%0 Journal Article
%T Influencia de los ciclos hielo-deshielo en la resistencia del concreto (caso Tunja) Influence of freeze-thaw cycles in the resistance concrete (Tunja case)
%A Diego Fernando P芍ez Moreno
%A Vicente Edilson Leal Moreno
%A Mar赤a Restrepo Burgos
%J Revista Ingenier赤as Universidad de Medell赤n
%D 2009
%I Universidad de Medell赤n
%X El presente art赤culo contiene el an芍lisis de afectaci車n de un agente de deterioro del concreto, conocido como ciclo hielo-deshielo, que se presenta en Tunja en 谷poca de heladas. En 谷l se explica c車mo el fen車meno afecta al concreto tanto cualitativa como cuantitativamente en propiedades f赤sicas y mec芍nicas como porosidad, absorci車n y resistencia, y en su apariencia f赤sica. En la etapa de experimentaci車n se emple車 un grupo de 24 probetas cil赤ndricas de concreto, y se manejaron como variables de experimentaci車n la relaci車n agua/cemento y el tipo de curado, con las que se plante車 una matriz de distribuci車n. Para obtener resultados inmediatos se hizo la simulaci車n de este proceso de forma acelerada, llevando los espec赤menes de concreto a per赤odos de hielo en la noche y de deshielo en el d赤a, durante un tiempo continuo, en los que se manejaron dos ambientes: uno artificial (refrigerador - temperatura baja) y uno natural (ambiente). This article refers to the analysis of a concrete deterioration agent affectation, known as cycle ice - defrosting, which appears in Tunja at time of frosts. It is explained how the phenomenon qualitative and quantitatively affects the concrete in physical and mechanical properties like porosity, absorption, and resistance, as well as in its physical appearance. In the experimentation stage, a group of 24 cylindrical test tubes of concrete was used. Water/cement relation and type fop curing were used as experimentation variables, with them a distribution matrix was proposed. In order to obtain immediate results, a simulation of this process in an accelerated way was made: concrete parts were taken to frosting periods at night and to defrosting periods during the day, at a continuous time in which two environments were used, an artificial one (refrigerator - low temperature) and a natural one (the environment).
%K concreto
%K ciclo hielo-deshielo
%K resistencia
%K afectaci車n por heladas
%K concrete
%K freeze thaw action
%K resistance
%K influenced by frost
%U http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S1692-33242009000300010