Reza Mahinroosta

Reza Mahinroosta
Charles Sturt University · School Of Engineering

Doctor of Philosophy

About

21
Publications
3,275
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268
Citations
Introduction
I have conducted research in a broad range of geotechnical engineering application including laboratory and numerical modelling. This includes remediation of contaminated soils, modelling the soil collapse due to saturation, analysis and rehabilitation of geo-structures against earthquakes and vibrations, modelling and rehabilitation of dams and tunnels, modelling the rock masses and rock joints behaviours.

Publications

Publications (21)
Article
Full-text available
This paper investigates the effect of particle shape on the stress reduction and collapse deformation of gravelly soil using a medium-scale direct shear test apparatus under different relative densities, normal stress, and shear stress levels. A new method based on the Micro-Deval test was introduced to produce sub-angular particles from angular pa...
Article
The historic usage and discharge of per- and polyfluoroalkyl substances (PFAS) containing chemicals have produced many contaminated sites and PFAS contamination has become a global concern due to their persistence, widespread distribution, and potential adverse impacts for human and environmental health. However, there have been limited investigati...
Preprint
In this paper, the effect of particle shape is investigated on the stress reduction and collapse deformation of gravelly soil using medium-scale direct shear test apparatus under different relative densities, normal stress, and shear stress levels. The Micro-Deval test was used to produce sub-angular particles from angular particles with continuous...
Article
The concentrations of PFOS and PFHxS in a contaminated site in regional New South Wales, Australia, were above the human health screening values for industrial land use. In this study, the effects of different management options on the quality of groundwater were investigated through numerical modelling. At first, a complete transfer model includin...
Article
In this study, a numerical model was developed to predict perfluorooctane sulfonate (PFOS) migration in a contaminated site due to precipitation and evapotranspiration over 100 years. The soil physicochemical properties including sorption isotherm characteristics were used to model PFOS transport (advection and dispersion), and attenuation (adsorpt...
Article
PerFluoroOctane Sulfonate (PFOS), is a toxic anthropogenic chemical that has been produced and gradually released into the environment for the past seven decades. An accurate audit of global PFOS contamination and contaminated sites are yet to be published. The available technologies to remediate PFOS contaminated soil are limited and often basic s...
Article
PerFluoroOctane Sulfonate (PFOS), is a toxic anthropogenic chemical that has been produced and gradually released into the environment for the past seven decades. An accurate audit of global PFOS contamination and contaminated sites are yet to be published. The available technologies to remediate PFOS contaminated soil are limited and often basic s...
Article
Contamination of soils with poly- and perfluoroalkyl substances (PFAS) has become a challenging issue due to the adverse effects of these substances on both the environment and public health. PFAS have strong chemical structures and their bonding with soil makes them challenging to eliminate from soil environments. Traditional methods of soil remed...
Article
In this study, stress reduction due to saturation of sandy soils is investigated via conventional triaxial shear strength apparatus. Triaxial tests were performed on dry samples, saturated samples and initially dry samples followed by saturation during shearing. Effects of stress states, initial loading and unloading and particle-size distribution...
Conference Paper
Damages due to a fault activity can be divided into dynamic rupture and quasi-static rupture. In some special projects like roads, channels, and pipelines, engineers have to design and construct them on the faults inescapably. In addition to seismic design, the effects of fault rupture crossing the structures must be considered in the design proces...
Data
Asphaltic concrete has been used as waterproofing core in embankment dams, since 1948. In this application, granular materials are used around the asphaltic concrete as filter, which makes a complicated behavior in the interface and needs to be researched by experiments and modeling. This paper describes experimental work and the results of investi...
Article
Full-text available
Asphaltic concrete has been used as waterproofing core in embankment dams, since 1948. In this application, granular materials are used around the asphaltic concrete as filter, which makes a complicated behaviour in the interface and needs to be researched by experiments and modelling. This paper describes experimental work and the results of inves...
Article
Full-text available
Collapse settlement is one of the main geotechnical hazards, which should be controlled during first impoundment stage in embankment dams. Imposing large deformations and significant damages to dams makes it an important phenomenon, which should be checked during design phases. Also, existence of a variety of contributing parameters in this phenome...
Article
Dried granular material subjected to saturation under certain vertical stresses, results in collapse settlement due to sliding in the grain contacts, particle rearrangement and their breakage. Collapse settlement is particularly important in upstream side of clay core embankment dams during first impounding; this can be up to 1% or more of the dam...
Article
In the first impounding of rockfill dams, additional settlements occur in upstream side in saturated rockfills due to collapse phenomenon; even high rainy seasons can cause additional deformation in the dumped rockfills. Unfortunately these displacements are not taken into account in the conventional numerical models which are currently used to pre...
Article
Using of plastic concrete for construction of cutoff wall is known as a method to reduce and control of seepage which has been developed in recent three decades. Plastic concrete cutoff wall is suggested when a dam is constructed on an alluvial foundation with high permeability. In these conditions, a proper material is the one that can carry high...
Article
Loose saturated sand and alluvial strata are susceptible to liquefaction during earthquake. Simple and empirical method for evaluating their resistance against liquefaction is based on the results of standard penetration tests (SPT). One of the most important parameter which affects liquefaction resistance is initial stress; Standard procedures for...
Article
Existence of discontinuities causes higher deformability and lower strength in rock masses. Thus joints can change the rock mass behaviour due to the applied loads. For this reason properties and orientation of the joint sets have a great effect on the stability of rock slopes. In this paper, after introducing some numerical methods for evaluating...
Article
Another alternative for Narmashir Rock fill Dam is the use of a concrete core instead of clayey core. In this design, thickness of core, filter and transition are 1, 1.5 and 3 meter separately. Rock fill slope at both upstream and downstream face is 1.6 H. to 1 V. For preparing the initial structure for dynamic analysis, static analysis including e...

