Abstract
Roads are major consumers of aggregate and the influence of aggregate cost is more in total construction cost of the roads. In order to reduce the cost of construction of roads, the possibility of using building waste as aggregate in subbase and base course has been studied. Experimental studies were carried out to determine the engineering properties of the recycled aggregate and compared with conventional aggregate. It has been observed that the building debris can be effectively used as road material as it is satisfying the MoRTH (ministry of road transport&highways) requirements. Brick aggregate was found to be relatively soft compared with other recycled aggregate which may be used as sub-base course.
Highlights
Aggregate generated from quarries, produce number of environmental problems like noise and dust pollutions (Gopala Raju et al, 2007)
The waste collected from various sources has been tested for their properties such as specific gravity, water
Based on the experimental results obtained, the following conclusions are drawn: Crushed concrete can be effectively used as a road material in different layers as the properties satisfying the MoRTH requirements
Summary
Aggregate generated from quarries, produce number of environmental problems like noise and dust pollutions (Gopala Raju et al, 2007). The availability of landfill sites for disposal of waste has been drastically decreased over the past 15 years due to strong environmental lobby (Berendsen, 1997). With the Identification of different types of building debris limited supply of landfill sites and great demand for waste disposal, the cost of dumping of waste has been increased in recent times. Use of recycled aggregate from building waste as base course and sub-base course has been studied in order to reduce the material transport cost and disposal cost.
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