Effect of quick lime on physicochemical properties of clay soil

Abstract

Abstract. Clay soils are known for their water sensitivity, which causes irreparable damage to any structure built on this type of soil. In order to avoid such problem, it is necessary to use various improvement and stabilization methods such as treatment with lime. This process has been used successfully in the field for decades. The addition of lime generates various physicochemical reactions within the soil such as cation exchange and pozzolanic reactions which are largely responsible for the improvement of the soil in question. This paper presents a study concerning the variation of physicochemical properties of clayey soil with the addition of quicklime at different percentages. Experiments were performed on two clayey soils (CL type) in order to investigate the influence of quicklime on Atterberg limits and pH. These tests were carried out in an attempt to study and follow the development and progression of various reactions occurred within the soil with various lime percentages. The results show that the addition of quicklime causes a significant improvement in soil properties by reducing plasticity and thereby improves the soil workability. It can also be found that the addition of lime increase pH of soil, which allow activating pozzolanic reactions who tend to stabilize the soil in question by formation of cementitious compounds. Finally, the pH can be considered as a relevant parameter who allows a better understanding of the reactions that occur in the soil matrix.

Replacement of hydroxyapatite from chicken eggshell waste for ceramic properties improvement

“…The surface morphology tends to be having higher roughness after the addition of hydroxyapatite as seen in the top row of Figure 5A. The presence of Ca 2+ from hydroxyapatite results in the clay particles agglomeration to become larger aggregates 30–32 . This phenomenon can be explained as follows: the positive charge of Ca 2+ diffuses to insert between the negative charges of clay particles causing decrease of the repulsive electrostatic force between the clay particles.…”

Effects of High Plasticity and Expansive Clay Stabilization with Lime on UCS Testing in Several Conditions

“…Lime is used to stabilize a variety of materials including weakly alkaline soils, turning them into "workbenches" or subbases; and with a marginal granular base material, namely gravel-clay, "dirty" gravel, to form a strong and high-quality base layer (Guyer, 2011). Several studies on the mechanism of the basic lime-clay reaction have been reported in the literature (Balaji et al, 2018;Beetham et al, 2015;Bessaim et al, 2018;Devi et al, 2018) Efforts to improve and stabilize soil properties can be carried out with various techniques, including addition of lime (Ali & Mohamed, 2017;Bell, 1996;Garzón et al, 2016). One of the commonly used techniques is the remediation method, because of its facilities and economic appearance, on the other hand, because of its effectiveness in obtaining engineering materials that have superior properties.…”

Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution

“…Limited by regional soil conditions, many studies focus on expansive soils and clays. However, the application of lime-solidified loess is also extensive, and some studies mainly highlight the mechanical and physical properties of solidified soil [6,[19][20][21]. However, loess has restricted regional characteristics and is quite different from expansive soil in terms of engineering characteristics.…”