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"Behaviour of polymer-filled–concrete–steel double-skin tubular columns" by Kasun Wijesooriya, Damith Mohotti et al.

The paper presents a study on the suitability of using a Polymer as a protective layer for critical structural elements prone to impact damage. Conventional damage mitigation methods include using an outer steel jacket with a void, protecting the inner concrete-steel composite column. Whilst it is usually found that the outer steel jacket can partially negate the impact load, the inner column still experiences a significant brunt of the impact load. In order to minimise the damage to the overall critical structural element, a concept of a Polyurethane Polymer-Filled–Concrete–Steel Double-Skin Tubular Column is proposed. Scaled-down versions of two polymer-filled double-skin column configurations were tested under low-velocity impact using a drop tower. The pre and post-damage columns were tested for their axial capacities. These polymer-filled columns were critically compared to their nominal samples without the Polyurethane fill. It was shown that the mid-span deflection and local ....

Polyurethane Polymer Filled , Steel Double Skin Tubular Column , Concrete Filled Steel Tubular Member , Ouble Skinned , Numerical Modelling , Ransverse Impact Loading ,

Could seaweed remove carbon from the atmosphere after all?

Seaweed farming might prove to be a more effective way of removing carbon from the atmosphere than previously thought, according to the authors of a new study. ....

Mar Fernandez Mendez , Franziska Elmer , Nature Communications , Great Atlantic Sargassum , State Key Laboratory , Marine Environmental Science , Numerical Modelling , Atmospheric Sciences , Geophysical Fluid Dynamics , Great Atlantic Sargassum Belt ,