The effect of superabsorbent polymers (SAP) on the performance of cementitious materials

Khashayar Farzanian, Yara Wehbe, Ali Ghahremaninezhad-M

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

In this study, the interaction between superabsorbent polymers (SAP) and cementitious materials during absorption and desorption, and the influence of SAP on the properties of cementitious materials were investigated. The effect of pore solution chemistry and mechanical pressure on the absorption of SAPs was examined. The role of capillary action on the desorption of hydrogels was elucidated. The mechanical strength of cement pastes was assessed using the compressive strength test and electrical impedance spectroscopy (EIS) was utilized to evaluate the electrical resistivity of the cement pastes modified with SAP. It was shown that the effect of divalent Ca2+ is more pronounced than that of monovalent Na+ on SAP absorption. The mechanical pressure was shown to strongly affect the absorption capacity of SAP. Capillary action was observed to significantly accelerate the desorption rate of hydrogels. The compressive strength of cement pastes with SAP was shown to be lower than the control cement paste. The electrical resistivity of the cement pastes with SAP was observed to increase compared to the control cement paste with the same total water/cement ratio used here.

Original languageEnglish (US)
JournalSustainable Construction Materials and Technologies
Volume2016-August
StatePublished - Jan 1 2016
Event4th International Conference on Sustainable Construction Materials and Technologies, SCMT 2016 - Las Vegas, United States
Duration: Aug 7 2016Aug 11 2016

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

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