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Effect of Nanosilica Additions on Belite Cement Pastes Held in Sulfate Solutions
Progress in Nanotechnology
Fly Ash Belite cement (FABC) pastes with and without nanosilica additions have been prepared and maintained in sulfate solutions (Na 2 SO 4 0.5 M) for 180 days. The mechanical performance and the changes in microstructure have been monitored at 28, 90 and 180 days by compressive strength, X-ray diffraction (XRD) and 29 Si MAS NMR measurements. We have found that, unexpectedly, and contrary to what happens in Ordinary Portland Cements (OPC), the addition of nanosilica particles induces andoi:10.1002/9780470588260.ch13 fatcat:4wg7eakb75egnghqy4x2elobqy