Experimental study on dynamic mechanical properties and constitutive model of basalt fiber reinforced concrete

Zhang, Huang; Wang, Bin; Xie, Aoyu; Qi, Yazhen

doi:10.1016/j.conbuildmat.2017.06.177

Cited by 128 publications

(42 citation statements)

References 10 publications

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“…There have been many studies on the static and dynamic properties of BFRC. These studies are mainly focused on mechanical properties, constitutive models, microscopic composition and other aspects [4][5][6][7][8][9][10][11][12][13], but there are few studies on energy analysis. However, the failure process of concrete is actually an irreversible energy consumption process of energy exchange with the outside, so research on failure behavior of concrete through energy analysis is necessary.…”

Section: Introductionmentioning

confidence: 99%

Research on the Fractal Characteristics and Energy Dissipation of Basalt Fiber Reinforced Concrete after Exposure to Elevated Temperatures under Impact Loading

Liang

Jun-hai

et al. 2020

Materials

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The fractal characteristics and energy dissipation of basalt fiber reinforced concrete (BFRC) with five kinds of fiber volume contents (0.0%, 0.1%, 0.2%, 0.3%, 0.4%) after exposure to different temperatures (20 °C, 200 °C, 400 °C, 600 °C, 800 °C) under impact loading were investigated by using a 50 mm diameter split Hopkinson pressure bar (SHPB) apparatus. Scale-mass distribution rules and fractal dimension characteristics of fragments were studied based on the screening statistical method and the fractal theory. Furthermore, the relationship between the energy consumption density and the fractal dimension of fragments was established, and the effects of fiber content, temperature and impact velocity on fractal dimension and absorption energy were analyzed. The results show that the crushing severity of fragments and fractal dimension increase with the impact velocity under the same fiber content. The energy consumption density increases first and then decreases with increasing fiber content, and also decreases with increasing temperature. When the temperature and fiber content remain unchanged, the energy consumption density increases linearly with the increasing fractal dimension, and under the same impact velocity and temperature, there is no obvious linear relationship between energy consumption density and fractal dimension.

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Section: Introductionmentioning

confidence: 99%

Research on the Fractal Characteristics and Energy Dissipation of Basalt Fiber Reinforced Concrete after Exposure to Elevated Temperatures under Impact Loading

Liang

Jun-hai

et al. 2020

Materials

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Section: Dynamic Compressive Strength and Dynamic Increase Factor (Dimentioning

confidence: 99%

“…The compressive process spent an extremely short time at a high strain rate, but the compressive process with a short time could not accumulate enough energy to generate a great number of cracks. The only way to provide enough energy for arriving damage of specimen , is through improving the dynamic compressive strength of the concrete specimen [18,42,43]. For the sake of showing the effect degree of strain rate on the compressive strength of DSC at room temperature directly, dynamic increase factor (DIF) was defined as the ratio of dynamic compressive strength in different strain rates to the quasi-static compressive strength, which was widely used in dynamic analysis of concrete [18,25,42,44].…”

Section: Dynamic Compressive Strength and Dynamic Increase Factor (Dimentioning

confidence: 99%

“…After the dynamic compressive test, the typical failure features of DSC M1 andM6 at different strain rates are shown in Figure 5. As displayed in Figure 5, DSC specimens created a failure shape For the sake of showing the effect degree of strain rate on the compressive strength of DSC at room temperature directly, dynamic increase factor (DIF) was defined as the ratio of dynamic compressive strength in different strain rates to the quasi-static compressive strength, which was widely used in dynamic analysis of concrete [18,25,42,44]. The DIF of DSC at room temperature with different DSRR is presented in Table 6 and described in Figure 4.…”

Section: Dynamic Compressive Strength and Dynamic Increase Factor (Dimentioning

confidence: 99%

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Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures

et al. 2019

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In the building domain, the non-renewable resource of sand is widely used to produce concrete and mortar. The sand production has been estimated to be more than 10 billion tons with a total of 1.2 billion tons used in concrete in the last decade, which causes the gradual reduction of available building materials and impacts the environment. Since there are abundant desert sand resources in northwestern China, it would be viable to utilize desert sand as an alternative material for concrete production. In this study, an investigation of dynamic mechanical behaviors of desert sand concrete (DSC) was conducted. Various desert sand replacement ratios (0–100%) were used to replace the equivalent hill sand as fine aggregate. Experimental results showed that strain rate had a strong effect on the dynamic mechanical behaviors of DSC. The compressive strength (at room temperature) and flexural strength (after elevated temperature) increased with desert sand replacement ratio (DSRR) with the optimum replacement ratio of 40%, which was because the increase of DSRR improved the compaction of DSC. However, the effect of the low strength of desert sand was higher than that of the compaction when the DSSR exceeded 40%, so both strength values generally decreased with the increase of DSRR. Moreover, the dynamic constitutive model of DSC at room temperature was established on the basis of a nonlinear visco–elastic constitutive model (ZWT model), which can predict the stress–strain curves of DSC.

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“…Katkhuda et al [4] suggested that the compressive strength of concrete may minimally increase as the BF content increases until it reaches 1%, but the flexural and splitting tensile strength of concrete showed a significant improvement. Zhang et al [5] investigated the properties of BFRC at different fiber contents and observed a significantly improved 2 of 12 dynamic compressive strength of concrete with the addition of a reasonable basalt fiber content under different loading rates.…”

Section: Introductionmentioning

confidence: 99%

Sustainability of Reinforced Concrete Beams with/without BF Influenced by Cracking Capacity and Chloride Diffusion

et al. 2020

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Concrete’s production causes pronounced environmental impacts. It is confirmed that adding basalt fiber (BF) into concrete can improve the mechanical properties and reduce the chloride diffusion coefficient of concrete. Moreover, research on the environmental impact of BF and its application in concrete has gradually emerged in recent years. However, there is little research on the chloride diffusivity of concrete structures with BF under the coupling interaction of external loads and chloride action. Therefore, at first, six beams were cast to obtain the depth-dependent chloride diffusivity of concrete under the coupling interaction of chloride penetration and 50% and 80% of the cracking capacity. Then, a functional unit (FU) combining durability, cracking capacity and volume was proposed to evaluate the sustainability of the concrete structure. In addition, three extra FUs (volume, considering volume and cracking capacity simultaneously and considering volume, cracking capacity and durability simultaneously) were also proposed and compared with the first FU. Results indicate that, regardless of the applied load level, the average chloride diffusion coefficient of a reinforced concrete (RC) beam with BF is larger than that of an ordinary RC beam. Moreover, the sorting of life cycle assessment (LCA) results will vary significantly with the different preset functional units. When taking the cracking capacity into consideration, adding BF into concrete is a suitable solution to improve the sustainability of RC beams.

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Experimental study on dynamic mechanical properties and constitutive model of basalt fiber reinforced concrete

Cited by 128 publications

References 10 publications

Research on the Fractal Characteristics and Energy Dissipation of Basalt Fiber Reinforced Concrete after Exposure to Elevated Temperatures under Impact Loading

Research on the Fractal Characteristics and Energy Dissipation of Basalt Fiber Reinforced Concrete after Exposure to Elevated Temperatures under Impact Loading

Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures

Sustainability of Reinforced Concrete Beams with/without BF Influenced by Cracking Capacity and Chloride Diffusion

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