Results 21 to 30 of about 6,394 (206)

Proposing Regression Models to Estimate Uniaxial Compressive Strength and Elastic Modulus of the Sandstones Based on Physical Properties and Compressional Wave Velocity [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2021
Many engineering structures have been built on the sandstones. The main purpose of this study is to estimate the uniaxial compressive strength (UCS) and modulus of elasticity (Es) of sandstones using regression models.
Amir Azadmehr   +2 more
doaj   +1 more source

Anisotropy of mechanical properties of greywacke [PDF]

open access: yes, 2019
The paper brings description of the mechanical properties of greywacke sampled in Kobeřice quarry (Lower Carboniferous Culm Basin, Drahany Uplands, Bohemian Massif).
Havlíčková, Dagmar   +2 more
core   +1 more source

Stress concentrations around voids in three dimensions : The roots of failure [PDF]

open access: yes, 2017
Funding This work forms part of a NERC New Investigator award for DH (NE/I001743/1), which is gratefully acknowledged. Acknowledgments The authors would like to acknowledge the reviewers, Elizabeth Ritz and Phillip Resor.
Bubeck, A.   +3 more
core   +1 more source

Mechanical properties of Michigan Basin's gypsum before and after saturation

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
The stability analysis of an abandoned underground gypsum mine requires the determination of the mine pillar's strength. This is especially important for flooded abandoned mines where the gypsum pillars become saturated and are subjected to dissolution ...
Mohammadhossein Sadeghiamirshahidi   +1 more
doaj   +1 more source

Strength and strain quantities under brittle compression process of hard rocks [PDF]

open access: yes, 2018
Purpose. To examine the relationships between strength properties and strain quantities associated with the brittle compression process of hard brittle rocks. Methods.
Adesida, P, Akinbinu, V, Oniyide, G
core   +1 more source

Triaxial compression testing of multicomponent geomaterials from quartz-poor (syenitic) systems [PDF]

open access: yes, 2017
This paper focuses on mafic microgranular enclaves enclosed in quartz-poor igneous rocks and their effect on strength properties of the rock massif. The study examines host rock–enclave multicomponent geomaterials from enclave-bearing syenitic rocks from
Krmíček, Lukáš, Závacký, Martin
core   +2 more sources

CORRELATIONS OF POINT LOAD INDEX AND PULSE VELOCITY WITH THE UNIAXIAL COMPRESSIVE STRENGTH FOR ROCKS

open access: yesJournal of Engineering, 2011
Rock engineers widely use the uniaxial compressive strength (UCS) of rocks in designing surface and underground structures. The procedure for measuring this rock strength has been standardized by both the International Society for Rock Mechanics (ISRM ...
Muhammad Abdul Jabbar
doaj   +1 more source

A determination method for the shear strength of soil-rock mixture considering the size effect and its application

open access: yesFrontiers in Materials, 2022
The shear strength of the soil-rock mixture (S-RM) is the primary mechanical factor influencing the stability of the deposit slope. The particle size range inside the test sample, however, is not the same as that of the S-RM in the deposit slope due to ...
Yingbo Zhou   +5 more
doaj   +1 more source

An adaptive neuro fuzzy inference system to model the uniaxial compressive strength of cemented hydraulic backfill [PDF]

open access: yes, 2018
Purpose. The purpose of this paper is to develop the models for predicting the uniaxial compressive strength (UCS) of cemented hydraulic backfill (CHB), a widely used technique for filling underground voids created by mining operations as it provides ...
Basarir, H   +4 more
core   +1 more source

Factorial Experiment Study on the Mechanical Properties of Sandstone–Concrete Specimens Under Different Freeze–Thaw Conditions

open access: yesFrontiers in Physics, 2020
The contact part between shaft wall and rock is affected by many factors, such as temperature and formation pressure, in the commonly used freezing method in coal mine development through quicksand and water-rich strata.
Tao Zhao   +4 more
doaj   +1 more source

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