抄録
Permeability of cover concrete strongly affects the durability performance of reinforced concrete structures. This paper deals with a single-chamber method to evaluate the air-permeability of the cover concrete. The original methods have been developed by Schonlin and Hilsdorf in 1987 and by Berissi et al. also in 1987, respectively. In Japan, over 400 thousand RC buildings are newly constructed per year. Hence, authors intend to develop a simplified air-permeability test method which would be suitable to the diagnosis by contractors (not expert engineers). A correlation between the air permeability indexes (A.P.I.) of the proposed method and the air permeability (K_<cembureau>) of RILEM TC PCD method (Cembureau method) was quite good. In this study, the air-permeable area and variances of the full sized concrete walls from the view point of air-permeability were also experimentally investigated.
