Study on the dynamic fracture properties and size effect of concrete based on DIC technology

Article Mechanics

Specimen and aggregate size effect on the dynamic fracture parameters of concrete under high loading rates

Masoud Rezaei et al.

Summary: This paper presents a comprehensive experimental investigation of the dynamic size effect and fracture characteristics of concrete, exploring the effect of structural size and aggregate size on the dynamic strength of concrete.

ENGINEERING FRACTURE MECHANICS (2022)

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Article Construction & Building Technology

Experimental Study on the Influence of Size Effects on Compressive Dynamic Behavior of Lightweight Concrete

Zhenpeng Yu et al.

Summary: This study investigates the compressive dynamic behavior of lightweight concrete (LC) under different strain rates and sizes. It is found that both the strain rate effect and size effect have an impact on the failure modes and compressive strength of LC. The failure modes change from vertical cracks to oblique cracks as the strain rate increases, and the compressive strength gradually increases with the rise of strain rate, but the rate of increase decreases with the rise of cube sizes. The compressive strength of LC decreases as the cube size increases, and the decrease is greater at higher strain rates. The influence of strain rate and size on the compressive strength is more significant in LC compared to normal-weight concrete.

JOURNAL OF MATERIALS IN CIVIL ENGINEERING (2022)

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Article Construction & Building Technology

Research on the fracture mechanical performance of basalt fiber nano-CaCO3 concrete based on DIC technology

Huiheng Lian et al.

Summary: The research demonstrates that adding an appropriate amount of basalt fiber can enhance the basic mechanical properties and fracture performance of nano-CaCO3 concrete, with the best effect achieved at the BFNCC-0.2% condition. Moreover, the bridging effect of basalt fibers is mainly observed before reaching 90% of the peak load, and the inhibiting effect on crack propagation begins to increase at 70% of the peak load and gradually decreases at 90% of the peak load. Additionally, by utilizing SEM technology and DIC technology, the study revealed the fracture mechanical properties and stress mechanism of BFNCC, offering insights for its application and development in hydraulic construction.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Construction & Building Technology

Coupling influence of low strain rate and structural size on splitting-failure of concrete: Tests and Mechanism analysis

Wenxuan Yu et al.

Summary: The study demonstrates that the Static and Dynamic unified Size Effect Law accurately describes the variation of nominal strength of concrete under different sizes and strain-rates. As the strain-rate increases, the failure strength of concrete also increases, with a more significant effect seen in larger structural sizes. The size effect on splitting-tensile strength of concrete decreases as the strain-rate increases, attributed to the combined effects of multiple cracking, viscosity, and inertia mechanisms.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Geosciences, Multidisciplinary

Nonlinear Characteristics of Granite After High-Temperature Treatment Captured by Digital Image Correlation and Acoustic Emission Technology

Jian Li et al.

Summary: This study investigates the nonlinear characteristics of granite after exposure to high temperatures. The results show that high-temperature treatment significantly changes the fracture characteristics of granite from brittle to ductile. Additionally, a linear correlation between work of cohesion and cumulative acoustic emission counts is observed.

NATURAL RESOURCES RESEARCH (2022)

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Article Mechanics

Fracture behavior of flax fibers reinforced earth concrete

Nathalie Kouta et al.

Summary: This paper studied the effect of flax fibers on the fracture behavior of earth concrete, finding that adding flax fibers can enhance the ductility and crack resistance of earth concrete. The acoustic emission activity and fracture energy increased with the percentage and length of fibers, while the AE signal parameters varied with loading rate.

ENGINEERING FRACTURE MECHANICS (2021)

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Article Construction & Building Technology

Acoustic emission characteristics and crack resistance of basalt fiber reinforced concrete under tensile load

Liyun Yang et al.

Summary: The study found that an appropriate amount of basalt fiber can increase the tensile strength of concrete, reduce the strength of acoustic emission parameters and cumulative events, and improve crack patterns. Additionally, the suitable amount of basalt fiber can also decrease horizontal strain and its standard deviation, further enhancing the crack resistance of concrete.

