Design of Ternary Blend High-Volume Fly Ash Concrete Mixes using Hydrated Lime

Gunasekara, C, Law, D and Setunge, S 2018, 'Design of Ternary Blend High-Volume Fly Ash Concrete Mixes using Hydrated Lime', in P. A. Muhammed Basheer (ed.) Proceedings of the 6th International Conference on Durability of Concrete Structures (ICDCS 2018), Leeds, United Kingdom, 18-20 July 2018, pp. 127-134.


Document type: Conference Paper
Collection: Conference Papers

Title Design of Ternary Blend High-Volume Fly Ash Concrete Mixes using Hydrated Lime
Author(s) Gunasekara, C
Law, D
Setunge, S
Year 2018
Conference name ICDCS 2018
Conference location Leeds, United Kingdom
Conference dates 18-20 July 2018
Proceedings title Proceedings of the 6th International Conference on Durability of Concrete Structures (ICDCS 2018)
Editor(s) P. A. Muhammed Basheer
Publisher Whittles Publishing
Place of publication Scotland
Start page 127
End page 134
Total pages 8
Abstract The increase of carbon emission due to annual growth of Portland cement (PC) production has enforced research into the development of sustainable green concrete using a range of readily available industrial waste materials. The present study is focused on developing two high volume fly ash (HVFA) concretes with cement replacement levels 65% (HVFA‒65) and 80% (HVFA‒80). Initially, the required lime for both HVFA concrete mixes were determined, and then the optimized mix design identified, based on 28-day strength, by varying the fly ash‒lime combination. The optimized mixes achieved a compressive strength of 53MPa and 40MPa, for HVFA‒65 and HVFA‒80 concretes, respectively. Similar to PC concrete, both HVFA concretes showed high resistance to chloride penetration, water absorption and carbonation at 28 days. The early stage strength development is dependent upon the matrix produced in the specific HVFA concrete, which is itself dependent upon the number of unreacted fly ash spheres.
Subjects Construction Materials
Keyword(s) Portland cement
High-volume fly ash concrete
Compressive strength
Pozzolanic Index
Sustainability
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ISBN 9781849953948
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