Arya Assadi Langroudi

Dr Arya Assadi Langroudi

Lecturer

Department of Engineering & Construction ,

Dr Arya Assadi Langroudi is a Leader for the Civil Engineering BSc (Hons) degree programme, Senior Lecturer in Geotechnical Engineering and fellow of the Royal Society. He was Principal Investigator for DST-NRF NewtonSAFE (2017-18) and the RAE Industry Academia Partnership TASMIP projects (2018-20). 

Areas Of Interest

The implications of micro-mechanics in understanding emerging geohazards (aging, fatigue, saltation, silicatization and mineral dissolution), with a vision to developing decision-support systems (what-if-analysis) and multifunctional ground improvement techniques

On This Page

OVERVIEW

Dr Langroudi is a graduate of the University of Birmingham, bringing more than 5 years of consultancy experience predominantly gained in tunnel/deep-basement design.

He was granted a PhD in 2014 for research on the micromechanics of collapse in loess. His research led to a 2 year secondment at Atkins, in 2012, where he worked towards the engineering of calcareous collapsing soils into embankments within the scopes of CEN/TC 396. This led to joining Newcastle University as a research associate and then lecturer, where he researched into urban ground improvement decision-support systems and led the Ground Improvement Technologies block CPD/MSc course. 

Dr Langroudi joined the University of East London in 2015. He's published on micromechanics (mineral dissolution, clastic/fractal properties of particles, inter-particle forces, structure-based constitutive models and double-porosity concept). He's also published on computer-aided analysis of excavations (RSFEM, DE-FD programming) and cavity stability. 

Dr Langroudi sits on the editorial board for a number of journals and Engineering Framework Review panel of a number of UK universities.

CURRENT RESEARCH

The Emerging Urban Geohazards (EUG)

The past 10 years have seen a steep rise in the number of fatalities and extent of economic losses stemmed from emerging ground-related hazards (e.g. sinkholes) particularly in urban areas. Geo-hazards are interconnected, continuously and globally strike cities on a worryingly escalating scale, claim lives, and demolish infrastructure.

My research is centred on such modern hazards (e.g. aging and fatigue in soil, urban aerosols and air pollution, urban sinkholes and ground collapse and extreme climates), their interconnectivity and mechanisms of occurrence, methods for effective early detection and preventive/corrective measures. Primarily this is achieved through studying the mechanisms of hazards at micro-scale and developing macro-scale cross-disciplinary solutions (e.g. biologically inspired self-healing technologies). The research offers the earthwork and construction industry tools to detect early cases of hazards, offers simple decision-support useful in the less-developed slimly-resourced far flung, and alternative preventive/corrective measures tailored to problem and location.  

PUBLICATIONS

Selected Journal Publications

  •  
  • Culshaw, M.G., Northmore, K.J., Jefferson, I., Assadi-Langroudi, A., and Fall, F.G. In Press. Collapsible soils in the UK. in Engineering Geology Special Publication, Geohazards, the Geological Society.
  • Ghadr, S., and Assadi-Langroudi, A. 2018. Structure-based Hydro-Mechanical Properties of Sand-bentonite Composites. Engineering Geology. 235, 53-63.
  • Assadi-Langroudi, A., Ng'ambi S., and Smalley, I. 2017. Loess as a collapsible soil: some basic particle packing aspects. Quaternary International, special issue on Aeolian Symposium Beijing. In Press. https://doi.org/10.1016/j.quaint.2016.09.058
  • Ardeshiri-Lajimi, S., Yazdani, M., and Assadi-Langroudi, A. 2016. A study on the liquefaction risk in seismic design of foundations. Geomechanics and Engineering 11(6), 805-820, doi 10.12989/gae.201.11.6.
  • Assadi-Langroudi, A., Jefferson, I. 2016. The response of reworked aerosols to climate through estimation of inter-particle forces. International Journal of Environmental Science and Technology 13(4), 1159-1168. doi 10.1007/s13762-016-0958-7
  • Ardeshiri-Lajimi, S. Yazdani, M., Assadi Langroudi, A. 2015. Control of fault lay-out on seismic design of large underground caverns. Tunnelling and Underground Space Technology. 50: 305-316. doi:10.1016/j.tust.2015.07.002
  • Assadi-Langroudi, A and Jefferson, I. 2015. Constraints in using site-won calcareous clayey silt (loam) as fill materials. Geotechnical Engineering for Infrastructure and Development (ISBN: 978-0-7277-6067-8), In: Slopes and Geohazards, Eds.: Winter, M.G., Smith, D.M., Eldred. P.J.L., and Toll, D.G.  71: 1947-1952. doi:10.1680/ecsmge.60678.vol4.293
  • Assadi-Langroudi, A, Jefferson, I, O'Hara-Dhand K, and Smalley, I. 2014. Micromechanics of quartz sand breakage in a fractal context. Geomorphology. 211:1-10. doi:10.1016/j.geomorph.2013.12.016
  • Assadi-Langroudi, A. 2014. Shear Strength in Terms of Coulomb C-Intercept. Journal of Geotechnical Geology (ISSN  2383-0875). 9(4): 283-292.
  • Assadi-Langroudi, A. 2014. Discussion: Quantitative Evaluation of Microstructure Characteristics of Cement Consolidated Soil. Bulletin of Engineering Geology and Environment. 73(1): 203-204.  doi 10.1007/s10064-013-0558-4
  • Assadi-Langroudi, A., and Jefferson, I. 2013. Collapsibility in calcareous clayey loess: a factor of stress-hydraulic history. International Journal of Geomate. 5(1): 620-627.  
  • Assadi-Langroudi, A, Yasrobi SS. 2012. Drainage Controlled Uniaxial Swelling Cell. ICE Proceedings Geotechnical Engineering, 166(4), 357-364.
  • Assadi-Langroudi A, Yasrobi SS. 2010. Microfabric transformation of Teleqan white clay under constant volume swelling condition. Engineering Geology, 116(3-4), 207-217.
  • Assadi-Langroudi A, Yasrobi SS. 2009. A micro-mechanical approach to swelling behavior of unsaturated expansive clays under controlled drainage conditions. Applied Clay Science, 45(1-2), 8-19.
  • Assadi-Langroudi A, Momtazi A. 2004. Revisiting the Current Design Practice for FRP Reinforced Concrete Structures. The Bulletin of Concrete Society. 14, 32-42 [in Farsi].
  • Yazdani, M., Yazdani, S., Assadi-Langroudi, A., and Ghadr, S. 2018. Hydro-mechanical Behaviour of Rock Abutments for Arch Dams: A Parametric Study. Journal of Rock Mechanics and Geotechnical Engineering
  • Theron, E., Assadi-Langroudi, A., Smalley, I., and O'Hara-Dhand, K. 2018. Soil pH Signatures in Collapsible Calcareous Urban Soils. Acta Geotechnica.
  • Assadi-Langroudi, A. 2018.  PTD Modelling and Application for Loess/Loess-like Deposits of England. Proceedings of the Geologists' Association.
  • Ghadr, S, Mirsalehi, S., and Assadi-Langroudi, A. 2018. Compacted Expansive Elastic Silt and Tyre Powder Waste. Journal of Cleaner Production.
  •  

