<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822019000200068</article-id>
<article-id pub-id-type="doi">10.18845/tm.v32i2.4350</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio experimental de la carbonatación del concreto]]></article-title>
<article-title xml:lang="en"><![CDATA[Experimental study of the concrete carbonation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chinè-Polito]]></surname>
<given-names><![CDATA[Bruno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuevas-Kauffmann]]></surname>
<given-names><![CDATA[Rommel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Salas]]></surname>
<given-names><![CDATA[Ronald]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Quesada]]></surname>
<given-names><![CDATA[Giannina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ciencia e Ingeniería de Materiales ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Construcción ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ciencia e Ingeniería de Materiales ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Construcción ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>68</fpage>
<lpage>81</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822019000200068&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822019000200068&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822019000200068&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En el sector civil de la construcción, el concreto y el refuerzo metálico representan aun los materiales de mayor importancia, aunque sean muy vulnerables por los agentes atmosféricos, como en el caso de su degradación por corrosión. En Costa Rica, debido a la falta de métodos de monitoreo de las estructuras existentes y a una deficiente política preventiva en términos de mantenimiento, se hace urgente el desarrollo de modelos predictivos que permitan intervenir a tiempo las estructuras antes de que se comprometa de alguna forma la integridad de los usuarios. En este artículo se presentan los resultados de una investigación sobre la carbonatación por causa del gas CO2, considerando el estudio experimental de la carbonatación del concreto sin la presencia del refuerzo metálico. Se usan métodos de carbonatación en cámara acelerada bajo condiciones muy controladas, ensayos de difracción de rayos X y químicos con el propósito de verificar el avance de la profundidad de carbonatación en el tiempo. Los resultados experimentales demuestran la efectividad del proceso en la cámara de carbonatación acelerada y brindan la variación de la resistencia a compresión de los especímenes de concreto, con el avance del frente de carbonatación en el tiempo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In the construction sector, the concrete and the steel bars represent still the key components, although they are very vulnerable by the atmospheric agents, as in the case of their degradation caused by corrosion. In Costa Rica, due to the absence of effective monitoring methods of civil structures and preventive maintenance actions, predictive model are required to avoid damages to the structure and protect the safety of the users. In this work, we present the results of a study for the carbonation due to the CO2 gas, considering the experimental study of the concrete carbonation without the reinforcing bar. We use an accelerated carbonation chamber under strictly controlled conditions, X ray diffraction and chemical analysis to verify the progress of the carbonation depth in time. The experimental results show the effectiveness of the accelerated carbonation process and give the compression strength of the concrete samples for the different carbonation depth measured in time.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Concreto]]></kwd>
<kwd lng="es"><![CDATA[carbonatación]]></kwd>
<kwd lng="es"><![CDATA[cámara de carbonatación acelerada]]></kwd>
<kwd lng="es"><![CDATA[técnicas experimentales]]></kwd>
<kwd lng="en"><![CDATA[Concrete]]></kwd>
<kwd lng="en"><![CDATA[carbonation]]></kwd>
<kwd lng="en"><![CDATA[accelerated carbonation chamber]]></kwd>
<kwd lng="en"><![CDATA[experimental techniques]]></kwd>
</kwd-group>
</article-meta>
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