This paper presents the results of a research project that focused on evaluating the potential use of processed tear-off shingles in road works. The project was conducted in attempts to promote construction sustainability through recycling more construction wastes into roads. The targeted applications were road base and unpaved gravel roads. Two different sizes of tear-off shingles were investigated: ground shingles with 100% of the particles passing sieve 4.75 mm and processed shingles with a maximum size of 75 mm and 40% passing 4.75 mm. Petrogrpahic examination confirmed that the investigated shingles did not contain asbestos. Five types of granular materials were investigated to determine the type of material that benefits the most from using the shingles. The five types of materials were quarried crushed limestone, crushed natural gravel with 72% crushed particles, and three recycled concrete aggregates (RCA). California Bearing Ratio (CBR) results showed that ground shingles provided better results compared to processed shingles. For the covering abstract of this conference see ITRD number E216597.
Samenvatting