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EFFECT OF FLY ASH AND SUPERABSORBENT POLYMER OPTIMIZATION ON SELF-HEALING CAPABILITY OF CONCRETE



Author(s): Pattharaphon Chindasiriphan (1), Hiroshi Yokota (1), Paponpat Pimpakan (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 1071-1076
Total Pages: 6
Language : English


Abstract: Concrete with self-healing capability realizes sustainable structures by reducing life cycle cost and extending service life. Many self-healing techniques proposed so far are limited because of requiring prolonged water exposure. This paper investigates the potential of using fly ash and superabsorbent polymer (SAP) as concrete admixtures from the self-healing point of view. Fly ash concrete is characterized by pozzolanic reaction which results in a greater long-
term strength. SAP contributes to water accumulation around damaged areas. The effect of both admixtures is examined with varying fly ash and SAP replacement ratios. Cylindrical cement mortar specimens were prepared and PVC jacketed. A uniaxial splitting pre-load was applied at the top edge to generate a crack in the range of 0.02 - 0.5 mm wide. The cracked specimens were water immersed for 28 days. The self-healing performance was evaluated
based on crack width mitigation and water-flow through the crack.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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