نتایج جستجو برای: bridge deterioration

تعداد نتایج: 85096  

2007
Travis K. Hosteng

One of the goals that the Innovative Bridge Research and Construction (IRBC) program, sponsored by the Federal Highway Administration (FHWA), wishes to achieve through sponsored research projects is the concept of an economical, durable, short-span bridge that reduces construction time. Delaware County, Iowa took a step in that direction through the construction of a 64 ft. long bridge comprise...

Journal: :ce/papers 2023

Abstract The durability of reinforced concrete bridges is crucial for ensuring their long‐term functionality and safety. Among the various deterioration mechanisms, carbonation chlorides are most significant widespread problems affecting these structures. This paper aims to assess condition historical Colombian Bridge “Laureano Gómez”, which has been in service over 40 years. assessment involve...

2015
Lu Deng C. S. Cai

The dynamic effect of moving vehicles on bridges is generally treated as a dynamic load allowance (or dynamic impact factor) in many design codes. Due to the road surface deterioration of existing bridges, studies have shown that the calculated impact factors from field measurements could be higher than the values specified in design codes that mainly target at new bridge designs. This paper de...

Journal: :Journal of Bridge Engineering 2021

Maintaining the structural reliability of highway bridges under a budget constraint necessitates development accurate prediction models bridge deck deterioration to maximize service life while minimizing life-cycle costs. Traditionally, condition is assessed using ordinal discrete indices, referred as ratings (CRs), assigned based on an assessment visible signs deterioration. Nondestructive eva...

Journal: :IJITSA 2012
Khalid Aboura Bijan Samali

This paper introduces an information system for estimating lifetime characteristics of elements of bridges and predicting the future conditions of networks of bridges. The Information System for Bridge Networks Condition Monitoring and Prediction was developed for the Roads and Traffic Authority of the state of New South Wales, Australia. The conceptual departure from the standard bridge manage...

Journal: :Procedia structural integrity 2023

This work reports on some preliminary results obtained within the framework of a wide research project aimed to study influence corrosion in Reinforced Concrete (RC) piers overall seismic performances bridges. In this context, after statistical evaluation large database real structures, consistent set bridges and has been selected as sample representative typical bridge profiles, pier heights c...

Journal: :Cement & Concrete Composites 2022

This paper covers the expansion of new concrete containing recycled aggregates (RCA) produced from bridge barriers suffering different levels damage due to alkali-silica reaction (ASR). RCA sourced high-deterioration a higher than natural aggregate or low-deterioration concrete, although difference is not high. The lab-prepared cylinders with was that cores extracted old elements. standard acce...

2003
Milan J. Jolley M. J. Jolley

The corrosion of steel reinforcement in an aging highway infrastructure is a major problem currently facing the transportation engineering community, in particular bridge engineers. In the United States, maintenance and replacement costs are measured in billions of dollars. Further, the use of deicing salts has resulted in steady deterioration of bridge decks due to corrosion. These concerns ha...

Journal: :Journal of Japan Society of Civil Engineers, Ser. F4 (Construction and Management) 2017

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