social development [14,17]. New and appropriate ionic soil stabilization improved physical properties and reduced deformation in the experiment.…”

“…New and appropriate ionic soil stabilization improved physical properties and reduced deformation in the experiment. For soils with a higher proportion of clay than 25%, the ionic stabilizer is a liquid containing active ions that can improve soil strength [5,14,15,18,19]. It is possible to remove clay-water mixtures from the soil using an electrochemical process after being inserted and interacted with it.…”