Performance of cast-in anchors in early age concrete

The current study investigated the effect of concrete mechanical properties such as concrete compressive strength, fracture energy, tensile strength, Poisson’s ratio, and modulus of elasticity on the performance of cast-in anchors under tensile loading conditions as early as 18 hours. Based on the experimental and numerical results, a proper modification have been proposed for the available equations for predicting the capacity of cast-in anchors, the CCD equation (Concrete capacity method) of Fuchs et al. (1995) and the energy equation of Sawade (1994) (Eligehausen et al., 2006). These modifications are suitable for ages less than three days and the compressive strength between 6.5 MPa and 20 MPa. Therefore, proposed model can contribute in ease the production of concrete precast units at ages as early as 18 hours depending on concrete compressive strength.