4.7 Article

Influence of High-Temperature Treatment on Strength and Failure Behaviors of a Quartz-Rich Sandstone under True Triaxial Condition

Related references

Note: Only part of the references are listed.
Article Engineering, Geological

Experimental study on the failure process of sandstone subjected to cyclic loading and unloading after high temperature treatment

Weijing Xiao et al.

Summary: The experimental results show that the stress-strain curve, Young's modulus, and crack volume strain of sandstone samples exhibit unique characteristics during cyclic loading and unloading after high-temperature treatment. The dissipation energy of sandstone samples increases significantly after high-temperature treatment compared to samples treated at lower temperatures.

ENGINEERING GEOLOGY (2021)

Article Engineering, Geological

Effect of Grain Size on the Mechanical Behaviour of Granite Under High Temperature and Triaxial Stresses

Weitao Yin et al.

Summary: The study shows that under high-temperature and high-pressure conditions, coarse-grained granite has a higher thermal expansion coefficient and elastic modulus compared to fine-grained granite, leading to different failure characteristics and mechanical properties, resulting in a higher permeability for coarse-grained granite in HDR geothermal development.

ROCK MECHANICS AND ROCK ENGINEERING (2021)

Article Engineering, Environmental

Effects of high temperature on the mechanical behaviors of sandstone under true-triaxial unloading conditions

Fan Xiao et al.

Summary: The study found that high-temperature treatment weakens the density and P-wave velocity of sandstone specimens, leading to an increase in microcracks. As the temperature increases, the peak strength initially increases and then dramatically decreases, while the peak strain continues to increase. The changes in stress and strain at the unloading stage are negatively correlated with temperature.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2021)

Article Construction & Building Technology

Similar Physical Modeling of Roof Stress and Subsidence in Room and Pillar Mining of a Gently Inclined Medium-Thick Phosphate Rock

Xiaoshuang Li et al.

Summary: This study used a physical model to investigate roof stress and subsidence during mining in the Jinning Phosphate Mine in Yunnan, China. Three different stoping structures were considered, showing pressure relief areas above the stopes and pressure-bearing areas at the front of the roof. As mining extended, stress relief boundaries increased and the roof subsided with a maximum of -14.58 mm, -4.67 mm, and -3.48 mm, creating bending subsidence, fracture, and caving zones in the overlying strata.

ADVANCES IN CIVIL ENGINEERING (2021)

Article Engineering, Environmental

Experimental investigation of triaxial compression and permeability of gritstone in geothermal environment

Yu Zhao et al.

Summary: This study experimentally investigated the microscopic failure characteristics and macroscopic mechanics of gritstone under geothermal conditions through hydrothermal and cooling treatments. The results showed that the pre-treating pressure influenced the triaxial compressive strength of gritstone, and high-pressure water treatment significantly affected the permeability of the specimens. The analysis revealed that temperature and pressure in the geothermal environment affected cracking and dissolution in gritstone, affecting crack initiation and propagation.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2021)

Article Construction & Building Technology

Experimental investigation of triaxial strength of ultra-high performance concrete after exposure to elevated temperature

Zhenhuan Xu et al.

Summary: This study investigates the effect of elevated temperatures on hybrid steel and polypropylene fibre reinforced ultra-high performance concrete (UHPC) under uniaxial and triaxial compression states. Through material and structural tests, the high temperature impact on UHPC's strength is discussed and an empirical model for reproducing the triaxial compression stress-strain curves of UHPC after elevated temperature is proposed.

CONSTRUCTION AND BUILDING MATERIALS (2021)

Article Geosciences, Multidisciplinary

Analysis of triaxial compression deformation and strength characteristics of limestone after high temperature

Qing-bin Meng et al.

ARABIAN JOURNAL OF GEOSCIENCES (2020)

Article Engineering, Geological

Mechanical properties of granite under real-time high temperature and three-dimensional stress

Xiao Ma et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2020)

Article Engineering, Geological

Deformation Damage and Energy Evolution Characteristics of Coal at Different Depths

Zhaopeng Zhang et al.

ROCK MECHANICS AND ROCK ENGINEERING (2019)

Article Geosciences, Multidisciplinary

Variation of mechanical properties of granite after high-temperature treatment

Jianjun Hu et al.

ARABIAN JOURNAL OF GEOSCIENCES (2018)

Article Engineering, Geological

A coupled thermo-mechanical damage model for granite

X. L. Xu et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2018)

Article Geosciences, Multidisciplinary

Effect of high temperature on physical and mechanical properties of Jalore granite

P. K. Gautam et al.

JOURNAL OF APPLIED GEOPHYSICS (2018)

Article Engineering, Environmental

Experimental study of the influence of water and temperature on the mechanical behavior of mudstone and sandstone

Yinlong Lu et al.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2017)

Article Energy & Fuels

Investigation of the temperature effect on rock permeability sensitivity

Xiao Guo et al.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2017)

Article Construction & Building Technology

Groundbreaking theoretical and technical conceptualization of fluidized mining of deep underground solid mineral resources

Heping Xie et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2017)

Review Engineering, Multidisciplinary

Opportunities and Challenges in Deep Mining: A Brief Review

Pathegama G. Ranjith et al.

ENGINEERING (2017)

Article Engineering, Geological

An experimental study on the physico-mechanical properties of two post-high-temperature rocks

Shi Liu et al.

ENGINEERING GEOLOGY (2015)

Article Engineering, Geological

Laboratory Investigation of the Effects of Temperature on the Mechanical Properties of Sandstone

G. Wu et al.

GEOTECHNICAL AND GEOLOGICAL ENGINEERING (2013)