Influence of polymer type on adhesion performance of a blended cement mortar

Joshua V. Brien, Kamyar C. Mahboub

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The purpose of this study was to examine the influence of various polymeric materials on the adhesion characteristics of a rapid setting, minimum defect mortar based upon a blend of calcium sulfoaluminate (CSA) cement and ordinary Portland cement (OPC). Four different polymer powders were added to the base mortar at a polymer/cement ratio (p/c) of 0.15. The water/cement (w/c) ratio remained constant for all mortars at 0.42. The polymeric materials consisted of an acrylic polymer powder with Tg=-10°C, a styrene butadiene rubber (SBR) polymer powder with Tg=15°C and two vinyl acetate/ethylene (VAE) polymer powders, one with Tg=-7°C and the other with Tg=20°C. Mortars were tested for direct tensile strength following ASTM C307 and pull-off strength following a variant of ASTM C1583 after curing for either 24 h or 13 days at ambient laboratory temperature of 23°C. Mortars were cast over concrete, wood, metal and glass substrates. Pull-off tests over concrete substrate resulted in substrate failure for all polymer modified mortars. Pull-off tests cast over wood, glass and metal substrate materials highlighted the SBR polymer for demonstrating the poorest adhesion performance. Statistical analysis was performed with Minitab software.

Original languageEnglish
Pages (from-to)7-13
Number of pages7
JournalInternational Journal of Adhesion and Adhesives
Volume43
DOIs
StatePublished - 2013

Keywords

  • Concrete
  • Glass
  • Latex and dispersion
  • Steels
  • Wood

ASJC Scopus subject areas

  • Biomaterials
  • General Chemical Engineering
  • Polymers and Plastics

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