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混合碳纳米管和石墨纳米片对自密实水泥砂浆流变学、收缩、力学性能及微观结构影响的试验研究

Experimental Investigation of Hybrid Carbon Nanotubes and Graphite Nanoplatelets on Rheology, Shrinkage, Mechanical, and Microstructure of SCCM.

作者信息

Farooq Furqan, Akbar Arslan, Khushnood Rao Arsalan, Muhammad Waqas Latif Baloch, Rehman Sardar Kashif Ur, Javed Muhammad Faisal

机构信息

School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 46000, Pakistan.

Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China.

出版信息

Materials (Basel). 2020 Jan 4;13(1):230. doi: 10.3390/ma13010230.

DOI:10.3390/ma13010230
PMID:31948005
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6981436/
Abstract

Carbon nanotubes (CNTs) and graphite nanoplatelets (GNPs) belong to the family of graphite nanomaterials (GNMs) and are promising candidates for enhancing properties of cementitious matrix. However, the problem lies with their improper dispersion. In this paper graphite nanoplatelets are used with carbon nanotubes for dispersion facilitation of CNTs in cement mortar. The intended role is to use the GNPs particles for dispersion of CNTs and to investigate the synergistic effect of resulting nano-intruded mortar. Mechanical properties such as flexure and compressive strength have been studied along with volumetric stability, rheology, and workability. Varying dosages of CNTs to GNPs have been formulated and were analyzed. The hybrid use of CNTs-GNPs shows promise. Scanning electron microscopy reveals that hybrid CNTs/GNPs are well-suited for use in cement mortar composite performing a dual function.

摘要

碳纳米管（CNTs）和石墨纳米片（GNPs）属于石墨纳米材料（GNMs）家族，是增强水泥基材料性能的有潜力的候选材料。然而，问题在于它们的分散性不佳。本文将石墨纳米片与碳纳米管一起使用，以促进碳纳米管在水泥砂浆中的分散。预期的作用是利用石墨纳米片颗粒来分散碳纳米管，并研究所得纳米增强砂浆的协同效应。研究了诸如抗折强度和抗压强度等力学性能，以及体积稳定性、流变学和工作性。配制并分析了不同剂量的碳纳米管与石墨纳米片。碳纳米管与石墨纳米片的混合使用显示出前景。扫描电子显微镜表明，混合的碳纳米管/石墨纳米片非常适合用于具有双重功能的水泥砂浆复合材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8075/6981436/770fa66cddee/materials-13-00230-g020.jpg
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