Using Fly Ash and Rice Husk Ash as Soil Improving Materials along with its Cost Effectiveness in flexible Pavement Construction

Afaq Ali

doi:10.34259/ijew.19.612490495

Abstract

Using Fly Ash and Rice Husk Ash as Soil Improving Materials along with its Cost Effectiveness in flexible Pavement Construction

Highlights

Civil engineering infrastructure projects located in areas with soft or clay soils need to be improved for the construction purposes
Fly ash is a fine particle obtained from the combustion of pulverized coal and Rice Husk Ash (RHA) is obtained from the milling of rice
In retrospect, when fly ash and RHA were not introduced to construction projects, they were disposed off, which is not environment friendly and cause many diseases

Summary

Introduction

Civil engineering infrastructure projects located in areas with soft or clay soils need to be improved for the construction purposes. Different methods are used to improve the soil properties, i.e. chemical, mechanical or by adding modifiers to soil such as fly ash, cement, lime, RHA etc. Cement and lime were being used for stabilization, but these materials expenses have surged with the passage of time. The use of coal combustion product (fly ash) and agriculture waste (RHA) will certainly lower the cost of construction as well as reducing the environmental hazards they causes. With the application of these kinds of waste materials, there will be no need of materials to buy like cement, lime (which is expensive) and will help the environment clean. Fly ash is a pozzolanic material; pozzolan has siliceous and aluminous properties [14]

Objectives

Methods

Results