Cyclic response of rubberised alkali-activated concrete-filled steel tubes + Networking drinks

*NEW. A recording of the talk is available on our YouTube Channel. Here is the link.

This evening event is organised by the SECED Young Members' Subcommittee and is chaired by Marco Baiguera. The event will be held in-person at the Institution of Civil Engineers in London and will be broadcast online. It will be followed by a networking event (see below). 


This study examines the cyclic behaviour of square steel tubes infilled with rubberised alkali-activated concrete. The concrete is made up of a slag-based mix activated with solid anhydrous sodium metasilicate. The rubber content, as replacement of natural aggregates, is varied up to a high replacement ratio of 60%. Specimens are tested under lateral cyclic loading with a co-existing axial load of 15 and 20% of the cross-sectional axial capacity. A detailed account of the cyclic tests is given, covering 8 concrete-filled steel specimens and 2 hollow steel specimens. Complementary material and section tests are also provided. The experimental results are discussed in detail covering the member stiffness, displacement, capacity, ductility, energy dissipation and failure mechanisms. The results show that while high rubber replacement ratios result in significant losses in concrete strength, the corresponding reduction in member capacity of the concrete-filled tubes is significantly less due to the contribution of steel confinement. Specimens with rubberised concrete infill exhibited higher ductility and energy dissipation when compared to specimens incorporating non-rubberised concrete infill. The test results generally demonstrate the favourable inelastic lateral cyclic behaviour of the steel tubes infilled with rubberised alkali-activated concrete.

About the speaker

Mohamed is a PhD student in the Department of Civil and Environmental Engineering at Imperial College London. His PhD research is focused on the mechanical and structural behaviour of rubberised alkali-activated concrete, including the material characterisation and structural response under cyclic loading conditions. His technical interests involve developments in sustainable concrete materials, numerical modelling, and mechanics-based solutions for concrete structures under various loading conditions.

Networking drinks

After the talk, a networking event (7.15-8.30PM) will be hosted in the ICE Bar. SECED will provide one free drink in the bar to all who attends the lecture. This is a great opportunity for students and early career professionals to make meaningful connections with those in the earthquake and civil engineering dynamics community. We are looking forward to seeing you!

Further information

  • In-person attendance at this meeting is free and no registration is required. Seats are allocated on a first come, first served basis. Tea, coffee and biscuits will be served from 5.30pm - 6pm. 
  • The event will also be broadcast online. To attend the presentation online, please register for the event prior to joining via this link. The registration process will provide you with the link you need to join the event.

The event will be preceded by the AGM of the Young Members of SECED (6-6.30PM).

Event Details

Event Date 25/10/2023 6:30 pm
Event End Date 25/10/2023 8:30 pm
Location Institution of Civil Engineers

Location Map