Experimental and three-dimensional mesoscopic investigation of coral aggregate concrete under dynamic splitting-tensile loading

Ma, Hongfang; Wu, Zhenyang; Yu, Hongfa; Zhang, Jinhua; Yue, Chengjun

doi:10.1617/s11527-020-1447-5

Cited by 51 publications

(11 citation statements)

References 41 publications

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“…For the spalling test, the dynamic tensile strength can be evaluated from the free surface velocity [17]. Some concrete compression [14,16,[18][19][20][21][22][23][24] and tension [10][11][25][26][27][28][29][30][31][32][33][34]…”

Section: Shpb Testmentioning

confidence: 99%

“…They then proposed a revised quasi-static strain rate 0 of 1110 −6 s −1 , and a revised turning point of the DIF-curve to 1 s -1 , along with a modified DIF-relationship that achieves a better agreement with the test data. A collection of available SHPB tension tests data [10][11][25][26][27][28][29][30][31][32][33][34] is plotted in Fig. 5.…”

Section: The Tension Dif-curvementioning

confidence: 99%

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Dynamic increase factor (DIF) for concrete in compression and tension in FE modelling with a local concrete model

Chen

et al. 2022

International Journal of Impact Engineering

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Section: Shpb Testmentioning

confidence: 99%

Section: The Tension Dif-curvementioning

confidence: 99%

Dynamic increase factor (DIF) for concrete in compression and tension in FE modelling with a local concrete model

Chen

et al. 2022

International Journal of Impact Engineering

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“…The calculation of the number of coarse aggregates followed the classical grading curve of Fuller (Fuller and Thompson, 1907) with the given volume fraction. Then these coarse aggregates were randomly dispersed into the specimen domain with the extensively used “take and place” method (Ma et al., 2020) based on the Monte Carlo framework, which was conducted by a self-designed procedure FORTRAN. In actual concrete, a thin layer of ITZ with a non-uniform thickness of about 10∼50 µm wrapped the coarse aggregate (Grondin and Matallah, 2014; Thilakarathna et al., 2020).…”

Section: Meso-scale Modellingmentioning

confidence: 99%

Experiment and meso-scale modelling on combined effects of strain rate and specimen size on uniaxial-compressive failures of concrete

Jin

Miao

2023

International Journal of Damage Mechanics

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This paper presents experimental and meso-scale modelling studies on the combined effects of strain-rate and specimen size on uniaxial compressive failure behaviour of concrete. A series of uniaxial compressive tests and meso-scale simulations were conducted on concrete with various specimen sizes under different strain-rates covering the strain-rate range of seismic load, with special focus on the quantitative contribution of end-friction to compressive strength and its corresponding strain-rate effect as well as size effect. Results indicate that the uniaxial compressive failure with end-friction follows an hourglass failure pattern while that without end-friction exhibits a columnar failure pattern. The end-friction effect can form different confined zone distributions for various sized specimens, which can cause the contribution of end-friction to compressive strength is size dependent as well as enhance the influence of specimen size on static and dynamic strength. The contribution proportion of end-friction to compressive strength is around 20∼25%. Moreover, larger-sized specimen performs a stronger strain-rate effect and the increasing strain-rate can weaken the influence of specimen size on the real compressive strength. The proposed real DIF empirical formula considering the size-dependency (covering the low strain-rate range) can well estimate the strain-rate effect for concrete with different sizes, which can provide a valuable reference for the numerical calculation of dynamic mechanical response and the safety design of concrete structures.

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“…Ma et al [30] conducted dynamic impact loading tests using a split Hopkinson pressure bar (SHPB) system with a diameter of 100 mm, and the effects of strain rate on the uniaxial compressive strength, energy dissipation, fractal dimension, and failure morphology of SCAC were studied. Ma et al [20,31] proposed sisal-fiber-reinforced CASC (SFCASC) with a compressive strength of 77.3 MPa. Dynamic mechanical experiments were performed on the SFCASC by SHPB, and the SFCASC was found to exhibit an obvious strain rate effect.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Limestone Powder Content on the Dynamic and Static Mechanical Properties of Seawater Coral Aggregate Concrete (SCAC)

Jiang

Zhu

et al. 2023

Materials

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The development of island construction concrete can serve as a basis for the development and utilization of island resources. Complying with the principle of using local materials to configure seawater coral aggregate concrete (SCAC) that is able to meet the requirements of island and reef engineering construction could effectively shorten the construction period and cost of island and reef engineering construction. In this paper, quasi-static mechanical experiments and dynamic mechanical experiments were carried out on SCAC with different limestone powder contents. High-speed photography technology and Digital Image Correlation (DIC) were used to monitor the dynamic failure process and strain field of SCAC, and the influence of limestone powder content on the dynamic and static mechanical properties of SCAC was investigated. The results showed that, when the limestone powder content was 20% and 16%, the quasi-static compressive strength and quasi-static tensile strength exhibited the best improvement. Additionally, with increasing limestone powder content, the dynamic tensile strength of SCAC first showed and increasing trend and then a decreasing trend, reaching its maximum value when the limestone powder content was 16%. Moreover, the maximum strain value of SCAC with the same limestone powder content increased with increasing strain rate grade, showing an obvious effect on strain rate.

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Experimental and three-dimensional mesoscopic investigation of coral aggregate concrete under dynamic splitting-tensile loading

Cited by 51 publications

References 41 publications

Dynamic increase factor (DIF) for concrete in compression and tension in FE modelling with a local concrete model

Dynamic increase factor (DIF) for concrete in compression and tension in FE modelling with a local concrete model

Experiment and meso-scale modelling on combined effects of strain rate and specimen size on uniaxial-compressive failures of concrete

Experimental Study on the Effect of Limestone Powder Content on the Dynamic and Static Mechanical Properties of Seawater Coral Aggregate Concrete (SCAC)

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