Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs

Jin, Xiaochao; Hou, Cheng; Lu, Chunsheng; Yang, Huawei; Shu, Xuefeng; Wang, Zhi Hua

doi:10.1038/s41598-017-15700-2

Cited by 26 publications

(42 citation statements)

References 32 publications

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“…e edges of the arcs also present a relative concentration of equivalent stress with magnitudes approximately equal to 60% and 50% of the value in the centre for angles of 20°and 30°, respectively. It can then be expected that the crack will begin in the centre and probably propagate towards the edges of the loading arc, as was observed from previous research studies [11,12,38].…”

Section: New Analytical Expression For the Brazilian Test With Loadinmentioning

confidence: 54%

A Novel Analytical Solution for the Brazilian Test with Loading Arcs

Gutiérrez-Moizant

Ramírez-Berasategui

Santos-Cuadros

et al. 2020

Mathematical Problems in Engineering

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This research study presents a new theoretical model to calculate the indirect tensile strength for the Brazilian disk with loading arcs, based on numerical simulations, two-dimensional elasticity theory, and Griffith failure criterion. The new expression incorporates a no uniform contact pressure distribution determined by the results of the simulations with the finite element method. A computational experiment design has been developed to test the accuracy of the predictions made with the proposed model. This study demonstrates that the stresses predicted with the new model are closer to those determined by the finite element models than other theoretical solutions available in the literature. Additionally, a comparative analysis with experimental results obtained by other authors also indicates that the new model provides a more accurate magnitude of the indirect tensile strength.

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Section: New Analytical Expression For the Brazilian Test With Loadinmentioning

confidence: 54%

A Novel Analytical Solution for the Brazilian Test with Loading Arcs

Gutiérrez-Moizant

Ramírez-Berasategui

Santos-Cuadros

et al. 2020

Mathematical Problems in Engineering

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“…Для новых материалов, созданных в лабораториях, потенциальное ухудшение их качества является существенным препятствием к принятию решения по их производству. Имеется широкий спектр исследований с использованием современного высокотехнологичного оборудования, касающихся деградации материалов, цель которых заключается в глубоком изучении для того, чтобы понять, как обнаружить дефекты, управлять рисками деградации матери-алов и повысить долговечность [9][10][11][12]. Для более эффективной оценки прогнозирования разрушения сложных гетерогенных материалов и формирования сопротивления материала к разрушению используют подходы фотоники [13].…”

Section: многокомпонентные материалыunclassified

The new paradigm of designing construction composites to protect the human environment

Lesovik

Фомина

2019

Vestnik MGSU

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Introduction. The negative effects of the environment is increasingly reflected in the health of the human. With the development of nature-like technologies, the main task of scientists around the world is to create comfortable conditions for human existence on the Earth. This primarily relates to the construction industry, as materials for 80 to 90 % of his/her life surround the human. The purpose of the work is to develop the fundamental foundations for creating new generation composites to protect the human environment based on transdisciplinary approaches, including the theoretical principles of geonics (geomimetics). Materials and methods. The work was based on the study and analysis of published sources and personal experience. The new paradigm of science is based on transdisciplinary research with transferring cognitive patterns between disciplines. To test the results of theoretical studies, high-tech equipment and modern research methods, such as scanning and transmission electron microscopy, scanning and atomic force microscopy, IR spectral analysis, thermal analysis methods, etc. were used at the Shared-Use Center on the base of BSTU named after V.G. Shukhov, Moscow State University named after M.V. Lomonosov, RAS Institute of Radio Engineering and Electronics named after V.A. Kotelnikov and NIISF RAASN. Results. Generalized view of innovative practical and scientific activity allowed formulating the problems of innovative development of construction materials science, where the main constraint is the lack of use of available knowledge from various fields of science, such as physics, chemistry, crystal chemistry, mineralogy, etc. in terms of transdisciplinarity. The focus is on the multi-component materials, which are designed on the base of the synergism of different physical and chemical parameters. Conclusions. Transdisciplinary nature of new science-intensive research allows solving complex problems in the traditional, allied and new fields of science, more efficient using natural, energy and financial resources, as well as facilitates the development of new paradigms of engineering. Implementation of such approaches has already yielded to obtain a new generation of composites protecting people from the impact of aggressive environmental factors and will enable innovative breakthroughs in the future. Acknowledgements. The research was realized owing to the resources of the State Programme of the Russian Federation “Development of Sciences and Technologies” for the years 2013 to 2020, the Programme of fundamental scientific research of the State Academies of Sciences for the years 2013 to 2020, within the framework of the Plan of fundamental scientific research of the Ministry of Construction Industry, Housing and Utilities Sector of the Russian Federation and Russian Academy of Architecture and Construction Sciences, Topic 7.5.1.; a reference university development programme based on BSTU named after V.G. Shoukhov with use of equipment of the High Technology Center at BSTU named after V.G. Shoukhov.

