Determination of optimal microwave curing cycle for fly ash mortars

TOPÇU İ. B., Toprak M. U., Akdag D.

CANADIAN JOURNAL OF CIVIL ENGINEERING, cilt.35, sa.4, ss.349-357, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 4
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1139/l07-132
  • Dergi Adı: CANADIAN JOURNAL OF CIVIL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.349-357
  • Anahtar Kelimeler: microwave curing, accelerated curing, strength prediction, mortar, COMPRESSIVE STRENGTH, LATER-AGE, CONCRETE, MATURITY, ENERGY
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Microwave energy can accelerate the hydration of cement, which results in the rapid strength development of concrete. In this paper, prediction of later age compressive strength of fly ash cement mortars, based on the accelerated strength of mortars cured with microwave energy, was investigated. To accelerate curing properly, optimal processing parameters of microwave curing (MC) on Portland cement mortars (CM) and fly ash cement mortars (FA) were first determined and then were applied to mortars. The possible early ages for the strength prediction were found to be at 6 and 8 h for CM and FA, respectively. The error percentages for prediction of CM were +/-2.22% and 2.91% for 7 and 28 d, respectively. Error percentages for FA, on the other hand, were +/-4.36% and 5.20% for 7 and 28 d, respectively.