EFFECT OF SILICA FUME ON VARIOUS PROPERTIES OF FIBRE REINFORCED CONCRETE

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1 International Journal of Civil Engineering and Technology (IJCIET) Volume, Issue 4, July-August 216, pp Article ID: IJCIET 4_1 Available online at ISSN Print: and ISSN Online: IAEME Publication EFFECT OF SILICA FUME ON VARIOUS PROPERTIES OF FIBRE REINFORCED CONCRETE Rahul Dogra P.G. Student, Department of Civil Engineering, Chandigarh University, Gharaun, Punjab, India Ankit Assistant Professor, Department of Civil Engineering, Chandigarh University, Gharaun, Punjab, India ABSTRACT Cement is the mainly use construction material in recent trend cement concrete is replace by admixtures such as, slag, fly ash, silica fume to increase the characteristics strength of high performance of concrete in order to decrease the shrinkage and creep and to increase tensile strength, fibers are added. The scope of present research accord with the strength properties of concrete, on the effect of fractionally substitution of cement by silica fume with different percentages viz %, %,. and 1% was used in the concrete and polypropylene fiber used with percentage %,.%. Strength Properties studies involve compressive strength flexural strength tensile strength and abrasion. In present research the strength properties of high strength concrete of M4 grade at days 14 days 28 days characteristic strength with different replacing levels of cement with silica fume are consideration. Standard cubes 1cm x 1cm x 1cm, standard cylinders 1cm dia x 3cm height and standard beam 1cm x 1cm xcm were considered in the research. The study bring that the use of waste material like silica fume develop the strength properties of concrete, which is otherwise unsafe to the environment and thus may be used as a fractionally replacement of cement. Key words: Polypropylene Fiber, Silica Flume, Super Plasticizer, Ordinary Portland Cement 43grade Cite this Article Rahul Dogra and Ankit, Effect of Silica Fume on Various Properties of Fibre Reinforced Concrete. International Journal of Civil Engineering and Technology, (4), 216, pp INTRODUCTION Concrete is the commonly use construction material which has numerous desirable properties like, stiffness high compressive strength and durability under normal usual environmental factors. Concrete is a breakable and mixed material that is strong in compression and weak in tension. We know that concrete mixed with other material was applied for resistance purpose. Without any fiber in the concrete there was development of the cracks due to plastic shrinkage, drying shrinkage and changes in volume of concrete. The development of these cracks causes elastic deformation of concrete. The commonly used fibers are 42 editor@iaeme.com

2 Effect of Silica Fume on Various Properties of Fibre Reinforced Concrete polypropylene, steel, glass carbon, and natural fibers. In this research study polypropylene fiber used with silica flume.polypropylene fibers compose through the fibrillation of polypropylene films, have been use in PCC since the late 196. To control the plastic shrinkage of concrete polypropylene fiber added to concrete as secondary reinforcement. The impact of polypropylene fibers on the properties of concrete lean on the length and type of fiber, the nature of the concrete materials and the mixture design use The common outcome are that compressive strength, split tensile strength, flexural strength and abrasion are better by the adding of polypropylene fiber. A region that has not be earlier investigated is the impact of polypropylene fibers addition among silica fume on cement concrete. Researchers have considered cement concrete as well as polypropylene fiber reinforced concrete, however consider reinforcing fibers and silica fume is a latest approach. In the present work, polypropylene fiber, 12 mm long and 18 micrometer in diameter are used for the preparation of standard M4 grade concrete. A preliminary test program has been accepted out to learn the strength characteristics of fiber reinforced concrete by the adding of polypropylene fiber to concrete. The fiber content is vary as of.%.the addition of silica fume to concrete is efficient for improving the compressive strength, reducing the drying shrinkage, improving the abrasion resistance, improve the bond strength with the reinforcing steel, and reducing the permeability. For workability and flexural strength of fiber reinforced silica fume concrete, silica fume content used was %, %,.% and 1% by replacement of weight of cement in concrete.the major aim of this study proposal are to judge the feasibility of using waste material like silica fume and polypropylene fiber. In this study, it is advised to access at a suitable mix proportion of polypropylene fibers and silica fume in concrete that gives maximum strengths. 2. OBJECTIVE OF THE STUDY The aim of the research the role of adding silica fume and polypropylene fibers to enhances the strength properties of concrete. The objective of research paper use waste material silica flume and polypropylene fiber. The outcome shown in this paper give extra information on the behavior of silica flume and polypropylene fibers in concrete. 3. MATERIAL Materials used in this study Ordinary Portland cement (43grade) of Jaypee brand, coarse aggregate of size of 1 mm and 2mm, fine aggregate, silica fume, water, water decreasing admixture AURAMIX 4 and polypropylene fibers. The small clarification of the materials used is given below Cement OPC (43grade) of Jaypee brand utilized as binder. The various test to be conducted on cement to find out fineness, soundness, specific gravity, standard consistency, initial and final setting time and compressive strength. Specific gravity of cement Coarse Aggregate Grading of the entire aggregate must be closely and continuously observe and should be taken in account in order to composed concrete of invariable quality. Coarse aggregates use in this work are crushed aggregate of size 2 mm and 1mm. Specific gravity of coarse aggregates 2.8 used for 2mm and 1 mm aggregates respectively. Water absorption value at 24 hours of coarse aggregate.2% and fine aggregate 1.% correspondingly. Coarse aggregate 2mm is % used and 1mm % used in the research paper 3.3. Fine Aggregates Fine aggregate utilized in the research is sand and ratify to zone III. Specific gravity value of fine aggregate used was editor@iaeme.com

