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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mechanical characterisation of aggregates using concrete compressible packing model
The accuracy of existing theoretical models to predict the compressive strength of concrete relies mainly on the accuracy of the used properties of its constituents. However, these models could be used at first to backcalculate the properties of aggregates from a given rock formation. Then, the compressive strength of any type of concrete made using those aggregates could be accurately predicted, using the already established properties. In this research, the compressible packing model and its extension to include non-optimised mixes (containing more than 10% filler) was used to mechanically characterise aggregates. Two procedures are described to backcalculate the parent rock compressive strength from compressive and/or indirect tensile strengths of concrete mixtures. Five different rock formations were used (three limestone, one marly limestone, and one dolomitic limestone). The first procedure uses compressive strength data for a concrete mixture at two different ages, while the second procedure uses compressive and indirect tensile strengths data from two concrete mixtures. Results show that both procedures provide a good estimate of the parent rock compressive strength.
Mechanical characterisation of aggregates using concrete compressible packing model
The accuracy of existing theoretical models to predict the compressive strength of concrete relies mainly on the accuracy of the used properties of its constituents. However, these models could be used at first to backcalculate the properties of aggregates from a given rock formation. Then, the compressive strength of any type of concrete made using those aggregates could be accurately predicted, using the already established properties. In this research, the compressible packing model and its extension to include non-optimised mixes (containing more than 10% filler) was used to mechanically characterise aggregates. Two procedures are described to backcalculate the parent rock compressive strength from compressive and/or indirect tensile strengths of concrete mixtures. Five different rock formations were used (three limestone, one marly limestone, and one dolomitic limestone). The first procedure uses compressive strength data for a concrete mixture at two different ages, while the second procedure uses compressive and indirect tensile strengths data from two concrete mixtures. Results show that both procedures provide a good estimate of the parent rock compressive strength.
Mechanical characterisation of aggregates using concrete compressible packing model
Achour, Taoufik (Autor:in) / Loulizi, Amara (Autor:in) / Achour, Rim (Autor:in)
European Journal of Environmental and Civil Engineering ; 23 ; 945-956
03.08.2019
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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