Concrete strength under impact loading

At the present time there is a lack of basic understanding in the stress-strain behavior of concrete subjected to impact loading or shock action. Strength, of concrete subjected to loadings such as impact depends mainly on concrete composition, water cement ratio, and specific impact viscosity. This is generally determined using experimental methods, both nondestructive and destructive. In addition to presenting the experimental work, this paper briefly discusses the theoretical models used to describe the dynamic behavior of concrete, and development of the apparatus for depicting the basis of the data of static tests, following the stress-strain curve made on the dynamic parameters of concrete. (orig.)