Performance of Geopolymer Concrete Exposed to Freezing and Thawing Cycles | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 37, 3A, March 2019, Pages 78-84 PDF (904.68 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.37.3A.1 | ||
| Authors | ||
| Mohammed H. Shamsa1; Basil S. Al-Shathr2; Tareq S. al-Attar2 | ||
| 1Civil Engineering Department, University of Kufa, Najaf - Iraq | ||
| 2Civil Engineering Department, University of Technology Baghdad - Iraq | ||
| Abstract | ||
| In this study, the effect of rapid freezing and thawing (ASTM C666 – procedure A) on three different types of Geopolymer concrete studied using three types of pozzolanic material: fly ash, metakaolin and ground granulated blast furnace slag (GGBFS). The Geopolymer concrete was prepared using 400 kg of the pozzolanic material with alkaline liquid prepared at 8 molar concentration with normal fine and coarse aggregates. The ratio of alkaline to fly ash and GGBFS was 1.5: 1 and for metakaolin was 2: 1 for workability and compressive strength requirements. Specimens (100 × 100 × 400) mm were exposed to 100, 200 and 300 cycles of freezing and thawing. The decrease in measured compressive strength was (23, 43, and 26%) for Fly ash, metakaolin and GGBFS respectively. The investigated types of concrete showed good resistance to freezing and thawing. The durability factor of these types was (77%, 68%, and 81%) for fly ash, metakaolin, and GGBFS respectively. | ||
| Keywords | ||
| Freezing and thawing; Fly ash; Geopolymer; GGBFS; Metakaolin | ||
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