The effect of C(3)A content on sulfate durability of Portland limestone cement mortars

Tosun-Felekoglu K.

CONSTRUCTION AND BUILDING MATERIALS, cilt.36, ss.437-447, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.conbuildmat.2012.04.091
  • Dergi Adı: CONSTRUCTION AND BUILDING MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.437-447
  • Anahtar Kelimeler: Limestone blended cement, Sodium sulfate, Magnesium sulfate, Ettringite, Thaumasite, THAUMASITE FORMATION, BLENDED CEMENTS, SODIUM-SULFATE, ATTACK, HYDRATION, CONCRETE, FILLER, RESISTANCE, ETTRINGITE, PLAIN
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

The effect of C(3)A content on sulfate resistance of limestone incorporated cements has been investigated within the scope of this study. Cements with two different C(3)A contents (4.6%, 11.2%) have been used. Blended cements have been prepared by separate grinding and mixing method. Limestone incorporation ratios were 5%, 10%, 20% and 40%, respectively. Standard mortar samples of 50 x 50 x 50 mm cubes and 25 x 25 x 285 mm prisms have been prepared. After 1 months of water curing, samples have been exposed to different sulfate solutions (Na2SO4 and MgSO4) and temperatures (5 and 20 degrees C) for a period of 6 months. During this period length changes were monitored and compressive strength values have been determined at 3 and 6 months intervals of sulfate exposure. Furthermore microstructure investigations have been conducted on selected samples.