Engineering, Technology & Applied Science Research Vol. 8, No. 3, 2018, 3041-3043 3041 www.etasr.com Sohu et al.: Flexural Performance of Concrete Reinforced by Plastic Fibers Flexural Performance of Concrete Reinforced by Plastic Fibers Muhammad Tahir Lakhiar Faculty of Civil and Environmental Engineering Universiti Tun Hussein Onn Malaysia Parit Raja, Johor, Malaysia mtl.eng17@gmail.com Samiullah Sohu Faculty of Civil and Environmental Engineering Universiti Tun Hussein Onn Malaysia Parit Raja, Johor, Malaysia sohoosamiullah@gmail.com Imtiaz Ali Bhatti Faculty of Civil and Environmental Engineering Universiti Tun Hussein Onn Malaysia Parit Raja, Johor, Malaysia Engrimtiaz290@gmail.com Nadeem-ul-Kareem Bhatti Department of Civil Engineering Quaid-e-Awam University of Engineering, Science & Technology Nawabshah, Pakistan knadeem_b@yahoo.com Suhail Ahmed Abbasi Department of Civil Engineering Quaid-e-Awam University of Engineering, Science & Technology Nawabshah, Pakistan abbasi.suhail2009@gmail.com Muhammad Tarique Department of Civil Engineering Mehran University of Engineering and Technology Jamshoro, Sindh, Pakistan mtarique181@gmail.com Abstract—For sustainable development construction, recycle or reuse of waste materials is utilized. Many researchers conducted tried to create an innovative green concrete, utilizing waste materials. The aim of this research is to contribute and promote the use of plastic waste in concrete. The concrete’s flexural and workability were investigated by using different percentages of 0%, 0.2%, 0.4%, 0.6%, 0.8% and 1% of plastic fibers in concrete. In this study, M15 grade concrete beams were casted and cured for 7 and 28 days to analyze the flexural performance and workability. The outcomes demonstrated that the workability was slightly reduced by the utilizing plastic fibers where flexural strength improved by 16.5% at 0.6% addition of plastic fibers in concrete. Keywords-flexural strength; workability; plastic fibers; green concrete I. INTRODUCTION Concrete is a material widely utilized in construction industry due to its many benefits. It is feasible, durable and economical compared to other building materials [1-3]. Flexural strength of concrete is minimum compared to compressive strength because concrete is brittle in nature [4]. To enhance the flexural strength, steel fibers are mostly used as reinforcement [5]. Steel contributes to the carbon dioxide CO2 emission in atmosphere during its manufacturing which contributes to global warming [6] and therefore, the need of sustainable green concrete raises day by day. Concrete made from waste, which is more eco-friendly, is known as green concrete. In other words, green concrete is the concrete in which waste materials are utilized in order to save natural resources and thus decrease environmental pollution. In this type of concrete, waste material is used to at replace least one of its ingredients. If its production process does not affect the environment, production procedures, life cycle sustainability and quantity of cement are the key factors adopted to categorize whether a concrete is green or not [7, 8]. The main purpose of developing green concrete is to minimize CO2 gas emissions which cause environmental pollution and to re-use waste materials, which create disposal problems. II. MATERIALS AND METHODOLOGY A. Materials For this experimental study, M15 grade concrete (1:2:4 ratio) was utilized with water-cement ratio constant at 0.55. The material properties of fine and coarse aggregates and cement are shown in Tables I-III. Plastic fibers (Figure 1) were utilized from 0%-0.6% with increment of 0.2%. Ordinary Portland cement was utilized for this research. B. Methodology M15 grade concrete was casted incorporating 0%-1% with increment of 0.2% of plastic fibers. Two concrete beam types were casted. One was conventional