苏州混凝土水泥制品研究院有限公司

头部文案

发布时间:2020-01-06 00:00:00
全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊(光盘版)全文收录期刊
华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊
超高强高性能混凝土的配制研究
Research on Preparation of Ultra High Strength Concrete
2013年第11期
微珠;沸石粉;超高强混凝土;抗压强度;自收缩
Microsphere; Zeolite powder; Ultra high strength concrete; Compressive strength; Autogenous shrinkage
2013年第11期
1000-4637(2013)11-18-05
中建股份科技资助(CSCEC-2013-Z-31)
王 军,程宝军,贾丽莉,刘 通
中建商品混凝土有限公司,武汉 430074

王 军,程宝军,贾丽莉,刘 通

浏览量:
1000
摘 要:研究了复合水泥粉体压实体空隙率的变化规律,优化了混凝土胶材组分,并研究了胶料总量、水胶比对超高强混凝土工作性能和抗压强度的影响。在以上研究基础上,开展了沸石粉配制超高强高性能混凝土的试验研究。结果表明,微珠掺22%,硅灰掺8%,复合粉体空隙率最低,堆积密度最大;胶凝材料总量700kg/m3,水胶比0.16时,混凝土抗压强度最高,60d和90d抗压强度分别达146.5MPa和159.7MPa;掺4%沸石粉配制的超高强混凝土60d和90d抗压强度分别为136.7MPa和148.1MPa,比不掺沸石粉的混凝土抗压强度分别降低约4.7%和6.0%,降幅较小;混凝土3d和7d自收缩值分别为万分之0.91和万分之1.82,比不掺沸石粉的混凝土分别降低约21.6%和11.7%,降低混凝土的自收缩作用明显。 Abstract: The compacting voidage of composite powder pressure entities is studied, and the components of concrete cementing materials are optimized, and the influences of cementing material content, water binder ratio on the working performance and compressive strength of the ultra high strength concrete are researched. Based on the above study, the experimental study on preparation of ultra high strength concrete by zeolite powder is carried out. The results show that when the content of microsphere and silica fume are 22% and 8% separately, the system of microsphere-silica fume-cement composite achieves the densest packing density. When the total amount of cementitious material is 700kg/m3, and the water-cement ratio is 0.16, the compressive strength of concrete curing for 60d and 90d are 146.5MPa and 159.7MPa respectively. When adding with 4% zeolite powder, the compressive strength of concrete curing for60d and 90d are 136.7MPa and 148.1MPa respectively, with a smaller decline of 4.7% and 6.0% compared with concrete without zeolite powder. At the same time, the experimental results show that the autogenous shrinkage of concrete added with 4% zeolite powder curing for 3d and 7d are 91ppm and 182ppm respectively, reduced by 21.6% and 11.7% than concrete without zeolite powder, which significantly reduced the autogenous shrinkage of concrete.
英文名 : Research on Preparation of Ultra High Strength Concrete
刊期 : 2013年第11期
关键词 : 微珠;沸石粉;超高强混凝土;抗压强度;自收缩
Key words : Microsphere; Zeolite powder; Ultra high strength concrete; Compressive strength; Autogenous shrinkage
刊期 : 2013年第11期
DOI :
文章编号 : 1000-4637(2013)11-18-05
基金项目 : 中建股份科技资助(CSCEC-2013-Z-31)
作者 : 王 军,程宝军,贾丽莉,刘 通
单位 : 中建商品混凝土有限公司,武汉 430074

王 军,程宝军,贾丽莉,刘 通

摘要
参数
结论
参考文献
引用本文

摘   要:研究了复合水泥粉体压实体空隙率的变化规律,优化了混凝土胶材组分,并研究了胶料总量、水胶比对超高强混凝土工作性能和抗压强度的影响。在以上研究基础上,开展了沸石粉配制超高强高性能混凝土的试验研究。结果表明,微珠掺22%,硅灰掺8%,复合粉体空隙率最低,堆积密度最大;胶凝材料总量700kg/m3,水胶比0.16时,混凝土抗压强度最高,60d和90d抗压强度分别达146.5MPa和159.7MPa;掺4%沸石粉配制的超高强混凝土60d和90d抗压强度分别为136.7MPa和148.1MPa,比不掺沸石粉的混凝土抗压强度分别降低约4.7%和6.0%,降幅较小;混凝土3d和7d自收缩值分别为万分之0.91和万分之1.82,比不掺沸石粉的混凝土分别降低约21.6%和11.7%,降低混凝土的自收缩作用明显。

