@conference {SIEEUM4425,
	title = {Comparative study between polymeric superplasticizers},
	journal = {8th International Symposium on Utilization of High-Strength and High-Performance Concrete},
	year = {2008},
	month = {2008-01-01 00:00:00},
	pages = {246{\textendash}250},
	address = {Tokyo Japan},
	keywords = {Air content, Compressive strength, Concrete performance, Superplasticizers, Workability},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=4425},
	author = {Aguiar, J. B. and Pires, P. and Machado, A. V. and Ferreira, R. M. and Azevedo, I.}
}