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Al-Bahir Journal for Engineering and Pure Sciences

Abstract

Soil stabilization is one of the processes that have used widely to enhance pavement structure. Using natural and man-made resources as efficiently as possible while inflicting little environmental harm is known as sustainable roadway building. Reducing energy consumption during construction and making optimal use of materials to reduce waste are two approaches to make roads more sustainable. This project work is concern in chemical soil stabilization with a waste or by-product material. The experiential work included improve sandy soil by using Paper Waste Ash (PWA) and ordinary Portland cement (OPC). laboratory tests included sieve analysis, standard proctor compaction test, California Bearing Ratio Test, Atterberg Limits and Compressive Strength test to determine soil properties. The results showed that mixing of PWA and cement can improve compressive strength of subgrade, reduce pavement layers’ thicknesses and then reduce the total cost of construction. It concluded that using (PWA) reduce the impact on natural materials, landfill and preserve the environment by rotate rubbish and used it instead of cement or other additives in stabilization of unbound pavement layers.

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