TY - JOUR
T1 - Combined Effect of Multi-Walled Carbon Nanotubes and Silica Fume on Mechanical, Physicochemical, and Thermal Properties of Concrete Composites
AU - Cea, Evalyn Joy C.
AU - Omisol, Christine Joy M.
AU - Tuble, Kent Andrew Q.
AU - Bongabong, Ariel G.
AU - Aguinid, Blessy Joy M.
AU - Asequia, Dan Michael A.
AU - Erjeno, Daisy Jane D.
AU - Ahalajal, Mary Ann N.
AU - Maravillas, Felrose P.
AU - Cavero, Applegen I.
AU - Dumancas, Gerard
AU - Malaluan, Roberto M.
AU - Lubguban, Arnold A.
N1 - Publisher Copyright:
© 2025 by the authors.
PY - 2025/4/1
Y1 - 2025/4/1
N2 - This study investigates the combined effects of multi-walled carbon nanotubes (MWCNT) and silica fume on the workability, microstructure, thermal stability, and compressive strength of concrete. The addition of these admixtures slightly reduced slump performance due to their reinforcing effect. However, the concrete remained within the medium workability range. Scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) confirmed the successful integration of MWCNT and silica fume. The analysis revealed improved matrix densification and stronger interfacial bonding. Thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy provided further insights into the material’s thermal stability and chemical interactions. These microstructural and thermal improvements contributed to a 31.5% increase in compressive strength compared to the control mix. The findings highlight the synergistic role of MWCNT and silica fume in enhancing concrete performance.
AB - This study investigates the combined effects of multi-walled carbon nanotubes (MWCNT) and silica fume on the workability, microstructure, thermal stability, and compressive strength of concrete. The addition of these admixtures slightly reduced slump performance due to their reinforcing effect. However, the concrete remained within the medium workability range. Scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) confirmed the successful integration of MWCNT and silica fume. The analysis revealed improved matrix densification and stronger interfacial bonding. Thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy provided further insights into the material’s thermal stability and chemical interactions. These microstructural and thermal improvements contributed to a 31.5% increase in compressive strength compared to the control mix. The findings highlight the synergistic role of MWCNT and silica fume in enhancing concrete performance.
KW - compressive strength
KW - elemental homogeneity
KW - environmental effects
KW - multi-walled carbon nanotubes
KW - silica fume
KW - thermal stability
KW - workability
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105002278266&origin=inward
UR - https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=105002278266&origin=inward
U2 - 10.3390/buildings15071087
DO - 10.3390/buildings15071087
M3 - Article
SN - 2075-5309
VL - 15
JO - Buildings
JF - Buildings
IS - 7
M1 - 1087
ER -