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Service life design and modelling of concrete structures – background, developments, and implementation
M. G. Alexander

Abstract: The paper presents an international overview of current knowledge and progress in service life design and modelling of concrete structures. It explores why service life modelling is needed, and indicates that modern demands for longevity, durability, and sust

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BRIEF HISTORICAL NOTES
Carmen Andrade

Abstract: Anniversaries are a good excuse to make some summaries of historical events. Very briefly, some advances made from the initial research in the specialty of reinforcement corrosion which started in the 60’s are summarized. The use of electrochemical techniques

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Challenges and opportunities for assessing transport properties of high-performance concrete

Abstract: In this paper, a review of techniques is given so that both, the challenges and opportunities for assessing transport properties of high-performance concrete, are highlighted. A knowledge of performance of structural concrete is required for design and compli

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Design and evaluation of service life through concrete electrical resistivity
C. Andrade

Abstract: This paper describes the use of concrete electrical resistivity as durability performance parameter and the complementary information that resistivity can provide like: setting period, mechanical strength and degree of curing. Also, it is explained how to des

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A holistic conceptual approach to concrete service life: a split into different time-stages
P. Castro-Borges P. Helene

Abstract: The goal of this paper is to analyze and discuss a conceptual approach that considers the holistic character of concrete service life but splits it into seven time-stages that can be compared, for understanding purposes, with those of a human being. The exist

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Apparent diffusion coefficient of oxygen and corrosion control of reinforcement rebar coated with primers
E. Pazini Figueiredo C. Andrade

Abstract: The present work evaluates the influence of different primers applied in the reinforcement steel on the apparent diffusion coefficient of oxygen (Dap (O2)) and on the corrosion intensity (Icorr), comparing the results with a reference cimentitious mortar. Oxy

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Limitations of sorptivity and water permeability for the estimation of the chloride penetration rate in concrete regarding the accomplishment of prescriptive design for durability in the marine environment
Y. A. Villagrán Zaccardi

Abstract: This paper presents an analysis of experimental data from conventional concrete regarding sorptivity and penetrability under pressure comparing these parameters to chloride diffusion rate determined in the laboratory and in actual marine environment. Prescrip

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Cracks width-corrosion rate correlation on the durability of reinforced concrete in a very high aggressiveness tropical marine environment

Abstract: The aim of this investigation was to evaluate the correlation between crack width and apparent corrosion rate in reinforced concrete specimens exposed for more than six years to a tropical marine environment, at the natural test site La Voz, Venezuela. Six sp

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Concrete strength control: ABNT, ACI and EN comparative procedures. Site study case
R. Boni C. Britez P. Helene

Abstract: This paper presents an approach regarding the control of compressive strength of concrete performed by Brazilian standard, additionally was proceeded with an analysis, from the same data, performed by ACI 318-14 and EN 206. In Brazil, the control of the axial

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Load rating assessment of a corroded pier structure in the Gulf of Mexico

Abstract: This work assesses the structural integrity of a pier located in the Gulf of Mexico through a live-load testing analysis of a corroded structure that withstands heavy loads. Procedures included instrumentation for load application of four different loads (50,

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