水利水电科技进展
水利水電科技進展
수이수전과기진전
ADVANCES IN SCIENCE AND TECHNOLOGY OF WATER RESOURCES
2013年
4期
89-94
,共6页
严寒地区%大体积混凝土%低温施工措施%暖棚法%蓄热法
嚴寒地區%大體積混凝土%低溫施工措施%暖棚法%蓄熱法
엄한지구%대체적혼응토%저온시공조시%난붕법%축열법
cold region%mass concrete%construction measure in low temperature%tent heating method%thermos method
详述了我国东北、西北、西藏等严寒地区在低温环境中进行骨料准备、混凝土运输、混凝土浇筑、混凝土养护时采取的具体施工措施，介绍了前苏联和北美一些国家的大体积混凝土冬季施工方法。工程实践表明，合理选择温控标准，严格控制热量损失，使用暖棚法与综合蓄热法相结合的浇筑方法，采用新型材料加强混凝土表面养护等施工措施可以使在低温环境中施工的混凝土较好地发育，保证施工质量达到设计标准。
詳述瞭我國東北、西北、西藏等嚴寒地區在低溫環境中進行骨料準備、混凝土運輸、混凝土澆築、混凝土養護時採取的具體施工措施，介紹瞭前囌聯和北美一些國傢的大體積混凝土鼕季施工方法。工程實踐錶明，閤理選擇溫控標準，嚴格控製熱量損失，使用暖棚法與綜閤蓄熱法相結閤的澆築方法，採用新型材料加彊混凝土錶麵養護等施工措施可以使在低溫環境中施工的混凝土較好地髮育，保證施工質量達到設計標準。
상술료아국동북、서북、서장등엄한지구재저온배경중진행골료준비、혼응토운수、혼응토요축、혼응토양호시채취적구체시공조시，개소료전소련화북미일사국가적대체적혼응토동계시공방법。공정실천표명，합리선택온공표준，엄격공제열량손실，사용난붕법여종합축열법상결합적요축방법，채용신형재료가강혼응토표면양호등시공조시가이사재저온배경중시공적혼응토교호지발육，보증시공질량체도설계표준。
Specific construction measures in low temperature for water conservancy and hydropower projects in the cold regions of Northeast China, Northwest China and China's Tibet are introduced, such as aggregate preparation, concrete transportation, concrete pouring and concrete curing. The winter construction methods for mass concrete in the former Soviet Union and some countries in North America are also involved. The engineering practices show that the following construction measures can make the concrete in low temperature satisfactorily grow and the construction quality achieves the design criteria: rational selection of temperature control standards, severe restriction of heat loss, combined grouting procedures of tent heating method and comprehensive thermos method, and utilization of new materials to strengthen the surface curing of concrete.
