APPLICATION OF THE LAYERING METHOD ON LARGE CONCRETE POURS

In large concrete constructions, differences in temperature develop wi thin the concrete mass as a result of slow dissipation of heat of hydr ation, causing thermal stresses and possibly early cracking of concret e. In some instances, cooling of concrete has been used successfully t o reduce the temperature difference, although in hot weather it may be difficult and costly to cool large volumes of concrete. This paper pr oposes a new layering method in which only the central portion of conc rete is cooled for the reduction of temperature differences. The resul ts of computer simulations involving the application of this layering method are presented.