{"id":41850,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/flexural-toughness-characterization-of-steel-fiber-reinforced-concrete-study-of-experimental-methodologies-and-size-effects\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"flexural-toughness-characterization-of-steel-fiber-reinforced-concrete-study-of-experimental-methodologies-and-size-effects","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-tecnologicas\/flexural-toughness-characterization-of-steel-fiber-reinforced-concrete-study-of-experimental-methodologies-and-size-effects\/","title":{"rendered":"Flexural toughness characterization of steel fiber reinforced concrete.  study of experimental methodologies and size effects."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Hector Saldivar Moguel <\/strong><\/h2>\n<p>Este trabajo estudia los procedimientos de ensayo disponibles para la caracterizaci\u00f3n de la tenacidad en flexotracci\u00f3n de hormigones reforzados con fibras de acero (hrfa). Se consideran los aspectos metodolog\u00edcos m\u00e1s importantes que influyen en la caracterizaci\u00f3n de la tenacidad y el efecto de la geometr\u00eda de la probeta tanto en el m\u00f3dulo de rotura como en la tenacidad.  en la metodolog\u00eda se plantearon tres configuraciones de ensayo en flexotracci\u00f3n con probetas est\u00e1ndar de secci\u00f3n 150&#215;150 mm y longitud 600 mm; primero, el m\u00e9todo m\u00e1s usado mediante el ensayo de flexotracci\u00f3n con cargas a un tercio (ctl) de la luz entre apoyos, segundo, el ensayo de carga central (ccl) y por \u00faltimo el ensayo de carga centra en probetas entalladas (ccle). Adem\u00e1s, se ensayaron probetas de distinto tama\u00f1o y geometr\u00eda con la configuraci\u00f3n ccl. Se fabricaron hrca con distintas resistencias, tipos y contenidos de fibras.  la respuesta carga-flecha de los ensayos en ctl se utilizaron para evaluar la fiabilidad de los par\u00e1metros convencionales propuestos en diferentes normas internacionales, incluida la norma une 83-510-89. Estos par\u00e1metros tambi\u00e9n se calcularon con las respuestas carga-flecha de las configuraciones de ensayo ccl y ccle. Y finalmente, se calcularon par\u00e1metros similares utilizando la respuesta carga-apertura de fisura de las vigas estalladas.  el proceso de fabricaci\u00f3n influye la respuesta de los hrca. La compactaci\u00f3n con mesa vibratoria crea una orientaci\u00f3n preferente y segregaci\u00f3n vertical mayor que los m\u00e9todos de barra y aguja vibratoria. Debido a este efecto de orientaci\u00f3n de los m\u00e9todos de compactaci\u00f3n es recomendable aplicar la carga en la probeta perpendicularmente a la direcci\u00f3n de llenado.  los resultados de las distintas configuraciones fueron satisfactorios, aunque el control se facilita con ensayos en carga central y vigas entalladas. En punto de primera fisura no es f\u00e1cil de evalua<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Flexural toughness characterization of steel fiber reinforced concrete.  study of experimental methodologies and size effects.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Flexural toughness characterization of steel fiber reinforced concrete.  study of experimental methodologies and size effects. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Hector Saldivar Moguel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de catalunya<\/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>Ravindra Gettu<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: angel Carlos Aparicio bengoechea <\/li>\n<li>lucie Vandewalle (vocal)<\/li>\n<li>Manuel Fern\u00e1ndez c\u00e1novas (vocal)<\/li>\n<li>pedro Serna ros (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Hector Saldivar Moguel Este trabajo estudia los procedimientos de ensayo disponibles para la caracterizaci\u00f3n de la tenacidad [&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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