Title: Preparation and mechanical properties of carbon nanotube cement-based composite materials for construction

Authors: Shaowei Chen; Yanhua Li

Addresses: College of Architecture, Xinxiang Vocational and Technical College, Xinxiang, 453006, China ' College of Architecture, Xinxiang Vocational and Technical College, Xinxiang, 453006, China

Abstract: This study aims to investigate the preparation and mechanical properties of carbon nanotube cement-based composite materials for construction. Firstly, graphene nanosheets (GNP), multi walled carbon nanotubes (CNTs), polycarboxylic acid water reducing agents, and benchmark cement were selected to prepare carbon nanotube cement-based composite materials for construction. Then, the mechanical properties of the prepared specimens were verified. The test results show that when carbon nanotubes are 0.1% and silica fume is 5%, the composite material can achieve the maximum compressive strength (116.5 MPa), and the energy storage capacity of the composite material is increased by 12% compared to cement paste. When 0.1% carbon nanotubes and 10% silica fume are added, the composite material can achieve the maximum flexural strength (11.5 MPa), and the loss factor of the composite material is effectively improved, with a maximum increase of 22.59% compared to cement paste.

Keywords: polycarboxylic acid water reducing agent; bending strength; mechanical properties; composite materials.

DOI: 10.1504/IJMMP.2024.142803

International Journal of Microstructure and Materials Properties, 2024 Vol.17 No.4, pp.377 - 391

Received: 19 Oct 2023
Accepted: 07 Feb 2024
Published online: 22 Nov 2024 *

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