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Journal of Jilin University(Earth Science Edition). 2014, (06) Core

Suitable Compaction Moment and Strength Recovery Properties of Remodeled Stabilized Dredged Soil from Dianchi LakeChinese Full Text

Gui Yue;Yu Zhihua;Liu Haiming;Ding Zude;Zhang Qing;Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology;

Abstract: To determine the suitable compaction moment and strength recovery properties of remodeled stabilized dredged soil,the unconfined compression test and direct shear test were conducted.The mechanism of strength reduction and recovery were analyzed in term of cohesive strength and internal frictional angle of stabilized dredged soil and remodeled stabilized dredged soil.And three factors including the curing period before remolded,the curing period after remolded,cement content impact on the strength of stabilized dredged soil and remodeled stabilized dredged soil were explored.Test results show that the curing period before remolded causes a significant impact on the strength reduction of remodeled stabilized dredged material.The strength reduction ratio increased with the curing period before remolded increased.And the strength reduction ratio increased with the cementcontent increased too.After curing,the unconfined strength of remodeled stabilized dredged soil with small cement content recover well,however the large one was difficult to recover to close to the level of stabilized dredged soil.And the curing period extends are adverse to the strength recovery of remodeled stabilized dredged soil.To conclude,the stabilized dredged soil with small cement content may be remodeled sooner rather than later,however,the large one can be prolong remodeled time properly.
Keywords：

dredged sludge; stabilization; compaction moment; strength reduction; strength recovery;

  • DOI：

    10.13278/j.cnki.jjuese.201406201

  • Series：

  • Subject：

  • Classification Code：

    TU447;TU411

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