JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2013, Vol. 43 ›› Issue (5): 74-79.

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In situ testing and evaluation of the permeability of concrete

WANG Jia-chun1, ZHANG Zhao-hua2, SHU Ning3   

  1. 1. Civil Engineering Department, Xiamen Technology University, Xiamen 361024, China;
    2. Engineering Technology School，Jimei University, Xiamen 361021, China;
     3. Jiehang Building Testing Company of Xiamen, Xiamen 361006, China
  • Received:2013-01-15 Online:2013-10-20 Published:2013-01-15
  • Supported by:

    中国博士后基金资助项目(20060400284);福建省自然科学基金资助项目(2008J0171);厦门市科技计划资助项目(3502Z20113033)

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Abstract:

With Permit ion migration experiments and concrete surface resistivity test the chloride ion diffusion coefficient and the concrete surface resistivity of the five concretes were measured and the relation between in situ results and ASTM C1202 electric flux for 6h in the laboratory were analyzed. The mathematical relationship between a protective layer of concrete chloride ion diffusion coefficient and surface resistivity of concrete was established, and the service life of reinforced concrete beams was calculated by in situ testing results under the marine environment. The results showed that there was good correlation between the concrete surface resistivity of the concrete cover, in the steady state the action of chloride diffusion coefficient and 6 h charge. Permit experiments and the concrete surface resistivity were tested and evaluated the permeability of the concrete in situ, and concrete surface resistivity was easy in engineering applications.

Key words:  concrete cover, chloride diffusion coefficient, concrete surface resistivity, in situ, permeability, durability

CLC Number: 

  • TU528
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