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Title:
LOW ACTIVATION CEMENT MATERIAL FOR PROTECTIVE WALL OF NUCLEAR POWER PLANT, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/043881
Kind Code:
A1
Abstract:
The present invention relates to a low activation cement material for a protective wall of a nuclear power plant having excellent low activation characteristics by minimizing the contents of europium (Eu) and cobalt (Co) which are main components activated by neutrons in cement, and a manufacturing method therefor. The low activation cement material of the present invention is produced by pulverizing, together with gypsum, a clinker made by mixing 79 to 81% by weight of limestone, 12 to 18% by weight of a clay raw material, 2 to 5% by weight of a ladle slag, and the remainder comprising silica, and is characterized in that the contents of Co and Eu are 7 ppm and 0.5 ppm or less, respectively.

Inventors:
SHIN DONGIK (KR)
LEE BINNA (KR)
MIN JIYOUNG (KR)
LEE JANGHWA (KR)
LEE JONGSUK (KR)
HAN SANGMOOK (KR)
Application Number:
PCT/KR2016/010083
Publication Date:
March 16, 2017
Filing Date:
September 08, 2016
Export Citation:
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Assignee:
POS CERAM CO LTD (KR)
KOREA INST CIVIL ENGINEERING & BUILDING TECHNOLOGY (KR)
GS ENGINEERING & CONSTR CORP (KR)
International Classes:
C04B7/00; C04B7/04; C04B7/14; C04B7/34; C04B7/44
Domestic Patent References:
WO2008114877A12008-09-25
Foreign References:
JP2008239362A2008-10-09
JP2008013426A2008-01-24
JP2007269516A2007-10-18
Other References:
MIN, JI YEONG ET AL.: "Construction Materials for Improving the Neutron Shielding Performance: Industrial By-products", JOURNAL OF THE KOREA CONCRETE INSTITUTE, May 2014 (2014-05-01), pages 475 - 476
Attorney, Agent or Firm:
OH, Wihwan (KR)
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