Study on effect of coarse Aggregate to shrinkage of concrete in the drying process

• Project/Area Number: 26420436
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: UMEHARA HIDETAKA 名古屋工業大学, 工学(系)研究科(研究院), 教授 (70151933)
• Co-Investigator(Kenkyū-buntansha): 吉田 亮 名古屋工業大学, 工学(系)研究科(研究院), 助教 (40548575)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: コンクリート / 粗骨材 / 乾燥収縮 / 乾燥収縮ひずみ / ヤング係数

Outline of Final Research Achievements

It becomes clear that drying shrinkage of concrete is affected heavily by shrinkage of coarse aggregate itself due to water diffusion. Furthermore it becomes clear that the adhesion between coarse aggregate and mortar and Young’s modulus of coarse aggregate affect heavily to compressive strength because of large stress acting during compressive strength test, but they don’t affect so much to strain of drying shrinkage because of small stress acting during drying shrinkage test.

Research Products

• [Journal Article] 粗骨材の排水挙動がコンクリートの乾燥収縮に与える影響 (2014)
  • Author(s): 小幡雄一郎、吉田 亮、梅原秀哲
  • Journal Title: 土木学会論文集E2（材料・コンクリート構造） Volume: V-70 No.2
  • NAID: 130004962069
  • Peer Reviewed
• [Presentation] 粗骨材の吸水性状、ヤング係数および付着性状がコンクリートの乾燥収縮に与える影響 (2016)
  • Author(s): 青山祥梧、飯田憲佳、梅原秀哲、吉田 亮
  • Organizer: 土木学会全国大会第71回年次学術講演会
  • Place of Presentation: 東北大学
  • Year and Date: 2016-09-07
• [Presentation] 粗骨材の水分逸散性状がコンクリートの乾燥収縮に及ぼす影響に関する研究 (2016)
  • Author(s): 青山祥梧、飯田憲佳、梅原秀哲、吉田 亮
  • Organizer: 土木学会中部支部研究発表会
  • Place of Presentation: 豊田工業高等専門学校
  • Year and Date: 2016-03-04
• [Presentation] 粗骨材の形状およびヤング係数がコンクリートの乾燥収縮に及ぼす影響に関する研究 (2016)
  • Author(s): 飯田憲佳、青山祥梧、梅原秀哲、吉田 亮
  • Organizer: 土木学会中部支部研究発表会
  • Place of Presentation: 豊田工業高等専門学校
  • Year and Date: 2016-03-04
• [Presentation] 粗骨材種がコンクリートの乾燥収縮に及ぼす影響に関する研究 (2015)
  • Author(s): 加藤清孝、梅原秀哲、吉田 亮、小幡雄一郎
  • Organizer: 土木学会全国大会第70回年次学術講演会
  • Place of Presentation: 岡山大学
  • Year and Date: 2015-09-17