Journal Published Online: 02 December 2024
Volume 53, Issue 1

Optimization of Mechanics and Rheology of Grouting Materials Based on Carbon Nanotubes

CODEN: JTEVAB

Abstract

As one of the pillar industries of the national economy, the construction industry has increasingly high requirements for the performance of grouting materials. To overcome the shortcomings of low tensile strength and poor toughness of grouting materials, this study selects raw materials such as quartz powder and completes the ultra-fine grouting material ratio through the theory of slurry filling and wrapping. Carbon nanotubes are used to improve the performance of the grouting material. The results indicated that in mechanical performance testing, as the content of carbon nanotubes increased, the strength first increased and then decreased. Among them, when the dosage was 0.1–0.2 %, the flexural strength and compressive strength had the highest increase of 33.62 % and 29.30 %, respectively, with the best reinforcement effect. In terms of rheological properties, the grouting materials were adversely affected by dispersants. The addition of carbon nanotubes increased its yield stress and plastic viscosity with increasing dosage. However, at the appropriate dosage, the normal flow performance and compressive strength were effectively guaranteed. As the diameter of carbon nanotubes increased, the impact of carbon nanotubes on the viscosity of the grouting material decreased. Furthermore, the effect of diameter changes was more pronounced. As a result, carbon nanotubes have optimized the mechanical properties and rheological properties of the grouting material, providing a reliable reference for engineering applications.

Author Information

Liu, Jingyi
School of Surveying and Testing, Shaanxi Railway Institute, Weinan, Shaan Xi, P.R. China
Wang, Yongwei
School of Surveying and Testing, Shaanxi Railway Institute, Weinan, Shaan Xi, P.R. China
Gao, Ni
School of Surveying and Testing, Shaanxi Railway Institute, Weinan, Shaan Xi, P.R. China
Liu, Kaiping
School of Material Science and Engineering, Chang’an University, Xi’an, Shaan Xi, P.R. China
Wen, Jiuran
School of Material Science and Engineering, Chang’an University, Xi’an, Shaan Xi, P.R. China
Pages: 14
Price: $25.00
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Stock #: JTE20240264
ISSN: 0090-3973
DOI: 10.1520/JTE20240264