Use of perlite as a pozzolanic addition in producing blended cements

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Erdem T. K., Meral Ç., Tokyay M., Erdogan T. Y.

CEMENT & CONCRETE COMPOSITES, cilt.29, sa.1, ss.13-21, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 1
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.cemconcomp.2006.07.018
  • Dergi Adı: CEMENT & CONCRETE COMPOSITES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.13-21
  • Anahtar Kelimeler: grinding, blended cement, pozzolan, cement manufacture, perlite, ALKALI SILICA, CONCRETE, AGGREGATE, STRENGTH, TECHNOLOGY
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

There are similar to 6700 million tons of perlite reserves in the world and two thirds of this amount takes place in Turkey. Although perlite possesses pozzolanic properties, it has not been so far used in producing blended cements. This study focuses on the use of natural perlites in blended cement production. For this purpose, after examining the suitability of the perlites as pozzolans and their case of grindability, 16 types of blended cements having 320 m(2)/kg or 370 m(2)/kg Blaine fineness were produced by using 20% or 30% perlite additions. Production of the blended cements were accomplished either by intergrinding or separate grinding. The performance of the cements was evaluated by conducting the following tests: particle size distribution by laser diffraction, normal consistency, setting time, soundness and compressive strength. The results showed that perlites possess sufficient pozzolanic characteristics to be used in production of blended cement. (C) 2006 Elsevier Ltd. All rights reserved.