Abstract This study focuses on the improvement of the thermo-mechanical properties of AC-20 asphalt A by incorporating Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride (SEBSR) and sulfur (S). The effect of two different mixing speeds, 1000 and 1500 rpm, was...
Abstract In the 1940’s, a reinforced concrete (RC) railway bridge located in central Johannesburg was constructed using Witwatersrand Quartzite, at the time, unknown to be an alkali-silica reactive aggregate. The bridge currently displays signs of distress in the form of severe map-cracking. ...
there’s so much to process about how we “got through” these virtual teaching days, and even more uncertainty regarding how school will operate in the fall. Let’s all promise to give ourselves permission to rest, and not try to anticipate every “what if” the next school year might ...
printing is able to pattern liquid precursors, including silicone elastomers, in a layer-by-layer fashion via pneumatic liquid dispensing (Fig.1).[40,41]This methodology facilitates the construction of 3D structures ranging from submillimeter to centimeter scales, allowing for applications in the field...