RESEARCH ON THE DYNAMIC MECHANICAL PROPERTIES AND CONSTITUTIVE MODELS OF STEEL FIBER REINFORCED CONCRETE AND POLYPROPYLENE FIBER REINFORCED CONCRETE

This paper presents the results of an experimental research designed to investigate the dynamic mechanical properties and constitutive model of fiber reinforced concrete (FRC), including steel fiber reinforced concrete (SFRC) and polypropylene fiber reinforced concrete (PFRC) under fast loading.Experimental results are achieved by using the electro

Introduction Internet use has become integral part of daily living in current world; at the same time its misuse is likely to cause addiction and negative impact in mental health.Internet addiction is similar to other substance addiction and has been associated with different psychiatric comorbidities.Objectives To study prevalence of internet use