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Soil Stabilization Using Lime: Advantages, Disadvantages and Proposing a Potential Alternative

2014; Maxwell Scientific Publications; Volume: 8; Issue: 4 Linguagem: Inglês

10.19026/rjaset.8.1000

2040-7467

Ibtehaj Taha Jawad, Mohd Raihan Taha, Zaid Hameed Majeed, Tanveer Ahmed Khan,

Concrete and Cement Materials Research

This study is an overview of previous studies on lime (quick and hydrated) -treated soil. Lime is the oldest traditional stabilizer used for soil stabilization. The mechanism of soil-lime treatment involves cation exchange, which leads to the flocculation and agglomeration of soil particles. The high pH environment then causes a pozzolanic reaction between the free Ca +2 cations and the dissolved silica and alumina. Lime-treated soil effectively increases the strength, durability and workability of the soil. Such treatment also improves soil compressibility. A fluctuation behavior was observed on the influence of lime on soil permeability. However, the factors affecting the permeability of the soil-lime mixture should be extensively studied. Nonetheless, lime treatment has a number of inherent disadvantages, such as carbonation, sulfate attack and environment impact. Magnesium oxide/hydroxide are thus proposed as a suitable alternative stabilizer to overcome at least some of the disadvantages of using lime in soil stabilization.