Graduation Semester and Year

2019

Language

English

Document Type

Thesis

Degree Name

Master of Science in Civil Engineering

Department

Civil Engineering

First Advisor

Himan Jalali

Second Advisor

Xinbao HojatYu

Abstract

The serviceability and structural performance of reinforced concrete pipes could deteriorate for many reasons. The loss in structural capacity and other structural operations may drastically affect the surrounding environment, public health and the economy. This research is directed towards the estimation of remaining service life, and to evaluate the level of risk of failure of reinforced concrete sewer pipes (RCSP) that are subjected to continuing corrosion due to sulfide attack that in turn leads to loss of pipe thickness caused by excessive deterioration along the pipe’s interior wall. In order to estimate the remaining service life, reliability theory is used by applying concrete cover limit state function, and time-dependent parameters are used to calculate the probability of the pipeline exceeding its given service life. Herein, the predicted service life is defined as the time at which the probability of exceedance is equal to 10%, which was selected based on engineering judgement. The presented methodology has been done to a sample of 16 RC pipes located in Houston, Texas, USA. Pipes are in different situation; some of these pipes are slightly deteriorated and have expected service life greater than 150 years; while others are severely eroded, with a predicted service life of 20 years or less.

Keywords

Reinforced concrete pipes, Corrosion

Disciplines

Civil and Environmental Engineering | Civil Engineering | Engineering

Comments

Degree granted by The University of Texas at Arlington

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