Identification of mechanism of micro-pore and pore water dominating viscosity of concrete

• Project/Area Number: 26630206
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Hosei University
• Principal Investigator: FUJIYAMA Chikako 法政大学, デザイン工学部, 准教授 (60613495)
• Co-Investigator(Kenkyū-buntansha): 溝渕 利明 法政大学, デザイン工学部, 教授 (60339504)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: ひずみ速度効果 / コンクリート / 細孔構造 / 液状水 / 遷移帯 / 凍結 / モルタル / セメントペースト / ひずみ速度依存性 / 自由水 / マイクロクラック

Outline of Final Research Achievements

The strain rate dependent responses of concrete mortar and cement paste cylinders those diameter is 50mm and hights is 100mm were investigated using uniaxial compression tests with high and low loading rates. The influence of pore structure and interfacial transition zone were focused on. Experimental results suggests that developing of capillary pore enhances strain rate effect. It is also suggested that the effect of ITZ is relatively small.

Research Products

• [Journal Article] Strain rate effect of cementitious materials influenced by existence of water and ITZ of aggregate (2017)
  • Author(s): Chikako Fujiyama and Ryojiro Kato
  • Journal Title: proceedings of The fib symposium 2017 of the International Federation for Structural Concrete Volume: --
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 若材齢および凍結させたモルタルおよびセメントペーストを用いた高速載荷試験 (2017)
  • Author(s): 加藤 遼二郎，藤山 知加子
  • Journal Title: 土木学会年次学術講演会講演概要集 Volume: 70
• [Journal Article] 凍結モルタル供試体の高速一軸圧縮載荷によるひずみ速度依存性発現メカニズムの検討 (2015)
  • Author(s): 藤山知加子，森野麻由，溝渕利明
  • Journal Title: コンクリート工学年次論文集 Volume: 37 Pages: 343-348
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 凍結モルタル供試体の高速一軸圧縮載荷によるひずみ速度依存性発現メカニズムの検討 (2015)
  • Author(s): 藤山 知加子*1・森野 麻由*2・溝渕 利明*3
  • Journal Title: コンクリート工学年次講演集 Volume: 37
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 若材齢および凍結させたモルタルおよびセメントペーストを用いた高速載荷試験 (2017)
  • Author(s): 加藤遼二郎
  • Organizer: 第７２回土木学会年次学術講演会
  • Place of Presentation: 九州大学伊都キャンパス（福岡県福岡市）
  • Year and Date: 2017-09-11
• [Presentation] Strain rate effect of cementitious materials influenced by existence of water and ITZ of aggregate (2017)
  • Author(s): Chikako Fujiyama
  • Organizer: The fib symposium 2017 of the International Federation for Structural Concrete
  • Place of Presentation: Maastricht, Netherland
  • Year and Date: 2017-06-12
  • Int'l Joint Research
• [Presentation] Strain Rate Effect in Frozen Mortar Subjected to Uniaxial Compression (2015)
  • Author(s): chkako fujiyama
  • Organizer: the 9th Asia Pacific Structural Engineering and Construction Conference & the 8th Asean Civil Engineering Conference (APSEC-ACEC 2015),
  • Place of Presentation: Kuala Lumpur （Malaysia）
  • Year and Date: 2015-11-08
• [Presentation] 凍結モルタル供試体の高速一軸圧縮載荷によるひずみ速度依存性発現メカニズムの検討 (2015)
  • Author(s): 藤山知加子
  • Organizer: コンクリート工学年次大会
  • Place of Presentation: 幕張メッセ（千葉県千葉市）
  • Year and Date: 2015-07-14 – 2015-07-16