Resource Recycling in Concrete: Present and Future

  • Takafumi Noguchi
Part of the cSUR-UT Series: Library for Sustainable Urban Regeneration book series (LSUR, volume 4)

According to a White Paper on the Environment (Ministry of the Environment (2003)), the total material input of Japan ranged from 2.0 to 2.2 billion tons annually in recent years, of which 1.0 to 1.1 billion tons (50 percent) were accumulated every year in the form of buildings and civil structures as shown in Fig. 13–1(a), which indicates the enormous consumption of resources by the construction industry compared with other industries. The production of concrete, a primary construction material for forming the infrastructure of modern nations, amounted to approximately 500 million tons (217.4 million cubic meters volume, converted by assuming the density to be 2.3) in 2000 in Japan, accounting for nearly 50 percent of the annual resource consumption of the construction industry as shown in Fig. 13–1(b). In other words, concrete accounts for nearly 25 percent of Japan's total material input. Incidentally, the construction industry's 2001 consumption of steel and wood, two other primary construction materials, amounted to 32,530,000 and 17,000 t (4,170,000 and 34,000 merted by assuming the density to be 7.8 and 0.5), respectively, both far less than concrete consumption

Furthermore, the amount of waste in Japan totaled approximately 458,360,000 t in 2000 (general waste: 52,360,000 t; industrial waste: 406,000,000 t) as shown in Fig. 13–2(a) (Ministry of Land, Infrastructure and Transport (2002)). Waste from construction accounted for approximately 20 percent (79,000,000 t) of total industrial waste. Moreover, in 2000, construction waste accounted for nearly 30 percent (12,800,000 t) of the 45,000,000 t of industrial waste destined for final disposal sites and approximately 60 percent (241,000 t) of the 400,000 t of illegally dumped industrial waste. As concrete lumps account for approximately 42 percent (35,000,000 t) of total construction waste as shown in Fig. 13–2(b), approximately 8 percent of total waste in Japan therefore consists of concrete lumps


Blast Furnace Slag Recycle Aggregate Recyclable Concrete Construction Waste Recycle Product 
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Copyright information

© Springer Science+Business Media 2009

Authors and Affiliations

  • Takafumi Noguchi
    • 1
  1. 1.Department of ArchitectureThe University of TokyoBunkyo-kuJapan

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