A Novel Study on Mechanism of Internal Curing in Recycled Aggregate Concrete Using X-Ray Microtomography

Author(s): Subhasis Pradhan, Shailendra Kumar, Sudhirkumar V. Barai
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 467-472
Total Pages: 6
Language : English

Abstract: The completion of hydration of cement requires adequate quantity of water over a period of time. Unlike conventional curing, internal curing occurs due to the internal supply of water by aggregates. The highly absorptive structural material like recycled coarse aggregate can fulfil the internal curing phenomena, especially prepared using two stage mixing approach (TSMA). In TSMA the part of water (~ 40%) added to the aggregate mixture prior to the addition of cement contributes subsequently in the hydration process through internal curing. X-ray microtomography of concrete specimen was carried out for a better insight of the mechanism of internal curing. The improved interfacial transition zone quality owing to the internal curing effect is demonstrated by the Vickers microhardness test.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

>> You must be connected to view the paper. You can register for free if you are not a member