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Laboratory investigation on engineering mechanics properties of granite after various heating/cooling treatments

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Abstract

The purpose of this study is to investigate the engineering mechanical properties of granite after various heating/cooling treatments through laboratory investigation. Granite specimens were heated at different temperatures (25, 200, 400, 500, 600, and 800 °C) and cooled by two methods (natural cooling and water cooling) to investigate the change patterns of engineering mechanical properties of granite materials after heating/cooling treatments, including surface hardness, uniaxial compressive strength, modulus of elasticity, peak strain, and point load strength. The damage mechanisms of granite under different heating/cooling treatments were also revealed. Finally, the correlation between uniaxial compressive strength, point load strength, and surface hardness were analyzed by linear and nonlinear fitting methods. The results showed that the strength index of granite can be well evaluated by the hardness index, which has important engineering significance.

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Data availability

All data and materials used in the manuscript are available.

Materials availability

All data and materials used in the manuscript are available.

Abbreviations

HT:

Hardness test

UCT:

Uniaxial compression test

PLT:

Point load test

UTT:

Uniaxial tensile test

CSS:

Cube-shaped specimen

SCS:

Short-cylindrical specimen

LCS:

Long-cylindrical specimen

IRSS:

Irregular-shaped specimen

L :

Length of granite specimens (mm)

W :

Width of granite specimens (mm)

H :

Hight of granite specimens (mm)

R c :

Compressive strength (MPa)

P c :

Peak stress (kN)

A :

Bearing area (mm2)

E :

Elastic modulus (GPa)

ε p :

Peak strain (%)

V a :

Impact speed of ball head (m/s)

V b :

Rebound speed of ball head (m/s)

H L :

Leeb hardness

I s :

Point load intensity index (MN/m2)

P s :

Specimen load when destroyed under point load (kN)

D :

Distance between two loading cones applied to specimen (mm)

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Funding

This research was supported by the National Natural Science Foundation of China (grant no. 41672279).

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Authors and Affiliations

Authors

Contributions

Fei Zhao: complete the experiments of this study, process the experimental data, and write this paper. Qiang Sun: clarifying the research ideas, designing and guiding the experiment, and guiding the writing of the paper. Zhenlong Ge: completed the experiments for this study. Chen Dang: completed the experiments for this study.

Corresponding author

Correspondence to Qiang Sun.

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The authors declare no competing interests.

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Responsible Editor: Philippe Garrigues

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Zhao, F., Sun, Q., Ge, Z. et al. Laboratory investigation on engineering mechanics properties of granite after various heating/cooling treatments. Environ Sci Pollut Res 30, 12532–12544 (2023). https://doi.org/10.1007/s11356-022-23038-0

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  • DOI: https://doi.org/10.1007/s11356-022-23038-0

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