Title
Investigating porous concrete with improved strength: Testing at different scales
Author
Agar-Ozbek, A.S.
Weerheijm, J.
Schlangen, E.
van Breugel, K.
Publication year
2013
Abstract
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.
Subject
Mechatronics, Mechanics & Materials
EBP - Explosions, Ballistics & Protection
TS - Technical Sciences
Defence Research
Architecture
Defence, Safety and Security
Porous concrete
Macro-scale testing
Meso-scale testing
Interfacial transition zone
Compaction
Aggregate properties
Computed tomography
Aggregate properties
Compaction
Computed tomography
Interfacial transition zone
Macro-scale testing
Meso-scale testing
Porous concrete
Aggregate properties
Computed Tomography
Interfacial transition zone
Macro scale
Mesoscale
Porous concretes
Compaction
Computerized tomography
Design
Mechanical testing
X ray diffraction analysis
Concrete mixtures
To reference this document use:
http://resolver.tudelft.nl/uuid:91d3afd7-9ed1-4734-9389-0285ffc16a84
DOI
https://doi.org/10.1016/j.conbuildmat.2012.12.040
TNO identifier
470987
ISSN
0950-0618
Source
Construction and Building Materials, 41, 480-490
Document type
article