Improvement of Concrete Durability by Composite Cement

Article Preview

Abstract:

Mineral powders play positive role in improving the durability of concrete subjected to alkaline and saline corrosion, where sulphate ion and chloride ion coexisted may cause serious deterioration to the reinforced concrete structures. Metakaolin, slag, fly ash and natural zeolite mixed in appropriate proportion were tested in inhibiting the deterioration. It is found that the composite powder might decreased AAR and the charge passed of concrete effectively,the while the 7d and 28d strength of cement and concrete are improved as well.

You might also be interested in these eBooks

Info:

Periodical:

Key Engineering Materials (Volumes 405-406)

Pages:

14-18

Citation:

Online since:

January 2009

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2009 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Feng Naiqian, Feng Xiaoxin, Hao Tingyu, Xing Feng. Effect of ultrafine mineral powder on the charge passed of concrete. Cement and concrete research, Vol. 32 (2002), pp.623-627.

DOI: 10.1016/s0008-8846(01)00731-1

Google Scholar

[2] Feng Naiqian, Niu Quanlin, Feng Xiaoxin. Effect of superfine mineral powder on the Cl- diffusibility of mortar and concrete. Chinese Engineering science, 2002, 2, pp.69-73.

Google Scholar

[3] Feng Naiqian, Technology of high performance concrete, press of Chinese atomic energy, 2000. 6 Beijing China.

Google Scholar

[4] Zhongzi Xu, Xianhui Lan, Min Deng, And Mingshu Tang. A new accelerated method for determining the potential alkali-carbonate reaction. In: Proceeding of 11th International Conference on Alkali-Aggregate Reaction, Quebec City, Canada, 2000, pp.703-712.

Google Scholar

[5] ASTM C441, Standard Test Method for Effectiveness of Mineral Admixtures or Ground Blast-Furnace Slag in Preventing Excessive Expansion of Concrete Due to the Alkali-Silica Reaction.

DOI: 10.1520/c0441-02a

Google Scholar

[6] Tan Ranjing. Behavior of the alkaline saline corrosion on the buildings and structures and its precaution. In proceeding: Symposium of concrete and cement product branch of the Chinese ceramic society, 1992. 6. Huhehaote, Inner Mongolia, china.

Google Scholar