Review of Effects of Loading Rate on Concrete in Compression

Fu, Houli; Erki, M. A.; Seçkin, Mine

doi:10.1061/(asce)0733-9445(1991)117:12(3645)

Cited by 96 publications

(31 citation statements)

References 12 publications

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“…Additional experimental work has been undertaken considering only monotonic loading of reinforced concrete, and a substantial number of test programs have investigated the effect of strain rate at the material level. Several studies have attempted to comprehensively summarize the state of knowledge on these topics . Findings include increased strengths due to dynamic loading, but little consensus regarding its effects on ultimate strain or deformation capacities.…”

Section: Previous Researchmentioning

confidence: 99%

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Marder

Motter

Elwood

et al. 2018

Earthq Engng Struct Dyn

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Summary Understanding the impact of prior earthquake damage on residual capacity is important for postearthquake damage assessment of buildings; however, interpretation of such impact is challenging when based on tests using traditional reversed‐cyclic loading protocols. A new loading protocol, consisting of a dynamic earthquake displacement history followed by quasi‐static reversed‐cyclic loading to failure, is presented as an alternative to traditional simulated seismic loading protocols. Data are analyzed from a set of 12 nominally identical ductile reinforced concrete beams that were tested by using variations of this protocol and traditional reversed‐cyclic and monotonic protocols. Differences in the cycle content of the earthquake displacement histories applied to the test specimens allowed for the effects of load history variation below 2.2% drift to be isolated. It is found that such variation had no effect on the beam deformation capacities. The effects of dynamic loading rates are also analyzed and compared against control quasi‐static specimens. Relative strength increases due to dynamic loading are found to be more significant at yield than at ultimate. Dynamic loading rates led to modest reductions in the beam deformation capacities, but the presence of causality between these variables remains uncertain.

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Section: Previous Researchmentioning

confidence: 99%

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Marder

Motter

Elwood

et al. 2018

Earthq Engng Struct Dyn

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show abstract

“…The conclusions drawn from their investigations are that, for steel, the yield strength and ultimate strength enhance as the strain rate increases, the elastic modulus is not influenced by the strain rate variations, and the strain-rate effects are inversely proportional to the strength of steel. Properties of concrete under dynamic loading were studied by Bischoff and Perry (1991), Malvar and Ross (1998), Fu et al (1991), Yan and Lin (2006). It can be ascertained from their studies that, for concrete, the strain-rate effects are inversely proportional to the strength of concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on dynamic properties of RC beam

Li¹,

Li²

2013

Magazine of Concrete Research

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The effects of loading rate on the reinforced concrete (RC) beam are experimentally and numerically studied in this paper. First, the effects of strain rate on the reinforcing steel and concrete with different grades are investigated in tests at the strain rates (10 25 /s,0 . 1/s) that might be experienced during earthquakes. Then, the dynamic characteristics of RC beams are given through experiments, and the influences of loading rate on the bearing capacity, ductility, stiffness, failure mode and energy absorbing of beams are analysed. Finally, based on the Timoshenko beam theory and fibre model approach, an improved beam element model of RC member is presented, which, including the shear deformation and strain rate effect of concrete and steel, is added into the FEAPpv program. Numerical analyses are carried out with comparisons of experimental data, and it is shown that the simulation results agree well with the tested ones.

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“…It has been validated that both the compressive and tensile strength of the concrete material are closely related to the strain rate. At high strain rate, the strength of concrete material improves significantly, but the effect of strain rate for tensile and compressive strength is also different [26][27][28][29][30]. Compressive strength can be increased by 100 %, tensile strength even increased to 600 % [26,28].…”

Section: Concretementioning

confidence: 99%

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

Yang¹,

Wang²,

Lu³

et al. 2018

J. vibroeng.

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Abstract. With the development of the precision guidance technology, the earth-penetrating weapon (EPW) is a huge threat to infrastructures. The objective of this research is to investigate the damage characteristics of mass concrete targets under the combined action of penetration and explosion. The validity of the penetration model is discussed by reproducing a previous experimental test reported in the literature. Meanwhile, a field test about the internal explosion in a concrete cube is conducted to verify the validity of the internal explosion model. Subsequently, damage characteristics of a mass concrete target from the upper part of a concrete gravity dam are discussed when subjected to the combined action of the penetration and explosion. In order to improve the structural performance of the mass concrete target to penetration and explosion loadings, high strength concrete material is selected as a preventive measure. Penetration processes and damage patterns of the mass target with normal and high strength concrete material are compared. Then, three internal explosion models are presented to investigate the influence of the initial penetration damage on the failure characteristics of the mass concrete target. The results show that the resistance of the mass target to the combined action of the penetration and explosion can be enhanced significantly by using the high strength concrete material. The initial penetration damage has a significant influence on the damage processes of the mass concrete target subjected to internal blast loading.

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Review of Effects of Loading Rate on Concrete in Compression

Cited by 96 publications

References 12 publications

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Effects of variation in loading protocol on the strength and deformation capacity of ductile reinforced concrete beams

Experimental and numerical study on dynamic properties of RC beam

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

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