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Patent Searching and Data


Title:
METHOD FOR RECOVERING LIMESTONE MACADAM FROM CONCRETE
Document Type and Number:
Japanese Patent JP2011207647
Kind Code:
A
Abstract:

To provide a method for recovering limestone macadam from concrete which can effectively recover a limestone macadam coarse aggregate used for concrete from concrete at high quality, e.g., in a state close to a state characteristic of original limestone macadam.

The method for recovering limestone macadam from concrete includes a step of applying temperature history to ≥24 cycles in which a temperature difference is ≥75°C, and also, a temperature rising rate is ≥0.44°C/min and a cooling speed is ≥0.67°C/min to concrete of ≤0.44°C/min to concrete of ≤1 m3 using limestone macadam as a coarse aggregate.


Inventors:
KITA TATSUZO
Application Number:
JP2010076026A
Publication Date:
October 20, 2011
Filing Date:
March 29, 2010
Export Citation:
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Assignee:
SUMITOMO OSAKA CEMENT CO LTD
International Classes:
C04B18/16; B02C1/02; B09B3/00; C04B14/02
Attorney, Agent or Firm:
Tamura
Junko Sugimura