 Abstract: The compacting voidage of composite powder pressure entities is studied, and the components of concrete cementing materials are optimized, and the influences of cementing material content, water binder ratio on the working performance and compressive strength of the ultra high strength concrete are researched. Based on the above study, the experimental study on preparation of ultra high strength concrete by zeolite powder is carried out. The results show that when the content of microsphere and silica fume are 22% and 8% separately, the system of microsphere-silica fume-cement composite achieves the densest packing density. When the total amount of cementitious material is 700kg/m3, and the water-cement ratio is 0.16, the compressive strength of concrete curing for 60d and 90d are 146.5MPa and 159.7MPa respectively. When adding with 4% zeolite powder, the compressive strength of concrete curing for60d and 90d are 136.7MPa and 148.1MPa respectively, with a smaller decline of 4.7% and 6.0% compared with concrete without zeolite powder. At the same time, the experimental results show that the autogenous shrinkage of concrete added with 4% zeolite powder curing for 3d and 7d are 91ppm and 182ppm respectively, reduced by 21.6% and 11.7% than concrete without zeolite powder, which significantly reduced the autogenous shrinkage of concrete. 

关键词:
微珠;沸石粉;超高强混凝土;抗压强度;自收缩
扫二维码用手机看
未找到相应参数组,请于后台属性模板中添加
(1)在硅灰-微珠-水泥三元粉体中,微珠和硅灰总掺量30%、硅灰掺量在0~10%范围内,随着掺量的增加,复合粉体空隙率呈现先降低后增长的趋势;硅灰掺量为8%时,复合粉体的压实体空隙率达到最低,堆积密实度最大。
(2)在砂石骨料用量1730kg/m3、砂率40%和水胶比0.20的相同条件下,胶材总量在600~1000kg/m3范围时,随着胶材总量的增加,混凝土工作性能逐渐提高,抗压强度呈现先增加后降低的变化规律;胶凝材料用量在650~750kg/m3范围时,混凝土工作性能和抗压强度较优。
(3)当砂石骨料总量1730kg/m3、砂率40%、胶材总量700kg/m3、水胶比在0.20~0.14范围时,随着水胶比的降低,混凝土的抗压强度呈现先增加后降低趋势;当水胶比为0.16时,混凝土强度最高,60d和90d抗压强度分别为146.5MPa和159.7MPa。
(4)当胶凝材料总量700kg/m3、水胶为0.16时,掺4%沸石粉混凝土比不掺沸石粉混凝土60d和90d抗压强度分别降低约4.7%和6.0%,降幅较小;3d和7d自收缩值分别降低约21.6%和11.7%,降低自收缩效果明显。
[1] Michael Schmidt. Ultra-high performance concrete-high-tech material of the future[J]. Betonwerk+Fertigteil, 2004, 70(2): 90-91. 
[2] P.C.Aitcin. Cement of yesterday and today, concrete of tomorrow[J]. Cement and Concrete Research, 2000,30(6): 1349-1359. 
[3] 蒲心诚, 王冲, 刘芳, 等. 特超强高性能混凝土的研制与展望[J]. 混凝土与水泥制品, 2008(2): 1-5. 
[4] S Rahman, T Molyneaux, I Patnaikuni. Ultra high performance concere: recent applications and research[J]. Australian Journal of Civil Engineering, 2005, 2(1): 13-20.  
[5] 万朝均. 高强超高强高性能混凝土配合比设计经验探讨[J]. 混凝土, 2002(3): 41-43.
[6] 徐根洪. 天然沸石粉作为混凝土掺合料的作用机理[J]. 西部探矿工程, 2004(5): 164-165.
[7] 沈业青. 水泥压实体结构的评价与其硬化体的孔结构及性能[D]. 南京: 南京工业大学, 2010.
[8] 杨文, 程宝军, 刘小琴. 微珠对水泥基胶凝材料性能的影响研究[J]. 混凝土, 2013(5): 109-111.
[9] 刑锋, 冯乃谦. 掺天然沸石粉水泥及其混凝土的性质[J]. 低温建筑技术, 1999(1): 3-5.

相关文件

暂时没有内容信息显示
请先在网站后台添加数据记录。

关注《混凝土与水泥制品》

总访问量 468,401   网站统计

官方微信公众号关闭
苏州混凝土水泥制品研究院有限公司

关于我们    |    联系我们    |    订购杂志    |    回到顶部

版权所有:中国混凝土与水泥制品网  苏ICP备10086386号   网站建设:中企动力 苏州

版权所有:中国混凝土与水泥制品网

苏ICP备10086386号

网站建设:中企动力 苏州