Abstract
To investigate annual fluctuation of internal temperature and humidity of concrete members, we measured and analyzed them in outer wall and balcony slab in a 46-year-old RC building. The results showed that annual average of internal temperature is higher by 1~6 degree C than air temperature mainly because of solar radiation, which leads to decline of water content and average internal humidity. Increase of internal temperature is also responsible for temporary increase of internal humidity. Comparison of the humidity fluctuation at the same range of internal temperature can enable to evaluate fluctuation of water content.
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