Abstract
Carbon nanotube (CNT) is a promising nanomaterial with excellent mechanical, electrical, thermal, and chemical stability. It has received extensive attention due to its unique multifunctional properties in engineering materials. Researchers have explored the preparation and characterization of CNT reinforced cement-based materials. Studies have shown that adding CNT will significantly improve the performance of cement-based materials. This article introduces the techniques for the dispersion characterization of CNT and summarizes the advantages and disadvantages of these techniques. The functionalized applications of CNT in cement-based materials are reviewed, including sensing performance, structural health monitoring of concrete, electromagnetic shielding, and other applications. In addition, the application and development prospects of CNT in 3D printing concrete have been prospected. Finally, we discussed the existing problems and challenges in developing and applying CNT in cement-based materials and suggested future research.
Highlights
Concrete is a widely used building material in the construction field, with low cost and stable performance
Many factors affected the smart properties during the preparation and application of CNT reinforced functional cement-based materials, such as curing age, relative humidity, temperature, electrode arrangement, and resistivity measurement methods
The production cost of carbon materials is high, and the production process is complicated. These are the factors that restrict the use of CNT to enhance concrete in 3D printing concrete (3DPC)
Summary
Carbon nanotube (CNT) is a promising nanomaterial with excellent mechanical, electrical, thermal, and chemical stability. It has received extensive attention due to its unique multifunctional properties in engineering materials. Researchers have explored the preparation and characterization of CNT reinforced cement-based materials. Studies have shown that adding CNT will significantly improve the performance of cementbased materials. This article introduces the techniques for the dispersion characterization of CNT and summarizes the advantages and disadvantages of these techniques. The functionalized applications of CNT in cement-based materials are reviewed, including sensing performance, structural health monitoring of concrete, electromagnetic shielding, and other applications. The application and development prospects of CNT in 3D printing concrete have been prospected. We discussed the existing problems and challenges in developing and applying CNT in cement-based materials and suggested future research
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