曲阜市圣水苑小区冬季混凝土施工质量控制

青岛理工大学毕业论文题目：曲阜市圣水苑小区冬季混凝土施工质量控制学生姓名：范海东学生学号：201273094院系名称：土建工程系专业班级：监理124指导教师：安庆锋2015年6月12日青岛理工大学毕业论文I摘要近年来,我国的经济一直都处在高速发展阶段,在这个时期,我国的城市化进程也非常明显,在全国范围内基础设施建设项目数量在不断增多,在我国的北方地区,冬季的时间相对比较长,在建筑施工方面要面临的问题非常多,其中对建筑工程质量影响最重要的是混凝土的施工质量问题。冬季混凝土浇筑面临的问题非常多,一直也是北方地区建筑施工发展要解决的重要问题。在寒冷的季节,对混凝土施工质量进行控制一定要提出新的思路和指导措施,在施工质量方面进行提高,促进建筑行业更好的发展。为了保证混凝土冬季施工质量，探讨了混凝土冬季施工的基本原理，从原材料选择与配比、混凝土拌和、运输、浇筑、养护和测温等方面分析了混凝土在冬季施工中质量控制的预防措施。本课题的研究将为寒冷地区冬季混凝土施工质量的保证，提供新的思路和工程应用指导意义。最后，本文结合豪成绿苑工程实例，提出了从施工流程角度出发，包括严格的原材料选择、合理的配合比设计、适宜的养护方法、必要的温度控制，以及严密的现场管理等方面一套相应的混凝土冬季施工方案。综上所述，寒冷地区冬季混凝土施工质量控制，对缩短冬季施工工期，加快工程建设进程，尽早发挥工程投资效益能够起到积极的促进作用，也将对冬季混凝土施工的改进方法起到一定的参考作用和现实指导意。关键字：冬季施工；工艺方法；混凝土养护青岛理工大学毕业论文IIAbstractInrecentyears,ourcountry'seconomyhasbeeninahigh-speeddevelopmentstage,duringthisperiod,China'surbanizationprocessisalsoveryobvious,infrastructureconstructionprojectsacrossthecountryinagrowingnumberofnorthinChina,thewintertimeisrelativelylong,intheaspectofconstructionfacesthequestionverymuch,affectconstructionqualitythemostimportantofwhichistheconstructionqualityofconcreteproblems.Winterconcretepouringarefacedwiththeproblemverymuch,hasbeendevelopingandnorthernregionconstructiontosolveanimportantproblem.Inthecoldseason,tocontrolconcreteconstructionqualitymustbeputforwardnewideasandmeasurestoguide,onhowtoincreasetheconstructionquality,promotethedevelopmentofconstructionindustrybetter.Thistopicresearchwillprovidethecoldregioninwinterconcreteconstructionqualityassurance,providesnewtrainofthoughtandtheengineeringapplication.Finally,thispapercombinedwithxianxuefamilyvillagevillageresettlementprojectengineeringexample,putforwardfromtheAngleoftheconstructionprocess,includingstrictrawmaterialselection,rationalmixtureratiodesign,suitablemaintenancemethod,thenecessarytemperaturecontrol,andrigorouson-sitemanagementandsoonasetofcorrespondingconcretewinterconstructionplan.Tosumup,coldareainwinterconcreteconstructionqualitycontrol,toshortenthewinterconstructiontimelimitforaproject,tospeeduptheprocessofengineeringconstruction,theengineeringinvestmentbenefitsasearlyaspossiblecanplayapositiveroleinpromoting,willalsobeonthewinterconcreteconstructionimprovementmethodsplayaroleofreferenceandpracticalguidancemeaning.Keywords:winterconstruction;Processmethod;Concretecuring青岛理工大学毕业论文I目录摘要································IAbstract··································II第1章绪论····························11.1选题背景及研究意义······················11.1.1选题背景························11.1.2研究意义························11.2研究目的及内容························21.2.1研究目的························21.2.2研究内容························2第2章冬季混凝土施工分析······················32.1混凝土概述··························32.1.1定义及分类·······················32.1.2混凝土的发展方向····················32.1.3混凝土外加剂······················52.2冬季混凝土工程施工的一般原理·················62.3冬季混凝土工程施工的要求及需解决的问题············72.4冬季混凝土施工的具体工艺方法·················82.4.1调整配合比方法·····················82.4.2蓄热法·························92.4.3外部加热法·······················92.4.4抗冻外加剂法·····················102.5本章小结··························13第3章冬季施工质量控制措施分析··················153.1抗冻混凝土的配合比设计···················153.2冬季施工措施························153.3冬季施工养护措施······················163.3.1综合养护·······················163.4冬期混凝土施工管理要点···················173.4.1材料要求·······················173.4.2混凝土受冻临界强度规定················17青岛理工大学毕业论文II3.4.3混凝土原材料的加热··················183.4.4混凝土的搅拌、运输、浇筑···············183.4.5冬期施工防冻剂的掺量及控制··············183.4.6混凝土试块留置····················193.4.7拆除保温材料时间···················193.4.8混凝土质量检查····················193.4.9温度检测·······················193.5本章小结··························20第4章曲阜市圣水苑小区A3#楼工程冬季施工方案···········214.1工程概况和方案编制依据···················214.1.1工程概况·······················214.1.2编制依据·······················214.2冬季施工准备工作······················224.2.1组织准备·······················224.2.2施工准备·······················234.3冬期施工技术措施······················244.3.1钢筋工程·······················244.3.2模板工程·······················254.3.3混凝土工程······················264.3.4地面工程·······················284.3.5屋面工程·······················294.4混凝土防冻养护措施····················294.4.1混凝土试块留置····················294.4.2混凝土的养护·····················294.4.3混凝土的测温·····················314.4.4混凝土的质量检查···················324.5消防安全措施························344.6本章小结·························35第5章结论与展望·························365.1结论····························365.2展望····························36致谢·······························38参考文献····························39青岛理工大学毕业论文1第1章绪论1.1选题背景及研究意义1.1.1选题背景随着我国经济的发展，城市的变化是日益可见，建筑业成为城市发展的重要行业之一。在全国建设规模持续增长的大环境下，尤其在我国冬季气温异常寒冷的北部地区，为满足工程进度的需要，必须在冬季进行混凝土工程的施工。其中特别是因为过低的温度造成混凝土现浇构件的早期冻害，极大的降低了工程的安全性和耐久性，一些地区的城市建设也因为寒冷的冬季而不得进行施工，严重的阻碍了建设步伐，加长了工期，增加了资金和管理成本，延长了投资回收期和降低了规避宏观风险的能力，造成了资金周转率的降低和施工费用的大幅增加。除此之外，长时间的持续负低温、大温差、降雪以及反复的冰冻，亦经常造成建筑施工的质量事故。据资料分析，混凝土工程有大部分的工程质量事故都发生在冬季。混凝土在饱水状态下因冻融循环产生的破坏作用称为混凝土冻融破坏，混凝土的抗冻耐久性(简称抗冻性)是指饱水混凝土抵抗冻融循环作用的性能。混凝土处于饱水状态和冻融循环交替作用是发生混凝土冻融破坏的必要条件。在我国的东北、华北西北地区的水工大坝，尤其是东北严寒地区的混凝土结构物，几乎100%的工程局部或大面积地遭受不同程度冻融破坏，如丰满坝、云峰坝、参窝坝等，有的工程在施工过程中或竣工后不久即发