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
西北地区强腐蚀环境高耐久性纤维增强混凝土技术研究
Study on high durability fiber reinforced concrete technology in strong corrosion environment in Northwest China
2024年第10期
混凝土;工作性;抗压强度;耐久性能;氯离子扩散系数
Concrete; Workability; Compressive strength; Durability; Chloride ion diffusion coefficient
2024年第10期
10.19761/j.1000-4637.2024.10.040.05
陕西省科技厅重点研发计划一般项目(2023-YBSF-538)。
庞安宇,刘向坤*,张 伟
中核混凝土股份有限公司,陕西 西安 710016

庞安宇,刘向坤*,张 伟

庞安宇,刘向坤,张伟.西北地区强腐蚀环境高耐久性纤维增强混凝土技术研究[J].混凝土与水泥制品,2024(10):40-43,48.

PANG A Y,LIU X K,ZHANG W.Study on high durability fiber reinforced concrete technology in strong corrosion environment in Northwest China[J].China Concrete and Cement Products,2024(10):40-43,48.

浏览量:
1000
摘   要:针对西北地区核电工程恶劣环境,采用镁质抗蚀增强剂、水化热抑制剂、高性能复合矿物掺合料等制备了聚丙烯纤维增强C40高性能混凝土,研究了镁质抗蚀增强剂和水化热抑制剂对混凝土的工作性、力学性能和耐久性能的影响,并基于试验结果对纤维的最佳掺量进行了优选。结果表明:掺加水化热抑制剂和镁质抗蚀增强剂的混凝土具有良好的工作性,掺入不同掺量的纤维,混凝土的出机坍落度仍保持在160 mm以上,含气量在2.7%~4.2%之间;掺加水化热抑制剂和镁质抗蚀增强剂,混凝土的3 d抗压强度降低,7 d、28 d抗压强度提高,而随着纤维掺量的增加,混凝土的抗压强度提高;水化热抑制剂和镁质抗蚀增强剂的掺入可有效提高混凝土的抗氯离子渗透性能,掺入适量纤维可显著提高混凝土的抗氯离子渗透性能;水化热抑制剂和镁质抗蚀增强剂的掺入可提高混凝土的抗硫酸盐侵蚀性能,适量纤维的掺入也可提高混凝土的抗硫酸盐侵蚀性能;综合考虑工作性、力学性能和耐久性能,纤维推荐掺量为1.0 kg/m3。 Abstract: In response to  the harsh environment of nuclear power projects in the northwest region, polypropylene fiber reinforced C40 high performance concrete was prepared using magnesium based corrosion inhibitors, hydration heat inhibitors, high-performance composite mineral admixtures, etc. The effects of magnesium based corrosion inhibitors and hydration heat inhibitors on the workability, mechanical properties, and durability of concrete were studied, and the optimal fiber content was selected based on experimental results. The results show that the concrete with hydration heat inhibitor and magnesium corrosion inhibitor has good workability. When different contents of fibers are added, the slump of the concrete remains above 160 mm and the air content is between 2.7% and 4.2%. The addition of hydration heat inhibitor and magnesium based corrosion inhibitor reduces the compressive strength of concrete at 3 d, increases the compressive strength at 7 d and 28 d. With the increase of fiber content, the compressive strength of concrete increases. The addition of hydration heat inhibitors and magnesium based corrosion inhibitors can effectively improve the chloride ion penetration resistance of concrete, and the addition of appropriate contents of fibers can significantly enhance the chloride ion penetration resistance of concrete. The addition of hydration heat inhibitors and magnesium based corrosion inhibitors can improve the sulfate resistance of concrete, and the addition of appropriate contents of fibers can also enhance the sulfate resistance of concrete. Taking into account workability, mechanical properties, and durability, the recommended fiber content is 1.0 kg/m3.
英文名 : Study on high durability fiber reinforced concrete technology in strong corrosion environment in Northwest China
刊期 : 2024年第10期
关键词 : 混凝土;工作性;抗压强度;耐久性能;氯离子扩散系数
Key words : Concrete; Workability; Compressive strength; Durability; Chloride ion diffusion coefficient
刊期 : 2024年第10期
DOI : 10.19761/j.1000-4637.2024.10.040.05
文章编号 :
基金项目 : 陕西省科技厅重点研发计划一般项目(2023-YBSF-538)。
作者 : 庞安宇,刘向坤*,张 伟
单位 : 中核混凝土股份有限公司,陕西 西安 710016

庞安宇,刘向坤*,张 伟

庞安宇,刘向坤,张伟.西北地区强腐蚀环境高耐久性纤维增强混凝土技术研究[J].混凝土与水泥制品,2024(10):40-43,48.

PANG A Y,LIU X K,ZHANG W.Study on high durability fiber reinforced concrete technology in strong corrosion environment in Northwest China[J].China Concrete and Cement Products,2024(10):40-43,48.

