The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking

The study aims to investigate the mechanism of early-age cracks in different massive concrete structures (i.e. tunnels, bridge foundations and underground parking garages), with objective answering following three specific questions: To basic a research program is performed which mixes are tested Temperature Stress Testing Machine (TSTM). Furthermore autogenous shrinkage measured ways. Modeling FEM-tool used predict risk early age cracking. results indicate that combined (or expansion relaxation creep) during first hours hydration have huge influence on stresses develop later important determine cracking structures. Since investigating built up after casting such TSTM rather difficult, we designed new version machine dog bone specimens vertically Universal (Instron).