Questions

Question (1)
Question
I completed static analysis on a structure, but I need to add a new element type in the second step. The new element is a mass element to simulate the effect of hydrodynamic pressure. I have added a command file as follows, but Workbench skipped and did not consider it in the analysis:
ET, 80, mass21
R, 80, 1000, 100000,0
TYPE,80
REAL,80
E, 1497

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Projects

Project (1)
Project
Dear Colleagues and Friends, As the Lead Editor, it is my pleasure to let you know that a new special issue with the title of: "Stability Analysis of Underground Rock Structures: from Design to Application" is now open for submissions in the journal of Advances in Civil Engineering. Potential topics include but are not limited to the following: • Theoretical and numerical approaches to the design and analysis of underground rock structures • Closed-form analytical and semi-analytical approaches • Finite element, finite difference, discrete element, and coupled numerical modelling approaches • Shallow and deep underground structures • Analysis under static/dynamic loading conditions • Coupled-field analysis and rock-structure interaction problems • New developments made in the convergence-confinement method to design underground rock structures • Developments in the geometry, in-situ stress anisotropy, loading conditions, and the active/passive support systems • Application of new constitutive models in the design and analysis of underground rock structures • Consideration of the effects of large strains in the design and analysis of underground rock structures • Investigations on the effects of delayed support installation, staged construction, facing effects, and the distance from the facing on the design and analysis of underground rock structures • Design and analysis of underground rock structures in the fractured rock mass • Application of AI techniques to the design and analysis of underground rock structures • Field construction/monitoring case reports with a special reference to the design method, support system and the structure performance Further details and description of this newly announced issue can be found here: (https://www.hindawi.com/journals/ace/si/213894/). Papers are published upon acceptance, regardless of the Special Issue publication date. By means of this email, I, kindly, invite all the researchers who are active in the field to submit their manuscripts for the possible publication in the journal. Best Regards, Hadi Hasanzadehshooiili