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Use of reinforced soil foundation (RSF) to support shallow foundation : technical summary report, November 2008.
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  • Alternative Title:
    LTRC technical summary report, 423
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  • Edition:
    Technical summary report; Nov. 2008.
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  • Abstract:
    The presence of a weak soil supporting structural foundations results in low load bearing capacity and

    excessive settlements, which can cause structural damage, reduction in durability, and/or deterioration in

    performance level. Conventional treatment methods replace part of the weak cohesive soil with an

    adequately thick layer of stronger granular fill, increase the dimensions of the footing, or combine both

    methods. However, an alternative and more economical solution uses geosynthetics to reinforce soils, which

    can be done by either reinforcing cohesive soil directly or replacing poor soils with stronger granular fill in

    combination with the inclusion of geosynthetics. The resulting composite zone (reinforced soil mass) will

    improve the load carrying capacity of the footing and provide better pressure distribution on top of

    underlying weak soils, reducing associated settlements.

    Benefits of including reinforcements within soil mass to increase the bearing capacity and reduce the

    settlement of soil foundation have been widely recognized. Many hypotheses have been postulated about the

    failure mode of reinforced soil foundation (RSF). However, the failure mechanism of reinforcement is still

    not fully understood in RSF as compared to other reinforced soil applications. Therefore, it is important to

    investigate the reinforcement mechanism of reinforcing soils for foundation applications.

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