Authors:

Edward Vane

Date Created:

Not specified

Course Title:

Professor:

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About Paper:

A challenge commonly posed to civil engineers is the expansion of preexisting concrete structures, such as adding lanes to bridges. This generally requires exposing the rebar reinforcement already present in the structure through destructive action, which is often an inefficient use of both time and resources. This research aims to develop robust standards for the implementation of post-installed (PI) bonded rebar anchors, which would drastically lower the cost and time required to expand these preexisting concrete structures. To develop such guidelines a parametric study was conducted using the specialized finite element analysis (FEA) software MASA, with the findings being confirmed via laboratory testing. The failure load for PI bonded rebar anchors in tension was simulated while varying parameters such as concrete cover, rebar spacing, embedment depth, and failure mode. These initial simulations were recreated in Bowen Laboratory using multiple true-to-size concrete specimens, with pull-out tests being performed using hydraulic actuators while measuring the various loads on the specimen. Using this data, a relationship between the spacing between the PI bonded anchors and the failure load will be determined. This relationship will be for the pull-out failure mode, as it is expected that concrete cone failures as well as mixed failure modes will behave differently. Future work on this topic includes developing comparative models for PI bonded rebar anchors under these different failure modes. Keywords: [no keywords provided]

Source:

Purdue University / 2024

Topics:

No topics listed

Co-authors:

Edward Vane