Rheological, mechanical and durability properties of self-compacting mortar containing nano-TiO2 and fly ash

Mehrinejad Khotbehsara, Mojdeh and Zadshir, Mehdi and Mehdizadeh Miyandehi, Bahareh and Mohseni, Ehsan and Rahmannia, Samaneh and Fathi, Shadi (2014) Rheological, mechanical and durability properties of self-compacting mortar containing nano-TiO2 and fly ash. Journal of American Science, 10 (11). pp. 222-228. ISSN 1545-1003

Abstract

The present study investigates the compressive strength, water absorption, electrical resistivity, and chloride permeability of self-compacting mortar (SCM) specimens containing fly ash and nano-TiO2 (NT). Portland cement has been replaced by 1, 2, 3, 4 and 5wt% TiO2 nanoparticles and then fly ash (FA) with the ratio of 25% of the weight of cement was constantly added. Rheological, mechanical and durability properties of the produced samples were assessed. Water absorption, electrical resistivity, and rapid chloride permeability tests (RCPT) were conducted to determine the durability properties of SCMs. The results show that the presence of the nanoparticles could enhance the mechanical properties and durability of specimens. In terms of compressive strength the greatest result was obtained by mixtures containing 5wt% of nano-TiO2 while specimens involved 4wt% NT had the best result in water absorption and electrical resistivity and also the highest chloride permeability improvement was observed through 5wt% replacement of nanoparticles. On the whole, it can be concluded that the properties of mixtures have been significantly improved by replacing cement with nano-TiO2.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 24 Jul 2017 00:15
Last Modified: 17 Aug 2017 05:13
Uncontrolled Keywords: nanomaterial; self-compacting mortar; fresh and mechanical properties; electrical resistivity; rapid chloride permeability test
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/32740

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