Influence of natural pozzolan, colemanite ore waste, bottom ash, and fly ash on the properties of Portland cement

Targan S., Olgun A., Erdogan Y., Sevinc V.

CEMENT AND CONCRETE RESEARCH, cilt.33, sa.8, ss.1175-1182, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 8
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0008-8846(03)00025-5
  • Dergi Adı: CEMENT AND CONCRETE RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1175-1182
  • Anahtar Kelimeler: setting time, compressive strength, bending strength, colemanite ore waste, natural pozzolan, CONCRETE, STRENGTH
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

This study has examined the effect of natural pozzolan (NP), colemanite ore waste (CW), coal fly ash (FA), and coal bottom ash (BA) on the properties of cement and concrete. The parameters studied included compressive strength, bending strength, volume expansion, and setting time. A number of cements were prepared (in the presence of fixed quantity of 10% FA, 10% BA, and 4% CW) by the replacement of Portland cement (PC) with NP in range of 5 - 30%. The results showed that the final setting time of cement pastes were generally accelerated when the NP replaced part of the cement. However, NP exhibited a significant retarding effect when used in combination with CW. The results also showed that the inclusion of NP at replacement levels of 5% resulted in an increase in compressive strength of the specimens compared with that of the control concrete. The replacement of PC by 10 - 15% of NP in the presence of fixed quantity of CW improves the bending strength of the specimens compared with control specimens after 60 days of curing age. (C) 2003 Elsevier Science Ltd. All rights reserved.