Application of pozzolan using an internal curing agent supplying alkalis

• Project/Area Number: 15K14015
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Hiroshima University
• Principal Investigator: KAWAI KENJI 広島大学, 工学研究院, 教授 (90224716)
• Project Period (FY): 2015-04-01 – 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: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 土木材料 / フライアッシュ / ポゾラン活性 / アルカリ刺激

Outline of Final Research Achievements

In this study, the effectiveness of porous ceramic waste coarse aggregate as an alkali supply agent to accelerate pozzolanic reactivity of fly ash was investigated based on the fact that porous ceramic waste coarse aggregate can be used as an internal curing agent. Some results showed that alkali supply through the porous ceramic waste coarse aggregate accelerates pozzolanic reaction of fly ash, however the compressive strength of concrete containing fly ash could not be improved by alkali supply. It can be said that acceleration of pozzolanic reaction of fly ash by alkali supplied from porous ceramic waste coarse aggregate can be confirmed to a limited extent.