TY - JOUR
T1 - Re-evaluation of fibre-reinforced concrete tension model in CEB-FIP Model Code 2010
AU - Lee, S. C.
N1 - Publisher Copyright:
© W. S. Maney & Son Ltd 2015.
PY - 2015/11
Y1 - 2015/11
N2 - Recently, the CEB-FIP Model Code 2010 (MC10) provided a fibre-reinforced concrete tension model by which to evaluate the tensile behaviour of fibre-reinforced concrete, so that the tensile contribution achieved by fibres can be acknowledged in the design of concrete structures. In this model, the tensile behaviour of fibre-reinforced concrete is evaluated using a bending test of fibre-reinforced concrete beams with a notch, but there are still some deficiencies. For example, the effect of fibre type on the tensile behaviour is not considered. In this paper, therefore, the fibre-reinforced concrete tension model in MC10 has been re-evaluated, focused on the effect of fibre type. From the tensile behaviour of fibre-reinforced concrete predicted by the simplified diverse embedment model, fibre-reinforced concrete beams were analysed to derive the tensile behaviour of fibre-reinforced concrete by following the procedure presented in MC10. From comparison of the predictions with test results, it was determined that MC10 underestimates the tensile stress due to end-hooked fibres; while it overestimated the tensile stress due to straight fibres, when crack width was relatively small. Therefore, it can be concluded that the fibre-reinforced concrete tension model in MC10 can be improved by considering the effect of fibre type.
AB - Recently, the CEB-FIP Model Code 2010 (MC10) provided a fibre-reinforced concrete tension model by which to evaluate the tensile behaviour of fibre-reinforced concrete, so that the tensile contribution achieved by fibres can be acknowledged in the design of concrete structures. In this model, the tensile behaviour of fibre-reinforced concrete is evaluated using a bending test of fibre-reinforced concrete beams with a notch, but there are still some deficiencies. For example, the effect of fibre type on the tensile behaviour is not considered. In this paper, therefore, the fibre-reinforced concrete tension model in MC10 has been re-evaluated, focused on the effect of fibre type. From the tensile behaviour of fibre-reinforced concrete predicted by the simplified diverse embedment model, fibre-reinforced concrete beams were analysed to derive the tensile behaviour of fibre-reinforced concrete by following the procedure presented in MC10. From comparison of the predictions with test results, it was determined that MC10 underestimates the tensile stress due to end-hooked fibres; while it overestimated the tensile stress due to straight fibres, when crack width was relatively small. Therefore, it can be concluded that the fibre-reinforced concrete tension model in MC10 can be improved by considering the effect of fibre type.
KW - Bending test
KW - Fibre
KW - Fibre tension model
KW - Fibre type
KW - Tensile stress
UR - http://www.scopus.com/inward/record.url?scp=84948167472&partnerID=8YFLogxK
U2 - 10.1179/1432891715Z.0000000001632
DO - 10.1179/1432891715Z.0000000001632
M3 - Article
AN - SCOPUS:84948167472
SN - 1432-8917
VL - 19
SP - 107
EP - 110
JO - Materials Research Innovations
JF - Materials Research Innovations
ER -