Experimental assessment of the influence of multiple cyclic loading on the dynamic modulus of elasticity of concrete

Abstract

Abstract. The goal of the experiment was to determine the influence that cyclic loading has on concrete dynamic modulus of elasticity and compressive strength. Each test specimen was subjected to cyclic loading with the loading force equivalent to one third of the expected compressive strength value similarly to the static modulus of elasticity test with the difference that the total number of loading cycles was 3000. The dynamic modulus of elasticity was determined on every specimen before and after loading by means of the ultrasonic pulse velocity test and resonance method. The result of the experiment is the degree to which the dynamic modulus of elasticity decreased after multiple cyclic loading. A decrease was observed in all specimens.

Experimental Assessment of the Influence of Multiple Cyclic Loading on Selected Properties of Lightweight Concrete

“…Lightweight concrete with porous aggregate has become more commonplace in construction industry. Since the used aggregate influences the elastic properties of concrete to a large extent [1,2], it can be assumed that the behaviour of multiply loaded lightweight concrete will significantly differ from normal-weight concrete with natural aggregate, as has already been described in [3]. This paper describes a part of an experiment in which lightweight concrete was subjected to cyclic compressive loading in the elastic range of the stress-strain curve and the number of cycles reached 4000.…”