ISSN:2321-6212

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Unequal train collision flexural performance of circular RC components with CFRP shear strengthening: experimental and model assessment


Webinar on International Conference on Material Science and Engineering

February 24, 2022 | Webinar

Khalil AL-Bukhaiti

PhD Candidate, School of Civil Engineering, Southwest Jiaotong University, China

ScientificTracks Abstracts: Res. Rev. J Mat. Sci

Abstract

The analysis of the dynamic response of the RC and CFRPRC under unequal span effect is provided. Unequal lateral impact tests were carried out on RC members that had been wrapped in one and six layers of CFRP. It is able to develop the deflection-time history curves of the two components under high-impact energy circumstances. In tests, CFRP increases the impact resistance of the component. It is possible to decrease maximum component deflection and change the force mode using carbon fiber reinforced polymer (CFRP). RC members shear predominantly as a result of considerable concrete damage, while CFRPRC components bend primarily as a result of slight concrete damage. When wrapped in many layers of CFRP, it is more prone to cracking. The model's calculations are consistent with the results of the tests. These studies were carried out in collaboration with numerical simulation work, which investigated the impact force exerted on members once components were subjected to unequal-lateral impacts. Regardless of the impact velocity, the lateral impact on an unequal span promotes severe shear failure of reinforced concrete members in the short span zone. CFRPRC components, on the other hand, exhibit bending deformation that is proportional to the impact velocity. Increasing the reinforcement ratio of RC members has little effect; however, increasing the impact resistance of CFRPRC components has a significant impact. Greater reinforcing ratios are utilized in order to avoid steel rupture. In another method, a simple method to coated and filled with silver Bulk thermal diffusivity and thermal conductivity of Ag hybrid MWCNTs were increased by 242% and 255%, respectively. Furthermore, current-voltage measurements using tuna probe in atomic force microscopy showed higher number of charge carriers in the Ag hybrid nanotubes compared to pristine MWCNTs which resulted in up to 173% increase in their electrical conductivity.

Biography

Khalil AL-Bukhaiti has his expertise in evaluation and passion for improving structural engineering constructions. His evaluation model based on responsive constructivists creates new materials for improving structural members' resistances. After years of experience in research, evaluation, teaching, and analysis, he has built this model both in laboratories and educational institutions. The focus points on his direction belong to effects of impact force coming from train derailed collisions on the reinforced concrete members (i.e., columns, bridges piers), which is a methodology that utilizes the previous generations of evaluation: analysis, design, and evaluations. It allows for theories' assumptions. This approach is responsive to all field practice and has a different way of focusing.