X-ray CT monitoring of macro void development in mortars exposed to sulfate attack

Tekin İ., Birgül R., Aruntaş H. Y.

COMPUTERS AND CONCRETE, cilt.21, sa.4, ss.367-376, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.12989/cac.2018.21.4.367
  • Dergi Adı: COMPUTERS AND CONCRETE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.367-376
  • Anahtar Kelimeler: mortar, porosity, sulfate attack, image analysis, Computerized Tomography, NON-ACTIVE POROSITY, COMPUTERIZED-TOMOGRAPHY, CEMENT PASTE, CONCRETE, MICROTOMOGRAPHY, AGGREGATE, MICROCT, SHAPE
  • Gazi Üniversitesi Adresli: Evet

Özet

This study reports the results of nondestructive monitoring of macro void developments in mortars manufactured with both ordinary Portland cement and sulfate resistant cement. Two types of curing were utilized; tap water curing and another curing environment that contains 5% Na-2(SO4) solution. Being the primary objective of this study, macro void developments of the mortar specimens were monitored by X- ray Medical Computerized Tomography. Compressive strength tests and water absorption tests were conducted on specimens that were kept in both curing environments for a duration of 560 days. Data analyses yielded consistent results among the three tests used in this experimental study. Macro void ratios of mortars decreased at the beginning of experiments for a certain period; afterwards, macro void ratios increased. The objective of this study was accomplished as anticipated since X-CT image analysis was able to nondestructively monitor macro void development process in cement mortars.