concrete beam which had 0% of plastic fibers (PF) and the other was plastic fiber concrete beam (PFC-B) which contained plastic fibers. Fifty four beams were casted, three beams were tested for each proportions at each curing age. The beams, having size 150mmx200mmx1500mm, were tested for flexural strength at different water curing regimes of 7, 14 and 28 days. Mixing was carried out utilizing a rotary mixer. The concrete mix workability was examined by standard slump test using standard slump cone and procedures according to ASTM C 143. All cubes were extracted from the molds after 24 hours and cured for the required age of testing. The concrete flexural str AS C7 A. wo sho slig B. AS out Fig per Engineerin www.etasr rength was tes STM followed 78/78M-18. TABLE I S. N 0 02 03 04 TABLE II. S TABLE S I Slump Test (A ASTM C 1 orkability of c own in Table ghtly decrease TA Convent PF PF PF PF P Flexural Stre Flexural stre STM C78/78M tcomes of all gure 2. The rformance inc ng, Technology r.com ted using thre d the overall I. MATERIA No. T 1 Water ab 2 Specific 3 Finess m 4 Co . MATERIAL . No. T 01 Water a 02 Specif 03 Finess E III. MATERI S. No. T 01 Cons 02 Specif 03 Finess Fig. 1. III. RESULT (ASTM C 143) 143 standard concrete. Work IV. The resul ed incorporatin ABLE IV. SLU Mixtures tional Concrete B FC-B (0.2% PF) FC-B (0.4% PF) FC-B (0.6% PF) FC-B (0.8% PF) FC-B (1% PF) ength of Beam ength test w M-18 standar l concrete mi outcomes de creased rapidly y & Applied Sci ee point flexur procedure d AL PROPERTIES OF Test R bsorption c gravity modulus olor Lig PROPERTIES OF C Test R absorption 1 fic gravity modulus IAL PROPERTIES O Test Re sistency 3 fic gravity 3 modulus Plastic fibers TS AND DISCUS [9] was fal kability or slu lts show that t ng the plastic f UMP FLOW OF CON Slump Beam 2 2 2 2 m as performed rd [10]. The ixes are show emonstrated t y by utilizing ience Research ral loading tes escribed in A FINE AGGREGATE Results 1.1% 2.6 2.96 ght brown OARSE AGGREGA Results 1.19% 2.68 6.15 OF CEMENT (O.P.C) esults 31% 3.14 1.18 SION llowed to ge ump flow resul the slump flow fibers in concr NCRETE MIX. Values(mm) 32.37 30.34 29.50 28.24 26.32 25.65 d according t e flexural str wn in Table V that beam fle plastic fibers h V Sohu et al.: t. The ASTM ES TES ) et the lts are w was rete. to the rength V and exural up to 0.8% the dec wat rap util PFC 2.54 plas flow the fou con [1] [2] [3] [4] [5] Vol. 8, No. 3, 20 : Flexural Perfo % and then it flexural stren creased 1.5% ter curing, the idly up to 0.8 lized. After 28 C-B 16.52% 4% when 1% TABL Mixtu Conventional C PFC-B (0 PFC-B (0 PFC-B (0 PFC-B (0 PFC-B ( Fig. 2. The workabil stic fibers we w. The flexura control samp und to be 0.6% ncrete in conte M. T. Lakhiar, Jhatial, A. A. A Tensile Strength Vol. 8, No. 2, p Z. Li, Advanced A. M. Neville, P R. Nagalakshm concrete with p aggregate with Engineering Re E. Mello, C. Properties with Environmental 018, 3041-3043 formance of Co decreased slig ngth of PFC-B when 1% of e flexural stren % and decrea 8 days water increased rap of PF were uti LE V. FLEXU ures Concrete Beam 0.2% PF) 0.4% PF) 0.6% PF) 0.8% PF) 1% PF) Flexural stren IV. CO lity of concret ere added beca al strength inc ple. The opti % and it enhan xt of all other REFER , N. Mohamad, Abdul Samad, “E h”, Engineering T pp. 2796-2798, 20 d Concrete Techn Properties of Con mi, “Experimental partial replaceme h coconut shell”, esearch, Vol. 4, N Ribellato, E. M h Fibers Additio Engineering, Vol ncrete Reinforc ghtly. After 7 B 11 % increas PF were utiliz ngth of PFC-B ased 1.42% wh curing, the f idly up to 0. ilized. URAL STRENGTH O Flexural St 7 days 14 1.96 2 2.08 2 2.13 2 2.18 2 2.15 2 1.93 2 ngth outcomes of ONCLUSION te slightly red ause of the fi creased up to 1 imum percent nced the flexu mixes. RENCES M.A. B. 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