Back to Search
Start Over
Mechanical Properties of Cement Mortars Incorporating Zero-Valent Iron Nanoparticles.
- Source :
-
Journal of Materials in Civil Engineering . Jan2022, Vol. 34 Issue 1, p1-10. 10p. - Publication Year :
- 2022
-
Abstract
- In this study, the effects of zero-valent iron (ZVI) nanoparticles (NPs) on the mechanical performance of cementitious composites were investigated. For this purpose, the use of a novel nanomaterial containing ZVI NPs blended with carboxymethyl cellulose (CMC) and SiO2 was introduced. CMC/SiO2-ZVI NPs were prepared by a green and low-cost sonochemical method at room temperature and characterized using scanning electron microscopy/energy dispersive X-ray spectroscopy, thermal gravimetry analysis, Brunauer–Emmett–Teller, and X-ray diffraction techniques. The values of intrinsic viscosities of CMC/SiO2-ZVI NPs were examined to determine the optimal miscible condition as affected by the different mass ratios of CMC/SiO2 and sonication time. Then, eight different cement mortar specimens containing CMC/SiO2 and CMC/SiO2-ZVI NPs were prepared in ratios of 0.2%, 0.5%, 1%, and 2% by weight, and flexural and compressive strengths of the specimens were determined at the ages of 7 and 28 days. The microstructure of the specimens was also evaluated. Comprehensive results proving the improvement in the mechanical properties have been obtained in the specimens containing 1% and 2% CMC/SiO2-ZVI NPs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08991561
- Volume :
- 34
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Materials in Civil Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 153734720
- Full Text :
- https://doi.org/10.1061/(ASCE)MT.1943-5533.0004030