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, strut and tie modelling, non-linear finite element analysis, the design of reinforced concrete slabs, control of cracking induced by early age thermal contraction and subsequent shrinkage, structural design.
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.
Research Student Supervision
Oikonomou-Mpegetis,S, Design of steel fibre reinforced concrete slabs
Eder,MA, Inelastic behaviour of hybrid steel/concrete column to flat slab assemblages
Yu,J, Assessing ground interaction effects and potential damage to existing tunnels before and after new excavation works
Fang,L, Strut and tie modelling of reinforced concrete
Sahraei,NNA, Design of concrete powerpoles
Abela,J, Design of blinding struts
Amini,H, Automated reinforcement design for structures loaded in plane stress
Afshar,N, Modelling of tension stiffening in RC slabs
Sagaseta,J, The influence of aggregate fracture on the shear strength of reinforced concrete beams
Tay,UL, Improved design methods for reinforced concrete wide beam floors
Kabosh,MA, Modelling time dependent behaviour of axially restrained reinforced concrete slabs
Hossain,T, Numerical Modelling of deflections of reinforced concrete slabs under service loads