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Research Paper | Civil Engineering | Sudan | Volume 3 Issue 6, June 2014 | Popularity: 6.8 / 10

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A Study on Mechanical Stabilization to Improve Marginal Base Materials In Khartoum

Magdi Zumrawi

Abstract: This study is aimed to improve the engineering properties of marginal base materials by mechanical stabilization. Currently used techniques for stabilization of marginal base materials are reviewed. This research studied the suitability and mechanical stabilization requirements of some selected granular materials as base construction materials. Six samples A to F collected from three sources of base materials in Khartoum state were subjected to preliminary tests (sieve analysis and Atterberg's limits) and strength tests (compaction; California bearing ratio (CBR) and Abrasion). Results of these tests classified the samples as marginal base materials. These samples were stabilized mechanically by the addition of gravels with sand or crushed stones with sand. The addition of sand from 10% to 15% to the samples caused a reduction in their plasticity indices. The CBR was improved by the addition of gravel from 15% to 20% or crushed stones from 12% to 15% to the samples. General conclusions are drawn with regard to success of recommended stabilization method.

Keywords: Marginal, base materials, mechanical stabilization, suitability, granular materials

Edition: Volume 3 Issue 6, June 2014

Pages: 1716 - 1721

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