H. Toutanji et Z. Bayasi, EFFECTS OF MANUFACTURING TECHNIQUES ON THE FLEXURAL BEHAVIOR OF STEELFIBER-REINFORCED CONCRETE, Cement and concrete research, 28(1), 1998, pp. 115-124
Citations number
15
Categorie Soggetti
Construcion & Building Technology","Material Science
This paper presents experimental research investigating the effects of
manufacturing techniques on the mechanical properties of steel fiber-
reinforced concrete. Both the effects of curing environments and that
of testing direction relative to casting direction on the mechanical p
roperties of fiber-reinforced concrete are reported. Specimens were cu
red in three different environmental conditions: steam, moisture, and
air. Results show that steam curing, as compared to moisture curing, d
oes not enhance the flexural strength of steel fibrous concrete but do
es reduce flexural toughness. As expected, air curing shows detrimenta
l effects on all aspects of the test results, as compared to steam and
moisture curing. The flexural behavior of steel fiber-reinforced conc
rete is strongly affected by testing direction. When testing direction
is perpendicular to casting direction, specimens exhibit reductions i
n both flexural strength and toughness compared to the case when testi
ng and casting directions are parallel. The effect of testing directio
n relative to casting direction on flexural strength and toughness inc
reases with increasing the flowability (workability) of the fibrous mi
xture, which encourages fiber settlement during placement. (C) 1998 El
sevier Science Ltd.