Performance of soft-hard-soft (SHS) cement based composite subjected to blast loading with consideration of interface properties
Wu, Jun & Liu, Xuemei (2015) Performance of soft-hard-soft (SHS) cement based composite subjected to blast loading with consideration of interface properties. Frontiers of Structural and Civil Engineering, 9(3), pp. 323-340.
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This paper presents a combined experimental and numerical study on the damage and performance of a soft-hard-soft (SHS) multi-layer cement based composite subjected to blast loading which can be used for protective structures and infrastructures to resist extreme loadings, and the composite consists of three layers of construction materials including asphalt concrete (AC) on the top, high strength concrete (HSC) in the middle, and engineered cementitious composites (ECC) at the bottom. To better characterize the material properties under dynamic loading, interface properties of the composite were investigated through direct shear test and also used to validate the interface model. Strain rate effects of the asphalt concrete were also studied and both compressive and tensile dynamic increase factor (DIF) curves were improved based on split Hopkinson pressure bar (SHPB) test. A full-scale field blast test investigated the blast behavior of the composite materials. The numerical model was established by taking into account the strain rate effect of all concrete materials. Furthermore, the interface properties were also considered into the model. The numerical simulation using nonlinear finite element software LS-DYNA agrees closely with the experimental data. Both the numerical and field blast test indicated that the SHS composite exhibited high resistance against blast loading.
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|Item Type:||Journal Article|
|Keywords:||High strength concrete, Engineered cementitious composite, Interface, Blast test, Strain rate effect|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2015 Higher Education Press and Springer-Verlag Berlin Heidelberg|
|Deposited On:||06 Oct 2015 22:59|
|Last Modified:||11 Oct 2015 05:12|
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