Study on the early Hydration of Alkali-Activated Slag Cementing Materials

Article Preview

Abstract:

The early hydration of alkali-activator slag(AAS) cementing material is studied by changing the environment temperature, the proportion of slag and fly ash, water glass module, and dosage of sodium silicate. The results show that as the temperature raise, the hydration rate and hydration heat of the AAS cementing materials will remarkably accelerate. Joining coal ash in the pure slag cementing material can effectively slowdown its hydration reaction, and the hydration heat is also reduced.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

1465-1469

Citation:

Online since:

July 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] PURDON A O. The action of alkali on blast furnace slag [J]. J Soc Chem. Ind, 1940, 59: 191-202.

Google Scholar

[2] DAVIDOVITS J. Geopolymers: inorganic polymeric new materials [J]. J Therm Anal, 1991, 37(8): 1633-1656.

Google Scholar

[3] YANG Nanru. The physical and chemical basis of the formation of alkali cementitious materials[J]. Journal of the Chinese Ceramic Society. 1996, 24(2): 209-215.

Google Scholar

[4] ROY D M. Alkali-activated cements: opportunities and challenges [J]. Cem Concr Res, 1999, 29: 249-254.

Google Scholar

[5] YANG Changhui, PU Xincheng. Discuss the retarding and retarding methods of alkali activated slag cement and concrete[J]. Journal of Chongqing Jianzhu University, 1996, 18(3): 67-72.

Google Scholar

[6] ROY D M. SILSBEE M R, WOLFE-CONFER D. New rapid setting alkali activated cement compositions [J]. MRS Proc, 1990, 179: 203-220.

DOI: 10.1557/proc-179-203

Google Scholar

[7] XU Hua, DEVENTER J S J. The geopolymerisation of alumi-silicate minerals [J]. Inter J Mineral Proc, 2000, 59(3): 247-266.

DOI: 10.1016/s0301-7516(99)00074-5

Google Scholar

[8] YIP C K, LUKEY G C, PROVIS J L, et al. Effect of calcium silicate sources on geopolymerisation[J]. Cem Concr Res, 2008, 38: 554-556.

DOI: 10.1016/j.cemconres.2007.11.001

Google Scholar

[9] Shi, C. and Day, R. L. A calorimetric study of early hydration of alkali-slag cements[J]. Cement and Concrete Research, 1995, 25(6), 1333-1346.

DOI: 10.1016/0008-8846(95)00126-w

Google Scholar

[10] Shi,C. and Day R.L. Factors affecting early hydration characteristics of alkali-slag cements [J]. Cement and Concrete Research, 1996, 26(3), 439-448.

DOI: 10.1016/s0008-8846(96)85031-9

Google Scholar

[11] Krizan, D. And Zivanovic, B. Effects of dosage and modulus of water glass on early hydration of alkali-slag cements[J]. Cement and Concrete Research, 2002, 32(8): 1181-1188.

DOI: 10.1016/s0008-8846(01)00717-7

Google Scholar

[12] Puertas,F., Palomo, A., Fernandez-Jimenez, A., Jzqyuerdi, J.Z. and Granizo, M. L. Effect of superplasticizer on behaviour and properties of alkaline cements[J]. Advances in Cement Research, 2003, 15(1): 23-28.

DOI: 10.1680/adcr.15.1.23.36730

Google Scholar

[13] Fernandez-Jimenez, A. And Puertas, F. Influence of the activator concentration on the kinerics of the alkaline activation process of a blast furnace slag[J]. Materiales de Construction, 1997, 47(246): 31-41.

DOI: 10.3989/mc.1997.v47.i246.505

Google Scholar

[14] JAARSVELD J G S, van DEVENTER J S J, LUKEY G C. The char-acterization of source materials in fly ash-based geopolymers[J]. Mater Lett, 2003, 57(7): 1272-1280.

DOI: 10.1016/s0167-577x(02)00971-0

Google Scholar

[15] BAKHAREV T. Geopolymeric materials prepared using Class F fly ash and elevated temperature curing [J]. Cem Concr Res, 2005, 35: 1224-1232.

DOI: 10.1016/j.cemconres.2004.06.031

Google Scholar