Experimental study and failure criterion analysis on combined compression-shear performance of rubber concrete (RC) with different rubber replacement ratio

Yu, Zhenkun; Tang, Rui; Li, Furong; Hu, Yanli; Liu, Guoqing; Qin, Yue; Huang, Qiao

doi:10.1016/j.conbuildmat.2021.123105

Cited by 22 publications

(25 citation statements)

References 36 publications

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“…Second, the RA contain more initial defects than natural aggregate crushed stone. Yu et al, Wang et al, and Liu et al [ 14 , 16 , 18 ] studied the compression–shear multiaxial mechanical properties of ordinary concrete, recycled concrete, and coral concrete. According to their results, the developing trend of the shear interface failure modes with the growth of axial compression ratio were consistent with the conclusions in this paper.…”

Section: Analysis Of Test Resultsmentioning

confidence: 99%

“…Moreover, with the increase of the RA replacement rate, the shear stress showed a gradually-decreasing trend, while the plastic deformability was gradually strengthened. Yu et al and Liu et al [ 14 , 18 ] carried out experimental research on the compression–shear multiaxial mechanical properties of ordinary concrete and coral concrete, and obtained shear stress–strain curves under different axial compression ratios. For all kinds of concrete, the influencing pattern of axial compression ratio on the developing trend of stress–strain curve was basically consistent with the conclusions in this paper.…”

Section: Analysis Of Test Resultsmentioning

confidence: 99%

“…Correspondingly, the increase in plastic deformability was reduced, eventually leading to the phenomenon whereby the increase in shear strain of the recycled concrete under the influence of axial compression ratio was gradually reduced with the increase of the RA replacement rate. Yu et al and Liu et al [ 14 , 18 ] investigated the compression–shear multiaxial mechanical properties of ordinary concrete and coral concrete. The results showed that the shear stress was gradually increased with the growth of axial compression ratio, and the action of the axial compression ratio could effectively improve the plastic deformability of the concrete.…”

Section: Analysis Of Test Resultsmentioning

confidence: 99%

“…Figure 10 shows the compression–shear multiaxial stress mechanism model of recycled concrete. It can be observed that the shearing action is mainly formed by the van der Waals force, the chemical adhesive force, the mechanical bite force, and the friction force [ 14 ]. Since the RA are attached with a certain amount of old cement mortar, the bonding performance between the RA and the mortar is relatively weak.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…On such a basis, a corresponding failure criterion and constitutive model were proposed. Yu, Z. et al [ 14 ] conducted experimental research on the compression–shear multiaxial mechanical properties of ordinary concrete, and proposed a model to describe the relationship between the axial compression ratio and shear stress. Furthermore, a corresponding failure criterion was established based on the biaxial strength theory.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study and Theoretical Analysis on the Compression–Shear Multiaxial Mechanical Properties of Recycled Concrete

Zhang

Peng

et al. 2022

Materials

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Recycled concrete, which is formed by replacing coarse aggregates in ordinary concrete with recycled aggregates (RA), is of great significance for the secondary utilization of waste building resources. In civil engineering, concrete structures are sometimes subjected to a compression–shear multiaxial stress state. Therefore, research on the compression–shear multiaxial mechanical properties of recycled concrete plays an important role in engineering practice. To explore the effect of RA replacement rate on the compression–shear properties of recycled concrete, an experimental study was carried out using a compression–shear testing machine and considering five RA replacement rates and five axial compression ratios. Consequently, the failure modes and mechanical property parameters under different working conditions were obtained and were used to analyze the effects of RA replacement rate and axial compression ratio on the shear stress of recycled concrete. Eventually, the following conclusions were reached: With the growth of axial compression ratio, the shear cracks exhibit a developing trend along the oblique direction, and the friction traces on the shear surface are gradually deepened. As the replacement rate increases, the number of shear cracks is gradually increased, accompanied by increasing broken fragments falling off from the shear interface. Since the action of the axial compression ratio can effectively improve the mechanical bite force and friction on the shear interface of recycled concrete, as the axial compression ratio increases, the shear stress is gradually increased. On the other hand, due to the initial damage of RA and its weak adhesion with cement mortar, the shear stress is gradually reduced with the increase of RA replacement rate. Meanwhile, the increase in shear stress shows a gradually decreasing trend with the growth of axial compression ratio. Specifically, for the RA replacement rates of 0% and 100%, the shear stress increased by 4.06 times and 3.21 times, respectively, under the influence of the axial compression ratio. Under different axial compression ratios, the shear stress was reduced by 43~46%, due to the increase of RA replacement rate. In addition, based on the octahedral stress space and the principal stress space, a compression–shear multiaxial failure criterion and shear stress calculation model for recycled concrete were proposed, by considering the effect of the RA replacement rate. The outcomes of this research are of great significance for engineering applications and the development of recycled concrete.

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Section: Analysis Of Test Resultsmentioning

confidence: 99%

Section: Analysis Of Test Resultsmentioning

confidence: 99%

Section: Analysis Of Test Resultsmentioning

confidence: 99%

Section: Theoretical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Study and Theoretical Analysis on the Compression–Shear Multiaxial Mechanical Properties of Recycled Concrete

Zhang

Peng

et al. 2022

Materials

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Experimental study and mechanism analysis on basic mechanical properties of basalt fiber reinforced concrete

Wei

Sun

et al. 2022

Structural Concrete

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In order to comprehensively examine the influence of basalt fiber on the basic mechanical properties of concrete, the axial compression, axial tension and direct shear tests were carried out on basalt fiber reinforced concrete (BFRC) with different fiber contents and fiber lengths. The failure modes and stress–strain curves under different loading modes were obtained from the test data, and the basic mechanical parameters of BFRC were extracted from the curves. Based on the results, the following conclusions were drawn. With the increase of fiber content, both the compressive strength and tensile strength showed an upward trend first followed by a downward trend. In general, the shear strength of BFRC was lower than that of ordinary reinforced concrete with no fiber (RC). All BFRC specimens had an increased peak strain and significantly improved deformability compared to RC. Based on a comprehensive analysis, the specimen with a fiber content of 0.2% and a fiber length of 6 mm (BFRC‐0.2%‐6) exhibited the best mechanical properties. In addition, mathematical regression analysis was performed on the normalized stress–strain curves of BFRC, and the influencing parameters model of basalt fiber was proposed based on the fiber content and fiber length. Moreover, scanning electron microscopy (SEM) and computed tomography were utilized to analyze the influencing mechanism of basalt fiber content and fiber length on the mechanical properties of concrete from the microcosmic and mesoscopic perspectives.

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Research progress on rubber concrete properties: a review

Zhu

Liu

et al. 2022

J Rubber Res

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Experimental study and failure criterion analysis on combined compression-shear performance of rubber concrete (RC) with different rubber replacement ratio

Cited by 22 publications

References 36 publications

Experimental Study and Theoretical Analysis on the Compression–Shear Multiaxial Mechanical Properties of Recycled Concrete

Experimental Study and Theoretical Analysis on the Compression–Shear Multiaxial Mechanical Properties of Recycled Concrete

Experimental study and mechanism analysis on basic mechanical properties of basalt fiber reinforced concrete

Research progress on rubber concrete properties: a review

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