Optimization of preparation parameters and testing verification of carbon nanotube suspensions used in concrete DOI Creative Commons

Shan-Xiu Huang,

Huikuan Li,

Fenghui Gao

et al.

Nanotechnology Reviews, Journal Year: 2024, Volume and Issue: 13(1)

Published: Jan. 1, 2024

Abstract Carbon nanotubes (CNTs) have received extensive attention due to their exceptional properties and wide range of applications. However, the agglomeration CNTs in aqueous solutions organic solvents significantly limits large-scale application. In this study, microscopic morphology dispersion stability CNT suspensions were analyzed, most suitable surfactant study was selected. The preparation parameters optimized, uniaxial compression tests conducted on carbon nanotube concrete (CNTC) prepared using optimized parameters. Scanning electron microscope analysis used investigate improvement microstructure by CNTs. Transmission micrographs polyvinyl pyrrolidone (PVP)-CNT exhibited a uniformly distributed cross-linked network. absorbance reduction ratio PVP-CNT after standing for 90 days 13.75 22.41%, respectively. first increased then decreased with increasing dispersant ultrasonic time power ratio. Compared that plain concrete, compressive strength CNTC improved, maximum increase 18.15% when content 0.10%, failure mode typical shear characteristics. PVP-to-multiwalled mass 4:1, an 20 min, 60%. These are ideal choices preparing cement-based composite suspensions.

Language: Английский

Study of transport and binding behavior of chloride ions in concrete under single-sided salt-freezing cycle DOI

Xiuli Du,

Gang Li,

Aoli Cao

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 471, P. 140749 - 140749

Published: March 12, 2025

Language: Английский

Citations

0
Comparison of performance, hydration behavior, and environmental benefits of coal gangue cementitious materials prepared by wet and dry grinding methods DOI

Haolong Guo,

Hailong Wang, Hao Li

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 471, P. 140665 - 140665

Published: March 11, 2025

Language: Английский

Citations

0
Molecular dynamics investigation on the crack-bridging role of coated graphene oxide on steel fiber reinforced concrete DOI

Jianxiong Miao,

Junxiang Hu,

Shuaijie Lu

et al.

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: 22, P. e04689 - e04689

Published: April 21, 2025

Language: Английский

Citations

0
Enhancing the Resilience of Cement Mortar: Investigating Nano-SiO2 Size and Hybrid Fiber Effects on Sulfuric Acid Resistance DOI
Zehra Funda Akbulut, Soner Güler

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 98, P. 111187 - 111187

Published: Nov. 7, 2024

Language: Английский

Citations

1
Optimization of preparation parameters and testing verification of carbon nanotube suspensions used in concrete DOI Creative Commons

Shan-Xiu Huang,

Huikuan Li,

Fenghui Gao

et al.

Nanotechnology Reviews, Journal Year: 2024, Volume and Issue: 13(1)

Published: Jan. 1, 2024

Abstract Carbon nanotubes (CNTs) have received extensive attention due to their exceptional properties and wide range of applications. However, the agglomeration CNTs in aqueous solutions organic solvents significantly limits large-scale application. In this study, microscopic morphology dispersion stability CNT suspensions were analyzed, most suitable surfactant study was selected. The preparation parameters optimized, uniaxial compression tests conducted on carbon nanotube concrete (CNTC) prepared using optimized parameters. Scanning electron microscope analysis used investigate improvement microstructure by CNTs. Transmission micrographs polyvinyl pyrrolidone (PVP)-CNT exhibited a uniformly distributed cross-linked network. absorbance reduction ratio PVP-CNT after standing for 90 days 13.75 22.41%, respectively. first increased then decreased with increasing dispersant ultrasonic time power ratio. Compared that plain concrete, compressive strength CNTC improved, maximum increase 18.15% when content 0.10%, failure mode typical shear characteristics. PVP-to-multiwalled mass 4:1, an 20 min, 60%. These are ideal choices preparing cement-based composite suspensions.

Language: Английский

Citations

0