Effect of polypropylene fibre and lime admixture on engineering properties of clayey soil

Behaviour and mineralogy changes in lime-treated expansive soil at 20 °C

This report presents information on the characterization of cementitiously stabilized layers and the properties that influence pavement performance. It also contains recommended performance-related procedures for characterizing these layers and performance-prediction models for incorporation into the mechanistic–empirical pavement analysis methods. Individual chapters highlight pavement distresses of hot-mix asphalt pavements and concrete pavements, laboratory tests and model development, and model calibration. The material contained in the report will be of immediate interest to state materials, pavement, and construction engineers and others involved in the different aspects of pavement design and construction.

Characterization of Cementitiously Stabilized Layers for Use in Pavement Design and Analysis

Geosynthetic-encased stone columns: Numerical evaluation

Clayey soils are usually stiff when they are dry and give up their stiffness as they become saturated. Soft clays are associated with low compressive strength and excessive settlement. This reduction in strength due to moisture leads to severe damages to buildings and foundations. The soil behavior can be a challenge to the designer build infrastructure plans to on clay deposits. The damage due to the expansive soils every year is expected to be $1 billion in the USA, £150 million in the UK, and many billions of pounds worldwide. The damages associated with expansive soils are not because of the lack of inadequate engineering solutions but to the failure to identify the existence and magnitude of expansion of these soils in the early stage of project planning. One of the methods for soil improvement is that the problematic soil is replaced by suitable soil. The high cost involved in this method has led researchers to identify alternative methods, and soil stabilization with different additives is one of those methods. Recently, modern scientific techniques of soil stabilization are on offer for this purpose. Stabilized soil is a composite material that is obtained from the combination and optimization of properties of constituent materials. Adding cementing agents such as lime, cement and industrial byproducts like fly ash and slag, with soil results in improved geotechnical properties. However, during the past few decades, a number of cases have been reported where sulfate-rich soils stabilized by cement or lime underwent a significant amount of heave leading to pavement failure. This research paper addressed the some fundamental and success soil improvement that used in civil engineering field.

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Fundamentals of soil stabilization

Sulphate attack and ettringite formation in the lime and cement stabilized marine clays

Compressibility behaviour of lime-treated marine clay

The microstructure of lime-stabilized marine clay

Fabric and mineralogical studies on lime treated marine clays

Weak marine clay deposits of low strength and high compressibility are located in many coastal and offshore areas of the world. There are several foundation problems encountered in these weak marine soils. The application of lime to improve the engineering behaviour of finegrained soils is not new. The present investigation explains the lime-induced changes on the strength characteristics of different treated systems in a marine environment. The formation of various new reaction products has been identified using X-ray diffraction and scanning electron microscopy techniques. The test results indicate an improvement in soil strength by eight to ten times that of untreated soil except for the quicklime-sodium sulphate system. This aspect encourages the application of both lime column and lime injection techniques to improve the engineering behaviour of marine clays. Dans le monde, des depots d'argile marine a faible resistance et a forte compressibilite sont situes sur de nombreuses zones cotieres et offsho...

G. Rajasekaran

Papers

Sulphate attack and ettringite formation in the lime and cement stabilized marine clays

Compressibility behaviour of lime-treated marine clay

The microstructure of lime-stabilized marine clay

Fabric and mineralogical studies on lime treated marine clays

Strength characteristics of lime-treated marine clay