In June 2003, a new technology for making cement from waste concrete was successfully developed by Japan.
 This new technology was jointly developed by the Japan Cement Association and the University of Tokyo. It is a technology that uses waste concrete to produce cement and sand so that used concrete can be recycled. The cement produced by this method has the same quality as the cement produced using the new material.
The production of this technology will help solve the problem of concrete waste while also saving natural resources.
 This new technology was jointly developed by the Japan Cement Association and the University of Tokyo. It is a technology that uses waste concrete to produce cement and sand so that used concrete can be recycled. The cement produced by this method has the same quality as the cement produced using the new material.
The production of this technology will help solve the problem of concrete waste while also saving natural resources.
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