دورية أكاديمية
Eco-friendly treatment of carbon nanofibers in cementitious materials for better performance
| العنوان: | Eco-friendly treatment of carbon nanofibers in cementitious materials for better performance |
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| المؤلفون: | Xin Qian, Heng Yang, Jialai Wang, Yi Fang, Mengxiao Li |
| المصدر: | Case Studies in Construction Materials, Vol 16, Iss , Pp e01126- (2022) |
| بيانات النشر: | Elsevier, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: | Carbon nanofibers, Tannic acid, Ordinary Portland cement, Dispersion, Mechanical properties, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: | Extensive studies have been carried out to use carbon nanofibers/tubes (CNF/Ts) to reinforce cementitious materials because of their extraordinary properties (mechanical, electrical, energy storage). However, the high surface area of CNF/Ts makes them difficult to disperse in cementitious materials homogenously, leading to inefficient use of CNF/Ts. In this study, an eco-friendly method is proposed to functionalize CNFs so that they can be easily dispersed into cementitious materials. This method uses a plant-based biomolecule, tannic acid (TA), to modify CNFs. Compared with existing chemicals used to functionalize CNFs, TA is ubiquitous, renewable, and non-toxic. Experimental studies show that the TA can be successfully coated onto the surface of CNFs, making them stabilized in the water-based solution. SEM analysis suggests that a better dispersion of CNFs was achieved in the hydrated cement paste with TA functionalization compared to the one prepared with pristine CNFs. The homogenous dispersion also makes the nanofibers available to fill the nanopores, leading to a densified microstructure, as proved by MIP analysis. As a result, significant improvement in the mechanical properties of cement mortar has been achieved by using TA functionalization. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2214-5095 67418082 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2214509522002583; https://doaj.org/toc/2214-5095 |
| DOI: | 10.1016/j.cscm.2022.e01126 |
| URL الوصول: | https://doaj.org/article/b29aad255f67418082a9b8827d64782a |
| رقم الأكسشن: | edsdoj.b29aad255f67418082a9b8827d64782a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22145095 67418082 |
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| DOI: | 10.1016/j.cscm.2022.e01126 |