42|Int. J. of Multidisciplinary and Current research, Vol.3 (Jan/Feb 2015) International Journal of Multidisciplinary and Current Research Research Article ISSN: 2321-3124 Available at: http://ijmcr.com Deflection for Beams of Self-Compacted Concrete (SCC) and Conventional Concrete for Period t= 40 Days Mr.Sc. Arton Dautaj 1 and Prof. Ass. Dr. Hajdar E. Sadiku 2 12 Civil Engineering and Architectural Faculty University “Hasan Prishtina” of Prishtina Accepted 23 Jan 2015, Available online 01 Feb 2015, Vol.3 (Jan/Feb 2015 issue) Abstract Development trends for high rise Building or structures, modern skyscrapers request the different workability of fresh concrete to cast in properly way and to achieve the requested results. The many of factors such are: highest of the cast concrete, sections of concrete elements, request the concrete with more plasticity and higher class of consistency, the smaller size of aggregate, the compacted process, etc. The fulfilling the previous condition, using the Self Compacted Concrete is one of the aims in this paper. Considering this fact, researches for deflections, mechanical characteristics of concrete and strains have been conducted worldwide. In this line, we conducted an experimental research to determine the deflections on beams of self-compacted 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. Keywords: Self-Compacting Concrete, Conventional Concrete, deflections, modulus of elasticity, etc. 1. Introduction The self-compacted concrete has recently gained widespread acceptance worldwide because of its usage in high-capacity buildings. This is also because of its capabilities when put into action (when practically implemented). In 2008, the self-compacted concrete has also been used in our country in repairing the bridges throughout road segment at Hani i Elezit in Kaqanik. For this reason, a new research study is necessary to analyze its deformities features (deflections, modulation, etc.), during both short-term and long-term cargo operations. In order to determine the mechanical characteristics, a considerable number of testing samples have been prepared where 18 beams have been categorized in three series as follows: Series A - with six conventional concrete beams Series B - with six self-compacted concrete beams and Series C- with six core-based conventional concrete covered by self-compacted concrete This study aims to represent the composition and preparation of these two types of concrete and provides the experimental findings about the modulus of the elasticity and reduction samples and tested beams for both types of concrete for test time duration of t=40 days. 2. Sample preparation materials and methods In concrete production, the three-fractions aggregate has been used. It is a property of Vëllezërit e Bashkuar, based in Prizren, which is made of limestone rocks. In order to produce self-compacted concrete, the SUPERFLUID 21M additive, property of ADING-Skopje, has been applied to the sample, while stone-made powder used in the process comes from the same aggregate. Figure 1 below represents the curves of aggregate for respective fractions: F {I} Fractions (0-4) F{II} Fractions (4-8) F{III} Fractions (8-16) Fig. 1 Sieve curve of aggregate F (I) F (II) F (III) 0 10 20 30 40 50 60 70 80 90 100 0.25 0.5 1 2 4 8 16 31.5 ( mm ) ( % ) F (I) F (II) F (III)