Abstract
Protecting the pavement subgrade to increase the service life of road pavements is an aspect currently being explored. Several alternative pavement subbase materials are being considered, including Lightweight Cellular Concrete (LCC). Due to its lower weight, LCC incorporating industrial by-product, making it sustainable, and ease of use amongst other benefits, is seen as a potential candidate. This paper reports reviewing the potential application of LCC within the pavement structure with a specific application as a subbase. It examines the various properties such as modulus of elasticity, compressive and tensile strength, Water absorption, and freeze-thaw resistance necessary for pavement application. It also assesses its use in the field in Canada considering the design methods utilized. Some limitations and gaps for LCC application in pavements are also established and recommendations on how to further its use and performance. This review concludes that LCC possesses potential as a pavement subbase alternative; however, other mechanical properties like LCC’s fatigue life is essential. A comparative field study is also recommended to monitor actual performance and various factors on performance.
Highlights
Due to advancements in technology and changing climatic conditions, pavement materials are evolving as material property is one of the factors to affect pavement deterioration [1]
While introducing lightweight cellular concrete's mechanical properties relevant for pavement applications, this paper considers field construction and limited performance in pavements
Even though the application of lightweight cellular concrete has been mentioned in a few studies, the installation and construction method in the field is limited, especially in road pavement applications
Summary
Due to advancements in technology and changing climatic conditions, pavement materials are evolving as material property is one of the factors to affect pavement deterioration [1]. A significant challenge with road pavements in the Canadian climate is frequent repairs associated with road pavements over frost susceptible and weak subgrades caused by frost and rapid temperature variations and the presence of organic material along road pathways [2]. These repairs are expensive, disruptive, and not sustainable, especially in virgin material and excess waste generation. This review studies the use of LCC within the pavement structure in Canada It examines LCC's current properties, advantages, and potential benefits within the pavement structure as a subbase layer. This paper further proposes practices and necessary steps to improve LCC application within the pavement structure
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
