<?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>S2007-68352022000100006</article-id>
<article-id pub-id-type="doi">10.21041/ra.v12i1.558</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Service life prediction for concrete structures based on carbonation front depth models]]></article-title>
<article-title xml:lang="pt"><![CDATA[Previsão da vida útil de estruturas de concreto com base em modelos para avanço da frente de carbonatação]]></article-title>
<article-title xml:lang="es"><![CDATA[Predicción de la vida útil de estructuras de hormigón a partir de modelos que estiman el avance del frente de carbonatación]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinto Costa]]></surname>
<given-names><![CDATA[Rayara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Simas Franchetto]]></surname>
<given-names><![CDATA[Alessandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Smolinski Gouveia]]></surname>
<given-names><![CDATA[Ana Júlia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ziegler]]></surname>
<given-names><![CDATA[Fabiana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Queiros Pessoa]]></surname>
<given-names><![CDATA[Kennedy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Regina Garcez]]></surname>
<given-names><![CDATA[Mônica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Federal University of Rio Grande do Sul  ]]></institution>
<addr-line><![CDATA[ Porto Alegre]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>12</volume>
<numero>1</numero>
<fpage>47</fpage>
<lpage>60</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-68352022000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-68352022000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-68352022000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper seeks to evaluate the variability in predicting the service life of concrete structures through four models that estimate the natural advance of the carbonation front. The results show that there is variability in the estimated carbonation front. The models by Possan (2010) and Ekolu (2018) show estimated values close to measured ones, while Ho and Lewis (1987) and Bob and Affana (1993) tend to underestimate and overestimate the natural carbonation front, respectively. Only concretes without added supplementary cementitious materials were considered, due to model limitations. Compressive strength, CO2 concentration and relative humidity have significant influence on the results and the variability depends on which parameters are considered in the models.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Este artigo busca avaliar a variabilidade na previsão da vida útil de estruturas de concreto através de quatro modelos que estimam o avanço natural da frente de carbonatação. Os resultados mostram que há variabilidade na frente de carbonatação estimada. Os modelos de Possan (2010) e Ekolu (2018) apresentam valores estimados próximos aos medidos, enquanto Ho e Lewis (1987) e Bob e Affana (1993) tendem, respectivamente, a subestimar e superestimar a frente natural de carbonatação. Somente concretos sem adição de materiais cimentícios suplementares foram considerados, por limitações dos modelos. A resistência à compressão, concentração de CO2 e umidade relativa do ar têm influência significativa nos resultados e a variabilidade depende de quais parâmetros são considerados nos modelos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este artículo evalúa la variabilidad en la previsión de la vida útil de estructuras de hormigón a través de cuatro modelos que estiman el avance natural del frente de carbonatación. Los resultados muestran que hay variabilidad en el frente de carbonatación estimado. Los modelos Possan (2010) y Ekolu (2018) presentan valores estimados cercanos a los medidos, mientras que Ho y Lewis (1987) y Bob y Affana (1993) subestiman y sobreestiman el frente de carbonatación natural. Sólo se consideraron los hormigones sin adición de materiales cementantes suplementarios, debido a las limitaciones del modelo. La resistencia a compresión, concentración de CO2 y humedad relativa tienen influencia significativa en los resultados y la variabilidad depende de los parámetros que se consideren en los modelos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[carbonatation]]></kwd>
<kwd lng="en"><![CDATA[service life prediction]]></kwd>
<kwd lng="en"><![CDATA[carbonatation depth]]></kwd>
<kwd lng="en"><![CDATA[concrete durability]]></kwd>
<kwd lng="pt"><![CDATA[carbonatação]]></kwd>
<kwd lng="pt"><![CDATA[previsão de vida útil]]></kwd>
<kwd lng="pt"><![CDATA[frente de carbonatação]]></kwd>
<kwd lng="pt"><![CDATA[durabilidade do concreto]]></kwd>
<kwd lng="es"><![CDATA[carbonatación]]></kwd>
<kwd lng="es"><![CDATA[predicción de vida útil]]></kwd>
<kwd lng="es"><![CDATA[profundidad de carbonatación]]></kwd>
<kwd lng="es"><![CDATA[durabilidad del hormigón]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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