Application of Waste-derived Lightweight Aggregates for Internal Curing of Concrete

Author(s): Pietro Lura, Mateusz Wyrzykowski, Sadegh Ghourchian, Sakprayut Sinthupinyo, Clarence Tang, Natechanok Chitvoranund, Tipwimol Chintana and Kritsada Sisomphon
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 276-283
Total Pages: 8
Language : English

Abstract: One of the common methods for reduction of early-age shrinkage of concrete is replacement of part of the aggregates with lightweight aggregates saturated with water, also called internal curing. In this work, different types of industrial waste (ashes) are employed as internal curing agents. The experimental study consisted of measurements of pore structure of aggregates, autogenous shrinkage and mechanical properties of mortars and concretes. Our results show that the waste-derived lightweight aggregates can considerably limit autogenous shrinkage of concrete. At the same time, even though the lightweight aggregates are porous materials that replace normal-weight sand, they do not lead to a considerable reduction of mechanical properties; on the contrary, even a strength improvement has been observed for some mixtures. Moreover, some types of lightweight aggregate can be added to concrete in
the dry state without the need of prior water saturation.

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

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