CONSTRUCTION AND BUILDING MATERIALS (2021)

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Article Construction & Building Technology

The theoretical basis of testing methods to determine double-K criterion for crack propagation in concrete: technical report of the RILEM TC265-TDK

Shilang Xu et al.

Summary: The double-K criterion consists of two fracture parameters, initial cracking toughness and unstable fracture toughness, which are derived from linear-elastic fracture mechanics principles and can be obtained through laboratory experiments. A proposal for standard testing methods for determining the double-K criterion for crack propagation in concrete has been made, and the significance and applicability of the double-K criterion for predicting crack initiation, structure failure, and crack stability in concrete structures have been introduced. Two testing methods, wedge-splitting test and three-point bending beam test, are recommended for determining the double-K fracture parameters, along with the calculation methods and theoretical basis for these parameters.

MATERIALS AND STRUCTURES (2021)

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Article Construction & Building Technology

RILEM Standard: testing methods for determination of the double-K criterion for crack propagation in concrete using wedge-splitting tests and three-point bending beam tests, recommendation of RILEM TC265-TDK

Shilang Xu et al.

Summary: This recommendation specifies standard testing methods for determining the double-K criterion for Mode I crack propagation in concrete, including geometry for specimens, fabrication of specimens, testing machine, load transmission system, and supports, measuring instruments, determination of initial cracking load P-ini, determination of measured maximum load P-max and initial compliance c(i), calculation methods for wedge-splitting test and three-point bending beam test, as well as the testing results and testing report forms. By using these methods, the measured fracture parameters of double-K criterion can describe the onset of cracking, unstable cracking, and failure in concrete structures.

MATERIALS AND STRUCTURES (2021)

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Article Construction & Building Technology

Results of round-robin testing for determining the double-K fracture parameters for crack propagation in concrete: technical report of the RILEM TC265-TDK

Shilang Xu et al.

Summary: The Double-K fracture criterion is based on two fracture parameters derived from linear-elastic fracture mechanics principles. A recommendation from RILEM suggests standardizing the testing method, with a round-robin testing campaign proposed to validate the proposed standard. The results of round-robin testing for determining the double-K criterion for crack propagation in concrete are presented and discussed in the paper.

MATERIALS AND STRUCTURES (2021)

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Article Mechanics

Determination of concrete strength and toughness from notched 3 PB specimens of same depth but various span-depth ratios

Xiangyu Han et al.

Summary: This study provides a simple closed-form solution for determining the depth and span independent tensile strength and fracture toughness of small concrete samples with various span-depth ratios. It is suggested to consider specimen weight when the span-depth ratio is greater than 4.0 in 3 PB tests. The inclusion of fracture statistics analysis in the study adds reliability to the mean f(t) and K-IC values.

ENGINEERING FRACTURE MECHANICS (2021)

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Article Construction & Building Technology

Characterization of fracture process in polyolefin fibre-reinforced concrete using ultrasonic waves and digital image correlation

Magdalena Rucka et al.

Summary: This study investigates the monitoring of fracture process in concrete beams using digital image correlation and ultrasonic testing, characterizing the evolution of damage in polyolefin fibre-reinforced concrete beams. The study developed an efficient procedure for determining strain field and identifying crack height, interpreting wave time histories data through calculation of magnitude-phase-composite metrics. Results show that energy and phase shifts of ultrasonic waves can serve as autonomous damage indicators in a real-time fracture monitoring system.

CONSTRUCTION AND BUILDING MATERIALS (2021)

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Article Engineering, Mechanical

Mechanical and fracture properties of geopolymer concrete with basalt fiber using digital image correlation

Yamin Wang et al.

Summary: This study investigated the mechanical and fracture properties of basalt fiber reinforced fly ash geopolymer concrete with different fiber lengths, and found that the 6 mm fiber reinforced concrete exhibited the best performance. Before reaching the 80% peak load level, a decrease in crack length and an improvement in relative COD increment were observed in the basalt fiber reinforced concrete.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2021)

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Article Construction & Building Technology

Experimental investigation of concrete fracture behavior with different loading rates based on acoustic emission

Chen Chen et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

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Article Construction & Building Technology

Mechanical properties and damping capacity of polypropylene fiber reinforced concrete modified by rubber powder

Jinxu Mo et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

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Article Engineering, Mechanical

Fracture behaviour analysis of the full-graded concrete based on digital image correlation and acoustic emission technique

Xiangqian Fan et al.

