Recycling Building Demolition Waste in Hot-Mix Asphaltic Concrete

Solid waste can be defined as the useless and unwanted products in the solid state derived from
the activities of and discarded by society [1 ]. Specific definition from Ministry of Housing and
Local Government that control solid waste management in Malaysia say that solid waste can be
define as any scrap material or other unwanted surplus substance or rejected products arising
from the application of any process, any substance required to be disposed of as being broken,
worn out, contaminated or otherwise spoiled; or any other material that is required by the
authority to be disposed of [2].
Solid waste is one of the three major environmental problems in Malaysia. It plays a significant
role in the ability of Nature to sustain life within its capacity. Currently, over 23,000 tonnes of
waste is produced each day in Malaysia. However, this amount is expected to rise to 30,000
tonnes by the year 2020. The amount of waste generated continues to increase due to the
increasing population and development, and only less than 5% of the waste is being recycled [1].
Apart of solid waste that derived from household and commercial activity, solid waste from
construction also bring significant value to the environmental problem. Research that had been
done by Asian Institute of Technology School of Environment, Resources and Development
shows that 28.34% (including industrial waste) come from construction and demolition (C & D)
waste which produce 1.55 Million Tons per year [4].
At the same time, the sources of natural aggregates are depleted and there is an increasing
demand because of the increased construction and maintenance activity from time to time. At
that point, this project will consist of further research on recycling the aggregate that been obtain
from building demolition waste for asphalt concrete. Tests will be conducted to evaluate the
performance of asphalt concrete made with recycled aggregate to know whether it met all the
requirements of local specifications or not.