Authors:

Daniel Santamaria

Date Created:

Not specified

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About Paper:

Post-installed connections play a vital role in securely fastening various elements to existing concrete structural elements, such as columns, beams, walls, and other load-bearing components. In the past, various types of fastening systems such as post-installed reinforcing steel bars, bonded anchors, or expansion anchors have been investigated. Another system that has drawn attention is the use of Glass Fiber Reinforced Polymer (GFRP). Advantageous properties like non-corrosive nature, high tensile strength, and lightweight properties favor the use of GFRP. Most studies so far investigated the capacity of post-installed GFRP bars located away from the edge. However, in real life application, the edge distance can be relatively small. This research work aims to obtain more insight into the behavior of post-installed GFRP bars in concrete with the focus on the edge distance of the bar. This presentation shows the experimental results of a test on the behavior of post-installed GFRP bars in concrete subjected to tension. The GFRP bars were post-installed into the concrete using high-strength epoxy mortar after standardized cleaning of the borehole. This study focused on the influence of the edge distance on the pull-out capacity of the bar, which failed either due to pull-out or splitting of concrete. The results show that the edge distance significantly affects both capacity and failure mode of the GFRP bar. While a pull-out failure was observed in cases where the GFRP was located away from the edge, premature concrete splitting occurred with relatively small edge distance.

Source:

Purdue University / 2023

Topics:

No topics listed

Co-authors:

Daniel Santamaria