International Journal of Civil and Structural Engineering Research ISSN 2348-7607 (Online) Vol. 7, Issue 2, pp: (66-72), Month: October 2019 - March 2020, Available at: www.researchpublish.com
GEOPOLYMER CONCRETE BASED ON RICE HUSK ASH 1
Mayur Singi, 2Dr. Pankaj Singh, 3Kapil Kushwah, 4Goutam Varma 1
Research Scholar, Civil Engineering, SRKU, Bhopal, MP, India 2
Professor, Civil Engineering, SRKU, Bhopal, MP, India
3
Research Scholar, Civil Engineering, SRKU, Bhopal, MP, India
4
Research Scholar, Civil Engineering, SRKU, Bhopal, MP, India
Abstract: Concrete is an essential building material is widely used in the construction of infrastructure such as buildings, bridges, highways, dams, and many other facilities. Cement the second most consumed product after the water in the world. Geopolymer concrete (GPC) is manufactured using industrial waste having Silica and alumina like fly ash, Red mud, RHA paper ash etc. which is consider as more economical and eco-friendly alternative to OPC based Concrete. The feasibility of production of GPC using Rice Husk Ash (RHA) is evaluated in this study. Additionally the initial and final setting time of Geopolymer paste based on RHA is also studied. For this Study the molarity of NAOH is kept constant that is M16and the alkaline solution ratio is 1:1.85 and alkaline solution to source material is 0.7 & 0.8. Study Show that Geopolymer concrete based on RHA gives good compressive and flexural strength as compare to Ordinary Portland Cement Concrete at different mix. Keywords: Geopolymer concrete (GPC), Rice Husk Ash (RHA), buildings, bridges, highways.
1. INTRODUCTION Concrete is an essential building material which is widely used in the construction of infrastructure such as buildings, bridges, highways, dams and many other facilities. Cement is one of the ingredients usually used as a binder in Concrete. The world-wide demand for Cement to meet infrastructure developments indicates that concrete will continue to be a chosen material of construction in the future. It is well known that cement production depletes significant amount of natural resources and releases large volumes of carbon-dioxide. Cement production is also highly energy-intensive, after steel and aluminium. On the other hand, Rice Husk burning produces huge quantities of Rice Husk Ash. The annual rice husk ash produce in India amounts is generally approximately 120 million tones. Most of the Rice Husk Ash is considered as waste and dumped in landfills.Cement concrete industry has grown astronomically in recent years; it will continue to grow as the result of continuous urban development. Although the use of Cement is still unavoidable until the foreseeable future, many efforts are being made in order to reduce the use ofCement in concrete.These efforts include the utilisation of supplementary cementing materials such as Rice Husk Ash, fly ash, silica fume, granulated blast furnace slag, metakaolin etc. and finding alternative binders toCement.Further, an environmentally compatible disposal of waste material by appropriate technologies is of increasing concern and imposes interesting technical challenges. Construction industry is the one where bulk utilization of waste materials can be effectively done without any compromise on quality performance. It has been established that Rice Husk Ash can replace cement partially.The geopolymer technology developed by Dr. Davidovits in the 1980s offers an attractive solution. Geopolymer:Dr. Davidovits (1988; 1994) proposed that an alkaline liquid could be used to react with the silicon (Si) and the aluminium (Al) in a source material of geological origin or in by-product materials such as Rice Husk Ash, Fly Ash and Red Mud to produce binders.Because the chemical reaction that takes place in this case is a polymerization process, he coined the term „Geopolymer‟ to represent these binders.
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