A study on the suitability of solid waste materials in pavement construction: A review
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International Journal of Pavement Research and Technology Journal homepage: www.springer.com/42947
A study on the suitability of solid waste materials in pavement construction: A review T.B. Vishnu*, Kh. Lakshman Singh Department of Civil Engineering, National Institute of Technology, Silchar, Assam 788010, India Received 19 October 2019; received in revised form 10 November2020; accepted 10 November 2020
Abstract
This paper describes the various ways in which huge volumes of waste formed from urban and semi-urban areas can be optimally reutilized as an additive in the construction of bituminous pavements. It shows that different waste materials like scrap tyres, pl astic wastes, glass, coal waste, fly ash, concrete waste, wood waste, etc. can be effectively reused in bituminous pavement construction. In countries like India, wast e derived from various sources is usually incinerated, open burned, dumped into water bodies, disposed through landfills or ground, and discharged to sewers. This shows the potential of waste being used as a construction material in pavement development in developing nations like India where consumption is mor e and the availability of space for disposal is less. Moreover, the need for effective energy utilization and global climate change have made it mandatory to r educe pollution and increase recycling and re-use. Hence, to satisfy environmental norms, such practices need to be introduced into civil engineering situations.This work evaluates the various application of solid waste in sustainable pavement engineering and reviews the existing works on the re -utilization of solid wastes as road construction material and their sustainability. Life cycle assesement (LCA) was conducted to evaluate the environmental impact of solid waste as a construction material. The principal findings of this study reveal that solid waste obtained from various sources could be effectively incorporated into construction materials in the forms of aggregate, reinforcement fiber, filler material, additive etc. In summary, the study guides us in adopting st able and eco-friendly choices of converting the wastes into superior environmentally friendly road construction materials. In addition to being a lesser burden to the environment, this practice provides a satisfactory enhancement in the strength and durability of the pavements and also helps reduce energy and overall cost thereby proving to be a very useful and effective choice for all pavement related works. Keywords: Bituminous pavement; Sustainability; Solid waste; Incineration; Landfills; Sewers
Introduction Urbanization and a rapid incline in human living standards are the major two reasons for the high volume of waste generation and disposal problems. There are human actions behind material manufacturing and post usage that culminates in waste generation. Most of these generated wastes are mainly managed by disposal in landfills. Nevertheless, high cost and huge land consumptions are the major drawbacks to this kind of waste management. The huge so
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