Reinforced high strength concrete beams subjected to air blast loading
2004 (English)In: STRUCTURES UNDER SHOCK AND IMPACT VIII, ASHURST, ENGLAND: WIT PRESS , 2004, 53-62 p.Conference paper (Refereed)
A total of 49 reinforced concrete beams of both high strength concrete (HSC) and, for reference, normal strength concrete (NSC) were tested. 38 beams were subjected to air blast loading in a shock tube and the remaining eleven beams were tested statically for reference. Concrete with nominal compressive cube strengths 40, 100, 140, 150 and 200 MPa were used and a few beams also contained steel fibres. Furthermore, beams with two concrete layers of different strength were tested. The purpose of this investigation was to study the structural behaviour of the concrete beams subjected to air blast loading.
All beams subjected to static loading failed in flexure. In the dynamic tests, beams without fibres and with high ratios of reinforcement exhibited shear failure. It was observed that the inclusion of steel fibres in the matrix increased the shear strength and the ductility of the beams. This investigation indicates that beams subjected to air blast loading obtained an increased load capacity when compared to the corresponding beams subjected to static loading.
Place, publisher, year, edition, pages
ASHURST, ENGLAND: WIT PRESS , 2004. 53-62 p.
, STRUCTURES AND MATERIALS, ISSN 1462-6055 ; 15
air blast loading, high strength concrete, steel fibres, reinforcement, failure modes
IdentifiersURN: urn:nbn:se:kth:diva-7336ISI: 000223144500006ISBN: 1-85312-706-XOAI: oai:DiVA.org:kth-7336DiVA: diva2:12320
8th International Conference on Structures Under Shock and Impact Iraklion, GREECE, MAR, 2004
QC 201011122007-06-182007-06-182012-02-13Bibliographically approved