Use of superabsorbent polymers to reduce autogenous shrinkage in mortars with ground granulated blastfurnace slag

Fernando Do Couto Rosa Almeida, Agnieszka Klemm, Giacomo Moriconi, Martina Cingolani

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Abstract

This ICT Prize-winning paper argues that superabsorbent polymers (SAP) can be used for internal curing and reduction of cracking susceptibility, due to their high capacity of water control in fresh concrete. SAP efficiency in autogenous shrinkage reduction in blended cements containing ground granulated blastfurnace slag has been evaluated. The study focused on mortars with four levels of cement replacement by GGBS and two types of SAP with different water absorption capacities. Tests of consistency (flow table method), air content of fresh mortar (pressure method) and autogenous shrinkage (corrugated tubes method) have been carried out. The results showed that SAP can significantly reduce autogenous shrinkage for any studied GGBS content in comparison with the reference mortar. In addition to the positive environmental impact of using GGBS, the reduction of autogenous shrinkage by SAP may decrease the cracking susceptibility and hence increase the sustainability level of the material for more durable construction.
Original languageEnglish
Title of host publicationThe Institute of Concrete Technology Yearbook
Subtitle of host publication2016-2017
Place of PublicationSurrey
Number of pages5
Edition21
Publication statusPublished - 2017

    Fingerprint

Keywords

  • superabsorbent polymers
  • autogeneous shrinkage
  • mortars

Cite this

Do Couto Rosa Almeida, F., Klemm, A., Moriconi, G., & Cingolani, M. (2017). Use of superabsorbent polymers to reduce autogenous shrinkage in mortars with ground granulated blastfurnace slag. In The Institute of Concrete Technology Yearbook: 2016-2017 (21 ed.).