期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 299, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.124281
关键词
FCCCw; Synergetic effect; Pozzolans-cement blends hydration; Physical and mechanical properties; Circular Economy; Nano-SiO2
资金
- Research Council of Lithuania (LMTLT) [S-LU-20-4]
The synergistic effect of nano-SiO2 and spent fluid catalytic cracking catalyst in cement pastes enhances the pozzolanic reaction significantly.
This paper describes research on the synergistic effect of nano-SiO2 (NS) and spent fluid catalytic cracking catalyst (FCCCw) in cement pastes' pozzolanicity. Binary and ternary blended cement pastes containing 0.02% of NS and 5-20% of FCCCw were investigated. Hydration at early age followed using semi-adiabatic calorimetry. The macroscale properties were assessed by measuring density, ultrasonic pulse velocity and compressive strength. The microstructures were analysed by scanning electron microscopy, X-ray diffraction and thermogravimetric analysis. The results are consistent among the different techniques and materials' levels and show that a small NS content promotes a marked synergistic enhancement of the pozzolanic reaction.
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