Effect of binder type and content on physical and mechanical properties of geopolymers

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KOÇKAL N. U., Beycan O., Gulmez N.

SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES, cilt.43, sa.4, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s12046-018-0806-1
  • Dergi Adı: SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Alkali activator, geopolymer, binder, waste aluminium particles, SILICA FUME, CALCIUM HYDROXIDE, FLY-ASH, ACTIVATOR CONCENTRATION, THERMAL-CONDUCTIVITY, COMPRESSIVE STRENGTH, BOTTOM ASH, TEMPERATURE, CONCRETE, BEHAVIOR
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In this study, the physical and mechanical behaviors of geopolymers prepared by using different amounts of silica fume and calcium hydroxide as binding materials, acidic pumice as fine aggregate and waste aluminium particles as air-entraining agent were investigated. Test results showed that binder types, amount of binders and alkali activator (sodium hydroxide) significantly affected the physical and mechanical behavior of geopolymer specimens. Bulk density, compressive and flexural strength decreased with the higher alkali activator content. Addition of waste aluminium particles led to decrease in bulk density and strength due to the some extent of entrained air. In the case of same alkali activator content, compressive and flexural strength increased with increase in silica fume and calcium hydroxide up to a certain level.