常年高寒冻土地区青藏铁路特殊混凝土技术及应用

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Abstract Research purposes:The technology for the common concrete has been applied widely，but construction of the Qinghai—Tibet Railway in Naqu needed the especial concrete about 550000 m3．As Naqu is high cold area，there was no matching ratio of especial concrete for it，SO the construction diamond could not be met．In order to ensure the construction quality of Qinghai—Tibet Railway，the research was done on the especial concrete for meeting the diamond of construction of Qinghai—Tibet Railway in permafrost re,on．

Research conclusions: By doing the research，the especial concrete for the railway in permafrost region Was developed，which provided the good foundation for the similar works．The applicable result showed this especial concrete could meet the construction diamond and the applicable requirement．

Key words： permafrost region technology for especial concrete research application

Received: 13 March 2009

PACS:

TU752

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2009/V26/I7/98