A Study of the Behavior of Cement Concrete under the Vibratory Action of a Vibrostand

Abstract

By addressing itself to the vibrational liquefaction feature of cement concrete and modeling based on the behavior of cement concrete under the vibratory action of a vibrostand, this paper comes to the differential equations of motion of element granules in concrete and, based on the model, analyzes the vibrational liquefaction mechanism of cement concrete and the effect of vibration parameters on the vibrational behavior of cement concrete to advantage guidance on cement concrete project construction. In indoor cement concrete proportioning tests, a vibrostand has to be used to compact concrete by vibrational liquefaction, so as to increase its workability and strength. Through researches on the rheological feature of a fresh concrete mixture, we can consider it as a Bingham solid composed of a Hooke solid and a visco-plastic solid; under forced vibrations, the vibration system composed of elements, such as sand granule, and their periphery has certain stiffness k and damping c. Mathematic modeling of the vibration system advantages researches on the behavior of cement concrete under the vibratory action of a vibrostand.