Influence of early-age behaviour on structural performance of concrete pavements

Abstract

Influence of early-age concrete behaviour on concrete pavements performance Cracks in joints are the consequence of concrete behaviour in the initial period of use of pavement structures, which can affect structural properties of concrete pavements. Current knowledge on the influence of concrete in the initial period of use of concrete pavement structures is analysed in the paper. The analysis has shown that interaction (in space and time) of the group of joints must be taken into account in the scope of crack behaviour modelling. As a result of this approach, the relationship between joints and crack width can be predicted in order to evaluate their effects on properties of concrete pavements. Key words:concrete pavement, early-age concrete, cracks, joints, structural properties, load transfer Pregledni rad Mauricio Pradena, Lambert Houben Utjecaj ponašanja svježeg betona na svojstva betonskih kolnika Pukotine u razdjelnicama posljedica su ponašanja betona u početku uporabe konstrukcije što može utjecati na konstrukcijska svojstva betonskih kolnika. U radu se analiziraju dosadašnja znanja za procjenu utjecaja betona u početnom periodu uporabe betonske kolničke konstrukcije. Ispitivanje je pokazalo da je pri modeliranju ponašanja pukotina potrebno uzeti u obzir međudjelovanje (u vremenu i prostoru) grupe razdjelnica. Kao rezultat takvog pristupa može se predvidjeti odnos razdjelnica i širina pukotina kako bi se procijenili njihovi učinci na svojstva betonskih kolnika.