3 Rahul Dogra and Ankit 3.4. Polypropylene fiber Polypropylene fibers use in this research of 12 mm long and 18 micrometer in diameter size and Specific gravity is Silica fume Silica fume advise change to rheological, mechanical and chemical properties. It improves the durability of the concrete by reinforcing the microstructure through filler impact and hence diminished segregation and bleeding. Silica fume is used in powder form and specific gravity of silica fume is 2.34 used Water The water utilize during the mix design was potable water from the water supply system hence it was free from the suspended solids and organic material, which have ability to influenced the properties of the fresh and hardened concrete. 3.. Chemical Admixture Super plasticizers or water decreasing chemical admixtures are important constituent of concrete. AURAMIX 4 was used as chemical admixture. It assemble through IS: 913:1999 and ASTM-C494 Type 'G' as a high range water reducing admixture. Specific gravity of chemical admixture 1.1 Table 1 Material Material Specific gravity Finess modulus Soundness Cement 3.1 _ 1 Course aggregate _ Fine aggregate _ Silica flume 2.34 Polypropylene fiber METHODOLOGY In this study the mixtures of silica flume ratio of %,.% and 1% was used in the concrete mix and cement is replaced by silica flume. Polypropylene fiber.% constant was used for silica fume concrete mixes. A coarse aggregate ratio of 2.66 and fine aggregate ratio 1. and water ratio.38% with super plasticizer of.6% was used in this study. Each series consists beam, cylinders and cubes as per IS code standard. The tests are performed to find out the flexural strength, split tensile strength and compressive strength and abrasion test of days 14days and 28 days. The mixtures with silica fume having polypropylene fibers in different dosage with same water binder ratio were composed in this study. At the age days 14 day and 28days of each mixture were tested and analysed in order to find out the best efficient mixture in following of strength characteristics of concrete mix.. COMPRESSIVE STRENGTH Concrete cubes confirming to IS code: of size 1cmx1cmx1cm was cast for determine the compressive strength. After 24 hours the moulds were de molded and placed to water curing. Water curing for day 14day and 28day. Before testing, the cubes were air dry for 2 hours, crushing loads were noted for day 14day and 28 days editor@iaeme.com

4 Effect of Silica Fume on Various Properties of Fibre Reinforced Concrete S.No Polypropylene fiber (%) Table 2 Compressive strength Silica Flume (%) Water Cement Ratio Compressive Strength Figure 1 Compressive strength of Concrete It is find out that at %.% and 1% substitution of cement with silica flume compressive strength increase over % of silica flume. The maximum substitution of cement with silica fume is 1% compressive strength increase. Hence the maximum substitution of cement by admixture silica fumes compressive strength increase. 6. SPLIT TENSILE STRENGTH TEST Tensile strength is the basic and essential property of concrete. Size of test sample of 1cm diameter, 3cm height and.3cm thick cylindrical mould is used. The cylinder is placed left and right between the two plates` of the compressive testing machine and the load is applied. The load at which the sample in the end fails is noted and split tensile strength is calculated. S. no days 14 days. 28 days PF.% Polypropylene Fiber (%) Table 3 Split Tensile Strength Silica flume (%) Water cement ratio Silica Fume % Tensile Strength editor@iaeme.com

5 Rahul Dogra and Ankit Silica Fume %. 1 1 days PF.% 14. days 28 days Figure 2 Split Tensile Strength of Concrete It is find out that at %.% and 1% substitution of cement by silica flume compressive strength improve over % of silica flume. The maximum substitution of cement by silica fume is 1% split tensile strength increase. Hence the maximum substitution of cement by admixture silica fume split tensile strength increase.. FLEXURAL STRENGTH TEST The beam is generally tested to identify the flexural behavior of the hardened concrete. The test is perform in a universal testing machine of 6T load ability. Standard beam of size 1cm x 1cm x cm were tested under one point loading to study the flexural strength of concrete. The maximum tensile stress read at the failure of beam is called modulus of rupture and is calculated. S.No Polypropylene Fiber (%) Table 4 Flexural Strength Silica Flume (%) Water Cement Ratio Flexural Strength DAYS 14 DAYS 28 DAYS editor@iaeme.com

