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Studies on blended cements containing a high volume of natural pozzolans
Date
2003-11-01
Author
Uzal, B
Turanlı, Lutfullah
Metadata
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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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Effect of material characteristics on the properties of blended cements containing high volumes of natural pozzolans
Turanlı, Lutfullah; Uzal, B; Bektas, F (Elsevier BV, 2004-12-01)
The effect of three different natural pozzolans from Turkish deposits on the properties of blended cements produced by intergrinding cement clinker with a high volume of natural pozzolan (55 wt.% of the cementitious material) was investigated. The particle size distribution of blended cements, setting time, heat of hydration, and compressive strength of blended cement mortars were determined. Experimental results showed that the hardness of the pozzolanic material strongly influenced the particle size distr...
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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.