Journal
COMPOSITES PART B-ENGINEERING
Volume 48, Issue -, Pages 122-128Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.12.008
Keywords
Recycling; Microstructure; Porosity; Environmental degradation; Accelerated carbonation
Funding
- Minister of Science and Innovation [MAT2009-10874-CO3/01-03]
- Spanish National Research Council (CSIC) [200460E617]
Ask authors/readers for more resources
The carbonation of hydrated ternary Portland cement (TPC), containing thermally activated paper sludge and fly ash, was studied in a semi-dynamic atmosphere of 100% CO2, and 65% relative humidity at 20 +/- 1 degrees C, for a period of 30 days. The changes of the mineralogical phases and porosity before and during the carbonation were characterized by X-ray diffraction and mercury intrusion porosimetry. The kinetics of the process was evaluated from the total CaCO3 content by means of thermogravimetric analysis. The pH of the simulated pore solution was analyzed before and after different periods of time. An equivalent study was carried out on ordinary Portland cement (OPC), whose results were compared to those of TPC one. The carbonation attack was 2.2 times faster in the case of the TPC. The results were discussed on the basis of the different porosity, portlandite content and pH of the pore-solution. (c) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available