A comparative study on dynamic mechanical performance of concrete and rock

Journal Title: Frattura ed Integrità Strutturale - Year 2015, Vol 9, Issue 34

Abstract

 Recently, engineering blasting is widely applied in projects such as rock mineral mining, construction of underground cavities and field-leveling excavation. Dynamic mechanical performance of rocks has been gradually attached importance both in China and abroad. Concrete and rock are two kinds of the most frequently used engineering materials and also frequently used as experimental objects currently. To compare dynamic mechanical performance of these two materials, this study performed dynamic compression test with five different strain rates on concrete and rock using Split Hopkinson Pressure Bar (SHPB) to obtain basic dynamic mechanical parameters of them and then summarized the relationship of dynamic compressive strength, peak strain and strain rate of two materials. Moreover, specific energy absorption is introduced to confirm dynamic damage mechanisms of concrete and rock materials. This work can not only help to improve working efficiency to the largest extent but also ensure the smooth development of engineering, providing rich theoretical guidance for development of related engineering in the future.

Authors and Affiliations

Xia Zhengbing, Zhang Kefeng, Deng Yanfeng, Ge Fuwen

Keywords

Related Articles

 Design optimization of cruciform specimens for biaxial fatigue loading

 In order to correctly assess the biaxial fatigue material properties one must experimentally test different load conditions and stress levels. With the rise of new in-plane biaxial fatigue testing machines, using...

 A mechanical model for FRP-strengthened beams in bending

 We analyse the problem of a simply supported beam, strengthened with a fibre-reinforced polymer (FRP) strip bonded to its intrados and subjected to bending couples applied to its end sections. A mechanical model is...

 Real-time non-contact ultrasonic detection of surface defects on objects moving at high speed

 The detection of surface defects during periodic inspection is important because, usually, the stresses are higher at the surface, thus affecting the growth of the discontinuity. Surface defects can be detected usi...

 Damage evolution in freeze cast metal/ceramic composites exhibiting lamellar microstructures

 The damage evolution in a single domain aluminium/alumina freeze-cast composite has been examined using 3D X-ray computed tomography (CT). A single domain was extracted and loaded incrementally at an orientation...

 Effect of fibre arrangement on the multiaxial fatigue of fibrous composites: a micromechanical computational model

 Structural components made of fibre-reinforced materials are frequently used in engineering applications. Fibre-reinforced composites are multiphase materials, and complex mechanical phenomena take place at l...

Download PDF file
  • EP ID EP143578
  • DOI 10.3221/IGF-ESIS.34.63
  • Views 45
  • Downloads 0

How To Cite

Xia Zhengbing, Zhang Kefeng, Deng Yanfeng, Ge Fuwen (2015).  A comparative study on dynamic mechanical performance of concrete and rock. Frattura ed Integrità Strutturale, 9(34), 574-579. https://europub.co.uk/articles/-A-143578