Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第V部門

特殊コンクリート

Thu. Sep 5, 2019 12:40 PM - 2:10 PM V-5 (幸町北5号館 第4会議室)

座長:宇野 洋志城(佐藤工業)

[V-517] Influence of materials used and vibration compaction time on fullness and hardning characterrstics immediately demoldable concrete

*鹿江 史浩1、橋本 紳一郎2、田中 孝一3、山本 康雄3、小嶺 啓藏3、伊達 重之4 (1. 福岡大学、2. 千葉工業大学、3. ヤマウ、4. 東海大学)

Keywords:Immediate release concrete products, Volume rate of fine aggregate, Vibration compaction time, Fulfillment, Compressive strength, Surface quality

this experiment, among the production conditions, the effect of vibration compaction time on the fullness of the immediate release concrete and the characteristics after hardening was examined. As a result, the fullness and post-hardening characteristics differ depending on the type and physical properties of the fine aggregate used, and particularly when using a low-performance fine aggregate, it is confirmed that the filling rate and the compressive strength decrease. did. However, by setting an appropriate vibration compaction time, the filling property was improved even when using a fine aggregate with a low performance rate, and the target strength was satisfied.

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