H. Toutanji et al., CHLORIDE PERMEABILITY AND IMPACT RESISTANCE OF POLYPROPYLENE-FIBER-REINFORCED SILICA FUME CONCRETE, Cement and concrete research, 28(7), 1998, pp. 961-968
Citations number
15
Categorie Soggetti
Construcion & Building Technology","Material Science
Permeability and imp act resistance of polypropylene-fiber-reinforced
concrete mixtures containing silica fume with variable design proporti
ons were studied. Two fiber lengths were considered, 12.5 and 19 mm, a
nd four fiber volume fractions, 0, 0.1%, 0.3%, and 0.5%. Silica fume w
as used as a replacement by weight of cement. Two silica fume contents
were used, 5% and 10%. Results showed that the incorporation of polyp
ropylene fibers increased the permeability of conventional concrete. T
he addition of silica fume improved fiber dispersion in the cementitio
us matrix, causing a significant reduction in the permeability of the
polypropylene fiber reinforced concrete. Moreover, the addition of sil
ica fume was noted to significantly enhance the polypropylene fiber ef
fectiveness in improving the impact resistance of concrete. (C) 1998 E
lsevier Science Ltd.