Rock and Soil Mechanics ›› 2019, Vol. 40 ›› Issue (6): 2183-2191.doi: 10.16285/j.rsm.2018.0337

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on selection of anchor slurry and performance of mixed quick lime in earthen sites

CUI Kai1, 2, HUANG Jing-jing1, CHEN Wen-wu2, WANG Dong-hua1, HAN Ning2   

  1. 1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China of Ministry of Education, Lanzhou University, Lanzhou, Gansu 730000, China
  • Received:2018-06-26 Online:2019-06-11 Published:2019-06-22
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (41562015), the National Science and Technology Pillar Program during the 12th Five-Year Plan Period of China(2014BAK16B02) and the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(2013IRT13068).

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Abstract: The incompatibility and the lag of type development of anchorage slurry have become the key problems restricting the development of anchorage technology in earthen sites. To improve the compatibility and enrich the types of anchorage slurry, the fluidity of SH-(CaO+C+F) anchorage slurry composed of traditional quicklime, clay and fly ash was tested, so did the physical and mechanical properties of stones. During the tests, the mass concentration of SH binder was 1.5%. Then, the anchorage slurry with water cement ratio of 0.5 was selected as the preferred slurry. Based on this, the in-situ anchorage test was performed in which six different kinds of anchorage systems composed of the selected slurry and two different kinds of anchorage bolts were tested at three variable lengths. The in-situ test aimed to obtain and analyze the failure modes, ultimate load and ultimate load-displacement characteristics and the distribution characteristics of stress along anchorage depth of six kinds of anchorage systems. Finally, compatibility and anchorage performance of this type of anchorage slurry were compared and evaluated through analysis of anchorage mechanics mechanism. The research results provided a reference for the selection of anchorage slurry diversity of earthen sites.

Key words: earthen sites, quick lime, workability, compatibility, anchorage performance

CLC Number: 

  • TU411.2
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