Studies on blended cements containing a high volume of natural pozzolans

Date

2003-11-01

Author

Uzal, B
Turanlı, Lutfullah

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This paper presents the results of an investigation on the characteristics of laboratory-produced blended portland cements containing 55% by weight volcanic tuffs from Turkey. Volcanic tuffs from two different resources were used. Using different grinding times, particle size distribution, setting time, compressive strength, and alkali-silica activity of the blended cements were investigated and compared with reference portland cements ground for the same time period. For the compressive strength test, a superplasticizer was used to obtain mortar mixtures of adequate workability at a constant water-to-cement (w/c) ratio of 0.45. Compared to portland cement, the blended cements containing 55% pozzolan showed somewhat lower strengths up to 91 days when the grinding time was 90 min. However, at 91 days, blended cements and portland cements ground for 120 min showed similar strength. Moreover, blended cements containing 55% natural pozzolans showed excellent ability to reduce the alkali-silica expansion.

Subject Keywords

General Materials Science, Building and Construction

URI

https://hdl.handle.net/11511/57376

Journal

CEMENT AND CONCRETE RESEARCH

DOI

https://doi.org/10.1016/s0008-8846(03)00173-x

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

B. Uzal and L. Turanlı, “Studies on blended cements containing a high volume of natural pozzolans,” CEMENT AND CONCRETE RESEARCH, pp. 1777–1781, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57376.