Authors:

Nathan Joseph

Date Created:

Not specified

Course Title:

Professor:

Not specified

About Paper:

Reinforced concrete (RC) bridges sometimes need to be widened in order to accommodate an increased flow of traffic, and post-installed rebar (PIR) technology is an easy and efficient way to do so. PIR installments are often used in RC construction to add new concrete members onto existing structures without the need for tearing down the existing concrete. PIR systems are convenient to install and can produce stronger bonds than cast-in rebar, and so are very useful in a number of different applications. However, because this technology has only relatively recently been adopted into RC construction codes, research still needs to be done into the optimization of the design process. Existing models used for the design of PIR installations are overly- conservative and often produce unnecessary design requirements. This project aims to produce a more accurate model for PIR systems in order to improve the efficiency of PIR application in RC bridge construction. To do this, pull-out tests will be done using a specially-designed RC specimen to determine the effect of individually varying rebar diameter, embedment depth, splice length, concrete cover, and steel reinforcement on the tensile strength of the PIR system. Using the measured tensile strength and the observed mode of failure, an equation can be developed which more accurately models the system. After an accurate model is developed, it will be tested on an RC bridge widened using PIR technology, proving its applicability to real- world construction projects. Keywords: [no keywords provided]

Source:

Purdue University / 2024

Topics:

No topics listed

Co-authors:

Nathan Joseph