PhD position in geotechnical engineering: “The effect of surcharging on secondary settlement in peat”
Intact peatland ecosystems serve several important functions, one of which is carbon sequestration. However, excavate-and-replace is currently the preferred method of handling peat encountered on road schemes in Ireland, engendering CO2 release with negative environmental implications. Surcharging, a ground improvement process that enables compressible soils to remain in place, is largely unproven in peat where secondary settlement can be very significant, and the technique is not currently permitted by Transport Infrastructure Ireland in highly organic soils. The objective of this research is to appraise the technical viability of surcharging as a method of secondary settlement reduction in peat. Specifically, the research will aim to capture the effect of surcharge magnitude and duration on the extent of longterm settlement reduction (i) at laboratory scale (extended-duration oedometer tests), (ii) in the field (surcharge trials facilitated by industrial partners) and (iii) numerical modelling, using a soil model appropriate to peat. By addressing technical knowledge gaps, this 4-year PhD project has the potential to lead to an improvement in the environmental credentials of road schemes in peatlands, with international application.
Full description: Surcharging in Peat
Dr. Bryan McCabe, Civil Engineering, School of Engineering, NUI Galway.
Phone +353 (0)91 492021. email: email@example.com
Submit an electronic copy of your Curriculum Vitae, a cover letter expressing your suitability for the
position and a copy of your driving licence to Dr. Bryan McCabe (firstname.lastname@example.org).
5pm to Friday 26th November, 2021.