<?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>2007-6835</journal-id>
<journal-title><![CDATA[Revista ALCONPAT]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. ALCONPAT]]></abbrev-journal-title>
<issn>2007-6835</issn>
<publisher>
<publisher-name><![CDATA[Asociación Latinoamericana de Control de Calidad, Patología y Recuperación de la Construcción A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-68352016000200084</article-id>
<article-id pub-id-type="doi">10.21041/ra.v6i2.131</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Analyzing the dispersion of carbon nanotubes solution for use in Portland cement concrete]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis de la dispersión de soluciones conteniendo nanotubos de carbono para su uso en concretos de cemento Portland]]></article-title>
<article-title xml:lang="pt"><![CDATA[Análise da dispersão de soluções contendo nanotubos de carbono para uso em concretos de cimento Portland]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marcondes]]></surname>
<given-names><![CDATA[C. G. N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medeiros]]></surname>
<given-names><![CDATA[M. H. F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Pontifical Catholic University of Paraná  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Federal University of Paraná Department of Civil Engineering ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<volume>6</volume>
<numero>2</numero>
<fpage>84</fpage>
<lpage>100</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-68352016000200084&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-68352016000200084&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-68352016000200084&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Carbon nanotubes (CNTs) are nanometric carbon structures with cylindrical formats. For use in concretes, one of the difficulties is in its dispersion, focus this work. It used a tool known as hierarchical analysis to investigate the efficiency of the dispersion of carbon nanotubes in concrete kneading water. Were studied 12 forms of dispersions in aqueous medium containing hum Miscellaneous Chemicals. Carbon nanotubes multi-walled in powder form and Processed already dispersed in water were used. The study showed that the hierarchical analysis tool might constitute an alternative to the election of the best choice among the available options, considering the factors of influence in a systemic way.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los nanotubos de carbono (NTC) son estructuras nanométricas de carbono en formas cilíndricas. Para su uso en hormigón, una de las dificultades es su dispersión, enfoque de este trabajo. Se utilizó una herramienta conocida como análisis jerárquico para investigar la eficiencia de dispersión de los NTC en el agua de la mezcla de hormigón. Fueron estudiados 12 maneras de dispersiones en medio acuoso que contiene diferentes productos químicos. Se usaron los nanotubos de carbono de pared múltiple en forma de polvo y los ya procesados, dispersos en agua. El estudio mostró que la herramienta de análisis jerárquico podría constituir una alternativa eficaz para la elección de una mejor dispersión, teniendo en cuenta los factores que influyen en forma sistémica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: Os nanotubos de carbono (NTC) são estruturas nanometricas de carbono com formatos cilindricos. Para uso em concretos, uma das dificuldades está na sua dispersão, foco deste trabalho. Foi usada uma ferramenta conhecida como análise hierárquica. Para investigar a eficiência da dispersão dos nanotubos de carbono na água de amassamento do concreto, foram estudadas 12 formas de dispersões em um meio aquoso contendo diversos produtos químicos. Foram utilizados os nanotubos de carbono de paredes múltiplas em forma de pó e os industrializados, já dispersos em água. O trabalho demonstrou que a ferramenta de análise hierárquica poderia se constituir em uma alternativa eficiente para a eleição da melhor dispersão, considerando os fatores de influência de forma sistêmica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[analytical hierarchy process]]></kwd>
<kwd lng="en"><![CDATA[concrete]]></kwd>
<kwd lng="en"><![CDATA[carbon nanotubes]]></kwd>
<kwd lng="es"><![CDATA[proceso de análisis jerárquico]]></kwd>
<kwd lng="es"><![CDATA[hormigón]]></kwd>
<kwd lng="es"><![CDATA[nanotubos de carbón]]></kwd>
<kwd lng="pt"><![CDATA[análise hierárquica]]></kwd>
<kwd lng="pt"><![CDATA[concreto]]></kwd>
<kwd lng="pt"><![CDATA[nanotubos de carbono]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="">
<collab>American Society for Testing and Materials</collab>
<article-title xml:lang=""><![CDATA[Standard Specification for Chemical Admixtures for Concrete. ASTM C494/C494M]]></article-title>
<source><![CDATA[Annual book of ASTM Standards]]></source>
<year>2013</year>
<publisher-loc><![CDATA[West Conshohocken ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="">
<collab>American Society for Testing and Materials</collab>
<article-title xml:lang=""><![CDATA[Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete. ASTM C1017/C1017M]]></article-title>
<source><![CDATA[Annual book of ASTM Standards]]></source>
<year>2007</year>
<publisher-loc><![CDATA[West Conshohocken ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="">
<collab>American Society for Testing and Materials</collab>
<article-title xml:lang=""><![CDATA[Standard practice for applying analytical hierarchy process (AHP) to multi attribute decision analysis of investments related to buildings and buildings systems. ASTM E 1765]]></article-title>
<source><![CDATA[Annual book of ASTM Standards]]></source>
<year>2011</year>
<publisher-loc><![CDATA[West Conshohocken ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="">
<collab>Associación Brasileira de Normas Técnicas</collab>
<source><![CDATA[Chemical additives for Portland cement concrete - Requirements]]></source>
<year>2011</year>
<publisher-loc><![CDATA[Rio de Janeiro ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Batiston]]></surname>
<given-names><![CDATA[E. R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Carbon Nanotubes incorporation in Portland cement matrices]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Florianópolis ]]></publisher-loc>
<publisher-name><![CDATA[Universidade Federal de Santa Catarina]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[H. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Correa]]></surname>
<given-names><![CDATA[P. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Construction of an AHP-based model to catch criteria weights in port-occupancy evaluation]]></article-title>
<source><![CDATA[International Journal of the Analytic Hierarchy Process]]></source>
<year>2010</year>
<volume>2</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>30-43</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[H. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Niterói]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Introduction to hierarchical analysis method: multi-criteria analysis in the decision aid]]></source>
<year>2002</year>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Couto]]></surname>
<given-names><![CDATA[G. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Nano nickel particles: synthesis, characterization, properties and study their use as catalysts in obtaining carbon nanotubes]]></source>
<year>2006</year>
<publisher-loc><![CDATA[Curitiba ]]></publisher-loc>
<publisher-name><![CDATA[Departamento de Química, Universidade Federal do Paraná]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gleize]]></surname>
<given-names><![CDATA[P. J. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nanotechnology and construction materials]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Geraldo]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<collab>ISAIA</collab>
