Sscs Numerical Modeling Strategies for Sustainable Concrete Structures
Abstract
One of the most important issues to be taken into account while defining the construction phasing of
massive elements, such as dams or thick walls, is the height of each construction stage. In fact, if the
height of casting of each construction stage is increased, the temperature variations associated to heat
of hydration are raised, with a consequent increase of concrete cracking risk. On the other hand, if the
height of each construction phase is reduced, overall construction schedules are penalized, and costs
are increased. The thickness of the concrete elements to be cast in each stage should be then as large as
possible without causing thermal cracks. The evaluation of alternative construction scenarios and their
cracking risk can be assessed with thermo-mechanical models. This paper aims to present an
application of thermo-mechanical modeling to the central wall of a dam spillway entrance. The case
study has added interest in view of the extensive material characterization, in-situ monitoring of
temperature/strain, and the use of air-cooled pipes to reduce temperature increase in concrete
