dynamic properties of concrete materials with high rates

Dynamic Properties Of Concrete Materials With High Rates ...

Author(s) K. Fujikake, K. Mori, K. Uebayashi, T. Ohno J. Mizuncr. Abstract. This study is to find the dynamic properties of concrete materials under both high strain- rates and triaxial stress states and to formulate the dynamic constitutive model of concrete.

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Dynamic properties of concrete materials with high rates ...

This study is to find the dynamic properties of concrete materials under both high strain-rates and biaxial stress states and to formulate the dynamic constitutive model of concrete. Thus, triaxial rapid compressive loading tests for concrete specimens were executed.

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Numerical study on dynamic properties of concrete

Zhou 2] makes a study on mesoscale modeling of concrete tensile failure mechanism at high strain rates. HAO[3] proposes numerical model to simulate concrete material properties at high strain rate under direct tension. Haußler-Combe[4]proposes a novel approach to model the influence of high strain rates on the behavior of concrete. It is based ...

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Dynamic behavior of concrete at high strain rates and ...

Oct 01, 2001  Understanding the behavior of concrete and mortar at very high strain rates is of critical importance in a range of applications. Under highly dynamic conditions, the strain-rate dependence of material response and high levels of hydrostatic pressure cause the material behavior to be significantly different from what is observed under quasistatic conditions.

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Dynamic Properties Of Concrete Materials With High Rates ...

Author(s) K. Fujikake, K. Mori, K. Uebayashi, T. Ohno J. Mizuncr. Abstract. This study is to find the dynamic properties of concrete materials under both high strain- rates and triaxial stress states and to formulate the dynamic constitutive model of concrete.

get price

Dynamic behavior of concrete at high strain rates and ...

Oct 01, 2001  Understanding the behavior of concrete and mortar at very high strain rates is of critical importance in a range of applications. Under highly dynamic conditions, the strain-rate dependence of material response and high levels of hydrostatic pressure cause the material behavior to be significantly different from what is observed under quasistatic conditions.

get price

Dynamic properties of concrete materials with high rates ...

N2 - This study is to find the dynamic properties of concrete materials under both high strain-rates and biaxial stress states and to formulate the dynamic constitutive model of concrete. Thus, triaxial rapid compressive loading tests for concrete specimens were executed.

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Numerical Analysis of Concrete Material Properties at High ...

Jan 01, 2011  Computers and Structures, 40(2), pp. 313-327. [10] Yan DM and Lin G (2006). Dynamic properties of concrete in dynamic tension. Cement and concrete research, 36(2006), pp. 1371-1378. [11] Zhou XQ and Hao H (2008). Modelling of compressive behaviour of concrete-like materials at high strain rate.

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Experimental Study of the Dynamic Mechanical Properties of ...

The dynamic mechanical properties of HPESA concrete materials were correlated with impact-loading strain rates. At different strain rates, three types of stress–strain curves were exhibited: single-peak, double-peak, and transition types. The sensitivity of materials to strain rates was positively correlated with aggregate sizes.

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Dynamic Properties of High Volume Fly Ash Nanosilica ...

Abstract. The study aims to determine the dynamic properties of high volume fly ash nanosilica (HVFANS) concrete exposed to strain rates between 30.12 to 101.42 s-1 and temperatures of 25, 400, and 700 o C by using split Hopkinson pressure bar (SHPB) machine. The static and dynamic compressive strengths of HVFANS concrete were slightly lower than plain concrete (PC) at room

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Compressive behaviour of concrete at high strain rates ...

Abrahamsson, E., ‘Influence of dynamic loads on mechanical properties of concrete’ (summary in English),Nordisk Betong 6(4) (1962) 337–346. Google Scholar 3. Mainstone, R. J., ‘Properties of materials at high rates of straining or loading’,Matér. Constr. 8(44) (1975) 102–116. Google Scholar 4.

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Experimental study on the dynamic compressive mechanical ...

Apr 01, 2014  Strain rate is an important parameter to describe the dynamic properties of concrete, which is determined by the loading rate and the viscoelasticity characteristics of material . Temperature changes the inner structure and the deformation property of concrete, thus influencing the strain rate at elevated temperature.

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Experimental Study on Dynamic Mechanical Properties of ...

In order to study the static and dynamic mechanical characteristics of the coal gangue concrete used in the mine support structure, the compressive strength test, the drop weight impact test, and the Split Hopkinson Pressure Bar (SHPB) test were conducted. The compressive strength, initial and final impacting energy, dynamic strength, and failure characteristic of concrete were obtained of the ...

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Dynamic Characterization of Orthogneiss Rock Subjected to ...

May 22, 2010  As well known, the Hopkinson bar technique is widely used to determine the mechanical properties of structural materials under high strain rates; however, while the standard Hopkinson bar (with a diameter in the range of 10–20 mm) is sufficient for dynamic testing of fine-grained materials (i.e. Carrara marble), larger bars are needed to load ...

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Evaluating the Dynamic Elastic Modulus of Concrete Using ...

The objectives of this study are to investigate the relationship between static and dynamic elastic moduli determined using shear-wave velocity measurements and to demonstrate the practical potential of the shear-wave velocity method for in situ dynamic modulus evaluation. Three hundred 150 by 300 mm concrete cylinders were prepared from three different mixtures with target compressive ...

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Review of Effects of Loading Rate on Concrete in ...

