抄録
Carbonation rate in concrete is strongly dependent on concrete itself such as pore structure, surface finishing and execution condition, and also on environmental conditions such as carbon dioxide gas concentration, temperature and relative humidity. In this paper, the influence of local climate condition on carbonation rate of concrete was analyzed. The local climate condition was determined on the basis of daily changes of temperature, relative humidity, wind speed, and duration of sunshine, raining and snowing which were recorded in SDP date offered by Meteorological Agency during 1976 and 1990.
As a result, carbonation rate in concrete is changed from region to region dependently on the local climate condition. Especially it was recognized that raining and snowing strongly influence the carbonation rate. Consequently not only the atmospheric environmental condition but also mesoscopic and microscopic environmental conditions need to be taken into consideration when the durability performance of concrete structures is estimated.
