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Title

The Effect of Rice Husk Ash on Mechanical Properties of Clayey Soils Stabilized with Lime in the Presence of Sulphate

Year: 1396
COI: JR_JEG-11-3_007
Language: EnglishView: 170
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Authors

Mohammad Hossin Bazyar - Department of Civil Engineering, Faculty of Engineering, Yasooj Univeersity
Mostafa Ebrahimi - Department of Civil Engineering, Faculty of Engineering, Yasooj Univeersity
Mehdi Zamani Lenjani - Department of Civil Engineering, Faculty of Engineering, Yasooj Univeersity
Masoud Makarchian - Department of Civil Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan

Abstract:

Geotechnical engineers, in many cases face with low strength or high swelling potential of clayey soils. Stabilization methods are used to improve the mechanical properties of this type of soils. Lime and cement are the most popular materials used in chemical stabilization of clayey soils. If sulphate exists in the stabilized clayey soil with lime, or if soil is exposed to sulphates, problems such as strength reduction and swelling will occur. Reuse of industrial residual such as Rice Husk Ash (RHA) can be beneficial from the economy point of view. RHA includes a proper amount of silica with high specific surface area which is very suitable for activating the reaction between the soil and lime. In this paper, chemical stabilization of gypsum clays using lime and RHA is addressed Sulphates exist in the constitution of the soil. Unconfined compression strength and swelling potentials of the stabilized soil are evaluated. The results of this study indicate that RHA has positive impacts on improving mechanical properties of the gypsum clays stabilized with lime. From the view point of strength and swelling characteristics, and economy, addition of 6–8% lime and 8-10% RHA as an optimum amount is recommended.

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This Paper COI Code is JR_JEG-11-3_007. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/791449/

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Bazyar, Mohammad Hossin and Ebrahimi, Mostafa and Zamani Lenjani, Mehdi and Makarchian, Masoud,1396,The Effect of Rice Husk Ash on Mechanical Properties of Clayey Soils Stabilized with Lime in the Presence of Sulphate,https://civilica.com/doc/791449

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