RC建築工事におけるかぶり厚さ確保の信頼性向上を目指した施工管理方法の検討

抄録

This study aimed at developing quality controlling technology for securing concrete cover thickness in construction process. Toward this goal, field investigation for cover thickness measuring was conducted and obtained data were subjected to statistical analysis. Field study results showed smaller failure probability against required cover thickness is smaller than in literature. This appears partially due to high accuracy cover thickness measuring scheme adopting nondestructive electromagnetic testing apparatus, where data correction with steel arraignments on site. Furthermore, cover thickness data comparison before and after concrete placing process revealed that cover thickness tend to be larger after concrete placing process than before the process. This phenomenon can lead to proposing effective quality controlling action such that cover thickness is enlarged than required cover thickness before concrete placing to secure required cover thickness with high reliability.