<source><![CDATA[Materiales de construcción civil e princípios de ciência e ingeniería de materiales]]></source>
<year>2007</year>
<volume>2</volume>
<page-range>1659-85</page-range><publisher-loc><![CDATA[São Paulo ]]></publisher-loc>
<publisher-name><![CDATA[IBRACON]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ibarra]]></surname>
<given-names><![CDATA[Y. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Gaitero]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Erkizia]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Campillo]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Atomic force microscopy and nanoindentation of cement pastes with nanotube dispersions]]></article-title>
<source><![CDATA[Physica Status Solidi]]></source>
<year>2006</year>
<volume>203</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1076-81</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Koshio]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Yudasaka]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Lijima]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Simple Way to Chemically React Single-Wall Carbon Nanotubes with Organic Materials Using Ultrasonication]]></article-title>
<source><![CDATA[Nano Letters]]></source>
<year>2001</year>
<volume>1</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>361-3</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Konsta-Gdoutos]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Zoi]]></surname>
<given-names><![CDATA[S. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Surendra]]></surname>
<given-names><![CDATA[P. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Highly dispersed carbon nanotube reinforced cement based materials]]></article-title>
<source><![CDATA[Cement and Concrete Research]]></source>
<year>2010</year>
<volume>40</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1052-9</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lai]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[AHP and simulation-based budget determination procedure for public building construction projects]]></article-title>
<source><![CDATA[Automation in Construction]]></source>
<year>2008</year>
<volume>17</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>623-32</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marcondes]]></surname>
<given-names><![CDATA[C. G. N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Addition of carbon nanotubes in concrete portland cement - absorption, permeability, chloride penetration and mechanical properties]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Curitiba ]]></publisher-loc>
<publisher-name><![CDATA[- Departamento de Construcción Civil, Universidade Federal do Paraná]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marchezetti]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Kaviski]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Braga]]></surname>
<given-names><![CDATA[M. C. B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of AHP method for ranking of alternative treatment of solid waste]]></article-title>
<source><![CDATA[Ambiente Construído]]></source>
<year>2011</year>
<volume>11</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>173-87</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mattana]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Medeiros]]></surname>
<given-names><![CDATA[M. H. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[N. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[M. R. M. M. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hierarchical analysis to choose between natural aggregate and sand rock crushing for making mortar coating]]></article-title>
<source><![CDATA[Ambiente Construído]]></source>
<year>2012</year>
<volume>12</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>63-79</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Makar]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Margeson]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Luh]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Carbon nanotube / cement composites - early results and potential applications]]></source>
<year>2005</year>
<conf-name><![CDATA[ International Conference on Construction Materials: Performance, Innovations and Structural Implications, 3]]></conf-name>
<conf-loc>Vancouver </conf-loc>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Metaxa]]></surname>
<given-names><![CDATA[Z. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Seo]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Konsta-Gdoutos]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Hersam]]></surname>
<given-names><![CDATA[M. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Shah]]></surname>
<given-names><![CDATA[S. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Highly concentrated carbon nanotube admixture for nano-fiber reinforced cementitious materials]]></article-title>
<source><![CDATA[Cement and Concrete Composites]]></source>
<year>2012</year>
<volume>34</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>612-7</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mehta]]></surname>
<given-names><![CDATA[P. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Monteiro]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Concrete Microstructure Properties and Materials]]></source>
<year>2013</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[McGraw-Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Neville]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Properties of Concrete]]></source>
<year>1996</year>
<publisher-name><![CDATA[John Wiley &amp; Sons]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nochaiya]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Chaipanich]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Behavior of multi-walled carbon nanotubes on the porosity and microstructure of cement-based materials]]></article-title>
<source><![CDATA[Applied Surface Science]]></source>
<year>2011</year>
<volume>257</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1941-5</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Medeiros]]></surname>
<given-names><![CDATA[M. H. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Levy]]></surname>
<given-names><![CDATA[S. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Concrete durability with recycled aggregates: an application hierarchical analysis]]></article-title>
<source><![CDATA[Ambiente Construído]]></source>
<year>2012</year>
<volume>12</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>125-34</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sobolkina]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mechtcherine]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Khavrus]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Maier]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Mende]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ritschel]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Leonhardt]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dispersion of carbon nanotubes and its influence on the mechanical properties of the cement marix]]></article-title>
<source><![CDATA[Cement and Concrete Composites]]></source>
<year>2012</year>
<volume>34</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1104-13</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saaty]]></surname>
<given-names><![CDATA[T. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Exploring the interface between hierarchies, multiple objectives and Fuzzy sets]]></article-title>
<source><![CDATA[Fuzzy Sets Systems]]></source>
<year>1978</year>
<volume>1</volume>
<page-range>57-68</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zarbin]]></surname>
<given-names><![CDATA[A. J. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chemistry of nanomaterials]]></article-title>
<source><![CDATA[Quim. Nova]]></source>
<year>2007</year>
<volume>30</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1469-79</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
