2007
DOI: 10.1016/j.cemconcomp.2007.03.010
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Influence of paste volume on shrinkage cracking and fracture properties of self-compacting concrete

Abstract: International audienceSelf-compacting concrete (SCC) mixtures are usually designed with higher volumes of paste than vibrated concrete mixtures. The results reported in this paper come from a study of nine SCC concrete mixtures. Volume of paste was varied between 291 and 457 l/m3. One of the mixtures had already been used in a large scale test, and the others were designed by varying several parameters of the reference concrete mixture. Mechanical properties, shrinkage, fracture parameters and fracture process… Show more

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Cited by 150 publications
(83 citation statements)
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“…An even more accurate prediction of microcracking and of the residual mechanical properties after drying should take into account the effects of aggregate restraint, concrete mix (and especially paste volume [49]) and capillary pressure. Indeed, additional damage occurs due to the shrinkage of cement paste restrained by aggregates, while capillary pressure contributes to the increase in compressive and tensile strength of the material.…”
Section: Discussionmentioning
confidence: 99%
“…An even more accurate prediction of microcracking and of the residual mechanical properties after drying should take into account the effects of aggregate restraint, concrete mix (and especially paste volume [49]) and capillary pressure. Indeed, additional damage occurs due to the shrinkage of cement paste restrained by aggregates, while capillary pressure contributes to the increase in compressive and tensile strength of the material.…”
Section: Discussionmentioning
confidence: 99%
“…Como resumen del trabajo desarrollado pueden establecerse las siguientes conclusiones: − Los modelos de cálculo de las normas estudiadas con relación al módulo de deformación, la resistencia a tracción indirecta y 13 la resistencia a flexotracción son aplicables al hormigón autocompactante, al haberse obtenido ajustes muy altos, con respecto a los valores medios de todos los datos.…”
Section: Conclusionesunclassified
“…Respecto a sus aplicaciones están, en general, directamente relacionadas con sus propiedades en estado fresco [1], ya que una de las características más interesantes del material a edades tempranas es su trabajabilidad [2]. Se obtiene a través de la incorporación de finos que además de producir un efecto de mayor fluidez, desencadena un refinamiento en la microestructura que da como resultado una menor cantidad de poros [3,4]. De esta manera el material ofrece una mayor durabilidad frente a las agresiones externas como consecuencia de la red de poros que comunican el exterior con el interior [5].…”
Section: -Introducciónunclassified