<?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>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432021000300008</article-id>
<article-id pub-id-type="doi">10.22201/fi.25940732e.2021.22.3.024</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Zeolita natural proveniente de Puebla como tratamiento de suelos de la región de Querétaro en vías terrestres: Efectos en su comportamiento plástico]]></article-title>
<article-title xml:lang="en"><![CDATA[Natural zeolite from Puebla as a soil treatment of Querétaro region in roadways: Effects on its plastic behavior]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Francisco]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Lara]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Zaragoza]]></surname>
<given-names><![CDATA[Juan Bosco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Horta-Rangel]]></surname>
<given-names><![CDATA[Jaime Moisés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ingeniería División de Investigación y Posgrado]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ingeniería División de Investigación y Posgrado]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ingeniería División de Investigación y Posgrado]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ingeniería División de Investigación y Posgrado]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>22</volume>
<numero>3</numero>
<fpage>0</fpage>
<lpage>0</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432021000300008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432021000300008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432021000300008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Las puzolanas naturales tienen fama de emplearse como materiales puzolánicos de origen natural desde hace mucho tiempo, y es uno de los compuestos principales en la fabricación de concretos de alta resistencia. Como material de construcción, su uso ha sido explorado en la estabilización de suelos, haciendo necesaria la adición de cal a la mezcla para llevar a cabo la activación puzolánica y que la formación de cristales cementantes se lleve a cabo. Sin embargo, factores como pH del suelo, intercambio catiónico, humedad natural y mineralogía del suelo afectan en gran medida la cantidad de cal libre con la que puede combinarse la zeolita y realizar su actividad. Como consecuencia, para la estabilización de algunos suelos es necesario utilizar productos químicos más complejos cuya obtención implica diversos problemas ambientales y económicos. Por ello, el siguiente trabajo tiene como propósito la evaluación de diferentes cantidades de zeolita en la estabilización de un suelo expansivo utilizando cal como activador puzolánico, evaluando las propiedades índices del suelo estabilizado y la relación de los porcentajes implicados. Los resultados de las pruebas realizadas en la muestra de suelo arcilloso expansivo (CH) indican que la dosificación óptima de cal-zeolita es de 10-6 % respectivamente, obteniendo valores de: Límite Líquido (LL)=55.25, Límite Plástico (LP) =46.1, Límite de contracción (LC)=31.86; con un promedio de disminución del Índice Plástico (IP) de 33 % respecto a los límites del suelo natural. En virtud de los resultados, se concluye que el uso de cal y zeolita natural resulta favorable para la estabilización de arcillas en la región de Querétaro.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Natural pozzolans are well-known for being used as natural pozzolanic material for a long time, being one of the main components in the manufacture of high-resistence concrete. As a construction material, its use has been investigated by many researchers in soil stabilization, requiring the addition of lime and water to start the pozzolanic activity and subsequently, the cementitious crystal formation. However, factors such as soil pH, cation exchange, particle size, natural moisture and soil mineralogy are points that affect the amount of free lime that can be combined with zeolite can be combined and perform ist activity. As a consequence, the stabilization of some soils requires the use of more complex chemical products, whose obtention involves several enviromental and economic problems. Therefore, this paper aims to evaluate the different amounts of zeolite in the stabilization of an expansive soil (CH) using lime as a pozzolanic activator, evaluating the index properties of the stabilized soil and the relationship of the percentages of the involved materials. The results indicate that the optimal dosage of lime-zeolite is 10-6 % respectively, obtaining a Liquid Limit (LL) = 55.25 %, Plastic Limit (PL)= 46.1 % and Shrinkage Limit (SL)= 31.86 %, with an average decrease of Plastic Index(PI) of 33 % compared with the values of the natural soil. Based on the results obtained, it can be concluded that the use of lime and natural zeolite is favorable in the stabilization of clays from the Queretaro region.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Zeolita natural]]></kwd>
<kwd lng="es"><![CDATA[clinoptilolita de Puebla]]></kwd>
<kwd lng="es"><![CDATA[límites de Atterberg]]></kwd>
<kwd lng="es"><![CDATA[mejoramiento de suelos Querétaro]]></kwd>
<kwd lng="es"><![CDATA[cal]]></kwd>
<kwd lng="en"><![CDATA[Natural zeolite]]></kwd>
<kwd lng="en"><![CDATA[clinoptilolite from Puebla]]></kwd>
<kwd lng="en"><![CDATA[Atterberg limits]]></kwd>
<kwd lng="en"><![CDATA[soil stabilization]]></kwd>
<kwd lng="en"><![CDATA[Queretaro region]]></kwd>
<kwd lng="en"><![CDATA[lime]]></kwd>
</kwd-group>
</article-meta>
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