焦炭塔基础混凝土裂缝控制技术
Cracking Control Technique for Concrete Foundation of Coke Tower
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- DOI:
- 作者:
- 龙永新
LONG Yong-xin
- 作者单位:
- 中国石油天然气第六建设公司, 广西桂林 541004
PetroChina No.6 Construction Co.,Guilin 541004,China
- 关键词:
- 大体积混凝土;裂缝;降温;测温;养护
large volume concrete;crack;temperatu rereducing;temperatu remeasuring;curing
- 摘要:
- 焦炭塔类大型设备基础在施工过程中要求混凝土-次成型,不得留置施工缝,因此混凝土-次浇筑量较大,这种大体积混凝土的浇筑极易出现裂缝,如果不加以控制,会产生严重的隐患。文章对焦炭塔基础混凝土水化热的计算和大体积混凝土施工中的主要技术难点进行了简要的阐述,提出了混凝土配合比设计、材料选用,以及混凝土浇筑、降温及测温养护的-些可供借鉴的方法。
Foundation constructions of large scale facilities such as coke to Werare often met in petrochemicalengineering projects. In such construction, concrete foundation needs be formed in one time to avoid con-struction slots, so that the concrete volume poured in one time is large. With such construction method, thelarge volume concrete foundation is easy to produces lots of cracks, and it would cause severe hidden troubleif cracking control measures were not taken during the foundation construction. This paper introduces brieflythe hydration heat calculation of coke tower concrete foundation and key technical matters in large volumeconcrete construction, brings forward some cracking control methods regarding concrete proportion design,material selection, concrete placement, curing with temperature reducing and measuring, which can be refer-enced for other construction projects with large volume concrete.2010,2(2): 72-74 收稿日期：2009-2-10分类号：TU755作者简介：龙永新(1968- ),男，湖北鄂州人，高级工程师，1989午毕业于长江大学(原江汉石油学院)工业与民用建筑专业，长期从事大型石油化工工程的施工技术管理工作参考文献：
王铁梦.工程结构裂缝控制[M].北京:中国建材工业出版社, 2002