Strength, water permeability, and heat evolution of high strength concrete made from the mixture of calcium carbide residue and fly ash
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Author list: Amnadnua K., Tangchirapat W., Jaturapitakkul C.
Publisher: Elsevier
Publication year: 2013
Journal: Materials & Design (0264-1275)
Volume number: 51
Start page: 894
End page: 901
Number of pages: 8
ISSN: 0264-1275
eISSN: 1873-4197
Languages: English-Great Britain (EN-GB)
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Abstract
This study evaluates the mixture of ground calcium carbide residue (GCR) and ground fly ash (GFA) for use as a new cementing material to produce high strength concrete. Ordinary Portland cement was used as an activator to promote the reaction between GCR and GFA. Compressive strength, modulus of elasticity, heat evolution, and durability in term of water permeability of concrete were investigated and compared with concrete made from ordinary Portland cement (OPC concrete). The results showed that GCR-GFA mixture, despite containing no Portland cement, had a high potential to be used as a new cementing material for producing high strength concrete having a compressive strength that exceeds 50MPa. Furthermore, the compressive strength of GCR-GFA concrete containing 20% Portland cement (used Portland cement of 110kg/m3) could be as high as 67MPa or 95% of OPC concrete at 28days and increased up to 73MPa at 90days or 90% of OPC concrete (used Portland cement of 550kg/m3). The GCR-GFA concretes with and without Portland cement had moduli of elasticity similar to OPC concrete i.e., they increased with the compressive strength. In addition, water permeability of high strength concrete made from GCR-GFA mixture was equal to or slightly lower than OPC concrete. Finally, concrete made from GCR-GFA mixture had much lower heat evolution than OPC concrete. ฉ 2013 Elsevier Ltd.
Keywords
Calcium carbide residual, Compressive strength, Heat evolution, Modulus of elasticity
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