海工高性能混凝土含气量经时变化规律Time-Dependent Compressive Air Content of Marine High Performance Concrete
刘家海,于定勇,李中会
摘要(Abstract):
本文以施工海工高性能混凝土含气量测试结果为基础,针对海工高性能混凝土含气量的经时变化,分析了运距、泵送方式及振捣时间对混凝土含气量的影响,结果表明:含气量在运输过程中,随着运输时长不断增大,含气量的变化与运距或运输时间基本呈线性关系;泵送降低了混凝土的含气量,含气量的变化量,服从正态分布;振捣时间对含气量的影响显著,振动时间越长,含气量损失越大。
关键词(KeyWords): 含气量;经时变化规律;海工高性能混凝土;泵送方式;振捣时间
基金项目(Foundation): 山东省住房与城乡建设厅科技项目(2014QG009);; 山东省交通运输厅科技项目(2013A02-05)资助~~
作者(Author): 刘家海,于定勇,李中会
DOI: 10.16441/j.cnki.hdxb.20150132
参考文献(References):
- [1]Willam Elkey,Doald J Jassen.Concrete Pumping Effects on Entrained Air-Voids[D].Washington:Washington State Transportation Center,1994.
- [2]Tennessee Department of Transportation.Evaluation Of The Changes In Air Content In Concrete Due To Pumping[D].Tennessee:Tennessee Department of Transportation,2003.
- [3]刘艳霞,陈改新,鲁一晖.高频振捣对混凝土含气量和抗冻性的影响[J].建筑材料学报,2009,12(1):76-79.Liu Yanxia,Chen Gaixin,Lu Yihui.Effect of high-frequency vibration on concrete air content and freeze-thaw disabilities[J].Journal of Building Materials,2009,12(1):76-79.
- [4]王卫中,冯忠绪.搅拌速度对新拌混凝土含气量的影响分析[J].混凝土,2007(8):83-88.Wang Weizhong,Feng Zhongwei.Influence of mixing speed on fresh concrete air content[J].Concrete,2007(8):83-88.
- [5]杨钱荣,郭保林,杨全兵.引气混凝土在青岛海湾大桥工程预应力桥梁中的应用研究[J].公路,2009(9):145-150.Yang Qianrong,Guo Baolin,Yang Quanbing.Research and application of air-entrained concrete to prestressed box girder of Qingdao Bay bridge[J].Highway,2009(9):145-150.
- [6]杨钱荣,张树青,杨全兵,等.引气剂对混凝土气泡特征参数的影响[J].同济大学学报(自然科学版),2008(3):374-378.Yang Qianrong,Zhang Shuqing,Yang Quanbing.Effects of airentraining agent on air void parameters of concrete[J].Journal of Tongji University(Natural Science),2008(3):374-378.
- [7]李增军,李青,苗爱英,等.远距离运输泵送混凝土抗冻性的保证措施试验[J].水运工程,2009,436(12):113-115.Li Zengjun,Li Qing,Miao Aiying.Experiment of measures for assuring frost resistance of long-distance pumping concrete[J].Port&Waterway Engineering,2009,436(12):113-115.
- [8]李文伟,陈文耀,刘文彦,等.混凝土芯样抗冻性试验研究[C].成都:中国土木工程学会2006混凝土工程耐久性研究和应用研讨会,2006.Li Wenwei,Chen Wenyao,Liu Wenyan.The Sstudy on the Concrete’s Frost Resistance of the Concrete Core[C].Chengdu:China Civil Engineering Society 2006Symposium on Durability Research and Application of Concrete Engineering,2006.
- [9]陈建奎.混凝土外加剂的原理与应用[M].北京:中国计划出版社,1997.Chen Jiankui.Principle and Application of Concrete Admixture[M].Beijing:China Planning Press,1997.
文章评论(Comment):
|
||||||||||||||||||
|
||||||||||||||||||