Fly Ash Concrete Pavement

Abstract

The use of fly ash in concrete as a partial replacement for cement has become very important today, primarily due to its improved long-term durability and environmental benefits. Technical improvements in the operation of thermal power plants and fly ash collection systems have improved fly ash consistency. In developed countries, the use of mineral additives such as fly ash, silica fume and rice husk ash has already been established in the production of concrete. This includes large commercial applications for adding or replacing cement. In India, many alternatives have already been programmed and introduced with the introduction of ready mixed concrete, and recently the process has been accelerated to impact the construction economy. The purpose of this experimental study is to investigate physical, chemical and mechanical properties of fly ash cement concrete for road construction. Studies have observed that the use of 30% fly ash and 70% cement provides excellent performance. In addition, the use of fly ash in construction can help reduce material costs and greenhouse gas emissions. High-strength concrete can be manufactured and admixtures or alternatives can be incorporated to improve the properties of the concrete. About 7% of carbon dioxide is released into the environment for each ton of cement produced. Coal is used as a fuel in many industries, including power plants. This produces large amount of coal ash, which makes disposal very difficult and causes environmental pollution. Therefore, the production of cement and electricity leads to a large amount of carbon dioxide emissions and coal ash generation, causing environmental pollution. Fly ash contains reactive and non-reactive crystalline substances. Reactive component reacts with lime to provide hydrated minerals and give them strength. Non- reactive components give concrete a packing effect, filling pores and increasing strength. Here, we are trying to make effective use of this pollutant by using it in concrete.