Accelerated carbonation effect on behaviour of ternary Portland cements
作者： Moisés Frías , Sara Goñi
DOI: 10.1016/J.COMPOSITESB.2012.12.008
关键词: Fly ash 、 Composite material 、 Portland cement 、 Materials science 、 Portlandite 、 Carbonation 、 Porosity 、 Thermogravimetric analysis 、 Ternary operation 、 Relative humidity
摘要: Abstract The carbonation of hydrated ternary Portland cement (TPC), containing thermally activated paper sludge and fly ash, was studied in a semi-dynamic atmosphere 100% CO 2 , 65% relative humidity at 20 ± 1 °C, for period 30 days. changes the mineralogical phases porosity before during were characterized by X-ray diffraction mercury intrusion porosimetry. kinetics process evaluated from total CaCO 3 content means thermogravimetric analysis. pH simulated pore solution analyzed after different periods time. An equivalent study carried out on ordinary (OPC), whose results compared to those TPC one. attack 2.2 times faster case TPC. discussed basis porosity, portlandite pore-solution.
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