Effect of Internal Curing on Concrete Properties

Author(s): Fahim Ahmed, Munaz Ahmed Noor, Muhammad Nazmul Huda, Fazle Rabbi and Md. Rashedul hasan
Paper category: Proceedings
Book title: Proceeding of the 71st RILEM Annual Week & ICACMS 2017
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN:978-2-35158-195-7, 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 249-258
Total Pages: 10
Language : English

Abstract: Internal curing is a process where hydration of cement occurs due to additional internal water apart from mixing water. This additional water is supplied from internal reservoir. For performance ease and economy, the material used as internal reservoir should have high absorption and desorption capacity so that it can provide required water for curing of concrete, at the same time available and cheap. Availability of brick (burnt clay aggregate) in local market, lightweight and high water absorption capacity of the aggregate are the prime factors for selecting it as a Light Weight Aggregate (LWA). One of the challenges of internal curing is to select the appropriate water-cement ratio (w/c ratio) and percent replacement for a mixture. In present study different w/c ratio is taken and varied with LWA replacement to observe variation of strength and modulus of elasticity, and to get the optimum w/c ratio and percent replacement. Similar effect on strength and modulus of elasticity has been observed for variation of w/c ratio and percent replacement for both normal curing and internal curing concrete. This similar trend indicates the effectiveness of internal curing. w/c ratio 0.40 and 20% replacement of coarse aggregate is found to be the optimum one.

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

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