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Tensile Properties of an Engineered Cementitious Composite Shotcrete Mix
Results are presented for a series of laboratory tests that were undertaken to characterize the tensile properties of an engineered cementitious composite (ECC) mix, which is a mortar-based composite reinforced with synthetic fibers to provide tensile strain–hardening characteristics. Dogbone-, rectangular-, and circular-bar-shaped specimens were developed to determine the most suitable specimen geometry for uniaxial tensile testing (UTT), with the circular-bar specimens that were constructed by coring through sprayed ECC panels showing the best geometrical consistency, both within each specimen and between individual specimens. Fifty circular-bar specimens with a diameter of 16 mm and a length of 200 mm were tested under uniaxial tension to determine the characteristic tensile properties. Statistical distributions were used to define a 5% characteristic tensile yield strength of 1.82 MPa and a 10% tensile total strain of 0.08%. A material ductility factor of 4.0 was determined, and factors are proposed to convert quality assurance test mean values to characteristic values.
Tensile Properties of an Engineered Cementitious Composite Shotcrete Mix
Results are presented for a series of laboratory tests that were undertaken to characterize the tensile properties of an engineered cementitious composite (ECC) mix, which is a mortar-based composite reinforced with synthetic fibers to provide tensile strain–hardening characteristics. Dogbone-, rectangular-, and circular-bar-shaped specimens were developed to determine the most suitable specimen geometry for uniaxial tensile testing (UTT), with the circular-bar specimens that were constructed by coring through sprayed ECC panels showing the best geometrical consistency, both within each specimen and between individual specimens. Fifty circular-bar specimens with a diameter of 16 mm and a length of 200 mm were tested under uniaxial tension to determine the characteristic tensile properties. Statistical distributions were used to define a 5% characteristic tensile yield strength of 1.82 MPa and a 10% tensile total strain of 0.08%. A material ductility factor of 4.0 was determined, and factors are proposed to convert quality assurance test mean values to characteristic values.
Tensile Properties of an Engineered Cementitious Composite Shotcrete Mix
Lin, Yi-Wei (author) / Wotherspoon, Liam (author) / Ingham, Jason M. (author)
2014-09-02
Article (Journal)
Electronic Resource
Unknown
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