Experimental comparison of cracks width and cracks spacing results for beams of self-compacting concrete (SCC) and conventional concrete for period t = 400 days

Concrete is a material which has found a wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of selfcompacting concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity, compression strength, crack with and cracks spacing for duration failure testing time t = 400 days

Cracks Width in The Middle of the Beam for Beams of Self-Compacting Concrete On the Long Term Process

Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of self-compacting concrete and compared it with theoretical results on the middle of beam on long term process

Crack Calculation of Beams from Self-Compacted Concrete

The latest developments of construction of high rise buildings like skyscrapers and different towers indicate that building such constructions with conventional concrete of low consistency is impossible due to the hard concreting process, mounting/demounting of scaffolding and the duration of concrete curing. Lately the most widely used material for construction of special buildings is self-compacting concrete because of the ability to fill entire section of formworks without compaction and vibration and better homogeneity between concrete and reinforcement. With massive USAge of Self Compacted Concrete (SCC) in special buildings, series of researches are conducted all over the world analyzing cracks, mechanical characteristics and deformations of SCC. These researches shows that calculation of concrete elements with normal concrete do not give adequate results according to EC2 because of the concrete class consistency and amount of reinforcement in the cross section. The SCC as raw material provides better results in term of concrete consistency gives better cross section homogeneity and it is vibration free. However SCC concrete cracks, deformations, creep, deflections are different than normal concrete and as such must be calculated and analyzed before application. In this paperwork we have presented calculation of cracks on long term process of SCC beam element after period of t=400 days from concreting and comparison of results with the theoretical ones in line with Eurocode 2 (EC2) requirements

Experimental Comparison of Deflection Results for Beams of Self-Compacted Concrete (SCC) and Conventional Concrete Period t=40 Days

Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact, researches for deflections, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the deflections on beams of selfcompacted concrete and compared it with conventional concrete. The experimentally-obtained results will be presented for both types of concrete for: module of elasticity and deflections tests for duration testing time t=40 days

Explosions, Abnormal Loads on Structures

In Kosovo as well as in many countries of the world have occurred explosions in objects, so this research have addressed the ways and possibilities of protecting the buildings by using their position as construction and design elements\u27 after you load resisted by explosions. This paper presents basic information on the approaches for the evaluation of the blast effects on the structures. Motivation for the present study is recent events happening in the World where more and more structures are being destroyed by unexpected explosions in the urban areas. Intension of this investigation is to present basic information on what will happen when an explosive device is detonated. Some of the methods to calculate blast loads are presented. At the end it is presented simple method of designing a reinforced concrete wall barrier subject to a blast load caused by vehicle bomb. Calculation has been carried based on the kinetic energy that is delivered on the surface of the wall and that energy dissipation by the wall to resist such impulse load