Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第V部門

維持・管理 (2)/エコ・緑化コンクリート

Thu. Sep 5, 2019 12:40 PM - 2:10 PM V-1 (幸町北4号館 433講義室)

座長:高橋 駿人(北海道大学)

[V-372] Evaluation of stability for self healing concrete with recycled materials

*李 春鶴1、町浦 将太2、中島 直輝1 (1. 宮崎大学、2. ショーボンド建設(株))

Keywords:RECYCLED MATERIALS, SELF HEALING CONCRETE, STABILITY, ETTRINGITE

In this study, the concrete to which composite recycled materials was added self-healing concrete. The water flow rate was determined for estimation of self healing. It was confirmed that self healing occurred by decresing the water flow rate. X-ray diffication and SEM observation were performed to identify ettringite. Needle-like crystals of ettringite were confirmed with increased the addition rate of composite recycled materials. The reason for the decrease in water flow rate was considered to be a change due to ettringite at the cracked part.

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