Title : FUNDAMENTAL STUDY ON CARBONATION SUPPRESSIVE EFFECT OF FINISH MATERIALS FOR CONCRETE
Authors : K. Niwano (1), K. Imamoto (1) and H. Jinnai (2)
Publication : 13th – 16th February 2013
Volume :
Pages : 8-Jan
Price : 250
Abstract : It is often observed that the use of finishing materials can decrease the cover depth for reinforcing bars in concrete due to the suppressive effect of concrete carbonation. Though there are many finishing materials available, the effect of decreasing the cover depth for the reinforcing bar has not been studied because no clear evaluation methods have been published yet. Therefore, the authors measured the repression effect of carbonation depth of concrete using various finishing materials, and evaluated the effect with non-destructive in-situ air permeability test. Accelerated testing of carbonation was adopted in this study. A relationship between air permeability coefficient of surface layer and the carbonation progress of concrete was investigated. Through this research, authors propose an appropriate way to evaluate the air permeability of concrete.