Effect of carbon dioxide curing on strength development of cement mortar

Ming Gin Lee, Wei Chien Wang, Yishuo Huang, Yu Min Su, Jiang Quanzhou

研究成果: 書貢獻/報告類型會議論文篇章同行評審

3 引文 斯高帕斯(Scopus)

摘要

This study was conducted to assess the acceleration of strength development by CO2 curing and to evaluate the strength and microstructure of two cement mortars. Three curing pressures (1, 5, 8 bars), three curing time (20, 120, 180 minutes) and four CO2 concentration (0%, 25%, 50% and 100%) were used in this investigation. Two mortar specimens are made with Type ? Portland cement and oil-well cement. After the CO2 curing duration and demolding, the mortar samples were assessed through the mass gain, the compressive strength, the pressure drop, the temperature rise in the curing chamber, and the microstructure characteristics. The performance of the CO2 cured mortars was found through the measurement of pressure drop, temperature rise, strength development, mass gain and carbonation. In general, higher CO2 concentration, longer carbonation time, higher CO2 pressure could increase the compressive strength of the mortar and promote more CO2 absorption. The better results obtained from this study are the Type 1 cement mortars curing three hours under 5-bar pressure with 100% CO2 concentration using one-time supply method. The three-hour mortar samples had a high percent strength development. The increasing of CO2 concentration results in higher carbonation degree of mortar, more mass gain, and a stiffer and denser material.

原文???core.languages.en_GB???
主出版物標題Advanced Materials and Engineering Materials VI - 6th ICAMEM
編輯Katsuyuki Kida, Koshiro Mizobe
發行者Trans Tech Publications Ltd
頁面323-327
頁數5
ISBN(列印)9783035711837
DOIs
出版狀態已出版 - 2017
事件6th International Conference of Advanced Materials and Engineering Materials, ICAMEM 2017 - Singapore, Singapore
持續時間: 11 3月 201712 3月 2017

出版系列

名字Key Engineering Materials
748 KEM
ISSN(列印)1013-9826
ISSN(電子)1662-9795

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???event.eventtypes.event.conference???6th International Conference of Advanced Materials and Engineering Materials, ICAMEM 2017
國家/地區Singapore
城市Singapore
期間11/03/1712/03/17

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