<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-6835</journal-id>
<journal-title><![CDATA[Revista ALCONPAT]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. ALCONPAT]]></abbrev-journal-title>
<issn>2007-6835</issn>
<publisher>
<publisher-name><![CDATA[Asociación Latinoamericana de Control de Calidad, Patología y Recuperación de la Construcción A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-68352017000100006</article-id>
<article-id pub-id-type="doi">10.21041/ra.v7i1.174</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Envejecimiento de estructuras de concreto antiguas y modernas - Observaciones e investigaciones]]></article-title>
<article-title xml:lang="en"><![CDATA[Ageing of old and modern concrete structures - Observations and research]]></article-title>
<article-title xml:lang="pt"><![CDATA[Envelhecimento de estruturas de concreto antigas e modernas - Observações e pesquisas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Breugel]]></surname>
<given-names><![CDATA[K. van]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beek]]></surname>
<given-names><![CDATA[T. A. van]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Delft University of Technology Faculty of Civil Engineering and Geosciences Section of Materials and Environment]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Netherlands</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>7</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-68352017000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-68352017000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-68352017000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El envejecimiento es una característica inherente de la naturaleza. Sin embargo, parece ser un tema bastante nuevo en la ciencia y la ingeniería. La principal razón para aumentar la atención por el envejecimiento como tema es la creciente conciencia de que, en particular en los países industrializados, el envejecimiento de nuestros activos es una carga financiera para la sociedad y afecta la sostenibilidad global de nuestro planeta. En esta contribución se abordan la urgencia y los desafíos del envejecimiento de las estructuras de concreto. La complejidad de los problemas de envejecimiento se ilustra examinando con más detalle la evolución del diseño de la mezcla de concreto y sus consecuencias para el rendimiento a largo plazo de las estructuras de concreto. Se hace hincapié en el envejecimiento de las infraestructuras de concreto y en la justificación de la investigación sobre fenómenos de envejecimiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Ageing is an inherent feature of nature. Yet it seems to be a rather new topic in both science and engineering. The main reason for increasing attention for ageing as a topic is the growing awareness that, particularly in industrialized countries, ageing of our assets is a financial burden for the society and affects the overall sustainability of our planet. In this contribution, the urgency and challenges of ageing of concrete structures are addressed. The complexity of ageing problems will be illustrated by looking in more detail to the evolution in concrete mix design and the consequences thereof for the long-term performance of concrete structures. Emphasis will be on ageing of concrete infrastructure and justification of research on ageing phenomena.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO Envelhecimento é uma característica inerente da natureza. No entanto, parece ser um tópico bastante novo tanto na ciência quanto na engenharia. A principal razão para aumentar a atenção para o envelhecimento como tema é a consciência crescente de que, particularmente nos países industrializados, o envelhecimento de nossos bens é um fardo financeiro para a sociedade e afeta a sustentabilidade global do nosso planeta. Nesta contribuição, são abordados a urgência e os desafios do envelhecimento das estruturas de concreto. A complexidade dos problemas de envelhecimento será ilustrada por uma análise mais detalhada da evolução da concepção da mistura de concreto e suas consequências para o desempenho em longo prazo das estruturas de concreto. A ênfase será no envelhecimento da infraestrutura de concreto e na justificativa da investigação sobre fenômenos de envelhecimento.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[infraestructura]]></kwd>
<kwd lng="es"><![CDATA[sostenibilidad]]></kwd>
<kwd lng="es"><![CDATA[envejecimiento]]></kwd>
<kwd lng="es"><![CDATA[diseño de mezcla]]></kwd>
<kwd lng="es"><![CDATA[contracción autógena]]></kwd>
<kwd lng="es"><![CDATA[códigos]]></kwd>
<kwd lng="en"><![CDATA[infrastructure]]></kwd>
<kwd lng="en"><![CDATA[sustainability]]></kwd>
<kwd lng="en"><![CDATA[ageing]]></kwd>
<kwd lng="en"><![CDATA[mix design]]></kwd>
<kwd lng="en"><![CDATA[autogenous shrinkage]]></kwd>
<kwd lng="en"><![CDATA[codes]]></kwd>
<kwd lng="pt"><![CDATA[infraestrutura]]></kwd>
<kwd lng="pt"><![CDATA[sustentabilidade]]></kwd>
<kwd lng="pt"><![CDATA[envelhecimento]]></kwd>
<kwd lng="pt"><![CDATA[estudo de dosagem]]></kwd>
<kwd lng="pt"><![CDATA[retração autógena]]></kwd>
<kwd lng="pt"><![CDATA[normas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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