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2020)

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Article Construction & Building Technology

Mechanical and radiation shielding properties of concrete reinforced with boron-basalt fibers using Digital Image Correlation and X-ray micro-computed tomography

Lukasz Skarzynski

CONSTRUCTION AND BUILDING MATERIALS (2020)

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Article Engineering, Mechanical

Determination of intergranular and transgranular failure of mesoscale model concrete under mode-I fracture

Dong Li et al.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2020)

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Article Engineering, Mechanical

Determining concrete fracture parameters using three-point bending beams with various specimen spans

Yangyang Yin et al.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2020)

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Article Engineering, Mechanical

An experimental investigation on FPZ evolution of concrete at different low temperatures by means of 3D-DIC

Bing Fan et al.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2020)

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Article Construction & Building Technology

Loading rate effect on crack velocity in ultra-high-performance fiber-reinforced concrete

Tri Thuong Ngo et al.

CONSTRUCTION AND BUILDING MATERIALS (2019)

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Article Mechanics

On the fracture parameters of heavy-weight magnetite concrete with different water-cement ratios through three methods

Ali Sadrmomtazi et al.

ENGINEERING FRACTURE MECHANICS (2019)

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Article Construction & Building Technology

Strain rate-dependent shear failure surfaces of ultra-high-performance fiber-reinforced concretes

Tri Thuong Ngo et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

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Article Construction & Building Technology

Behavior of of hybrid-synthetic fiber reinforced cellular lightweight concrete under uniaxial tension - Experimental and analytical studies

Mohammad Abdur Rasheed et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

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Article Construction & Building Technology

Experimental investigation of the size effect of layered roller compacted concrete (RCC) under high-strain-rate loading

Xiao-hua Wang et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

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Article Construction & Building Technology

Study on bending damage and failure of basalt fiber reinforced concrete under freeze-thaw cycles

Yan-Ru Zhao et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

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Article Construction & Building Technology

Improvements in fracture behavior and shear capacity of fiber reinforced normal and self consolidating concrete: A comparative study

Sahith Gali et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

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Article Construction & Building Technology

An experimental investigation of pre-loading effects on the dynamic behaviour of concrete

Dongming Yan et al.

MAGAZINE OF CONCRETE RESEARCH (2017)

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Article Construction & Building Technology

Influence of free water on dynamic behavior of dam concrete under biaxial compression

Hao Wang et al.

CONSTRUCTION AND BUILDING MATERIALS (2016)

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Article Construction & Building Technology

Flexural cracking behavior of normal strength, high strength and high strength fiber concrete beams, using Digital Image Correlation technique

M. Hamrat et al.

CONSTRUCTION AND BUILDING MATERIALS (2016)

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Article Construction & Building Technology

Effects of strain rate on mechanical behavior of modeled recycled aggregate concrete under uniaxial compression

Jianzhuang Xiao et al.

CONSTRUCTION AND BUILDING MATERIALS (2015)

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Article Mechanics

Effects of loading rates on concrete double-K fracture parameters

Shaowei Hu et al.

ENGINEERING FRACTURE MECHANICS (2015)

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Article Construction & Building Technology

Dynamic biaxial tensile-compressive strength and failure criterion of plain concrete

Shang Shiming et al.

CONSTRUCTION AND BUILDING MATERIALS (2013)

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Article Mechanics

An experimental investigation on the FPZ properties in concrete using digital image correlation technique

ZhiMin Wu et al.

ENGINEERING FRACTURE MECHANICS (2011)

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Article Engineering, Mechanical

Dynamic failure of structures due to the great Hanshin-Awaji earthquake

S Tanimura et al.

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING (2000)

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Article Mechanics

Size effect

ZP Bazant

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES (2000)

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Study on the dynamic fracture properties and size effect of concrete based on DIC technology

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