Results 71 to 80 of about 6,394 (206)

A predictive model for uniaxial compressive strength of carbonate rocks from Schmidt hardness [PDF]

, 2011
Uniaxial compressive strength (UCS) is considered to be one of the important parameters in rock engineering projects. In order to determine UCS, direct and indirect techniques are employed.
Akdas, Hurriyet, Ceylan, Halil, Ceylan, Halil, Yurdakul, Murat   +3 more
core   +2 more sources

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Mechanical properties of microcrystalline branching selenite gypsum samples and influence of constituting factors

Journal of Rock Mechanics and Geotechnical Engineering, 2019
The high sedimentological variability of gypsum rocks has the effect that a univocal characterization of this material is not easy to establish. This is particularly true from the geomechanical point of view: when the mechanical properties of gypsum ...
C. Caselle, S. Bonetto, C. Colombero, C. Comina   +3 more
doaj   +1 more source

A data mining approach for jet grouting uniaxial compressive strength prediction [PDF]

, 2009
Jet Grouting (JG) is a Geotechnical Engineering technique that is characterized by a great versatility, being the best solution for several soil treatment improvement problems. However, JG lacks design rules and quality control.
Correia, A. Gomes, Cortez, Paulo, Tinoco, Joaquim Agostinho Barbosa   +2 more
core   +1 more source

Comparative Evaluation of Chemical and Physical Expansive Agents in Cemented Paste Backfill: Expansion Behavior, Mechanical Response, and Microstructural Mechanisms

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo, Mengyuan Li, Xiaoming Wei, Andrew Pan, Xiaopeng Peng, Tingting Ren   +5 more
wiley   +1 more source

The Uniaxial Compressive Strength of Soft Rock

Civil Engineering Dimension, 2007
Soft rock is a term that usually refers to a rock material with a uniaxial compressive strength (UCS) less than 20 MPa. This low strength range might be influenced by physical characteristics, such as size, saturation, weathering and mineral content.
D. S. Agustawijaya
doaj  

An Experimental Evaluation of the Weathering Effects on Mine Shaft Lining Materials [PDF]

, 2017
Many shaft collapses are related to the deterioration and failure of the masonry shaft lining materials. In modern mine shaft, concrete is widely used to provide support.
Marshall, AM, Stace, LR, Wanatowski, D, Yang, W   +3 more
core   +2 more sources

Predicting grout’s uniaxial compressive strength (UCS) for fully grouted rock bolting system by applying ensemble machine learning techniques

Neural Computing and Applications
AbstractThis study proposes a novel system for accurately predicting grout’s uniaxial compressive strength (UCS) in fully grouted rock bolting systems. To achieve this, a database comprising 73 UCS values with varying water-to-grout (W/G) ratios ranging from 22 to 42%, curing times from 1 to 28 days, the admixture of fly ash contents ranging from 0 to ...
Shahab Hosseini, Shima Entezam, Behshad Jodeiri Shokri, Ali Mirzaghorbanali, Hadi Nourizadeh, Amin Motallebiyan, Alireza Entezam, Kevin McDougall, Warna Karunasena, Naj Aziz   +9 more
openaire   +2 more sources

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

Deep Underground Science and Engineering, Volume 5, Issue 1, Page 144-159, March 2026.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source

Impact of Sand Grain Size on the Mode I Fracture Toughness and Compressive and Tensile Strength of Artificial Sandstones

Advances in Civil Engineering
Texture and mineralogical composition of rocks have a significant impact on their mechanical properties. Grain size is a crucial textural property of sandstones, as it significantly influences their physical and mechanical characteristics.
Ali Lakirouhani, Fateme Gharedaghi, Sasan Ghasemlooytakantapeh   +2 more
doaj   +1 more source