Conference Papers

  •  
  • Assadi-Langroudi A, O'Hara-Dhand K, Smalley I., Ciupala, M.A., and Theron, E. 2016. Stiffness degradation patterns in loess: lessons for building the High Speed rail 2 on Undisturbed Devensian loams. Eds. Markovic, S.B. In: 19th Loess2M: Modelling and Mapping. 2016, University of Novi Sad, Serbia. ISBN 978-86-7031-408-5.
  • Assadi-Langroudi, A. 2014. A Proposed Form of the Principle of Effective Stress for Unsaturated Hardening Soils. GEST Seminar Series, Newcastle University.
  • Assadi-Langroudi A, O'Hara-Dhand K, Jefferson I, Smalley I. 2013. The Control of Loess Grain Shape on Size Distribution Data. In: 19th Windy Day: UK aeolian research community meeting. 2013, Southampton, UK: University of Southampton.
  • Assadi-Langroudi A, Jefferson I. 2013. The Loess Genome Project. In: INQUALoess2013: Loess & Dust: Geography-Geology-Archaeology. Leicester, UK: University of Leicester: Print Services.
  • Assadi-Langroudi A, Yasrobi SS, Nasrollahi N. 2009. A Comparison between the Lateral Deformation Monitoring Data and the Output of the FEM Predicting Models of Soil Nailed Walls based on Case Study. In: 62th Canadian Geotechnical Conference and 10th Joint CGS/IAH-CNC Groundwater Conference. 2009, Halifax, Canada.
  • Assadi-Langroudi, A. 2009. Performance based design. Vortragsreihe Geotechnik an der Technischen Universität Graz. Montag.
  • Assadi-Langroudi A, Yasrobi SS. 2007. Effect of Acidic-Alkaline Pollution Intrusion into an Unsaturated Expansive Soil Mass on Swelling Pressure Parameter. In: 60th Canadian Geotechnical Conference and 8th Joint CGS/IAH-CNC Groundwater Conference. Ontario, Canada.
  • Assadi-Langroudi A, Momtazi A. 2003. Properties of FRP Reinforced Concrete Structures, the 5th Student Conference of Civil Engineering, Polytechnique Tehran University [in Farsi].
  •  

Invited Lectures

  •  
  • "Performance based design", Vortragsreihe Geotechnik an der Technischen Universität Graz. Montag 19 Oktober 2009.
  • "A Proposed Form of the Principle of Effective Stress for Unsaturated Hardening Soils", GEST Seminar Series, Newcastle University. 15 December 2014.
  •  

MODULES

Leading:

  • EG6121 - Final Year BSc (Hons) - Geotechnical Design (15 credits)
  • EG5102 -Year 2 BEng (Hons) - Geotechnical and Material Analysis (30 credits)
  • EG5118 - Year 2 BSc (Hons) - Geotechnical properties (30 credits)
  • Engineering Geology Residential Field Courses EG5118 and EG5102

Contributing to:

  • EG6110 - Research Dissertation at BSc (Hons) level
  • EG6104 - Research Dissertation at BEng (Hons) level
  • EG7011 - Research Dissertation at MSc level

Previous teaching leadership:

  • Ground Improvement Technologies (leader) - Newcastle University

Other responsibilities:

  • Personal tutor for first year students on the BEng Civil Engineering programme
  • Member of Civil Engineering & Construction Recruitment working group
  • Member of Civil Engineering & Construction Outreach working group