ANALYSIS ON NATURAL CONCRETE CARBONATION OF ACTUAL BUILDINGS AND SUGGESTION FOR ITS PREDICTION METHOD

Abstract

 In this paper, we propose a method for estimating the carbonation rate of concrete that will be used in actual buildings and subjected to natural environments. This method is established on the basis of results of an accelerated carbonation test and by taking the following three steps:
 (1) Collection and analysis of past accelerated carbonation test data.
 (2) Understanding of the actual progress of concrete carbonation in existing buildings subjected to natural environments.
 (3) Proposal of a carbonation rate coefficient ratio (R) that correlates results of an accelerated carbonation test to results of a carbonation test in existing buildings.