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Experimental and numerical simulation of corrosion induced expansive pressure on concrete cover

In this research, an investigation was carried out through experimentation and numerical modeling to evaluate the cracking pressure induced due to corrosion of reinforcement for different cover thicknesses, grades of concrete and bar locations. | Nội dung Text Experimental and numerical simulation of corrosion induced expansive pressure on concrete cover Engineering Solid Mechanics 8 2020 21-30 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Experimental and numerical simulation of corrosion induced expansive pressure on concrete cover Sheikh Shakiba Abu Zakir Morshedb and Md. Hasan Alia a Graduate Student Department of Civil Engineering Khulna University of Engineering amp Technology Khulna Bangladesh b Professor Department of Civil Engineering Khulna University of Engineering amp Technology Khulna Bangladesh A R T I C L EI N F O ABSTRACT Article history In this research an investigation was carried out through experimentation and numerical modeling Received 10 July 2019 to evaluate the cracking pressure induced due to corrosion of reinforcement for different cover Accepted 3 September 2019 thicknesses grades of concrete and bar locations. The model was also used to determine the Available online patterns of crack for a different number of bars and the effect of bar diameter on cracking pressure. 3 September 2019 Keywords The critical pressure was measured experimentally by applying hydraulic pressure through a hole Concrete cover in concrete cubes of 150 mm. Abaqus 6.14 was used as a modeling platform. From the Concrete grade experimentation and numerical modeling it was found that with the increase of cover thickness Corrosion the critical pressure was increased irrespective of bar locations. A lower cracking pressure was Cracking pressure observed for corner bar with respect to the sidebar. On the other hand with the increase in bar Hydraulic oil diameter a decrease in cracking pressure was observed. The critical pressure observed was also increased with higher grades of concrete. For corner bars with cover thickness 37.5 mm the critical pressure was found as 6-10 MPa and it increased up to 17 MPa for the cover thickness of 64 mm for different