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Properties of fibre reinforced lightweight aggregate concrete
This paper presents the response of fibre reinforced lightweight aggregate concrete under short-term loading. Study parameters include fibre content and strength of concrete. Leca lightweight coarse aggregate (expanded clay) was used to produce LWAC (lightweight aggregate concrete). Round and hook-end steel fibres with 30 mm in length and 0.375 mm in diameter were added to concrete mixtures. Volume fractions of fibre used were 0.5 %, 0.75 %, 1 % and 1.3 % by volume of concrete. Three different mortar matrices were produced to vary the strength of concrete. Compressive strength of concrete varies from 55 MPa to 71 MPa. This study explores the influence of steel fibres on properties of LWAC, namely, compressive strength, initial modulus of elasticity, strain at peak stress level, ductile behavior, failure mode, splitting tensile strength and oven-dried density. Test results show that the beneficial effect of fibre addition on strength enhancement is more pronounced in splitting tensile strength compared to compressive strength. It has also been observed that ductility of LWAC increases with increasing amount of fibre content. However, fibre content should not exceed the optimum amount. For the material used in this study, optimum amount of fibre content is 1 % for lower strength concrete, while optimum amount decreases to 0.5% for higher strength concrete.
Properties of fibre reinforced lightweight aggregate concrete
This paper presents the response of fibre reinforced lightweight aggregate concrete under short-term loading. Study parameters include fibre content and strength of concrete. Leca lightweight coarse aggregate (expanded clay) was used to produce LWAC (lightweight aggregate concrete). Round and hook-end steel fibres with 30 mm in length and 0.375 mm in diameter were added to concrete mixtures. Volume fractions of fibre used were 0.5 %, 0.75 %, 1 % and 1.3 % by volume of concrete. Three different mortar matrices were produced to vary the strength of concrete. Compressive strength of concrete varies from 55 MPa to 71 MPa. This study explores the influence of steel fibres on properties of LWAC, namely, compressive strength, initial modulus of elasticity, strain at peak stress level, ductile behavior, failure mode, splitting tensile strength and oven-dried density. Test results show that the beneficial effect of fibre addition on strength enhancement is more pronounced in splitting tensile strength compared to compressive strength. It has also been observed that ductility of LWAC increases with increasing amount of fibre content. However, fibre content should not exceed the optimum amount. For the material used in this study, optimum amount of fibre content is 1 % for lower strength concrete, while optimum amount decreases to 0.5% for higher strength concrete.
Properties of fibre reinforced lightweight aggregate concrete
Eigenschaften von faserverstärktem Beton mit Leichtzuschlagstoffen
Myat, M.H. (author) / Wee, T.H. (author)
2007
8 Seiten, 5 Bilder, 3 Tabellen, 5 Quellen
Conference paper
English
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