<?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>2215-3705</journal-id>
<journal-title><![CDATA[Infraestructura Vial]]></journal-title>
<abbrev-journal-title><![CDATA[Infraestructura Vial]]></abbrev-journal-title>
<issn>2215-3705</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica, Laboratorio Nacional de Materiales y Modelos Estructurales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-37052016000100020</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Compaction and mechanical properties of soils compacted in the gyratory compactor]]></article-title>
<article-title xml:lang="es"><![CDATA[Propiedades de compactación y mecánicas de suelos compactados en el compactador giratorio]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez García]]></surname>
<given-names><![CDATA[Natalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[GarnicaAnguas]]></surname>
<given-names><![CDATA[Paul]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fredlund]]></surname>
<given-names><![CDATA[Delwyn]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes Rodríguez]]></surname>
<given-names><![CDATA[Miguel Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[GarcíaCruz]]></surname>
<given-names><![CDATA[Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Luis]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Mexican Transportation Institute  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Mexican Transportation Institute  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Golder Associates  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>CA</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Benemerita de Puebla  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autonoma de Chihuahua  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,InstitutoTecnologico de Oaxaca  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2016</year>
</pub-date>
<volume>18</volume>
<numero>31</numero>
<fpage>20</fpage>
<lpage>29</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-37052016000100020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-37052016000100020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-37052016000100020&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[AbstractThe authors present a series of compaction curves obtained in fine-grained soils through use of a gyratory compactor. The effect on compaction curves of variables such as vertical pressure, angle of gyration, and speed of gyration is shown. The curves obtained with the gyratory compactor were compared with those obtained using traditional methods of compaction (Proctor standard and modified compaction). It was observed that the standard compaction curve can be obtained with 200 gyrations, 1.25 degrees of angle of gyration, and a vertical pressure of 200 kPa. On the other hand, with the combination of variables studied in this research, modified compaction curves could not be reached. Tests were also performed to measure resilient modulus and unconfined compression strength on specimens prepared at optimum compaction conditions, 2% below the optimum and 2% above the optimum (for Proctor standard tests) using two methodsofcompaction.The results indicate that unconfined compression strengths and resilient modulus are related to the compaction method when samples are compacted at water content below optimum.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[ResumenEn este artículo los autores presentan resultados de curvas de compactación de suelos finos que fueron determinadas con un compactador giratorio. Se muestra cómo varía la curva de compactación dependiendo de las variables controladas en el equipo giratorio durante la compactación (presión vertical, ángulo de giro y velocidad a la que se aplican los giros). Se llevaron a cabo comparaciones entre las curvas de compactación obtenidas por métodos tradicionales y las obtenidas con el compactador giratorio, encontrándose que la curva de compactación Proctor estándar se puede obtener si el suelo colocado en el equipo giratorio se densifica con 200 giros, con 1.25 grados de inclinación del molde y si se aplica una presión vertical de 200 kPa.Con respecto a la curva Proctor modificada, ésta no se logró obtener para ningún suelo con la combinación de variables estudiadas, al parecer se requiere de una presión vertical mayor a 800 kPa para alcanzar los pesos volumétricos secos de dicha curva. En la investigación también se estudió el efecto del tipo de compactación (dinámica y por medio del compactador giratorio) en el módulo de resiliencia y la resistencia en compresión simple de muestras compactadas en el óptimo, 2% debajo del óptimo y 2% por arriba del óptimo. Los resultados indicaron que ambos parámetros dependen del tipo de compactación cuando las muestras compactadas tienen un contenido de agua inferior al óptimo.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[características de compactación]]></kwd>
<kwd lng="es"><![CDATA[diseño de pavimento]]></kwd>
<kwd lng="es"><![CDATA[compactador giratorio]]></kwd>
<kwd lng="es"><![CDATA[módulo de resiliencia]]></kwd>
<kwd lng="es"><![CDATA[compresión no confinada]]></kwd>
<kwd lng="en"><![CDATA[compaction characteristics]]></kwd>
<kwd lng="en"><![CDATA[pavement design]]></kwd>
<kwd lng="en"><![CDATA[gyratory compactor]]></kwd>
<kwd lng="en"><![CDATA[resilient modulus]]></kwd>
<kwd lng="en"><![CDATA[unconfined compression]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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