@JournalArticle {2205,
	title = {An experimental investigation on nano-TiO2 and fly ash based high performance concrete},
	journal = {Indian Concrete Journal},
	year = {2016},
	month = {2016-01-01 00:00:00},
	publisher = {ACC Limited},
	abstract = {
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.
},
	keywords = {Compressive strength, cost, Durability, fly-ash TiO2 nanoparticles, HPC, Portland cement},
	issn = {0019-4565},
	url = {http://www.icjonline.com/icj_z_Home_techPapers_view_results_detail.asp?ID=123\&mVarTable=[TechnicalPaper]},
	author = {Martins, T. and Pacheco-Torgal, F. and Miraldo, S. and Aguiar, J. B. and Jesus, C.}
}