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Durability performance of CNT and nanosilica admixed cement mortar

Title
Durability performance of CNT and nanosilica admixed cement mortar
Author
이한승
Keywords
Nano silica; Carbon nanotube; Rock dust; Strength; Durability; Electrochemical studies
Issue Date
2018-01
Publisher
ELSEVIER SCI LTD
Citation
CONSTRUCTION AND BUILDING MATERIALS, v. 159, Page. 463-472
Abstract
In the recent years, development and use of nanomaterials are gaining importance in the construction industries due to the advancement of science and technology. In the present investigation, nanosilica (NS) was synthesized from rice husk ash and characterized using XRD, Particle size analysis and SEM techniques. 1% NS by weight was used in cement mortar along with carbon nano tube (0.01%-0.07%) as a cement replacement materials and rock dust (RD) was used as a replacement for river sand. Five different mix combinations were formulated. Polycarboxylate based water reducing admixture was used for improving the workability of the mix. All the combination of mixes derived were subjected to compression, split tensile test, and durability studies such as sorptivity, water absorption, and chloride penetration test. Potentiodynamic polarization study was carried out to understand the corrosion performance of the composite cement mortar. SEM and XRD studies were carried out for the hydrated products of the composite cement mortar. The results showed that NS and CNT increased the compressive strength by 12%-76% and enhanced the corrosion resistance properties than the control. (C) 2017 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0950061817322109http://repository.hanyang.ac.kr/handle/20.500.11754/99200
ISSN
0950-0618; 1879-0526
DOI
10.1016/j.conbuildmat.2017.11.003
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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