Effect of Elevated Temperatures on Properties of Blended Cements with Clinoptilolite

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Beycioglu A., ARUNTAŞ H. Y., GENÇEL O., Hagg Lobland H. E., ŞAMANDAR A., Brostow W.

MATERIALS SCIENCE-MEDZIAGOTYRA, cilt.22, sa.4, ss.548-552, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 22 Sayı: 4
  • Basım Tarihi: 2016
  • Doi Numarası: 10.5755/j01.ms.22.4.13354
  • Dergi Adı: MATERIALS SCIENCE-MEDZIAGOTYRA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.548-552
  • Anahtar Kelimeler: blended cement, clinoptilolite, cement compressive strength, elevated temperatures, MECHANICAL-PROPERTIES, CONCRETE, ZEOLITE, PASTE
  • Gazi Üniversitesi Adresli: Evet

Özet

We have investigated the effect of elevated temperature on properties of clinoptilolite blended cements. Clinoptilolite was used at 5 %, 10 %, 15 % and 20 % replacement by weight for Portland cement while sand and water quantities were kept constant in all mix designs. Dry weights, flexural strengths, and compressive strengths of specimens were determined as a function of time. The same properties were again evaluated after specimens, having reached the age of 90 days, were exposed to 300 degrees C, 400 degrees C and 500 degrees C temperatures for 3 h. Initial setting times for all cements prepared were >= 60 minutes, the limiting time according to TS EN 197-1. The mortars with 5 % or 10 % cliniptilolite substitution have compressive strength exceeding 42.5 MPa after being subjected to 400 degrees C and 500 degrees C.