Open AccessWaste foundry sand characterization as paving aggregate
Author(s) -
Paulo Paiva Oliveira Leite Dyer,
Silvelene Alessandra Silva,
Luis Miguel Gutiérrez Klinsky,
Gustavo José Lauer Coppio,
Maryangela Geimba de Lima
Publication year - 2021
Publication title -
transportes
Language(s) - English
Resource type - Journals
eISSN - 2237-1346
pISSN - 1415-7713
DOI - 10.14295/transportes.v29i1.2241
Subject(s) - foundry , aggregate (composite) , asphalt , subgrade , engineering , asphalt pavement , civil engineering , geotechnical engineering , waste management , environmental science , materials science , mechanical engineering , composite material
Waste Foundry Sands (WFS) are by-products of the steel industry due to the foundry process. The residual material can be used in civil construction as an aggregate because of its mineral origin. This paper aimed to characterize the WFS obtained at two sources, using laboratory tests that are regularly required in highway engineering specifications. The laboratory program showed that the tests results satisfy the main specifications in Brazil. Laboratory tests results also show that WFS has characteristics that are similar to the manufactured sand that is usually used in asphalt pavement construction. It is concluded that the WFS could be used in asphalt pavement projects, as a subgrade reinforcement, sub-base or base layer and in asphalt wearing courses.