Effect of compounding conductive materials on the mechanical properties of concrete and the microscopic mechanism

Li, Jiuyang; Chen, Li; Wang, Xiaoyu; Hu, Guangchao; Wang, Zhenwei; Guo, Jinpeng; Zhu, Yuepeng; Fan, Xinmei; Luo, Jingwei

doi:10.1016/j.conbuildmat.2023.131000

Cited by 9 publications

(2 citation statements)

References 14 publications

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“…The calculation amount is small, but the error cannot be estimated. The method introduced in reference (Li et al, 2023b) was used to analyze the experimental results. For range analysis, the greater the R, the greater the influence of the factor on the test results.…”

Section: Range Analysis and Variance Analysismentioning

confidence: 99%

Study on mechanical properties and microstructure of steel-polypropylene fiber coal gangue concrete

Li,

Chen,

Luo

et al. 2023

Front. Mater.

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Incorporating coal gangue into the concrete matrix can realize the utilization of solid waste and reduce the use of natural aggregate. To improve the mechanical properties of coal gangue concrete, this paper designs four-level and four-factor orthogonal tests with coal gangue ceramide substitution rate, coal gangue ceramide sand substitution rate, steel fiber content, and polypropylene fiber content as independent variables. Through multidimensional data analysis of the test results, The main and secondary factors of compressive strength of hybrid fiber coal gangue concrete from strong to weak are the replacement rate of coal gangue ceramic sand, the replacement rate of coal gangue ceramic grain, the content of steel fiber and the content of polypropylene fiber. The optimal content is 30% coal gangue ceramic particle, 25∼30% coal gangue ceramic sand, 0.75∼1% steel fiber, and 0.2% polypropylene fiber. The grey prediction model GM (1, 5) is obtained, which can predict the concrete strength well within the range selected in this paper. The influence of fiber and coal gangue on the microstructure was studied by scanning electron microscopy, and the influence law of interfacial transition zone on the strength of concrete was explored, which provided a theoretical basis for the study of solid waste utilization of coal gangue.

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Section: Range Analysis and Variance Analysismentioning

confidence: 99%

Study on mechanical properties and microstructure of steel-polypropylene fiber coal gangue concrete

Li,

Chen,

Luo

et al. 2023

Front. Mater.

Self Cite

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show abstract

“…The damage mechanism of coal gangue concrete and plain concrete was comparatively analyzed by Benpei Chen (Chen, 1994) and Bing Yan (Yan, 2017), et al It was found that for ordinary concrete damage occurred with cracks along the coarse aggregate edge/interface extending into mortar, while for coal gangue concrete, failure occurred with cracks directly penetrating through the coal gangue. In an attempt to improve mechanical properties of coal gangue concrete, Li J (Li et al, 2023) used different types of steel fibers in coal gangue concrete and studied their influence on mechanical properties of such concrete. It was concluded that shear steel fibers had the best improvement effect on concrete.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete

Chen

Luo

et al. 2023

Front. Mater.

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Incorporation of coal gangue in the concrete mixes can realize utilization of the solid waste and reduce extraction/use of natural aggregates. To improve the mechanical properties of coal gangue concrete, this paper studies use of steel fibre together with coal gangue coarse aggregate, coal gangue fine aggregate/sand in various concrete mixes. The effect of volume dosages of steel fibre and different levels of replacing nature coarse aggregate and river sand with coal gangue aggregates on concrete compressive strength was first investigated. Then, a design of experiment using orthogonal test was adopted to study concrete mixes with 3 factors, namely, coal gangue coarse aggregate, coal gangue sand and steel fibre, and each at 3 levels. Through multidimensional statistical data analysis of the test results, the primary and secondary factors and the optimal composition of the steel fibre reinforced coal gangue concrete were identified, and a grey prediction model for compressive strength of the concrete mixes established. The microstructural characteristics and failure mechanism of steel fiber reinforced coal gangue concrete was also studied and discussed.

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Development of nanodiamond nanobifiller-derived polymeric nanocomposites

Kausar

2024

Polymer/Nanodiamond Nanocomposites

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Effect of compounding conductive materials on the mechanical properties of concrete and the microscopic mechanism

Cited by 9 publications

References 14 publications

Study on mechanical properties and microstructure of steel-polypropylene fiber coal gangue concrete

Study on mechanical properties and microstructure of steel-polypropylene fiber coal gangue concrete

Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete

Development of nanodiamond nanobifiller-derived polymeric nanocomposites

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