Modelling the Severity of Plastic Shrinkage in Cementitious Materials
Abstract
"Plastic shrinkage cracking in cement-based materials occurs between the mixing and the
final setting of the mixture, where rapid evaporation of the mixed water is the main cause
behind the phenomenon. The induced cracks may impair the durability and sustainability
of the structure by facilitating ingress of harmful materials into the concrete bulk. In this
paper a new model for estimating the cracking severity of plastic cementitious materials
is presented based on the mixture’s initial setting time and the amount of the pore liquid
evaporated from within the concrete mass. Results of experiments performed by the
authors in another study, in addition to results of tests performed by other researchers are
used to control the validity of the model. It is concluded that the model can anticipate the
cracking severity of plastic concretes with good precision. The new method can provide
practical tools for designers and contractors to predict and compare the cracking risk of
the concretes prior to casting."
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- Theme 2: Materials and Transportation Engineering [43 items ]