Transport and mechanical properties of self consolidating concrete with high volume fly ash

Sahmaran M., YAMAN İ. Ö., TOKYAY M.

CEMENT & CONCRETE COMPOSITES, cilt.31, sa.2, ss.99-106, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 2
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.cemconcomp.2008.12.003
  • Dergi Adı: CEMENT & CONCRETE COMPOSITES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.99-106
  • Anahtar Kelimeler: Self consolidating concrete, High volume fly ash, Mechanical properties, Transport properties, INCORPORATING HIGH VOLUMES, PERFORMANCE, WORKABILITY, DURABILITY
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

This paper presents the transport. and mechanical properties of self consolidating concrete that contain high percentages of low-lime and high-lime fly ash (FA). Self consolidating concretes (SCC) containing five different contents of high-lime FA and low-lime FA as a replacement of cement (30, 40, 50, 60 and 70 by weight of total cementitious material) are examined. For comparison, a control SCC mixture without any FA was also produced. The fresh properties of the SCCs were observed through, slump flow time and diameter, V-funnel flow time, L-box height ratio, and segregation ratio. The hardened properties included the compressive strength, split tensile strength, drying shrinkage and transport properties (absorption, sorptivity and rapid chloride permeability tests) tip to 365 days. Test results confirm that it is possible to produce SCC with a 70% of cement replacement by both types of FA. The use of high volumes of FA in SCC not only improved the workability and transport properties but also made it possible to produce concretes between 33 and 40 MPa compressive strength at 28 days, which exceeds the nominal compressive strength for normal concrete (30 MPa). (C) 2008 Elsevier Ltd. All rights reserved.