A5001582988- Rock Mechanics and Modeling
- Seismic Waves and Analysis
- Landslides and related hazards
- earthquake and tectonic studies
- Microbial Applications in Construction Materials
- Geotechnical Engineering and Analysis
- Seismic Performance and Analysis
- Microbial Fuel Cells and Bioremediation
- Grouting, Rheology, and Soil Mechanics
- Seismic Imaging and Inversion Techniques
- Masonry and Concrete Structural Analysis
- Innovations in Concrete and Construction Materials
- Calcium Carbonate Crystallization and Inhibition
- Geotechnical Engineering and Underground Structures
- Geophysical Methods and Applications
- Structural Health Monitoring Techniques
- Geotechnical and Geomechanical Engineering
- Geological Modeling and Analysis
- High-pressure geophysics and materials
- Hydraulic Fracturing and Reservoir Analysis
- Fluid Dynamics Simulations and Interactions
- Geophysics and Sensor Technology
- Tunneling and Rock Mechanics
- Vibration and Dynamic Analysis
- Marine and environmental studies
Ben-Gurion University of the Negev
2014-2024
Arizona State University
2013-2014
Lafayette College
2013-2014
University of Cambridge
2013-2014
Technion – Israel Institute of Technology
2006
Consideration of soil as a living ecosystem offers the potential for innovative and sustainable solutions to geotechnical problems. This is new paradigm many in engineering. Realising this requires multidisciplinary approach that embraces biology geochemistry develop techniques beneficial ground modification. paper assesses progress, opportunities, challenges emerging field. Biomediated geochemical processes, which consist reaction regulated by subsurface microbiology, currently being...
Microbially induced calcite precipitation (MICP) is a biomediated cementation process that uses natural microbial enzymatic activity to improve the geotechnical properties of granular soils. In this study, two sets experiments are completed using soil samples obtained from different depths evaluate feasibility stimulating native ureolytic microorganisms for MICP at relevant applications. Batch and column five stimulation solutions demonstrate ureolysis improved with an enhanced solution,...
Microbial-induced CaCO3 precipitation (MICP) via urea-hydrolysis (ureolysis) is an emerging soil improvement technique for various civil engineering and environmental applications. In-situ application of MICP in soils performed either by augmenting the site with ureolytic bacteria or stimulating indigenous bacteria. Both these approaches may lead to changes bacterial population composition accumulation large quantities ammonium. In this batch study, effective ureolysis was stimulated coastal...
Abstract. Microbial-induced CaCO3 precipitation (MICP) is an innovative technique that harnesses bacterial activity for the modification of physical properties soils. Since stimulation MICP by urea hydrolysis in natural soils likely to be affected interactions between ureolytic and non-ureolytic bacteria, we designed experiment examine bacteria effect these on MICP. An artificial groundwater-based rich medium was inoculated with two model species Sporosarcina pasteurii Bacillus subtilis. The...
Microbial-induced calcite precipitation (MICP) is a soil amelioration technique aiming to mitigate different environmental and engineering concerns, including desertification, erosion, liquefaction, among others. The hydrolysis of urea, catalyzed by the microbial enzyme urease, considered most efficient pathway for MICP. Biostimulated MICP relies on enhancement indigenous urea-hydrolyzing bacteria providing an appropriate enrichment medium, as opposed bioaugmentation, which requires...
Microbially-induced calcite precipitation (MICP) is an emerging ground-modification technique. This paper presents the results of laboratory experiments that elucidate some biological factors affecting bioaugmentation and biostimulation strategies MICP. Co-culture suggest ureolytic bacterium Sporosarcina pasteurii (DSMZ 33) might release enzyme urease once introduced into a medium containing non-ureolytic Bacillus subtilis 6397) due to lysis by latter, resulting in uncontrolled...
Abstract The Dead Sea Transform (DST) is the source for some of largest earthquakes in eastern Mediterranean. seismic hazard presented by DST threatens Israeli, Palestinian, and Jordanian populations alike. Several deep structurally complex sedimentary basins are associated with DST. These up to 10 km typically bounded active fault zones. low seismicity DST, sparse network, limited coverage result a critical knowledge gap. Therefore, it necessary complement instrumental data synthetic based...
Abstract We study the propagation of seismic waves, resulting ground motions, and their amplification atop sedimentary structures underlying continental passive margins. employ a set generic models with increasing complexity within framework 3D numerical scheme. The basic geological structure velocity model were derived from subsurface Israeli coastal plain where soft sediments form wedge over stiffer bedrock fill canyons that incise deep into bedrock. Ground motions modeled for both seaside...
The kinematics of overhanging rock slopes and the mechanical constraints associated with this specific slope geometry were studied. Investigation problem began a generalized rigid body analysis was followed by numerical discontinuous deformation analysis, both which performed in two dimensions. It found that eccentric loading hence development tensile stresses at base control their stability. Global instability, is typically manifested forward rotation failure mode, may ensue if...
Using a biographic-like approach, this article presents the initial results of study an elite Iron Age house at Tel 'Eton, from its conception, through birth and life, to death decomposition. Massive preparations preceded construction house, latter incorporated continuous foundations, quality building materials, including ashlar stones. The was pre-planned, some original rooms had two doorways leading them, in order enable easy future sub-division, without endangering structure's physical...
We present results from experiments of microbially induced calcite precipitation (MICP) in co-cultures model bacteria and studying the ureolytic potential native bacterial extracts. The were designed to study possible interactions associated with introduction exogenous into a soil. It was found that bacteria, S. pasteurii, increasing concentrations nonureolytic B. subtillis, rate ureolysis increased concentration subtillis. postulate rates are attributed release urease by pasteurii response...