이한승
2019-02-25T06:15:30Z
2019-02-25T06:15:30Z
2018-01
CONSTRUCTION AND BUILDING MATERIALS, v. 159, Page. 463-472
0950-0618
1879-0526
https://www.sciencedirect.com/science/article/pii/S0950061817322109
https://repository.hanyang.ac.kr/handle/20.500.11754/99200
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.
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, & Future Planning (No. 2015R1A5A1037548). One of the authors (V.S) thanks to the Director, CECRI, and CSIR for the permission to pursue my fellowship at Hanyang University, Korea.
en_US
ELSEVIER SCI LTD
Nano silica
Carbon nanotube
Rock dust
Strength
Durability
Electrochemical studies
Durability performance of CNT and nanosilica admixed cement mortar
Article
2018
159
10.1016/j.conbuildmat.2017.11.003
463-472
CONSTRUCTION AND BUILDING MATERIALS
Lee, Han Seung
Balasubramanian, B.
Gopalakrishna, G.V.T.
Kwon, Seung-Jun
Karthick, S.P.
Saraswathy, V.
2018006823
E
COLLEGE OF ENGINEERING SCIENCES[E]
DIVISION OF ARCHITECTURE
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