BIAXIAL COMPRESSION CREEP TEST FOR GREENSCHIST CONSIDERING INFLUENCE OF SPECIMEN WIDTH
XIONG Liangxiao1，2，3，LI Tianbin2，YANG Linde3
(1. Faculty of Architectural，Civil Engineering and Environment，Ningbo University，Ningbo，Zhejiang 315211，China；2. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection，Chengdu University of Technology，Chengdu，Sichuan 610059，China；3. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China)
Abstract：The biaxial compression creep tests for greenschist were carried out. The creep test curves were fitted by six-component viscoelastic rheological model，and the influence of specimen width on creep deformation rule was studied. The results show that the axial and lateral strain will not always increase or decrease with increasing specimen width under the same stress level，but the axial creep strain rate of second creep stage will reduce all the time. The six-component viscoelastic rheological model curve and experimental curve approximately coincide with each other，which indicates that the rheological model is appropriate for determining the viscoelastic rheological parameters of greenschist.
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2013, Vol. 32 
