マルコフ連鎖モデルと現位置非破壊試験を組み合わせた外壁仕上材料の経年劣化と躯体保護効果の評価に向けた基礎的研究

摘要

1）透気試験において，コンクリートの内部圧力は曲線状に分布することが確認された。2）原位置非破壊表層透気試験は，試験対象の空隙量に関連する物性を評価している。3）仕上材料の中性化抵抗性は，仕上げ厚さと透気係数によって評価できることを促進中性化試験により確認し，実構造物においても適用できることを示した。%This study aims to clarify a relationship between the degradation of exterior finishing and carbonation progress of concrete. The degradations of exterior finishing of reinforced concrete multrfamily dwellings were investigated from the view point of cracks of coating systems and air permeability of finished concrete. The progress of the cracks was simulated based on Markov Chain Model. On the other hand, good relations were found on the carbonation progress, air permeability of concrete and cracks of finishing. Based on these findings, authors proposed a service life of the finishing from the view point of protection of concrete against carbonation..