A survey of the behavior of concrete subjected to dynamic loading is presented. Since the mechanical properties of materials are functions of the rate of loading, they need to be determined with respect to straining rate in order to accurately predict the behavior of a reinforced concrete structure subjected to dynamic

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Rheology - The Concrete Portal

Fig 2 Concrete rheology and the effect of additives 10,3. Note: ‘Ref’ indicates reference concrete; the X-axis refers to plastic viscosity, and not to the shear strain rate as in Figure 1 . Fig 3 Ranges of rheological properties for normal concrete and SCC 10,3

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Numerical study of the influences of pressure confinement ...

May 20, 2018  Fib model code for concrete structures 2010 gives recommendations of concrete material DIF (Dynamic Increase Factor, defined as the ratio of dynamic-to-static strength) as a function of strain rate that can be used in the design and analysis. The behavior of concrete materials subjected to tri-axial static loadings have been studied by many ...

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Dynamic Properties of High Volume Fly Ash Nanosilica ...

Abstract. The study aims to determine the dynamic properties of high volume fly ash nanosilica (HVFANS) concrete exposed to strain rates between 30.12 to 101.42 s-1 and temperatures of 25, 400, and 700 o C by using split Hopkinson pressure bar (SHPB) machine. The static and dynamic compressive strengths of HVFANS concrete were slightly lower than plain concrete (PC) at room

get price

Review of Effects of Loading Rate on Concrete in ...

A survey of the behavior of concrete subjected to dynamic loading is presented. Since the mechanical properties of materials are functions of the rate of loading, they need to be determined with respect to straining rate in order to accurately predict the behavior of a reinforced concrete structure subjected to dynamic

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Numerical Investigation of the Dynamic Compressive ...

Jun 06, 2012  Hao Y, Hao H, Zhang XH (2012) Numerical analysis of concrete material properties at high strain rate under direct tension. Int J Impact Eng 39:51–62. Article Google Scholar Herrmann W (1969) Constitutive equation for the dynamic compaction of ductile porous materials. J

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INTEGRATED APPROACH TO DYNAMIC IMPACT LOADING

Nonlinear Material Properties • It is important to select nonlinear material properties carefully. • Include high strain rate effects • Typically, reduced ductility and increased strength/stiffness • Include triaxiality effects • Reduced ductility for steel; hydrostatic pressure “cap” for concrete • High

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10 Properties of Concrete and their Uses - The Constructor

Properties of concrete are influenced by many factors mainly due to mix proportion of cement, sand, aggregates and water. Ratio of these materials control the various concrete properties which are discussed below. Properties of Concrete Different properties of concrete: Grades ...

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Experimental Study on Dynamic Mechanical Properties of ...

In order to study the static and dynamic mechanical characteristics of the coal gangue concrete used in the mine support structure, the compressive strength test, the drop weight impact test, and the Split Hopkinson Pressure Bar (SHPB) test were conducted. The compressive strength, initial and final impacting energy, dynamic strength, and failure characteristic of concrete were obtained of the ...

get price

Dynamic Characterization of Orthogneiss Rock Subjected to ...

May 22, 2010  As well known, the Hopkinson bar technique is widely used to determine the mechanical properties of structural materials under high strain rates; however, while the standard Hopkinson bar (with a diameter in the range of 10–20 mm) is sufficient for dynamic testing of fine-grained materials (i.e. Carrara marble), larger bars are needed to load ...

get price

Parameters of Holmquist–Johnson–Cook model for high ...

Aug 02, 2017  Holmquist–Johnson–Cook constitutive model has been widely used in analyzing the dynamic responses of concrete-like materials under projectile impact and explosive loadings, the constitutive parameters of which were always referred from the original documents and only applied to the normal strength concrete with the compressive strength of 48 MPa.

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Evaluating the Dynamic Elastic Modulus of Concrete Using ...

The objectives of this study are to investigate the relationship between static and dynamic elastic moduli determined using shear-wave velocity measurements and to demonstrate the practical potential of the shear-wave velocity method for in situ dynamic modulus evaluation. Three hundred 150 by 300 mm concrete cylinders were prepared from three different mixtures with target compressive ...

get price

Rheology - The Concrete Portal

Fig 2 Concrete rheology and the effect of additives 10,3. Note: ‘Ref’ indicates reference concrete; the X-axis refers to plastic viscosity, and not to the shear strain rate as in Figure 1 . Fig 3 Ranges of rheological properties for normal concrete and SCC 10,3

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Research on Properties of High-Performance Cement Mortar ...

Cement mortar is one of the most important components of semiflexible pavement materials; however, the effects of cement mortar formulation on the performance and the grouting rate are rarely studied. Therefore, the optimum formulation of high-performance cement mortar (HPCM) for different types and contents was studied, and the grouting effect of the cement mortar was studied by rutting tests.

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Experimental Characterization of Masonry and Masonry ...

Nov 24, 2015  Current materials such as steel or concrete have been intensively investigated. However, similar studies on the dynamic properties of masonry or masonry components such as clay brick or mortar are scares. This paper intends to study the behavior of masonry and its usual components (clay brick and mortar) when subjected to high strain rates.

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Laboratory Test on Dynamic Material Properties of Annealed ...

Dec 01, 2012  Dynamic increment on glass compressive strength is found more significant than its tensile strength, a phenomenon different from other brittle materials such as concrete. The Young's modulus is found relatively insensitive to strain rate in the testing range, and is slightly larger in compressive tests than in tensile tests.

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Brittle materials at high-loading rates: an open area of ...

Jan 28, 2017  In most of these applications, the brittle materials (ceramic, concrete, rock, glass, etc.) are subjected to an intense loading characterized by high or very high strain rates leading to extreme damage modes such as dynamic fragmentation, fracturing, pore collapse, shear and/or plasticity mechanisms and so on.

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