The Urban Metabolism of Cement and Gravel in Taipei and New Taipei City
Kunag-Ly Cheng, Chih-Yu Chang, Pi-cheng Chen, Yi-Shin Wang
Graduate Institute of Environmental Engineering, National Taiwan University
Concrete(cement and gravel) is a high resource consumption and
environmental impact material. There is about third of Taiwanese people living in
Taipei and New Taipei City which induces a huge structure demand(building and
infrastructure). Taipei and New Taipei City extract a massive construction resource
from other cities and produces much construction waste. In additional, the two cities
have a high vacant rate. For urban sustainable development, it should figure out the
urban metabolism of cement and gravel. Thus, it's helpful to provide the advice of
concrete resource plan and management.
In the result, the main consumption prat is buildings construction. Taipei and
New Taipei City stock 220 million tons cement and gravel during 2004~2013 and
generated 447 tons concrete waste every year. It should study forward about the
concrete waste flows(sinks), construction material, construction method and
governance.