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The Study on Strength Deformation and Structural Characteres of Red Clay in Hainan

Author: LiuHongLin
Tutor: HanJianGang
School: Hainan University
Course: Geotechnical Engineering
Keywords: Red earth Consolidation deformation Strength properties Structural
CLC: TU44
Type: Master's thesis
Year: 2010
Downloads: 75
Quote: 0
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Abstract


Laterite more widely distributed in China , which is in the hot and humid weather conditions carbonate or rock containing rich Fe and Al oxides formed after long-term physical, chemical weathering and reddening of a brownish red, brown-red , purple and brown yellow color has a low density and high strength and low compression special soil . With the deepening and expansion of a comprehensive study of the red clay , red clay with the characteristics no longer confined to the initial discovery of carbonate rock weathering products . Not only basalt, granite, clastic rocks , siltstone , are likely formed by weathering and carbonate weathered red soil laterite similar characteristics , the study of clay content compared with the initial broaden . Hainan laterite , red clay Research , discusses the causes of the laterite material composition and Hainan Island unique geological , climatic environment . Different states on clay consolidation test and triaxial compression test, according to the test results , and analyzed the following results : (1 ) undisturbed red clay overconsolidated clays in the experiments , when the pressure is less than the structural strength , the presence of its structural strength , deformation less than reshape the soil samples , the destruction of the state of brittle failure , stress - strain relationship for the processing of softening ; the laterite structure was destroyed when the pressure is greater than the structural strength , stress - strain relationship for the work-hardened . Remodeling laterite consolidation pressure at all levels , stress - strain relationship work-hardened . ( 2 ) triaxial test data based on water content of omega Hainan clay shear strength index sticky cohesion c and angle of internal friction φ , summed up as a function of water content w and cohesion, c relationship . (3) on the basis of the consolidation tests and triaxial tests on the red clay of structural discussed , laterite structural stress and strain quantitative analysis . (4 ) will consider the introduction of the integrated structure potential structural constitutive model to study the Hainan laterite validate this constitutive relation can effectively reflect the stress-strain law of Hainan laterite used in the experiment , the establishment of Hainan laterite structured this constitutive relations .

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Various types of soil and foundation
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