International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
www.irjet.net
EXPERIMENTAL STUDY OF SCC BY ADDING POLYPROPYLENE FIBER WITH CASHEW NUT SHELL ASH AS PARTIAL REPLACEMENT OF CEMENT Swetha Chandran1, Er. Rajeev V. S.2 1PG Student, Dept. of Civil Engineering, Universal Engineering College, Vallivattom, Kerala, India 2Assistant Professor, Dept. of Civil Engineering, Universal Engineering College, Vallivattom, Kerala, India
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract - In the present day, for the purpose of replacing the cement there is much research is being globally to identify a
suitable cementitous material to take the role of cement. In this paper, the main aim of the project is to study the mechanical properties of the self-compacting concrete (SCC) by adding polypropylene fiber with cashew nut shell ash (CNSA) as partial replacement of cement with different proportions. The fresh and hardened properties of the SCC with this materials with different proportions and control one were investigated. The cashew nut shell ash is an excellent cementitious material used as partial replacement of cement and which have similar properties compared to cement. Polypropylene fiber (PPF) was added to concrete at 1% and replacement of cement with CNSA at 5%, 10%, 15% and 20%. The mould used for casting SCC are cube (150mmx150mmx150mm), cylinder (150mmx300mm). The compressive strength and split tensile strength of casted SCC are noted along with the curing period of 7 and 28 days. The results showed that 10% mix have the optimum value more than control mix.
Key Words: Cashew nut shell ash, Polypropylene fiber, Compressive strength, Split tensile strength, Selfcompacting concrete
1. INTRODUCTION Self-compacting concrete is cutting edge method that does not require vibration for placing and compaction. The serious durability issues arises in place like the marine environment, underground etc. due to sulphate attack chloride attack and carbonation can be eliminated by using SCC. Which make quick concrete placement compared to normal concrete, homogeneity, which does not use vibrating equipment for placing, which have higher productivity, which need fewer air spaces, which reduce the noise, and also enhance the strength and durability. The industrial by-products like fly ash, silica fume, metakaolin etc., provide excellent binding properties to concrete and which used as a replacing material of cement. These substances are generally termed as supplementary cementitious materials. Self-compacting concrete is a mix of cement as binding material, water, sand and coarse aggregate. The expanding need for the use of cement could be increased day by day. There for the need of substitutive binder or replacement materials to cement is increased and which make to find the possibilities of utilizing industrial waste products as cementitious material. Some of the reports shows that the construction industry is responsible for 23% of the total CO2 released in global economic activities because the demand for concrete in the construction sector is ever-growing today, that also increases the production of cement, which causes the emission of CO2. The substitution of supplementary cementitious material (SCM) reduces the clinker production, which in help to reduce the energy demand. Considering the chemical and physical properties of the agro-waste ashes (AWAs) which can be used as the replacing material. In this way, we can reduce the environmental impact by reducing the clinker production, and the open field burning of agro-based wastes. In his project we can used as the SCM as cashew nut shell ash. Which reduces the amount of cement and attain the strength more than control mix. The Polypropylene Fiber is a kind of linear polymer synthetic fiber having lightweight, high strength, high toughness and corrosion resistance. The main role of polypropylene fiber is to overcome shrinkage and limit the formation of cracks in the concrete. Which is used in self-compacting concrete to reduce shrinkage and formation of cracks.
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