Dr Robert Vollum joined Imperial College as a Lecturer in the early 1990s following a decade of working in industry. He has been a Reader in concrete structures since 2011. Dr Vollum's research interests are wide, encompassing the following topics: long-term deflections of reinforced concrete slabs, beam-column joints, shear in beams, punching shear, numerical modelling of reinforced concrete structures, strut and tie modelling, and control of early age thermal cracking.
He has developed a method for predicting the deflection of slabs that takes construction loading into account. The numerical work was calibrated with data from the in-situ concrete building at BRE Cardington with which he was closely involved. More recently, he led an EPSRC project (EP/D505488/1) which developed a design method for using concrete blinding as struts in cut and cover excavations.
Dr Vollum also represents Concrete Society on BSI Committee for EC2 B/525/2 Structural Use of Concrete. He is a member of the subgroup of B/525/2 which is responsible for developing and maintaining the UK National Annex to EC2. He is also the UK technical expert on TG4 of WG1/CEN/TC 250/SC 2. TG4 is the European committee which is considering revisions to shear, punching and torsion in the next version of EC2 which is due in 2020. He is also a member of fib Task Group 4.2 which evaluates and develops models for ultimate limit states of concrete structures.
et al., Numerical modelling of punching shear failure of RC flat slabs with shear reinforcement, Magazine of Concrete Research, ISSN:0024-9831
Elwakeel A, Vollum R, Shear enhancement in RC cantilevers with multiple point loads, Magazine of Concrete Research, ISSN:0024-9831
Oliveira FGBS, Soares LFS, Vollum RL, Design considerations on the influence of slab continuity on punching resistance of flat slabs, Ibracon Structures and Materials Journal, ISSN:1983-4195
et al., 2020, Punching shear design of RC flat slabs supported on wall corners, Structural Concrete, ISSN:1464-4177
et al., 2019, Efficient 3D modelling of punching shear failure at slab-column connections by means of nonlinear joint elements, Engineering Structures, Vol:197, ISSN:0141-0296, Pages:1-19