6 Effect of Silica Fume on Various Properties of Fibre Reinforced Concrete Silica Fume%. 1 days 14. days 28 days PF.% Figure 3 Flexural Strength of Concrete It is find out that at %.% and 1% substitution of cement with silica flume compressive strength increase over % of silica flume. The maximum substitution of cement with silica fume is 1% flexural strength increase. Hence the maximum substitution of cement by admixture silica fume flexural strength increase. 8. CONCLUSION The study conducted for arising the effect of polypropylene fiber and silica flume on the strength properties of concrete, following observation are drawn from the experimental study 1. The partial replacement of 1% silica flume with cement can giving most extreme conceivable compressive strength with polypropylene fiber 2. Addition of polypropylene fiber improves the tension stiffening effect considerably and this increase the bond stress of reinforced bars in composite fiber reinforced concrete than in plane concrete. 3. Silica fume has no large impact on flexural strength of concrete. In this perspective tests results exhibited in this study, it is fulfilled that a mixed design through 1% silica flume and.% fiber volume division was ideal in flexural quality by means of keeping up an attractive workability. 4. Workability and flow characteristics are reduce by adding of polypropylene fibers in concrete mix; and it also diminishes segregation and bleeding in the concrete blends.. The early age shrinkage of polypropylene fibers decrease and dampness loss of the concrete blend not withstanding when low volume divisions of polypropylene fiber are used. 6. The deformation limit of concrete improve by addition of polypropylene fibers (PPF) and also upgrades the material ductility of concrete.. Polypropylene fibers reduce the settlement, plastic, water permeability and shrinkage 4 editor@iaeme.com

7 Rahul Dogra and Ankit REFERENCES [1] ACI Committee 44, State-of-The-Art Report on Fiber Reinforced Concrete, ACI 44 1.R-96. [2] IS: , Specifications for 43 grade Portland cement, Bureau of Indian Standards, New Delhi, India. [3] Toutanji HA. Properties of polypropylene fiber reinforced silica fume expansive-cement concrete Department of Civil and Environmental Engineering, University of Alabama in Huntsville, AL 3899, USA [4] S: 2386(Part-iii)1963,Indian standard code of practice for Methods of tests for Aggregate, specificgravity, density, voids, absorption, bulcking Bureau of Indian Standards, New Delhi, India. [8] IS (Reaffirmed 1999). Indian Standard code of practice for Methods of tests [] IS: 431(Part-iv,v)1988,Indian standard code of practice for Methods of tests for Properties of cement Bureau of Indian Standards, New Delhi, India. [6] Shetty M.S., 211 Book of Concrete Technology, [] Neel Shah1 Prof. A.R. Darji2, To Study the Effect of Silica Fume on Properties of Macro Polypropylene Blended Fiber Reinforced Concrete, IJSRD International Journal for Scientific Research & Development 2(9), 214 ISSN (online): [8] Mehul J. Patel, S. M. Kulkarni ( ) Effect of Polypropylene Fiber on The High Strength Concrete, Journal of Information, Knowledge And Research in Civil Engineering 2(2), Page 12 [9] Priti A. Patel, Dr. Atul K. Desai., and Dr. Jatin A. Desai, Evaluation of Engineering Properties for Polypropylene Fiber Reinforced Concrete, International Journal of Advanced Engineering Technology, 3(1), January-March 212, pp [1] Vinay Kumar Sing Effect of Polypropylene Research scholar, IJESRT International Journal of Engineering Sciences & Research Technology Singh ISSN: Scientific Journal Impact Factor: (ISRA), Impact Factor: Singh, 3(12): December, 214 [11] Sonu Pal, M.K.Mishra and V. Pandey, Effects of Acidic Curing on The Properties of Untreated and Treated Polyester Fibre Reinforced Concrete, International Journal of Civil Engineering and Technology, (3), 216, pp [12] R. Gopa Kumar and Dr R. Rajesh. A Study on the Abrasion resistance, Compressive strength and Hardness of Banana Fibre Reinforced Natural Rubber Composites. International Journal of Advanced Research in Engineering and Technology, (3), 216, pp 42. [13] Sonu Pal, M.K.Mishra and V. Pandey, Effects of Acidic Curing on The Properties of Untreated and Treated Polyester Fibre Reinforced Concrete, International Journal of Civil Engineering and Technology, (3), 216, pp [14] R.Karthi1, Dr. P. Chandrasekaran2M.E, Ph.D. Study on Properties of High Strength Silica Fume Concrete With polypropylene Fibre International Journal of Innovative Research in Science, Engineering and Technology An ISO 329: 2 Certified Organization 3(2), April editor@iaeme.com

STRENGTH APPRAISAL BY FIBRE EINFORCEMENT IN CONCRETE

STRENGTH APPRAISAL BY FIBRE EINFORCEMENT IN CONCRETE Madhuri M. Nerpawar 1, S.S.Bachhav 2, D.Y. Kshirsagar 3 1 Master of Engineering Student, 2 PG Coordinator, 3 Head of Department Department of Civil