<P>PROBLEM TO BE SOLVED: To make use of heavyweight concrete containing baryte, to reduce disposal cost in disposal of a balance weight for construction equipment discarded, to recycle the discharged waste material, and to provide a heavyweight material suitable for construction groundwork. ??<P>SOLUTION: The heavyweight material for construction groundwork comprises debris of heavyweight concrete containing baryte. Debris of waste heavyweight concrete recovered from a balance weight for construction equipment discarded can be used, the bulk specific gravity of the debris is regulated to ≥2.0, and the debris can be utilized as a heavyweight banking material, etc. The material for construction groundwork can be used to prevent an underwater structure or an underground structure from rising. When such a heavyweight material for construction groundwork is supplied, a mixture of debris of various waste heavyweight concretes containing baryte recovered from balance weights for various construction equipments discarded is subjected to quality regulation as usage under uniform management so as to obtain a material of stable quality fit for its use and purpose, and this material is supplied. ??<P>COPYRIGHT: (C)2010,JPO&INPIT ??