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“…The results showed that the flexural tensile strength is higher than split tensile strength. It is believed that the static tensile strength of mortar is higher than that of concrete, which can be attributed to that the coarse aggregates weaken the interface bonding strength of the concrete . Based on the dynamic splitting experiments of concrete, a hydrostatic‐stress‐dependent macroscopic model was suggested to strengthen the acknowledgement of strain rate on dynamic tensile behaviours of the specimens as the average strain rates as high as 10 2 s −1 .…”

Section: Introductionmentioning

confidence: 99%

“…11 Various stress loading equipments and experimental measure methods are applied to investigate the dynamic tensile behaviours of concrete-like materials for many years. [12][13][14][15][16][17][18][19][20][21] The servo-hydraulic material testing system (MTS) is usually used at low strain rate state (<10 −1 s −1 ) and the split Hopkinson pressure bar (SHPB) system is often applied to specimen at medium strain rate (>10 1 s −1 ). 22 Experimental measure methods can be divided into two types, including direct and indirect tension testing.…”

Section: Introductionmentioning

confidence: 99%

“…It is believed that the static tensile strength of mortar is higher than that of concrete, which can be attributed to that the coarse aggregates weaken the interface bonding strength of the concrete. 12 Based on the dynamic splitting experiments of concrete, a hydrostaticstress-dependent macroscopic model was suggested to strengthen the acknowledgement of strain rate on dynamic tensile behaviours of the specimens as the average strain rates as high as 10 2 s −1 . 13 Chen et al 31 proposed a modified relation to evaluate the tensile strength of cement mortar based on the experimental results, which considered the strain rate and water cement ratio effects.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic splitting tensile properties of concrete and cement mortar

Liu

Zhou

et al. 2019

Fatigue Fract Eng Mat Struct

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To investigate the dynamic tensile behaviours of concrete and cement mortar, a 50‐mm split Hopkinson pressure bar was applied on Brazilian disc specimens for dynamic tensile experiments, in which strain rate varied from 10−5 to 20 s−1. The high‐speed camera testing technique was used to capture the dynamic fractured process of the specimens at relative high strain rate. The experimental results revealed that the dynamic tensile strength of concrete specimens has a stronger strain rate effect than that of cement mortar specimens. Then three typical failure patterns of the specimens were confirmed in dynamic experiments. In addition, one‐parameter semi‐empirical relation between dynamic tensile strength and strain rate was established. Finally, the limitation of dynamic splitting experiments on Brazilian disc specimens was discussed in detail at high strain rate, in which the crack initiates from the contact point between the incident bar and specimens rather than the centre of the specimens.

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Quasi-static and dynamic experimental studies on the tensile strength and failure pattern of concrete and mortar discs

Cited by 26 publications

References 32 publications

A Novel Analytical Solution for the Brazilian Test with Loading Arcs

A Novel Analytical Solution for the Brazilian Test with Loading Arcs

The new paradigm of designing construction composites to protect the human environment

Dynamic splitting tensile properties of concrete and cement mortar

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