Mechanical behavior of reinforced concrete subjected to impact loading

Abstract Understanding the behavior of concrete and reinforced concrete at high strain rates is of critical importance in a range of application. The behavior of concrete and reinforced concrete at strain rates of the order of 10 4 /s and pressure up to 1.5 GPa are studied experimentally. The concrete analyzed has the same composition and processing conditions as the matrix phase in the reinforced concrete. The dynamic compression experiments of reinforced concrete are carried out by one-stage light gas gun apparatus which subjects the reinforced concrete to deformation at strain rates of the order of 10 4 /s with confining pressures of 1–1.5 GPa. The voltage–time signals are recorded by the manganin pressure gauges embedded in the target. The stress–strain curves of reinforced concrete with different impact velocities are obtained using Lagrangian analysis, from which the distribution regulations of other mechanical parameters such as specific internal energy and specific volume in the flow field are acquired. Experimental results indicate that the load-carrying capacities of concrete and reinforced concrete increase significantly with strain rate. The concrete and reinforced concrete are non-linear, rate-sensitive and pressure-dependent.

[1]  Joseph W. Tedesco,et al.  Moisture and Strain Rate Effects on Concrete Strength , 1996 .

[2]  Michael D. Kotsovos,et al.  Effect of testing techniques on the post-ultimate behaviour of concrete in compression , 1983 .

[3]  Z. Mroz,et al.  A viscoplastic model combines smedamage and smeared crack for softening of concrete , 1994 .

[4]  A. J. Watson,et al.  Compressive strength and ultimate strain of concrete under impact loading , 1978 .

[5]  L. E. Malvern,et al.  Dynamic Compressive Testing of Concrete and Mortar , 1984 .

[6]  S. H. Perry,et al.  Compressive behaviour of concrete at high strain rates , 1991 .

[7]  D. Watstein.  Effect of Straining Rate on the Compressive Strength and Elastic Properties of Concrete , 1953 .

[8]  Richard Fowles,et al.  Plane Stress Wave Propagation in Solids , 1970 .

[9]  EXPERIMENTAL STUDY OF DYNAMIC MECHANICAL BEHAVIOR OF CONCRETE , 2004 .

[10]  Danian Chen,et al.  Modeling shock loading behavior of concrete , 2001 .

[11]  Fabrice Gatuingt,et al.  Inelastic behavior modelling of concrete in low and high strain rate dynamics , 2003 .

[12]  Laurent Daudeville,et al.  Compaction and tensile damage in concrete: constitutive modelling and application to dynamics , 2000 .

[13]  Pei Chi Chou,et al.  Dynamic Response of Materials to Intense Impulsive Loading , 1972 .

[14]  F. Toutlemonde.  RESISTANCE AU CHOC DES STRUCTURES EN BETON : DU COMPORTEMENT DU MATERIAU AU CALCUL DES OUVRAGES , 1994 .

[15]  R. F. Williams,et al.  Determination of Constitutive Relationships with Multiple Gauges in Nondivergent Waves , 1971 .

[16]  S H Perry,et al.  Impact Behavior of Plain Concrete Loaded in Uniaxial Compression , 1995 .

[17]  J. W. Tedesco,et al.  Effects of Strain Rate on Concrete Strength , 1995 .

[18]  P. Rossi,et al.  Strain rate effects in concrete structures: The LCPC experience , 1997 .

[19]  D. E. Grady,et al.  Experimental analysis of spherical wave propagation , 1973 .

[20]  Joseph W. Tedesco,et al.  Split-Hopkinson Pressure-Bar tests on Concrete and Mortar in Tension and Compression , 1989 .

[21]  Shangshun Lin.  DYNAMIC CONSTITUTIVE RELATIONSHIP OF CONCRETE SUBJECTED TO SHOCK LOADING , 2005 .