Monitoring the reduction in shrinkage cracking of mortars containing superabsorbent polymers

Author(s): Gerlinde Lefever, Emanuel De Boe, Dimitrios G. Aggelis, Nele De Belie, Didier Snoeck, Danny Van Hemelrijck
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: 221-226
Total Pages: 6
Language : English

Abstract: Ultra-high performance concrete (UHPC) is characterized by a low water-to-cement ratio, leading to improved durability and mechanical properties. However, the risk for autogenous shrinkage and cracking due to restrained shrinkage increases, which may affect the durability of UHPC as cracks form pathways for ingress of aggressive liquids and gases. These negative features can be prevented by the use of superabsorbent polymers (SAPs) in the mixture. SAPs reduce autogenous shrinkage by means of internal curing: they will absorb water during the hydration process and release it again to the cementitious matrix when water shortage arises. In this way, hydration can continue and shrinkage is diminished.

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

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