Kristina Jeleč

University of Osijek | UNIOS · Faculty of Civil Engineering

Rubberized concrete is a promising material for the structural elements, created by replacing sand with rubber particles in order to significantly reduce environmental impacts from large tyre waste with improved behaviour under earthquake loads. Experimental studies on nine columns and three frames were carried out in order to determine the capacit...

A sustainable solution was found for the use of waste material such as used tires by partially replacing the natural aggregate in the concrete with recycled rubber particles. This resulted in improved ductility, but at the expense of reduced strength and stiffness. To further investigate the behavior of rubberized concrete, this paper investigates...

Doctoral thesis theme public presentation: Behavior of reinforced self-consolidating rubberized concrete structures under the seismic load

Reducing the industry’s impact on the environment is the goal of sustainable construction which can be achieved by using renewable and recyclable resources such as scrap tire waste. Great potential of this waste is found in construction mostly as a partial replacement of mineral aggregate in concrete and mortars, asphalt mixtures and geotechnical w...

Cross laminated timber (CLT), as a versatile engineered timber product, has in recent years become well-known and of global interests. The orthogonal laminar structure allows for application as beams, walls or panels for both out-of-plane and in-plane loading conditions. The work presented here concerns experimental investigations of in-plane loade...

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...

The paper aims to investigate the influence of waste tire rubber and silica fume on the fresh and hardened properties of self-compacting concrete (SCC) and to design multivariate regression models for the prediction of the mechanical properties of self-compacting rubberized concrete (SCRC). For this purpose, 21 concrete mixtures were designed. Crum...

Knowing the response of buildings to earthquakes is very important in order to ensure that a structure is able to withstand a given level of ground shaking. Thus, nonlinear dynamic earthquake engineering analyses are unavoidable and are preferable procedure in the seismic assessment of buildings. In order to estimate seismic performance on the basi...

Utilization and reuse of waste rubber tires in concrete leads to sustainable construction. There are number of studies that have been conducted on concrete with rubber as aggregate in order to maintain mechanical properties and durability of material. Contrary, only several studies have been conducted on usage of waste rubber tires as aggregate in...

In order to test the reliability of neural networks for the prediction of the behaviour of multi-storey multi-bay infilled frames, neural network processing was done on an experimental database of one-storey one-bay reinforced-concrete (RC) frames with masonry infills. From the obtained results it is demonstrated that they are acceptable for the pr...

Earthquake engineering analyses are unavoidable to obtain response of buildings to earth-quakes in order to ensure for structure to withstand a given level of ground shaking and to maintain a desired level of performance. Main reasons are vagueness and uncertainties related to the ground motion and structural modeling parameters in the available da...

Inclusion of rubber into concrete changes its behavior and the established shape of its stress-strain curve. Existing constitutive stress-strain models for concrete are not valid in case of rubberized concrete, and currently available modified models require additional validation on a larger database of experimental results, with a wider set of inf...

From the standpoint of sustainability, increase of the consumption of renewable resources is a key factor to preserve the natural resources. Concrete is the most usable material for structural elements, and the major contributors to concrete volume are natural aggregates. A significant amount of natural resources can be saved if recycled aggregates...

In the past few decades, due to the exponential increase of the world’s population, the number of discarded waste tires has become a serious ecological and environmental problem. Decomposition of waste tire rubber can take longer than 50 years, and every year the number of discarded tires is rapidly growing. With the inclusion of waste tire rubber...

In this paper, the concept of fire protection is elaborated and the main focus is on steel structures that are very sensitive to the effects of high temperature caused by fire. The papper is divided into a theoretical and practical part. The theoretical part briefly describes the laws and regulations in the field of fire engineering in Croatia, exp...

Abstract:Cross laminated timber (CLT), being a versatile engineered timber product, has in recent years become well-known and of global interest inmany applicationssuch as full size plane or linear timber elements. This paper is aimed at investigating the performance of CLT beams loaded in-plane with special emphasis on shear loading and the in-pla...