Abstract

The elevated temperature curing could cause rapid evaporation of moisture from geopolymer framework, which in turn will trigger a drying shrinkage to the specimen and affect the performance of hardened geopolymer. Different studies have been done on the characteristics of fly ash based geopolymer, yet scarce studies are available on the addition of self-healing agent to reduce shrinkage phenomenon during heat curing. This study experimentally examines the effect of PVA (poly ethylene vinyl acetate) as a self-healing agent on the mechanical properties of geopolymer mortar after 24 hours curing in various temperatures. The effect of PVA was evaluated at 1% of fly ash weight in geopolymer mixture with various curing temperatures of 70, 80, and 90 ºC. The curing process of geopolymer mortar was done for 24 hours without any post-cast detainment period. Compressive strength and porosity tests were conducted to provide fundamental information on the hardened properties of geopolymer mortar. Based on the results, 90ºC heat curing showed higher improvement on compressive strength properties than other specimens. Strength development of geopolymer mortar was also affected by various geopolymerization rate that relies on the heat exposure.

Original languageEnglish
Title of host publicationProperties and Application of Geopolymers
EditorsJanuarti Jaya Ekaputri, Januarti Jaya Ekaputri, Antoni Antoni
PublisherTrans Tech Publications Ltd
Pages16-20
Number of pages5
ISBN (Print)9783038355441
DOIs
Publication statusPublished - 2016
Event2nd Malaysia-Indonesia Geopolymer Symposium, 2015 - Surabaya, Indonesia
Duration: 25 Oct 201527 Oct 2015

Publication series

NameMaterials Science Forum
Volume841
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2nd Malaysia-Indonesia Geopolymer Symposium, 2015
Country/TerritoryIndonesia
CitySurabaya
Period25/10/1527/10/15

Keywords

  • Fly ash
  • Geopolymer
  • Poly (Ethylene-Co-Vinyl Acetate)
  • Self-Healing

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