<?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>2395-8782</journal-id>
<journal-title><![CDATA[Ciencia ergo sum]]></journal-title>
<abbrev-journal-title><![CDATA[Cienc. ergo-sum]]></abbrev-journal-title>
<issn>2395-8782</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma del Estado de México, Instituto Literario]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2395-87822022000100153</article-id>
<article-id pub-id-type="doi">10.30878/ces.v29n1a9</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Influencia de la arena en la resistencia mecánica del mortero empleando diferentes marcas de cemento]]></article-title>
<article-title xml:lang="en"><![CDATA[Influence of the sand on the mechanical properties of mortars made with different brands of cement]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muciño-Vélez]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guillén Guillén]]></surname>
<given-names><![CDATA[César Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tahuiton-Mora]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco-Mendoza]]></surname>
<given-names><![CDATA[Eligio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>29</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2395-87822022000100153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2395-87822022000100153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2395-87822022000100153&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se evalúa el comportamiento mecánico de pastas de cemento empleando Cemento Portland Tipo II 30R de cinco marcas con el objetivo de identificar la relación óptima de los cementos con diferentes tipos de arena para elaborar morteros. Se conformaron cinco series de pastas y morteros con cada marca de cemento variando el tipo de arena por serie. La resistencia de las pastas de cemento es diferente en cada marca. Una misma marca de cemento tendrá un comportamiento distinto en función de la arena que se utilice. La arena influye en la resistencia a compresión. Para mejorar el desempeño mecánico del mortero, se analizan los materiales componentes. Un diseño de mezcla específico optimiza el mortero en la construcción.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The mechanical behavior of cement pastes was evaluated using Portland Cement Type II 30R from five brands, to identify the optimal relationship of the cements with different types of sand to make mortars. Five series of pastes and mortars were made with each brand of cement, varying the type of sand per series in the mortars. The resistance of cement pastes is different for each brand. The same brand of cement will have a different behavior depending on the sand used. Sand influences compressive strength. To improve the mechanical performance of the mortar, the component materials are analyzed. A specific mix design optimizes the mortar in construction.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[granulometría]]></kwd>
<kwd lng="es"><![CDATA[pruebas mecánicas]]></kwd>
<kwd lng="es"><![CDATA[compresión]]></kwd>
<kwd lng="es"><![CDATA[resistencia máxima]]></kwd>
<kwd lng="en"><![CDATA[granulometry]]></kwd>
<kwd lng="en"><![CDATA[mechanical tests]]></kwd>
<kwd lng="en"><![CDATA[compression]]></kwd>
<kwd lng="en"><![CDATA[maximum resistance]]></kwd>
</kwd-group>
</article-meta>
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