@article{Yoichi Mimura_Vanissorn Vimonsatit_Isamu Yoshitake_2018, title={INVESTIGATION OF CURING PERIOD OF CEMENTITIOUS ADHESIVE AND PERFORMANCE OF RUST PREVENTION}, volume={14}, url={https://geomatejournal.com/geomate/article/view/1587}, abstractNote={<p>A steel-concrete composite structure needs generally mechanical shear connectors such as<br>headed studs to ensure efficient load resistances. As an alternative to shear studs, a type of cementitious<br>adhesives has been developed to connect a steel-concrete composite structure. The unique feature of this<br>adhesive is the improved bond performance with fresh concrete which depends on the curing age of the<br>adhesive. This paper presents the outcome of fifteen flexural tests of elemental steel-concrete composite<br>beams with various curing ages of the adhesive to investigate the appropriate curing period. Shot blasting<br>steel plate and the un-shot blasting steel plate were prepared to examine the bond performance from the<br>surface condition of the steel plate. The result of the flexural tests indicates that the bond performance<br>between the steel plate and the concrete is optimum when the curing periods are 7 - 14 days. The tests with<br>longer curing age produce similar bond performances with the tests at 7 days. Use of steel plate without shot<br>blasting may be undesirable for the composite structure using the adhesive. In addition to the flexural tests, 8<br>deformed bars with and without adhesive coating were exposed to a field condition to investigate the rust<br>preventive performance of the adhesive. The deformed bars without the adhesive had already corroded at 5<br>days after exposure. The observation showed the deformed bar with the adhesive was hardly deteriorated<br>after 200 days.</p>}, number={43}, journal={GEOMATE Journal}, author={Yoichi Mimura and Vanissorn Vimonsatit and Isamu Yoshitake}, year={2018}, month={Mar.}, pages={91–97} }