EXPERIMENTAL STUDY OF THE COMPRESSIVE STRENGTH OF MORTAR USING SHPB

【Author】

M.Zhang~*,State Key Lab.of Explosion Sc.& Technology,Beijing Institute of Technology,China H.J.Wu~*,State Key Lab.of Explosion Sc.& Technology,Beijing Institute of Technology,China Q.M.Li,State Key Lab.of Explosion Sc.and Technology,Beijing Institute of Technology,China & The University of Manchester,United Kingdom F.L.Huang,State Key Lab.of Explosion Sc.& Technology,Beijing Institute of Technology,China

【Abstract】

<正>Dynamic compressive strength of mortar specimen is studied in a series of SHPB tests in order to examine the effect of lateral confinement on the Dynamic Increasing Factor(DIF) of concrete-like materials.Solid and tubular specimens with different inner and outer diameters are used in SHPB tests.The relationship between DIF and strain rate for a range of specimen geometries is presented based on experimental results.It has been shown that the strain acceleration increases with the increase of the average strain rate in a SHPB test.When strain rate is beyond a critical value,the accelerated axial compression leads to significant radial inertia effect,which may be mistakenly interpreted as strain rate effect on the DIF of concrete-like materials.

【Keywords】

SHPB test;;mortar;;radial effect

References

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Total: 18 articles

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