{"id":41913,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/influencia-en-las-caracteristicas-mecanicas-de-adiciones-calizas-de-distinto-tamano-de-grano-en-cementos-portland-de-diferentes-contenidos-de-c3a\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"influencia-en-las-caracteristicas-mecanicas-de-adiciones-calizas-de-distinto-tamano-de-grano-en-cementos-portland-de-diferentes-contenidos-de-c3a","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-tecnologicas\/influencia-en-las-caracteristicas-mecanicas-de-adiciones-calizas-de-distinto-tamano-de-grano-en-cementos-portland-de-diferentes-contenidos-de-c3a\/","title":{"rendered":"Influencia en las caracteristicas mecanicas de adiciones calizas de distinto tama\u00f1o de grano, en cementos portland de diferentes contenidos de c3a."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Alfonso Javier Mora\u00f1o Rodriguez <\/strong><\/h2>\n<p>Las muestras calizas, de diferentes or\u00edgenes empleadas en este estudio, se han caracterizado qu\u00edmica, mineral\u00f3gica y petrogr\u00e1ficamente mediante fluorescencia de rayos x, difracci\u00f3n de rayos x y digitalizaci\u00f3n de im\u00e1genes de l\u00e1minas delgadas respectivamente.  una vez seleccionadas dos muestras de composici\u00f3n qu\u00edmica y mineral\u00f3gica parecidas pero petrogr\u00e1ficamente distintas se han molido y tamizado a diferentes tama\u00f1os (45 um y 90 um), se mezclaron con dos cementos portland, uno de alto contenido en c3a (9,4%) y otro de bajo contenido en c3a (1,7%), en las proporciones siguientes: 5%, 10%, 15% y 20%, realiz\u00e1ndose con estas mezclas los ensayos de resistencia mec\u00e1nica a flexi\u00f3n y comprensi\u00f3n a 2, 7, 28, 90, 120 y 180 d\u00edas de probetas de mortero seg\u00fan la norma une-en 196-1:96. Tambi\u00e9n se ensayaron los cementos de origen (sin caliza), para obtener los valores y usarlos como de referencia.  con las mismas mezclas de cemento\/caliza, se realizaron probetas de pasta de cemento 10 mm x 10 mm x 60 mm para pulirlas y examinar, por microscop\u00eda electr\u00f3nica de barrido, sus caracter\u00edsticas microestructurales (granos de caliza, posible aureola de contacto, etc.).  los resultados obtenidos indican que el comportamiento de las calizas es diferente seg\u00fan su petrograf\u00eda. Las calizas de tama\u00f1o de grano grueso (m\u00e1rmoles, etc.), Por ello las de mayor factor de reducci\u00f3n r, obtienen unas resistencias mec\u00e1nicas a compresi\u00f3n superiores a las de grano fino (micritas, etc.) Para cementos de alto contenido en c3a. As\u00ed mismo estas calizas de grano grueso, pueden clasificarse como adiciones activas para el cemento de contenido elevado de c3a.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Influencia en las caracteristicas mecanicas de adiciones calizas de distinto tama\u00f1o de grano, en cementos portland de diferentes contenidos de c3a.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Influencia en las caracteristicas mecanicas de adiciones calizas de distinto tama\u00f1o de grano, en cementos portland de diferentes contenidos de c3a. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Alfonso Javier Mora\u00f1o Rodriguez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Demetrio Gaspar Tebar<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: raul Ezama martin <\/li>\n<li>Jos\u00e9 Manuel Torralba castello (vocal)<\/li>\n<li>Jos\u00e9 Molina dominguez (vocal)<\/li>\n<li> De lux\u00e1n g\u00f3mez campillo M\u00aa del pilar (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Alfonso Javier Mora\u00f1o Rodriguez Las muestras calizas, de diferentes or\u00edgenes empleadas en este estudio, se han caracterizado [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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