Effect of carbon dioxide curing on strength development of cement mortar

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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationAdvanced Materials and Engineering Materials VI - 6th ICAMEM
EditorsKatsuyuki Kida, Koshiro Mizobe
PublisherTrans Tech Publications Ltd
Pages323-327
Number of pages5
ISBN (Print)9783035711837
DOIs
StatePublished - 2017
Event6th International Conference of Advanced Materials and Engineering Materials, ICAMEM 2017 - Singapore, Singapore
Duration: 11 Mar 201712 Mar 2017

Publication series

NameKey Engineering Materials
Volume748 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference6th International Conference of Advanced Materials and Engineering Materials, ICAMEM 2017
Country/TerritorySingapore
CitySingapore
Period11/03/1712/03/17

Keywords

  • Carbon dioxide
  • Compressive strength
  • Mass gain
  • SEM

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