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A platform for research: civil engineering, architecture and urbanism
Determination of packing profiles for the verification of the compressible packing model in case of UHPC pastes
Abstract Due to the high amount of powders, the low water/cement ratio and the optimal packing density, ultra-high performance concrete (UHPC) is a very viscous material. In order to predict material properties and reduce ‘trial and error’ methods, the compressible packing model (CPM) with a compaction factor equal to 9 is first validated for a combination of rounded and crushed aggregates. The results indicate the ability of the CPM to predict the optimal combination of aggregate fractions in these binary mixtures. Further, an extension towards the powders is made. Due to the fact that in this case, the compaction factor is not known yet, different values are taken into account. With a compaction index equal to 7, also the optimal combination of the powders can be predicted when the exact particle size distribution is taken into account. Based on these results, it becomes possible to extend the CPM and predict the packing density of a complete UHPC-mixture.
Determination of packing profiles for the verification of the compressible packing model in case of UHPC pastes
Abstract Due to the high amount of powders, the low water/cement ratio and the optimal packing density, ultra-high performance concrete (UHPC) is a very viscous material. In order to predict material properties and reduce ‘trial and error’ methods, the compressible packing model (CPM) with a compaction factor equal to 9 is first validated for a combination of rounded and crushed aggregates. The results indicate the ability of the CPM to predict the optimal combination of aggregate fractions in these binary mixtures. Further, an extension towards the powders is made. Due to the fact that in this case, the compaction factor is not known yet, different values are taken into account. With a compaction index equal to 7, also the optimal combination of the powders can be predicted when the exact particle size distribution is taken into account. Based on these results, it becomes possible to extend the CPM and predict the packing density of a complete UHPC-mixture.
Determination of packing profiles for the verification of the compressible packing model in case of UHPC pastes
Putten, J. (author) / Dils, J. (author) / Minne, P. (author) / Boel, V. (author) / Schutter, G. (author)
Materials and Structures ; 50 ; 1-14
2016-12-22
14 pages
Article (Journal)
Electronic Resource
English
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