Chloride permeability and impact resistance of polypropylene-fiber-reinforced silica fume concrete

Journal Article · Wed Jul 01 04:00:00 EDT 1998 · Cement and Concrete Research

DOI:https://doi.org/10.1016/S0008-8846(98)00073-8· OSTI ID:642128

Toutanji, H; McNeil, S ^[1]; Bayasi, Z ^[2]

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1. Univ. of Alabama, Huntsville, AL (United States)
2. San Diego State Univ., CA (United States)

Permeability and impact resistance of polypropylene-fiber-reinforced concrete mixtures containing silica fume with variable design proportions were studied. Two fiber lengths were considered, 12.5 and 19 mm, and four fiber volume fractions, 0, 0.1%, 0.3%, and 0.5%. Silica fume was used as a replacement by weight of cement. Two silica fume contents were used, 5% and 10%. Results showed that the incorporation of polypropylene fibers increased the permeability of conventional concrete. The addition of silica fume improved fiber dispersion in the cementitious matrix, causing a significant reduction in the permeability of the polypropylene fiber reinforced concrete. Moreover, the addition of silica fume was noted to significantly enhance the polypropylene fiber effectiveness in improving the impact resistance of concrete.

• OSTI ID: 642128
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 7 Vol. 28; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHLORIDES
CONCENTRATION RATIO
IMPACT STRENGTH
PERMEABILITY
POLYPROPYLENE
REINFORCED CONCRETE
SILICA