[1] Zhou Shuangxi, Chen Yimin, Zhang Wensheng, et al. Prediction of compressive strength of cement mortarswith fly ash and activated coal gangue [J]. Journal of Southeast University (English Edition), 2006, 22 (4): 549-552. [doi:10.3969/j.issn.1003-7985.2006.04.022]

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Prediction of compressive strength of cement mortarswith fly ash and activated coal gangue()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

22

Issue:

2006 4

Page:

549-552

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2006-12-30

Info

Title:

Prediction of compressive strength of cement mortarswith fly ash and activated coal gangue

Author(s):

Zhou Shuangxi¹;  2;  Chen Yimin¹;  Zhang Wensheng¹

¹China Building Materials Academy, Beijing 100024, China
²School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China

Keywords:

thermal activated coal gangue;  simplex-centroid design;  predicating equation;  compressive strength

PACS:

TQ172

DOI:

10.3969/j.issn.1003-7985.2006.04.022

Abstract:

The pozzolanic activity of coal gangue, which is calcining at 500 to 1 000 ℃, differs distinctly.The simplex-centroid design with upper and lower bounds of component proportion is adopted to study the compressive strength of mortars made with ternary blends of cement, activated coal gangue and fly ash.Based on the results of a minimum of seven design points, three special cubic polynomial models are used to establish the strength predicating equations at different ages for mortars.Five experimental checkpoints were also designed to verify the precision of the equations.The most frequent errors of the predicted values are within 3%.A simple and practical way is provided for determining the optimal proportion of two admixtures when they are used in concrete.

References:

[1] National State Economic and Trade Commission.Policy point of coal gangue utilization[J].Coal Clean Technology, 2000, 6(1):56.(in Chinese)
[2] Li Dongxu, Song Xuyan, Gong Chenchen, et al.Research on cementitious behavior and mechanism of composite cement with coal gangue[J].Journal of the Chinese Ceramic Society, 2004, 32(3):358-363.(in Chinese)
[3] Aitcin Pierre-Claude.Cements of yesterday and today concrete of tomorrow [J].Cement and Concrete Research, 2000, 30(9):1349-1359.
[4] Shen D S, Mao Z E.High quality fly ash concrete[M].Shanghai:Shanghai Science and Technology Press, 1992.54-57.(in Chinese)
[5] Douglas E, Pouskouleli G.Prediction of compressive strength of mortars made with Portland cement-blast furnace slag-fly ash blends [J].Cement and Concrete Research, 1991, 21(4):523-534.
[6] Wang Dehuai, Chen Zhaoyuan.On prediction compressive strengths of mortars with ternary blends of cement, GGBFS and fly ash [J].Cement and Concrete Research, 1997, 27(4):488-493.
[7] Wadsworth Harrison M.Handbook of statistical methods for engineers and scientists[M].McGraw-Hill, Inc, 1990.

Memo

Memo:

Biographies: Zhou Shuangxi(1973—), male, graduate;Chen Yimin(corresponding author), male, doctor, professor, chenym3@163.com.

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