Marko Stojanovic

• PhD candidat
• Research Associate at Institut za ispitivanje materijala IMS a.d. Beograd

This study compared the performance of self-compacting concrete (SCC) based on fly ash addition and limestone filler. A SCC prepared with Portland cement, river sand, and limestone filler was used as a reference sample. Additional experimental self-compacting concretes with different types of fine aggregates, fillers, and special additives for incr...

With the adoption of the Rulebook on technical requirements for concrete, the responsibility for placing/making available of concrete on the market is assumed by the producer, who is subject to significantly greater obligations, jurisdiction and requirements that he has to fulfil. We expect that the Rulebook will contribute to improving the quality...

Quantity of waste rubber generated by automobile tires is growing, posing an environmental threat. Rubber tire recycling was studied for usage in asphalt and waterproofing systems during past few decades. Globally, concrete is the most widely used building material. About 7% of CO2 emissions come from the cement production. The purpose of this rese...

The main objective of the research was to estimate the feasibility of construction and demolition waste (CDW) application in the production of frost-resistant masonry clay elements. After being formed into hollow masonry blocks and bricks, the experimental samples were dried and fired. Chemical, granulometric, mineralogical, differential-thermal, a...

Global warming and the emission of CO2 into the atmosphere is becoming a bigger problem in the world every year. The desire for a global increase in production and the ever-increasing development of industry are the cause of the increased amount of waste in landfills and environmental pollution. Concrete is the most used construction material in th...

Self-compacting concrete (SCC), a non-shaped composite building material, has improved microstructure packing, strength, and durability thanks to the use of fly ash, a highly effective mineral additive. Performances of SCC with fly ash and conventional SCC with limestone filler were compared. Additional experimental self-compacting concretes were m...

The impacts of nano-silica addition, steel micro-reinforcement, and aggregate type on the mechanical properties and durability of ultra-high-performance concrete (UHPC) were studied. As aggregates, quartz and barite were used. The amounts of steel fibers and nano-silica were alternated. Six concrete mixes were produced with quartz sand, and the rem...

This study compared the performance of self-compacting concrete (SCC) based on fly ash addition and limestone filler. A SCC prepared with Portland cement, river sand, and limestone filler was used as a reference sample. Additional experimental self-compacting concretes with different types of fine aggregates, fillers, and special additives for incr...

Research on the application of nano materials in cement composites in the world began in the early 21st century. When preparing UHPC, nano SiO2 was used. The aim of the research is to determine the influence of nano-silica, as partial substitution for cement on the mechanical properties of UHPC. The results of the comparative testing of concrete in...

In order to examine the differences in chemical composition and the possibility of using mine tailings in mortar and concrete production, samples were taken from the landfill and directly from the production. Tailings test results showed no pozzolanic activity and that its application in concrete can be only a partial replacement of aggregate. This...

Concrete exposed to frost and de-icing salts have to be protected by aeration. This is achieved by adding chemical additives to draw air into the fresh concrete. These concretes have resulted in a decrease of compressive strength of concrete by 5% for each percent of entrained air in comparison to the conventional concrete. Three concrete mixtures...

The extension of spans in reinforced concrete structures is achieved through the pre-stressing of structural elements. Accurate determination of pre-stressing force is critical, as it depends significantly on the friction coefficient of cables and the imperfection coefficient of execution. These parameters, typically defined by standards or manufac...

The development of building materials with improved characteristics and their application for increasing structure durability and sustainability is one of the goals in construction sector. The main objective of this paper is to evaluate the influence of nano-silica replacement of cement (2% or 5%) and aggregate type (quartz, barite or its combinati...

A large number of studies throughout the world deals with producing material which has a significantly improved properties compared to conventional materials. The application of nanosilica is one of the possibilities for obtaining high strength concrete. This paper shows the influence of nanosilica and steel fibers on the mechanical properties of c...

Adequate measures must be taken during the determination of the concrete composition for ensuring the durability of concrete exposed to an aggressive environment. The influence of the cement type on the freeze/thaw resistance with and without de-icing salt of concrete was tested. Samples were made using five types of cement. All types of concrete m...

The investigation of posibilities of concrete structure modification by silica fume to improve concrete properties was presented in this report. Percentage of silica fume in regard to cement varied between 0% and 20%. Concrete was cured as follows: in water, steam-curing regime at +60°C and +90°C. The results of the compressive and tensile strength...

Cement based materials in the agricultural and other industrial structures are exposed to acid attack. That is the reason why the service life of structure depends on the durability of mortar or concrete elements in aggressive environment. Resistance to corrosion caused by sulphate, nitrate, carbamide, lactic acid and acetic acid was presented. Opt...