The Impact of Mineral Salts and Milk of Lime on Physicochemical Parameters and Swelling :( Case of Clays of Tlemcen Algeria)

Zeyneb Belabbaci,Sidi Mohamed Aissa Mamoune,Abdelmalek Bekkouche

doi:10.5923/j.jce.20120205.01

Abstract

Clay soil is the foundation for many buildings. So me families have the characteristic to be swelling or shrink. However, construction on this type of soil requires a good companion for the recognition of identification and characterizat ion of their swelling potential. In this work we are interested by two aspects: -The first is on the tests recommended for the identification of four expansive soils in the region of Tlemcen (Algeria); -The second is to assess the influence of the addit ion of milk of lime and mineral salts (KCl Potassium Chloride, Magnesium Ch loride MgCl2) at different percentages on the physico-chemical parameters, the swelling potential of these soils fro m co rrelations approximate estimates. The results obtained show that stabilization by the addition of milk of lime mod ifies the physico-chemical characteristics of soil and the results are quite satisfactory in significantly reducing the phenomena of swelling, as regards stabiliztion with milk of lime we notethat the salt concentration has little influence on the potential of swelling and it differs fro m one another salt.

Highlights

Excessive heave, settlement, lo w shear strength, and internal erosion of soils can cause damage to engineering structures
Some attempts have shown that the addition of a material such as salts or the milk of lime appearance modifies the physico-chemical para meters, and reduced the swelling in a
The apex tetrahedron that is not in the plan is shared an octahedron AlO6 (Figure 2). It is the combination of tetrahedral layers (T) and octahedral layers (O) wh ich is the justification of the crystal lattice each of clay

Summary

Introduction

Settlement, lo w shear strength, and internal erosion of soils can cause damage to engineering structures. In order to overcome these difficu lties and to prevent structural damages during the site selection and/or construction stages, engineers have developed several techniques. They avoid potential soil problems by selecting an alternative site or by remov ing the undesirable soil and replacing it with desirable soil. The last approach, improvement or stabilizat ion of a soil, is becoming the mo re attractive method for the soil engineers. Stabilization of clay soils using lime, cement, salts has long been used to improve the workab ility and mechanical characteristics of the soils in geotechnical engineering[5]. Some attempts have shown that the addition of a material such as salts or the milk of lime appearance modifies the physico-chemical para meters, and reduced the swelling in a

Localization of the Site and Geotechnical Identification

Classification of Expansive Soils

Correlation Between Swelling and Physico-Chemical Parameters

Action of Mineral Salts on the Physicochemical Parameters of Studied Soils

Findings

Conclusions