Effects of high temperature on the lightweight concrete with silica fume and superplasticizer Yüksek sicakliǧin si̇li̇s dumani ve süperakişkanlaştirici katkili hafi̇f betona etki̇leri̇

Sancak E., ŞİMŞEK O.

Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.21, sa.3, ss.443-450, 2006 (Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 3
  • Basım Tarihi: 2006
  • Dergi Adı: Journal of the Faculty of Engineering and Architecture of Gazi University
  • Derginin Tarandığı İndeksler: Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.443-450
  • Anahtar Kelimeler: Effect of high temperature, Lightweight concrete, Pumice aggregate, Silica fume
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, structural lightweight concrete produced by Pumice and normal-weight aggregate concrete are investigated in terms of compressive strength and weight loss of Concrete with Pumice Aggregate (PAC) and Normal-weight Aggregate (NAC) after being exposed to high temperatures (20, 100,400, 800, 1000 degrees C). For this purpose, 12 different types of concrete mixtures were produced. In producing the NAC and PAC mixtures, a mineral additive, Silica Fume (SF), was used to replace the Portland cement in the ratios of 0 %, 5 % and 10 % by weight. The remaining six types of mixtures were obtained by adding Super Plasticizers (SP) to the mixtures with SF in the ratio of 2 % by weight. In conclusion; unit weight of PAC was 23 % lower than that of NAC. The PAC containing 2 % SP could retain 38 % of the initial compressive strength. When exposed to the temperatures of 20 °C, 100 °C and 400 °C, NAC performed better than the PAC. The loss of compressive strengths increased depending on the ratio of using SF at about 800°C and over.