<?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>2007-3011</journal-id>
<journal-title><![CDATA[Concreto y cemento. Investigación y desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Concr. cem. investig. desarro]]></abbrev-journal-title>
<issn>2007-3011</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano del Cemento y del Concreto A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-30112016000200035</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Resistencia a tensión del concreto elaborado con agregado calizo de alta absorción]]></article-title>
<article-title xml:lang="en"><![CDATA[Tensile strength of concrete with high absorption limestone aggregate]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[Eric I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís-Carcaño]]></surname>
<given-names><![CDATA[Rómel G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varela-Rivera]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez López]]></surname>
<given-names><![CDATA[Marco A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Yucatán Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Yucatán Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>8</volume>
<numero>1</numero>
<fpage>35</fpage>
<lpage>45</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-30112016000200035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-30112016000200035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-30112016000200035&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Antecedentes:  La resistencia a tensión del concreto es una propiedad importante para el diseño de las estructuras; en elementos de concreto reforzado se puede producir el agrietamiento bajo diversas condiciones de carga o por medio de otros efectos, como son las condiciones ambientales críticas. De lo anterior se desprende la necesidad de contar con ecuaciones de predicción de resistencia a tensión, a partir de la resistencia a compresión axial del concreto, que es la propiedad que más se ha estudiado en este material.  Métodos:  Se ensayaron probetas cilíndricas y prismáticas fabricadas con agregados calizos triturados de alta absorción, utilizando tres relaciones agua/cemento. Para cada tipo de concreto se midieron sus resistencias a compresión y a tensión; ésta última obtuvo tanto por compresión, como por tensión.  Resultados:  Con los datos medidos se calcularon ecuaciones por el método de mínimos cuadrados que relacionaron las dos formas de resistencia a la tensión con la resistencia a la compresión. Las ecuaciones obtenidas se compararon con las especificadas en dos reglamentos vigentes, así con como con otras ecuaciones encontradas en la literatura.  Conclusiones:  Con base en las comparaciones anteriores, se encontró que las ecuaciones obtenidas fueron similares a las especificadas en el Reglamento para Concreto Estructural del Instituto Americano del Concreto, así como a las que han propuesto algunos otros autores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background:  The tensile strength of concrete is an important mechanical property used in the design of structures. Cracking of reinforced concrete elements can be observed under different loading conditions or under other effects, such as critical environmental conditions. Based on the above, there is a need to develop design equations for the tensile strength of concrete. Equation can be a function of the axial compressive strength of concrete, which is the most studied property for this material.  Methods:  Concrete cylinders and beam specimens were tested in this study. Concrete specimens were fabricated using high absorption limestone aggregates. Three water/cement ratios were considered. For each type of concrete, axial compressive strength and tensile strength were measured. For this last case, both flexural tensile and compressive tensile strengths were determined.  Results:  Based on the experimental results, design equations were developed for the two types of tensile strength of concrete. Equations were developed as a function of the axial compressive strength of concrete using the least square method. Proposed equations were compared with those prescribed in two current design codes and with those found in the literature.  Conclusions:  Based on the comparisons presented before, it was found that proposed equations for the tensile strength of concrete were similar to those prescribed in the Building Code Requirements for Structural Concrete of the American Concrete Institute, and to those proposed for some other authors.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO  Antecedentes: A resistência à tensão do concreto é uma importante propriedade para o designer das estruturas; em elementos de concreto armado pode ocorrer rachaduras sob diversas condições de carga ou por meio de outros efeitos, como as condições ambientais críticas. De acordo com o anterior, deriva-se a necessidade de contar com equações de predição de resistência à tensão, a partir da resistência à compressão axial do concreto, que é a propriedade que tem sido mais estudada neste material.  Métodos: Foram feitos ensaios em provetas cilíndricas e prismáticas fabricadas com agregados calcários triturados de alta absorção, utilizando três relações de água/cimento. Para cada tipo de concreto foram medidas a sua resistência, a compressão e a tensão; este último obteve tanto por compressão, como por tensão.  Resultados:  Com os dados medidos foram calculadas equações pelo método de mínimos quadrados relacionados com as duas formas de resistência à tensão com a resistência à compressão. As equações obtidas foram comparadas com as especificadas em dois regulamentos vigentes, bem como com outras equações encontradas na literatura.  Conclusões: Com base nas comparações acima, verificou-se que as equações obtidas foram semelhantes com as es pecificadas no Regulamento para Concreto Estrutural do Instituto Americano do Concreto, bem como com as que têm propostos por alguns autores.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[concreto]]></kwd>
<kwd lng="es"><![CDATA[tensión]]></kwd>
<kwd lng="es"><![CDATA[compresión]]></kwd>
<kwd lng="es"><![CDATA[agregados]]></kwd>
<kwd lng="es"><![CDATA[caliza]]></kwd>
<kwd lng="en"><![CDATA[Concrete]]></kwd>
<kwd lng="en"><![CDATA[tension]]></kwd>
<kwd lng="en"><![CDATA[compression]]></kwd>
<kwd lng="en"><![CDATA[aggregates]]></kwd>
<kwd lng="en"><![CDATA[lime]]></kwd>
<kwd lng="pt"><![CDATA[concreto]]></kwd>
<kwd lng="pt"><![CDATA[tensão]]></kwd>
<kwd lng="pt"><![CDATA[compressão]]></kwd>
<kwd lng="pt"><![CDATA[agregados]]></kwd>
<kwd lng="pt"><![CDATA[calcário]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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