Investigating porous concrete with improved strength: Testing at different scales
article
Porous concrete incorporates a high percentage of meso-size air voids that makes its mechanical characteristics remarkably different from normal concrete. A research project was undertaken to design a special type of porous concrete, that fractures into small fragments when exposed to impact loading while having sufficient static strength, to be used in protective structures such as safety walls or storages for explosives. In the concretes designed, while a sufficient static strength was required, high porosity was essential to facilitate the formation of multiple cracks and the subsequent fracturing. Production of porous concretes having improved static compressive strengths was accomplished by modifying the mixture
design and the compaction technique; while the design procedure was supported by macro and mesoscale mechanical testing, computed tomography, microscopy and X-ray diffraction analysis.
design and the compaction technique; while the design procedure was supported by macro and mesoscale mechanical testing, computed tomography, microscopy and X-ray diffraction analysis.
Topics
Porous concreteMacro-scale testingMeso-scale testingInterfacial transition zoneCompactionAggregate propertiesComputed tomographyAggregate propertiesCompactionComputed tomographyInterfacial transition zoneMacro-scale testingMeso-scale testingPorous concreteAggregate propertiesComputed TomographyInterfacial transition zoneMacro scaleMesoscalePorous concretesCompactionComputerized tomographyDesignMechanical testingX ray diffraction analysisConcrete mixtures
TNO Identifier
470987
ISSN
0950-0618
Source
Construction and Building Materials, 41, pp. 480-490.
Pages
480-490
Files
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