太原滨河小区高层住宅现浇混凝土楼板裂缝的预防及治理.pdf

中文摘要太原滨河小区高层住宅现浇混凝土楼板裂缝的预防及治理中文摘要随着现在高层建筑的迅猛发展,商品混凝土和泵送技术的广泛应用,施工工期大大缩短的情况下,现浇楼扳不同程度的出现了裂缝,这种裂缝常常引起楼板渗漏、钢筋腐蚀、混凝七碳化等现象。本文针对现浇楼板裂缝,着重进行了原因分析和施工的预防及治理。楼板裂缝重在预防。本文以太原滨河小区高层建筑为背景,重点从设计控制,材料控制, 施工技术及施工管理方面进行了分析比较,尤其是对如何控制钢筋保护层;如何科学合理地安排施工工期和工序穿插等施工技术的改进进行了探讨;重点讨论了怎样加强混凝土养护,及防止吊料区超载等管理措施。在实际工程中实践表明, 这些方法与措施对混凝土楼板裂缝的预防起到了良好的效果。最后本文对出现的楼板裂缝的处理进行了阐述,根据工程实际情况与条件,采用简单、易学的YJ 。关键词:裂缝、材料控制、施工控制、裂缝的处理、自动压力灌浆 Prevention and Treatment -Situs Concrete Floorslab Cracks ofHigh—Rise Buildings oftheResidential Quarters ofTaiyuan Binhe Small District ABSTRACT Along with therapid development ofhigh—rise buildings,the wide application of ready—modity concrete,and pumping technique,and the requirement of short time limit for aproject,cracks varying degrees have appeared cast-in -sinus concrete floorslabs,which usually cause defects such as leakage,reinforcing steelbar corrosion,and concrete carbonization. This paper stresses theimportance of the analysis ofcauses,prevention in construction,and treatment of concrete accordance with cast—in—situsconcrete The focal point,of work infloorslab cracks centers paper takes the hilgh-rise buildings ofTaiyuan Binhe Small District for background and focuses discussion on the control ofdesign,the control ofmaterial,construction technology and construction management byanalyzing paring them,especially on how control reinforcing barprotective layer,and how to scientifically and rationally arrange the time limit for aproject and working procedures turn,and the improvement addition,this paper puts stress on the discussion about construction management,such as concrete curing,prevention f overloading hoisting or ting an introduction made concrete floorslab crak treatment measures,especially tothe simple andeasy—learn YJ automatic pressure grouting technique according toactualand concrete conditions of theconstruction ofproject. Key words:crack;control ofmaterial;cracks treatment;