<?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>0121-1129</journal-id>
<journal-title><![CDATA[Revista Facultad de Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. ing.]]></abbrev-journal-title>
<issn>0121-1129</issn>
<publisher>
<publisher-name><![CDATA[Universidad Pedagógica y Tecnológica de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-11292019000100044</article-id>
<article-id pub-id-type="doi">10.19053/01211129.v28.n50.2019.8790</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Strength benefit of sawdust/wood ash amendment in cement stabilization of an expansive soil]]></article-title>
<article-title xml:lang="es"><![CDATA[Beneficio de la resistencia de la enmienda al aserrín/ceniza de madera en la estabilización de cemento de un suelo expansivo]]></article-title>
<article-title xml:lang="pt"><![CDATA[Benefício da resistência da emenda ao serragem/cinzas de madeira na estabilização de cimento de um solo expansivo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[James]]></surname>
<given-names><![CDATA[Jijo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,College of Engineering  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>India</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<volume>28</volume>
<numero>50</numero>
<fpage>44</fpage>
<lpage>61</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-11292019000100044&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-11292019000100044&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-11292019000100044&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  The investigation evaluated the strength benefits obtained by amending cement stabilization of an expansive soil by using saw dust ash (SDA), a waste generated in wood milling industries due to burning. The experimental program involved the preparation of cylindrical specimens of size 38 mm x 76mm for evaluating the unconfined compression strength (UCS) of the cement stabilized and amended samples cured for varying periods of 2 hours, 7, 14 and 28 days. Two cement contents of 2% and 6% by weight of soil were adopted to stabilize the soil. The SDA amended cement stabilized samples adopted SDA contents of 5%, 10% and 20% by weight of soil. Strength gain trends for the amended samples were also fitted based on the results of the UCS tests. In order to analyse benefits in pavement design and thickness reduction, the UCS values were used to predict the CBR value of the specimens based on which the reduction in pavement thickness was calculated for different traffic densities. The investigation revealed that 5% SDA amendment of cement stabilization can result in up to 26% increase in early strength and 20% increase in delayed strength. Based on the predicted CBR values, pavement thickness can be reduced up to 8.3%.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  La investigación evaluó los beneficios de resistencia obtenidos al modificar la estabilización del cemento de un suelo expansivo mediante el uso de cenizas de polvo de sierra (SDA), un residuo generado en las industrias de molienda de madera debido a la quema. El programa experimental consistió en la preparación de muestras cilíndricas de tamaño 38 mm x 76 mm para evaluar la resistencia a la compresión no confinada (UCS) del cemento estabilizado y las muestras modificadas curadas por períodos variables de 2 horas, 7, 14 y 28 días. Se adoptaron dos contenidos de cemento de 2% y 6% en peso de suelo para estabilizar el suelo. Las muestras estabilizadas de cemento modificadas por SDA adoptaron contenidos de SDA del 5%, 10% y 20% en peso del suelo. Las tendencias de aumento de la fuerza para las muestras modificadas también se ajustaron en función de los resultados de las pruebas de UCS. Con el fin de analizar los beneficios en el diseño del pavimento y la reducción del espesor, los valores de UCS se usaron para predecir el valor CBR de los especímenes en base a los cuales se calculó la reducción del espesor del pavimento para diferentes densidades de tráfico. La investigación reveló que la enmienda 5% SDA de la estabilización del cemento puede dar como resultado un aumento de hasta el 26% en la resistencia temprana y un aumento del 20% en la resistencia retardada. Según los valores de CBR previstos, el grosor del pavimento se puede reducir hasta el 8.3%.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  A pesquisa avaliou os benefícios de resistência obtidos ao modificar a estabilização do cimento de um solo expansivo mediante o uso de cinzas de pó de serra (SDA), um resíduo gerado nas indústrias de moagem de madeira devido à queima. O programa experimental consistiu na preparação de amostras cilíndricas de tamanho 38 mm x 76 mm para avaliar a resistência à compressão não confinada (UCS) do cimento estabilizado e as amostras modificadas curadas por períodos variáveis de 2 horas, 7, 14 e 28 dias. Adotaram-se dois conteúdos de cimento de 2% e 6% em peso de solo para estabilizar o solo. As amostras estabilizadas de cimento modificadas por SDA adotaram conteúdos de SDA de 5%, 10% e 20% em peso do solo. As tendências de aumento da força para as amostras modificadas também se ajustaram em função dos resultados das provas de UCS. Com o fim de analisar os benefícios no desenho do pavimento e a redução da espessura, os valores de UCS foram usados para predizer o valor CBR dos espécimes em base aos quais se calculou a redução da espessura do pavimento para diferentes densidades de tráfego. A pesquisa revelou que a emenda 5% SDA da estabilização do cimento pode dar como resultado um aumento de até 26% na resistência inicial e um aumento de 20% na resistência tardia. Segundo os valores de CBR previstos, a grossura do pavimento pode ser reduzida até 8.3%.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[ash]]></kwd>
<kwd lng="en"><![CDATA[roads]]></kwd>
<kwd lng="en"><![CDATA[soil]]></kwd>
<kwd lng="en"><![CDATA[strength]]></kwd>
<kwd lng="en"><![CDATA[waste management]]></kwd>
<kwd lng="en"><![CDATA[waste material]]></kwd>
<kwd lng="es"><![CDATA[caminos]]></kwd>
<kwd lng="es"><![CDATA[ceniza]]></kwd>
<kwd lng="es"><![CDATA[material de desecho]]></kwd>
<kwd lng="es"><![CDATA[resistencia]]></kwd>
<kwd lng="es"><![CDATA[suelo]]></kwd>
<kwd lng="pt"><![CDATA[caminhos]]></kwd>
<kwd lng="pt"><![CDATA[cinzas]]></kwd>
<kwd lng="pt"><![CDATA[material residual]]></kwd>
<kwd lng="pt"><![CDATA[resistência]]></kwd>
<kwd lng="pt"><![CDATA[solo]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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<collab>Indian Roads Congress</collab>
<source><![CDATA[IRC 37: Guidelines for the design of flexible pavements]]></source>
<year>2012</year>
<page-range>1-104</page-range><publisher-loc><![CDATA[New Delhi, India ]]></publisher-loc>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
