CENTRO DE TECNOLOGIA DE RECURSOS MINERALES Y CERAMICA
Unidad Ejecutora - UE
Blended Cements with Limestone Filler and Kaolinitic Calcined Clay: Filler and Pozzolanic Effects
EDGARDO FABIÁN IRASSAR; ALBERTO NESTOR SCIAN; ALEJANDRA TIRONI
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
ASCE-AMER SOC CIVIL ENGINEERS
Lugar: Reston, Virginia; Año: 2017 vol. 29
In this paper, binary and ternary blendedcements (bc) based on calcined clay (CC, 0 to 30%) obtained from low gradekaolinitic clay and limestone filler (LF, 0 to 10%) was developed and theinteraction of filler and pozzolanic effects on the compressive strength, thehydration phase and the pore size distribution were studied. Results show that early compressive strength decreasesfor high levels of replacement (10LF30CC) due to dilution effect that cannot becompensated by the filler andpozzolanic effects. Based on CH content, the addition of limestone filler in ternary blendedcements is favorable to the development of pozzolanic reaction of calcined clay at early age. This study shown thatdilution, filler and pozzolanic effects are relevant at 2 days; filler andpozzolanic effects are important at 7 days; and, the pozzolanic effect is themost important at later age.