Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/40049

TitleAn experimental investigation on nano-TiO2 and fly ash based high performance concrete
Author(s)Martins, Tiago Manuel da Rocha
Torgal, Fernando Manuel Alves Silva Pacheco
Miraldo, Sérgio
Aguiar, J. L. Barroso de
Jesus, Carlos Manuel Gonçalves
KeywordsCompressive strength
Cost
Durability
Fly-ash TiO2 nanoparticles
HPC
Portland cement
Fly-ash
TiO nanoparticles 2
Issue dateJan-2016
PublisherACC Limited
JournalThe Indian Concrete Journal
CitationMartins T., Torgal F. P., Miraldo S., Aguiar J., Jesus C. An experimental investigation on nano-TiO2 and fly ash based high performance concrete, The Indian Concrete Journal, 2016
Abstract(s)High performance concrete (HPC) offers several advantages over normal-strength concrete, namely, high mechanical strength and high durability. Therefore, HPC allows for concrete structures with less steel reinforcement and a longer service life, both of which are crucial issues in the eco-efficiency of construction materials. Nevertheless international publications on the field of concrete containing nanoparticles are scarce when compared to Portland cement concrete (around 1%) of the total international publications. HPC nanoparticle-based publications are even scarcer. This article presents the results of an experimental investigation on the mechanical properties and durability of HPC based on nano-TiO2 and fly ash. The durability performance was assessed by means of water absorption by immersion, water absorption by capillarity, ultrasonic pulse velocity, electric resistivity, chloride diffusion and resistance to sulphuric acid attack. The results show that the concretes containing an increased content of nano-TiO2 show decreased durability performance. The results also show that concrete with 1% nano-TiO2 and 30% fly ash as Portland cement replacement show a high mechanical strength (C55/C67) and a high durability. However, it should be noted that the cost of nano-TiO2 is responsible for a severe increase in the cost of concrete mixtures.
Typearticle
URIhttp://hdl.handle.net/1822/40049
ISSN0019-4565
Publisher versionwww.icjonline.com
Peer-Reviewedyes
AccessopenAccess
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat 
2205-1391 -Martins et al..pdf981,76 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu Currículo DeGóis