New plant will recycle used slag to make concrete.
By Jessica Cheam
SINGAPORE'S building industry is taking steps to green itself, with the opening on Wednesday of a new plant which will recycle used copper slag to make concrete.
The plant by Geocycle Singapore can process 360,000 tonnes of collected copper slag from local shipyards, which will be a substitute for sand in making ready-mixed concrete.
The Sungei Kadut facility will also function as a research and development centre for alternative and eco-friendly building materials.
It is a joint venture firm by cement maker Holcim Singapore and local recycling firm ecoWise, which have equal stakes.
[Okay. sounds like a good idea. Helps solve the sand shortage. BUT... isn't copper a good conductor of electricity, and isn't Singapore prone to heavy thunderstorms with lots of lightning strikes?
So houses built with copper-sand - can they do without lightning rods? What happens when the house is struck by lightning? Will the house become a "Faraday cage" and block phone signals?]