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Effect of large amounts of natural pozzolan addition on properties of blended cements
Date
2005-06-01
Author
Turanlı, Lutfullah
Uzal, B
Bektas, F
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In this study, the effects of 35, 45, and 55 wt.% natural pozzolan addition on the properties of blended cement pastes and mortars were investigated. Blended cements with 450 m(2) /kg Blaine fineness were produced from a Turkish volcanic tuff in a laboratory mill by intergrinding portland cement clinker, natural pozzolan, and gypsum. The cements were tested for particle size distribution, setting time, heat of hydration, compressive strength, alkali-silica activity, and sulfate resistance. Cement pastes were tested by TGA for Ca(OH)(2) content and by XRD for the crystalline hydration products. The compressive strength of the mortars made with blended cements containing large amounts of natural pozzolan was lower than that of the portland cement at all tested ages up to 91 days. Blended cements containing large amounts of pozzolan exhibited much less expansion with respect to portland cement in accelerated alkali-silica test and in a 36-week sulfate immersion test.
Subject Keywords
General Materials Science
,
Building and Construction
URI
https://hdl.handle.net/11511/56472
Journal
CEMENT AND CONCRETE RESEARCH
DOI
https://doi.org/10.1016/j.cemconres.2004.07.022
Collections
Graduate School of Natural and Applied Sciences, Article