<?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>S2007-68352017000200119</article-id>
<article-id pub-id-type="doi">10.21041/ra.v7i2.142</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reacción Sulfática Interna (RSI) como degradación de la matriz cementante: comportamiento de mezclas dosificadas con diferentes contenidos de contaminación por sulfato]]></article-title>
<article-title xml:lang="en"><![CDATA[Internal Sulphate Reaction (ISR) as degradation of the cement matrix: behavior of pastes dosed with different amounts of contamination by sulfate]]></article-title>
<article-title xml:lang="pt"><![CDATA[Reação Sulfática Interna (RSI) como degradação de matriz cimentícia: comportamento de pastas dosadas com diferentes teores de contaminação por sulfato]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Capraro]]></surname>
<given-names><![CDATA[A. P. Brandao]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medeiros]]></surname>
<given-names><![CDATA[M. H. F. de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[H. Filho]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bragança]]></surname>
<given-names><![CDATA[M. O. G. P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Portella]]></surname>
<given-names><![CDATA[K. F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[I. C. de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Paraná  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Federal do Oeste da Bahia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Institutos Lactec  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Companhia Paranaense de Energia Elétrica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>7</volume>
<numero>2</numero>
<fpage>119</fpage>
<lpage>134</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-68352017000200119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-68352017000200119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-68352017000200119&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El presente trabajo, desarrollado en el marco del Programa de P&amp;D ANEEL, proyecto 6491-0301/2013, tiene por objetivo evaluar diferentes contenidos de contaminación por sulfatos que interfieren en las características microestructurales y mecánicas de mezclas, cuando estas son sometidas a dos diferentes condiciones de exposición: ciclo de mojado y secado y tanque aireado. Para el análisis del mecanismo deteriorante, se evaluaron cuatro series de mezclas, una referencia y tres contaminadas por azufre, por medio de ensayos en estado fresco (consistencia y peso específico) y endurecido (resistencia a la compresión axial y la tracción en la flexión, variación dimensional y DRX). Al final del período estudiado (84 días) se notó que los ensayos ayudaron en el entendimiento del mecanismo, pero que esta unión estaría en una etapa inicial.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The present work, developed in the scope of the R&amp;D Program of ANEEL, project 6491-0301/2013, aims to evaluate how different levels of sulfide contamination interfere with the microstructural and mechanical characteristics of the cement pastes when they are submitted to two exposure conditions: wetting and drying cycle and aerated tank. For an analysis of the deteriorating mechanism, four series of cement pastes, one reference and three contaminated by sulfur, were evaluated by non-fresh tests (consistency and specific mass) and resistance (axial compression and flexural tensile strength, dimensional variation and XRD). At the end of the study period (84 days) it was noted that the auxiliary assays did understand the mechanism but that it would still be at an early stage.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: O presente trabalho, desenvolvido no âmbito do Programa de P&amp;D ANEEL, projeto 6491-0301/2013, tem por objetivo avaliar como diferentes teores de contaminação por sulfetos interferem nas características microestruturais e mecânicas de pastas, quando estas são submetidas a duas diferentes condições de exposição: ciclo de molhagem e secagem e tanque aerado. Para a análise do mecanismo deteriorante foram avaliadas quatro séries de pastas, uma referência e três contaminadas por enxofre, por meio de ensaios no estado fresco (consistência e massa específica) e endurecido (resistência à compressão axial e a tração na flexão, variação dimensional e DRX). Ao final do período estudado (84 dias) notou-se que os ensaios auxiliaram no entendimento do mecanismo, mas que este ainda estaria em um estágio inicial.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación por sulfuros]]></kwd>
<kwd lng="es"><![CDATA[mecanismo de deterioro]]></kwd>
<kwd lng="es"><![CDATA[exposición ambiental]]></kwd>
<kwd lng="es"><![CDATA[estado inicial]]></kwd>
<kwd lng="en"><![CDATA[contamination by sulfides]]></kwd>
<kwd lng="en"><![CDATA[deteriorating mechanism]]></kwd>
<kwd lng="en"><![CDATA[environmental exposure]]></kwd>
<kwd lng="en"><![CDATA[initial stage]]></kwd>
<kwd lng="pt"><![CDATA[contaminação por sulfetos]]></kwd>
<kwd lng="pt"><![CDATA[mecanismo deteriorante]]></kwd>
<kwd lng="pt"><![CDATA[exposição ambiental]]></kwd>
<kwd lng="pt"><![CDATA[estágio inicial]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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