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Prediction of compressive strength and elastic modulus for ultra-high-performance concrete
https://orcid.org/0000-0001-6151-9496
https://orcid.org/0000-0003-2575-0273
Highlights Through the compression tests of cylindrical UHPC with fiber volume fractions 0% to 2%, the effect of the fiber volume fraction on the failure mode, volume change, peak compressive strength, and elastic modulus was investigated. This study suggests that the compressive strength of the UHPC with steel fibers is a function of the compressive strength of the UHPC without steel fibers, based on the 140 existing test data sets; the relation is presented as fcf = 1.06fc0. The design elastic modulus is proposed as Ecd = 3,565√fcf using the average strength (=174.6 MPa) for 253 collected data sets with a compressive strength ranging from 120 to 255.9 MPa.
Abstract This study conducted compression tests to assess the behavior of ultra-high-performance concrete (UHPC) subjected to uniaxial compression. The primary test parameter is the fiber volume fraction in the 0 % to 2 % range. According to the test results, the presence of steel fibers in the matrix significantly affected the failure mode of UHPC. However, the compressive behavior of the test specimens appeared to be very similar, regardless of the fiber volume fraction. The compressive strength of UHPC was improved by approximately 10 % by the addition of the steel fibers. However, the fiber volume fraction and transverse strain had a strong association. The steel fibers significantly affected the volume change of the UHPC. Based on the test results and numerous test data sets, this study suggests that the compressive strength of the UHPC with steel fibers is a function of the UHPC compressive strength without steel fibers and design compressive strength. In addition, the elastic modulus for design is suggested. The proposed equations are applicable for the design and analysis of the UHPC with a fiber volume fraction of up to 6 % and a compressive strength between 120 and 255.9 MPa.
Prediction of compressive strength and elastic modulus for ultra-high-performance concrete
https://orcid.org/0000-0001-6151-9496
https://orcid.org/0000-0003-2575-0273
Highlights Through the compression tests of cylindrical UHPC with fiber volume fractions 0% to 2%, the effect of the fiber volume fraction on the failure mode, volume change, peak compressive strength, and elastic modulus was investigated. This study suggests that the compressive strength of the UHPC with steel fibers is a function of the compressive strength of the UHPC without steel fibers, based on the 140 existing test data sets; the relation is presented as fcf = 1.06fc0. The design elastic modulus is proposed as Ecd = 3,565√fcf using the average strength (=174.6 MPa) for 253 collected data sets with a compressive strength ranging from 120 to 255.9 MPa.
Abstract This study conducted compression tests to assess the behavior of ultra-high-performance concrete (UHPC) subjected to uniaxial compression. The primary test parameter is the fiber volume fraction in the 0 % to 2 % range. According to the test results, the presence of steel fibers in the matrix significantly affected the failure mode of UHPC. However, the compressive behavior of the test specimens appeared to be very similar, regardless of the fiber volume fraction. The compressive strength of UHPC was improved by approximately 10 % by the addition of the steel fibers. However, the fiber volume fraction and transverse strain had a strong association. The steel fibers significantly affected the volume change of the UHPC. Based on the test results and numerous test data sets, this study suggests that the compressive strength of the UHPC with steel fibers is a function of the UHPC compressive strength without steel fibers and design compressive strength. In addition, the elastic modulus for design is suggested. The proposed equations are applicable for the design and analysis of the UHPC with a fiber volume fraction of up to 6 % and a compressive strength between 120 and 255.9 MPa.
Prediction of compressive strength and elastic modulus for ultra-high-performance concrete
https://orcid.org/0000-0001-6151-9496
https://orcid.org/0000-0003-2575-0273
Highlights Through the compression tests of cylindrical UHPC with fiber volume fractions 0% to 2%, the effect of the fiber volume fraction on the failure mode, volume change, peak compressive strength, and elastic modulus was investigated. This study suggests that the compressive strength of the UHPC with steel fibers is a function of the compressive strength of the UHPC without steel fibers, based on the 140 existing test data sets; the relation is presented as fcf = 1.06fc0. The design elastic modulus is proposed as Ecd = 3,565√fcf using the average strength (=174.6 MPa) for 253 collected data sets with a compressive strength ranging from 120 to 255.9 MPa.
Abstract This study conducted compression tests to assess the behavior of ultra-high-performance concrete (UHPC) subjected to uniaxial compression. The primary test parameter is the fiber volume fraction in the 0 % to 2 % range. According to the test results, the presence of steel fibers in the matrix significantly affected the failure mode of UHPC. However, the compressive behavior of the test specimens appeared to be very similar, regardless of the fiber volume fraction. The compressive strength of UHPC was improved by approximately 10 % by the addition of the steel fibers. However, the fiber volume fraction and transverse strain had a strong association. The steel fibers significantly affected the volume change of the UHPC. Based on the test results and numerous test data sets, this study suggests that the compressive strength of the UHPC with steel fibers is a function of the UHPC compressive strength without steel fibers and design compressive strength. In addition, the elastic modulus for design is suggested. The proposed equations are applicable for the design and analysis of the UHPC with a fiber volume fraction of up to 6 % and a compressive strength between 120 and 255.9 MPa.
Prediction of compressive strength and elastic modulus for ultra-high-performance concrete
Kim, Jong-Chan (author) / Lim, Woo-Young (author)
2022-11-22
Article (Journal)
Electronic Resource
English
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