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Performance Study of Rammed Aggregate Pier as a Ground Improvement Technique in Soft Ground

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dc.contributor.advisor Alamgir, Prof. Dr. Muhammed
dc.contributor.author Hossain, Md. Julfikar
dc.date.accessioned 2018-08-28T06:59:58Z
dc.date.available 2018-08-28T06:59:58Z
dc.date.copyright 2007
dc.date.issued 2007-06
dc.identifier.other ID 0401501
dc.identifier.uri http://hdl.handle.net/20.500.12228/410
dc.description This thesis is submitted to the Department of Civil Engineering, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Civil Engineering, June 2007. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 112-117).
dc.description.abstract The development of modern foundation practices, namely ground improvement techniques, has been proved to be viable both the technically and economically for the improvement of marginal sites and to overcome the limitations of conventional foundation systems. Amongst the various ground improvement techniques for improving soft ground conditions, Rammed Aggregate Pier (RAP) such as Geopier is considered as one of the most versatile and innovative ground improvement method than the other methods. The performance of Rammed Aggregate Pier has yet not been examined in soft ground condition of Bangladesh at field level. This study is concerned with the performance of Rammed Aggregate Pier in soft ground at a selected site of South-West region of Bangladesh i.e. KUET (Khulna University of Engineering & Technology) campus. The ground at the site consists of soft fine-grained soil up to great depth with a layer of organic soils at 4.5 to 9m depth from the existing ground surface. The Rammed Aggregate Piers were installed by rammed method with locally fabricated equipments. This installation method is easier and cost effective than other counterpart. Rammed Aggregate Pier of cylindrical shape having 0.75m diameter and 3.4m length were installed manually in three arrangements as single, double and group. A uniform mixture of local sand and brick aggregates at the proportion of 1:2 was used as the granular materials maintaining saturated surface dry condition. The granular materials were poured into the excavated hole in layers and hence compacted adequately by using a hammer of 108kg and a free fall height of 600mm. Load tests on full-size isolated square footing of 1.68x1.68m resting at a depth of 0.75m from the existing ground surface were conducted on both the natural and improved ground by using the method similar to pile load test. The field measurement shows that the ultimate bearing capacity of footing resting on single, double and group RAP treated ground can be increased by 1.5, 1.8 and 1.96 times, respectively, comparing to that of natural ground. Field investigation reveals that the RAP made-up of locally available granular materials and the employed installation technique can be used successfully as a suitable ground improvement method to improve the bearing capacity of such soft ground. en_US
dc.description.statementofresponsibility Md. Julfikar Hossain
dc.format.extent 128 pages
dc.language.iso en_US en_US
dc.publisher Khulna University of Engineering & Technology (KUET), Khulna, Bangladesh. en_US
dc.rights Khulna University of Engineering & Technology (KUET) thesis/dissertation/internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
dc.subject Ground Improvement Technique en_US
dc.subject Soft Ground en_US
dc.subject Rammed Aggregate Pier (RAP) en_US
dc.title Performance Study of Rammed Aggregate Pier as a Ground Improvement Technique in Soft Ground en_US
dc.type Thesis en_US
dc.description.degree Master of Science in Civil Engineering
dc.contributor.department Department of Civil Engineering


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