›› 2012, Vol. 33 ›› Issue (7): 2048-2054.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of influence of environmental factors on geogrid creep property

DING Jin-hua1, 2, TONG Jun2, 3, ZHANG Jing2, ZHOU Wu-hua2   

  1. 1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China; 2. Key Laboratory of Geotechnical Mechanics & Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China; 3. Department of Civil Engineering, Kyushu University, Fukuoka 8190395, Japan
  • Received:2012-04-16 Online:2012-07-11 Published:2012-07-13

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Abstract: A series of creep tests of high-density polyethylene uniaxial geogrids are performed under different environmental conditions, including the stress level, temperature, chemical reaction, installation damage and confined constraint in sand. The results show that: with the higher temperature or stress level, the creep of geogrid is bigger and the creep rate is faster; the creep critical stress level of uniaxial geogrid is unsuitable to exceed 40% under common conditions; chemical reaction can lead the creep deformation to increase about 10%; the influence of installation damage is obvious; the creep property under confined constraint in sand is related with the stress state of geogrid; the filling material and loading can reduce the creep deformation of geogrid greatly.

Key words: geogrid, creep, stress level, environmental factor, confined constraint, installation damage

CLC Number: 

  • TU 472.3
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