A FUNDAMENTAL STUDY ON DEVELOPMENT OF RAPID WATER PERMEABILITY TEST FOR NEAR-SURFACE LAYER OF CONCRETE

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  • コンクリート表層部に着目した簡易透水試験法の開発に関する基礎的研究

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The applicability of new in-situ testing method for permeability of surface layer of concrete, whose original concept has been proposed by authors using water pressure originated from rubber tube, is examined.<br>In order to make clear a basic concept of this “rapid water permeability rest” method, the water permeation from the test hole was presented by a basic equation concerning pressure diffusion. The effects of factors relating to the water permeation were summarized using the diffusivity estimated from the basic diffusion equation, and the mutual relationship between the diffusivity in the estimation and that obtained in conventional in-door water permeability test, was examined.<br>In conclusion, this method was judged promising for the in-situ test to assess the water permeability and the simplified in-door test to assess the diffusivity in the surface layer of concrete.

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