Study on Effect of Carbonation Curing for Cement Minerals and Clinker

Abstract:

As an advanced technology, carbonation reaction could dispose of industrial solid residues and sequestrate CO2 gas, save resources and protect environment. In this study, Major minerals of cement were high-temperature burned using pure chemical reagents ( the burning temperature of C3S, C2S, C3A, C4AF were 1550°C,1400°C,1330°C, 1350°C). Forming and unforming main cement minerals and clinker were carbonated under the condition of CO2 partial pressure P=0.2MPa, T =25°C, CO2 gas concentration c>99.9% and water/soild w/s=0.12kg/kg. The change of minerals and the effect of carbonation were tested. The experimental results showed that carbonation reaction could been occured in four cement minerals (C3S, C2S, C3A and C4AF), and CaCO3 crystals appeared in these minerals. The sequence of carbonation degree of minerals were C3S﹥C2S﹥C4AF﹥C3A. 0.168g and 0.125g CO2 gas could been sequestrated by 1 gramme of C3S and C2S in carbonated curing respectively, and 0.1301g and 0.1464 g CO2 gas could been sequestrated by 1 gramme of formed and powdery clinker. After carbonated curing, clinker samples had high early strength and good soundness, 2h strength was 24.65 MPa and 3d strength was 41.65 MPa.

• Periodical: Key Engineering Materials (Volume 477)
• Pages: 79-84
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.477.79
• Online since: April 2011
• Authors: Zheng Mao Ye, Li Hua Wan, Mei Liu, Jun Chang
• Keywords: Carbonated Curing, Carbonation Mechanism, Cement Minerals, Clinker

References

[1] Wang Shaoli. International Petroleum Economics Monthly, 13, No. 2(2005) 14.

[2] BAO Weijun, LI Huiquan, ZHANG Yi. Chemical Journal, 58, No. 1(2007) 1. (in Chinese ).

[3] Intecgovernmental Panel on Climate Change (IPCC) Special Report on Carbon Dioxide and Storage[R]. Cambrige University Press, 2005, 195.

[4] C Salvador, D L ua, Chemical Engineering Journal, 96, No. 1 (2003) 187.

[5] Lackner K S1. Science , 300, No. 5626 (2003) 1677.

[6] MA Xianwei, HE Xiaoyi FU Rong et. Journal of Materials Science and Engineering, 24, No. 4 (2006) 574. (in Chinese).

[7] MA Xianwei, CHEN Huxing. Journal of Materials Science and Engineering, 21, No. 6(2003) 872. (in chinese).

[8] WU Haoze, ZHANG Linju, YE Zhengmao. Journal of University of Jinan Scince and Technilogy, No. 3, (2009) 218. (in Chinese).

[9] CHANG Jun, WANG Sanwu, SHAO Yixin. Journal of the Chinese Ceramic Society, 35, No. 9 (2007) 14. (in chinese).

[10] ZHANG Linju, WU Haoze , YE Zhengmao. Journal of University of Jinan: Scince and Technilogy, 23, No. 2(2009)127. (in Chinese).

[11] YAO Xiao, TANG Mingshu. Oilfield Chemistry , 16, No. 1 (1999)10. (in Chinese).

[12] YANG Lingjun, ZHANG Xia, SUN Lujuan. Modern Chemical Industry, 27, No. 8(2007).