Alternatives to Cement in Concrete - A Review [ READ ]
Atishay Lahri, Dr. Savita Dixit
In the present world, concrete has become a vital part of our lives. With each passing day, the use of concrete is increasing at a very high rate. One of the main constituents of concrete is Portland cement. With the increase in use of concrete, the manufacturing and consumption of cement has increased drastically. Although cement has exceptional binding properties and is very suitable for use in concrete, the manufacturing of cement results in emission of large amounts of CO2. Due to this, researchers have started finding alternatives to cement that are economical as well as environment friendly. Fly ash, Silica Fume, Metakaolin and Ground granulated blast furnace slag are industrial by-products which provide excellent binding properties to concrete and serve as a replacement of cement. These alternatives are generally termed as Supplementary cementitious materials (SCMs). The use of these materials not only helps in reducing the consumption of cement but also serves as an efficient method for their safe disposal. This paper reviews the effect of using the various alternatives that can be used in concrete as partial replacement of cement. The literature review of various researchers reveals that a single alternative cannot provide all the benefits that cement does. Rather, a suitable combination of these products can be incorporated in concrete to provide properties similar to or better than that of Portland cement concrete.
Atishay Lahri, Dr. Savita Dixit
In the present world, concrete has become a vital part of our lives. With each passing day, the use of concrete is increasing at a very high rate. One of the main constituents of concrete is Portland cement. With the increase in use of concrete, the manufacturing and consumption of cement has increased drastically. Although cement has exceptional binding properties and is very suitable for use in concrete, the manufacturing of cement results in emission of large amounts of CO2. Due to this, researchers have started finding alternatives to cement that are economical as well as environment friendly. Fly ash, Silica Fume, Metakaolin and Ground granulated blast furnace slag are industrial by-products which provide excellent binding properties to concrete and serve as a replacement of cement. These alternatives are generally termed as Supplementary cementitious materials (SCMs). The use of these materials not only helps in reducing the consumption of cement but also serves as an efficient method for their safe disposal. This paper reviews the effect of using the various alternatives that can be used in concrete as partial replacement of cement. The literature review of various researchers reveals that a single alternative cannot provide all the benefits that cement does. Rather, a suitable combination of these products can be incorporated in concrete to provide properties similar to or better than that of Portland cement concrete.
