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Raman Imaging of Cementitious Systems
The chemical composition and mineralogy of heterogeneous materials are key to understanding their behavior and performance. Specifically, for...
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Failure behaviors of granitic rocks induced by point/local loads under biaxial compression stress state
It is acknowledged that most surrounding rocks of underground engineering are subjected to biaxial static stresses and various dynamic fatigue loads....
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A statistical bonded particle model study on the effects of rock heterogeneity and cement strength on dynamic rock fracture
Numerical modelling and simulation can be used to gain insight about rock excavation processes such as rock drilling. Since rock materials are...
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Using Fractal Dimensions in Modeling Complex Systems in Engineering
The article is devoted to the development and implementation of elements of express methods for designing heterogeneous objects. The method “of...
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Experimental investigation of the strain rate effect on crack initiation and crack damage thresholds of hard rock under quasi-static compression
The crack closure stress σ cc , crack initiation stress σ ci and crack damage stress σ cd are important mechanical parameters to describe the brittle...
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Study of Additives Designed in 3D to Lighten Synthetic Marbles
The high global demand for ornamental stones in building construction is motivating the use of their waste, generated during manufacture, to produce...
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Seismic response of granites with different grain sizes after thermal treatment: an experimental study
Understanding the wave propagation behaviour in rock masses with different temperatures and geological conditions is of great significance for the...
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Rock joint filling breakage under three different instant loading conditions; physical test and PFC simulation
In this investigation, the influences of filling shapes on the failure mechanisms of rock masses under uniaxial compressive tests were analyzed using...
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Hard-rock tunnel lithology identification using multi-scale dilated convolutional attention network based on tunnel face images
For real-time classification of rock-masses in hard-rock tunnels, quick determination of the rock lithology on the tunnel face during construction is...
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Study on the Heterogeneity of Conglomerate Reservoirs and Its Characterization Methods
Conglomerate reservoirs are highly heterogeneous due to the influence of sedimentary process. To characterize and quantify heterogeneity, a study was...
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Investigation of Multiscale Failure Mechanism of Red Bed Soft Rock using Grain-Based Finite-Discrete Element Method Combined with X-Ray Micro-computerized Tomography
The mechanical properties and failure mechanisms of geomaterials are greatly affected by their heterogeneity. As a special complex rock medium, the...
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Laboratory investigations on activation characteristics of fracture induced by fluid injection and unloading of normal stress
The activation of fractures and faults associated with stress perturbations is frequently encountered in various engineering applications....
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Automatic Classification of Plutonic Rocks with Machine Learning Applied to Extracted Shades and Colors on iOS Devices
Light/dark shades and color are some properties used for the classification of plutonic rocks but are difficult to measure because they depend on the...
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Avalanches in concrete compression failure under sulfate attack
Concrete is a typical porous heterogeneous material. Avalanches during concrete failure release acoustic emission (AE) signals. The statistical...
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Studying of microstructure, interface transition zone and ultrasonic wave velocity of high strength concrete by different aggregates
Taking advantage of studies in microstructure and recognizing the concrete pores lead to more compacting and enhancing its strength and durability....
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Investigation of the Contact Zone Between Cement Stone and Various Types of Aggregates in Concrete
An effective way to prevent shrinkage deformation in concrete structures is the use of expanding additives. In this regard, the theoretical...
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Tensile Fracture Property of Concrete Affected by Interfacial Transition Zone
As a weak link between aggregate and mortar in concrete, interfacial transition zone (ITZ) usually plays a key role in concrete fracture. To...
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Crack damage evolution in concrete coarse aggregates under microwave-induced thermal stress
Coarse aggregates of waste concrete can be efficiently separated from mortar under microwave irradiation. However, the microwave-induced damage in...
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Use of X-ray computed tomography to study structures and particle contacts of granite residual soil
A small problem about soil particle regularization and contacts but essential to geotechnical engineering was studied. The soils sourced from...
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Analysis of damage characteristics and optimization of fan-holes blasting design under high in-situ stresses
In deep mining, the rock mass is characterized by high in-situ stress, which makes the traditional drilling and blasting methods difficult,...