engleski

Prediction of seismic behavior of reinforced self- consolidating rubberized concrete structural elements

Old tires, as a highly durable and non- biodegradable material, are a challenging source of waste which consumes valued space in landfills. The biggest problem with discarding old tires is that they contain chemicals and heavy metals that leach into the environment as the tires break down. One of the research directions in recent years is the use of waste tires in technologies for the production of concrete which consumes a large amount of natural resources. It is also the most used material in construction wherefore it is very important to know behavior of Reinforced Concrete (RC) structures under seismic loading in order to ensure that a structure is able to withstand a given level of ground shaking. One of the concrete’s characteristics which influences behavior of RC structures is ductility which is very low. Based on own experimental results of stress-strain behavior, it is concluded that partial replacement of natural aggregate with rubber particles improves the ductility of concrete. Aim of this work was to compare the seismic response of four-storey two-bay numerical model with implemented properties of plain self- consolidating concrete and self-consolidating rubberized concretes. Tri-linear stress-strain model of concrete was used for the analyses. Three different seismic analyses were conducted in SeismoStruct (2018) including Modal Analysis, Pushover Analysis, and Time-History Analysis for ten earthquake scenarios. Based on obtained results, prediction and comparison of seismic behavior between reinforced rubberized concrete and normal reinforced concrete elements was discussed.

rubberized concrete ; modal analysis ; pushover analysis ; time-history analysis ; stress-strain behavior

nije evidentirano