The Mechanical Mechanism Analysis for Mortar Arch Framework Slope Protection Structure

Yang, Xu; Li, Ding Ling; Li, Peng; Xiao, Yingyuan; Nie, Yi Hua

doi:10.4028/www.scientific.net/amr.859.143

Cited by 2 publications

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“…Current research on this kind of slope protection mostly considers the overall analysis of the mechanical properties or the advantages of the durability of these structures. Some scholars have used numerical simulation software to establish slope models and analysed their mechanical properties [2][3][4]. Duan et al [5] believe this kind of slope protection easily undergoes damage at the dry joint when it is under stress.…”

Section: Introductionmentioning

confidence: 99%

Study of the Failure Mechanism of Mortar Rubble Using Digital Image Correlation, Acoustic Emission and Scanning Electron Microscopy

Chen

Dong

et al. 2022

Buildings

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This paper describes an extensive experimental study of the compressive failure of different types of aggregates and the influence of aggregate type on the interfacial properties of mortars. Interfacial debonding was the main failure mode of mortar rubbles. The interlocking strength of aggregate and mortar strongly affected the compressive strength of materials. When basalt was used as the aggregate, I-II composite failure of the deflection crack occurred as well as interfacial debonding. The highest instantaneous AE energy of the granite mortar rubble was 1349 mV·ms, which was 4.1 times greater than that of the basalt mortar rubble (326 mV·ms). Acoustic emissions of mortar rubble were strongest in the 150–220 kHz range and gave an early warning of the damage load at high frequencies (160–320 kHz). The C-S-H gel formed by the hydration reaction adhered to the aggregate pores and exhibited a “root pile” effect that improved the bonding performance of the interfacial zone. The interfacial porosity of the basalt, granite and limestone mortar rubble was 21.29%, 18.70% and 30.0%, respectively. The limestone interface has a large porosity, the fractal cones was small (1.19), and there was an obvious sidewall effect, but the interfacial strength was weak. The pore structure had a significant effect on the interfacial bond strength. This multi-faceted analysis truly reflected the state and evolution of the damage of mortar rubbles, and the results were very effective for determining the mechanical mode of damage of mortar rubbles.

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Section: Introductionmentioning

confidence: 99%

Study of the Failure Mechanism of Mortar Rubble Using Digital Image Correlation, Acoustic Emission and Scanning Electron Microscopy

Chen

Dong

et al. 2022

Buildings

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Numerical Analysis for Selection of New Arch Framework Structures Made of Precast Block Materials for Highway Slope Protection

Tang¹,

Nie²,

Yang³

2017

dtmse

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Arch framework structure is one of the common forms of highway slope protection in actual projects, and the rapid development and wide application of new type arch framework structures made of precast block material are for their convenient construction and environmental protection. The article selects two typical arch shaped framework structures made of traditional mortar rubble, and precast block material over mortar foundation respectively. According to actual structure sizes, finite element analysis models were built to calculate and analyze the displacement and stress of two structures under same vertical loading pressure. The results of the numerical analysis and laboratory test results show that, the difference of the displacement between the two structures is small, and the displacement of new structure is a little bigger. The stress of new structure is significantly less than traditional structure. The new type structure of precast block material over mortar foundation possesses better over-all performances among the chosen two structures and can be used widely.

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The Mechanical Mechanism Analysis for Mortar Arch Framework Slope Protection Structure

Cited by 2 publications

References 0 publications

Study of the Failure Mechanism of Mortar Rubble Using Digital Image Correlation, Acoustic Emission and Scanning Electron Microscopy

Study of the Failure Mechanism of Mortar Rubble Using Digital Image Correlation, Acoustic Emission and Scanning Electron Microscopy

Numerical Analysis for Selection of New Arch Framework Structures Made of Precast Block Materials for Highway Slope Protection

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