Investigation of carbonation rate coefficient in mortars with blast furnace slag high content

Junya Nakamura, Takeshi Iyoda, Seishi Goto

研究成果: Conference article査読


Recently, in the cement industry, admixtures are used to reduce CO2 emissions. Ground granulated blast furnace slag fine powder (GGBFS) can be used as a high replacement for cement. On the other hand, the utilization of admixtures in concrete reduces the resistance to carbonation, this is verified by calculating the carbonation rate coefficient. There are two main methods for calculating the carbonation rate coefficient, the first method is experimental calculation and the second method is formula calculation based on prediction. In this study, we investigated the possibility of the hardened cement with high replacement rate of GGBFS linked with each other. A correlation was made with the two methods as the replacement rate of GGBFS was about 50%, but there was a tendency to shift with the high replacement rate of GGBFS. The reason for the shifting tendency was because of the progress of carbonation of calcium hydroxide and C-S-H which are hydrates that has been carbonated.

ジャーナルSustainable Construction Materials and Technologies
出版ステータスPublished - 2019
イベント5th International Conference on Sustainable Construction Materials and Technologies, SCMT 2019 - Kingston upon Thames, United Kingdom
継続期間: 2019 7月 142019 7月 17

ASJC Scopus subject areas

  • 土木構造工学
  • 建築および建設
  • 材料力学
  • 材料科学一般


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