Study amount and composition of construction and demolition wastes in the Karaj city
Subject Areas :Mazaher Moeinaddini 1 , Seyed Hassan Mousavi 2 , Saeideh Bigdeloo 3
1 - University of Tehran
2 - University of Tehran
3 -
Keywords: Quantity Composition Construction and Demolition Wastes (CDW) Karaj, waste management,
Abstract :
In Karaj, the large volume of wastes was produced due to the high level of construction activities such as demolition of old buildings and the construction of new buildings. For these reasons, it is necessary to have management system for the construction and demolition wastes (CDW) with environmental protection perspective. Therefore, the main purpose of this research was study amount and composition of CDW in Karaj municipality zones (10 zones) in 2017 with the financial support of Karaj Municipality. In the first step, the amount of CDW was investigated by Karaj waste management organization's statistics. The results show that the Karaj construction sector produces 5973 tons (2186410 tons/years) of CDW every day, which is around 3% of the total amount of total waste generated according to country. Also, the share of per capita construction is 1220 (tons/years) and the maximum CDW generation rate was in the November and December and minimum was in March and April. In the second step, the composition of CDW was determined using by field observations from the disposal sites. The average composition of CDW shows that up to 80% of the waste is soil, sand, stone, asphalt and concrete parts, building materials (such as brick, block, plaster, pottery, mosaic, etc.