Title: A REVIEW ON SILICA FUME - AN ADDITIVE IN CONCRETE
Abstract:Concrete is the most versatile, durable and reliable construction material in the world. And which required large quantities of Portland cement. Ordinary Portland cement production is second only to t...Concrete is the most versatile, durable and reliable construction material in the world. And which required large quantities of Portland cement. Ordinary Portland cement production is second only to the automobile as the major generator of carbon dioxide, which degrades the environment. In addition, large amount of energy is also consumed for the cement production. On an average, approximately 1 ton of cement is being produced each year for every human being in the world. Hence, in order to protect the environment, the main concern of minimizing CO2 emission can be realized by reducing the percentage of cement used in making concrete. Therefore, it has been suggested to deploy new technology materials like geopolymers. Geopolymer concrete is an new technology which is produced by the chemical action of inorganic molecules. Geopolymer technology is a generic term coined by Joseph Davidovits in the 1970s and describes all alkali activated materials. These alkali-activated materials are produced through the reaction of an aluminosilicate material rich in (Si + Al) but has low CaO content which is normally supplied in powder form as an industrial by-product or other inexpensive material with an alkaline activator which is usually in the form of a concentrated aqueous solution of alkali hydroxide, silicate, carbonate or sulphate. Supplementary cementitious materials like Fly Ash, GGBS, silica fume etc. are available worldwide in plenty. There are number of studies based on the utilization of micro silica in ordinary Portland cement concrete (OPC) as well as geopolymer concrete (GPC). Portland cement is nowadays partially replaced by silica fume, a by-product from silicon alloy factories. Silica fume is a non-metallic and non-hazardous material having very large surface area which is suitable for concrete mix. Previous study shows that the use of silica fume in concrete has improved the performance of concrete in strength as well as in durability aspect. Hence silica fume is a suitable material for concrete as a replacement of cement. This paper reviews the effect of silica fume on ordinary Portland cement (OPC) and geopolymer concrete (GPC) based on the work done by other researchers.Read More
Publication Year: 2017
Publication Date: 2017-01-01
Language: en
Type: review
Access and Citation
Cited By Count: 4
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot