超高层建筑高强自密实混凝土性能研究
摘要：西安荣民金融中心工程结合设计与施工特点，采用高强自密实混凝土浇筑核心筒剪力墙及桁架楼承板。基于原材料选择、配合比设计、施工质量控制等，对高强自密实混凝土性能与实际应用进行研究。研究结果表明，应将现场养护试件抗压强度作为施工参考依据；高强自密实混凝土具有良好的抗氯离子渗透性能；高强自密实混凝土早期收缩试验结果可作为现场施工参考依据。
关键词：高层建筑混凝土自密实配合比力学性能
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[2] 冯乃谦，叶浩文，马展祥.超高性能自密实混凝土的研发与超高泵送技术[J].施工技术，2018,47(6):117-122.
[3] 马永炯，乔红霞，洪芬，等.不同因素下混凝土早期抗裂性能试验研究[J].施工技术，2020,49(9):54-57,70.
[4] 焦晓光，乔宏霞，路承功，等.高强超高层泵送混凝土配合比设计研究[J].混凝土，2017(6):111-114.
[5] 肖三保.胶凝材料用量对新拌自密实混凝土性能的影响[J].江西建材，2014(2):12-13.
[6] 于庆波，田彬，滕洪园，等.液压爬模施工技术在超高层建筑中的应用[J].施工技术，2021,50(2):56-59.
[7] 赵文兰.高性能自密实混凝土的力学性能研究[D].郑州：郑州大学，2005.
[8] 李苏盐.超高层钢板-混凝土墙结构中裂缝测试分析及防治对策研究[D].天津：天津大学，2014.
[9] YUN L,YI S T,KIM M S,et al.Evaluation of a basic creep model with respect to autogenous shrinkage[J].Cement and concrete research,2006,36(7):1268-1278.
[10] HOLT E.Contribution of mixture design to chemical and autogenous shrinkage of concrete at early ages [J].Cement and concrete research,2005,35(3):464-472.
Research on High Strength Self-compacting Concrete Performance for Super High-rise Buildings
Abstract: Based on the project of Xi'an Rongmin Financial Center, high strength self-compacting concrete is adopted to pour core tube shear walls and truss floors bearing plates according to the characteristics of engineering design and construction. Based on the selection of materials, mix proportion design and construction quality control, the performance and practical application of high strength self-compacting concrete are studied. The research results show that the compressive strength of the on-site curing specimen should be used as the reference for construction. High strength self-compacting concrete has good resistance to chloride ion penetration. The early shrinkage test results of high strength self-compacting concrete can be used as reference for site construction.
Keywords: tall buildings; concrete; self-compacting; mix proportion; mechanical properties
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