Micro and Nano Engineered High Volume Ultrafine Fly Ash Cement Composite with and without Additives

Roychand, R, De Silva, S, Law, D and Setunge, S 2016, 'Micro and Nano Engineered High Volume Ultrafine Fly Ash Cement Composite with and without Additives', International Journal of Concrete Structures and Materials, vol. 10, no. 1, pp. 113-124.


Document type: Journal Article
Collection: Journal Articles

Attached Files
Name Description MIMEType Size
n2006058333.pdf Published Version application/pdf 3.85MB
Title Micro and Nano Engineered High Volume Ultrafine Fly Ash Cement Composite with and without Additives
Author(s) Roychand, R
De Silva, S
Law, D
Setunge, S
Year 2016
Journal name International Journal of Concrete Structures and Materials
Volume number 10
Issue number 1
Start page 113
End page 124
Total pages 12
Publisher Han-gug Konkeuliteu Haghoe
Abstract This paper presents the effect of silica fume and nano silica, used individually and in combination with the set accelerator and/or hydrated lime, on the properties of class F high volume ultra fine fly ash (HV-UFFA) cement composites, replacing 80 % of cement (OPC). Compressive strength test along with thermogravimetric analysis, X-ray diffraction and scanning electron microscopy were undertaken to study the effect of various elements on the physico-chemical behaviour of the blended composites. The results show that silica fume when used in combination with the set accelerator and hydrated lime in HV-UFFA cement mortar, improves its 7 and 28 day strength by 273 and 413 %, respectively, compared to the binary blended cement fly ash mortar. On the contrary, when nano silica is used in combination with set accelerator and hydrated lime in HV-UFFA cement mortar, the disjoining pressure in conjunction with the self-desiccation effect induces high early age micro cracking, resulting in hindering the development of compressive strength. However, when nano silica is used without the additives, it improves the 7 and 28 day strengths of HV-UFFA cement mortar by 918 and 567 %, respectively and the compressive strengths are comparable to that of OPC.
Subject Construction Materials
Keyword(s) Nano silica
Silica fume
Fly ash
Additives
X-ray diffraction
Scanning electron microscopy
DOI - identifier 10.1007/s40069-015-0122-7
Copyright notice © The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
ISSN 1976-0485
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
Altmetric details:
Access Statistics: 58 Abstract Views, 9 File Downloads  -  Detailed Statistics
Created: Wed, 03 Feb 2016, 09:16:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us