摘要
参数
结论
参考文献
引用本文

摘   要:针对西北地区核电工程恶劣环境,采用镁质抗蚀增强剂、水化热抑制剂、高性能复合矿物掺合料等制备了聚丙烯纤维增强C40高性能混凝土,研究了镁质抗蚀增强剂和水化热抑制剂对混凝土的工作性、力学性能和耐久性能的影响,并基于试验结果对纤维的最佳掺量进行了优选。结果表明:掺加水化热抑制剂和镁质抗蚀增强剂的混凝土具有良好的工作性,掺入不同掺量的纤维,混凝土的出机坍落度仍保持在160 mm以上,含气量在2.7%~4.2%之间;掺加水化热抑制剂和镁质抗蚀增强剂,混凝土的3 d抗压强度降低,7 d、28 d抗压强度提高,而随着纤维掺量的增加,混凝土的抗压强度提高;水化热抑制剂和镁质抗蚀增强剂的掺入可有效提高混凝土的抗氯离子渗透性能,掺入适量纤维可显著提高混凝土的抗氯离子渗透性能;水化热抑制剂和镁质抗蚀增强剂的掺入可提高混凝土的抗硫酸盐侵蚀性能,适量纤维的掺入也可提高混凝土的抗硫酸盐侵蚀性能;综合考虑工作性、力学性能和耐久性能,纤维推荐掺量为1.0 kg/m3

Abstract: In response to  the harsh environment of nuclear power projects in the northwest region, polypropylene fiber reinforced C40 high performance concrete was prepared using magnesium based corrosion inhibitors, hydration heat inhibitors, high-performance composite mineral admixtures, etc. The effects of magnesium based corrosion inhibitors and hydration heat inhibitors on the workability, mechanical properties, and durability of concrete were studied, and the optimal fiber content was selected based on experimental results. The results show that the concrete with hydration heat inhibitor and magnesium corrosion inhibitor has good workability. When different contents of fibers are added, the slump of the concrete remains above 160 mm and the air content is between 2.7% and 4.2%. The addition of hydration heat inhibitor and magnesium based corrosion inhibitor reduces the compressive strength of concrete at 3 d, increases the compressive strength at 7 d and 28 d. With the increase of fiber content, the compressive strength of concrete increases. The addition of hydration heat inhibitors and magnesium based corrosion inhibitors can effectively improve the chloride ion penetration resistance of concrete, and the addition of appropriate contents of fibers can significantly enhance the chloride ion penetration resistance of concrete. The addition of hydration heat inhibitors and magnesium based corrosion inhibitors can improve the sulfate resistance of concrete, and the addition of appropriate contents of fibers can also enhance the sulfate resistance of concrete. Taking into account workability, mechanical properties, and durability, the recommended fiber content is 1.0 kg/m3.

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)掺加水化热抑制剂和镁质抗蚀增强剂的混凝土具有良好的工作性,出机坍落度仍在190 mm;掺入不同掺量的纤维,混凝土的出机坍落度仍保持在160 mm以上,含气量在2.7%~4.2%之间,仍可较好地满足核电工程施工要求[坍落度(160±30)mm,含气量3%~6%]。
(2)复掺一定量的水化热抑制剂和镁质抗蚀增强剂,混凝土的3 d抗压强度降低,7 d、28 d抗压强度提高;掺入纤维可提高混凝土的抗压强度。
(3)水化热抑制剂和镁质抗蚀增强剂的掺入可有效降低混凝土的28 d氯离子扩散系数;适量纤维的掺入通过发挥其增强阻裂作用可显著提高混凝土的抗氯离子渗透性能。
(4)水化热抑制剂和镁质抗蚀增强剂的掺入可提高混凝土的抗硫酸盐侵蚀性能,S2组试件的抗硫酸盐侵蚀等级达到KS120;适量纤维的掺入也可提高混凝土的抗硫酸盐侵蚀性能,S4组试件的抗硫酸盐侵蚀等级达到KS150。 

[1] 刘向坤,胡德华,张伟,等.核电工程用大掺量矿物掺合料高性能混凝土试验研究[J].混凝土与水泥制品,2022(7):83-86.
[2] 许建华,杜国伟,刘向坤,等.粉煤灰-矿粉复合掺合料对核工程混凝土性能的影响[J].混凝土与水泥制品,2023(7):90-94.
[3] 董振平,张成中,孙广帅,等.掺合料混凝土早期强度的试验
研究[J].混凝土,2017(10):83-86.
[4] 杜国伟,刘向坤,杜增强,等.大流动度混杂纤维增强混凝土
基本力学性能研究[J].混凝土与水泥制品,2017(6):53-55.
[5] 朱国军,秦哲焕,谷亚军,等.超细复合矿物掺合料在实体混凝土结构中的应用评价[J].武汉理工大学学报,2022,44(11):26-30.
[6] 李仕彬,王文涛,黄从运,等.高性能复合矿物掺合料的制备
及胶砂性能研究[J].混凝土与水泥制品,2022(8):87-90,95
[7] 郭远新,胡振文,郑世东,等.养护制度和掺量对高活性复合矿物掺合料胶凝材料性能的影响研究[J].混凝土,2022(10):101-105.
[8] 谷坤鹏,于福,叶守杰,等.掺合料对高耐久性清水混凝土外观的影响[J].水运工程,2020(8):48-51.
[9] 李洁文,马凌宇,李桂芹.粉煤灰和矿粉对混凝土力学与耐久性能的影响研究[J].当代化工,2021,50(3):545-548.
[10] 李云峰,孔令鹏,李强龙.多种矿物掺合料对超高强混凝土力学性能影响的试验研究[J].中国科技论文,2017,12(10):1141-1144. 
[11] 何柳.机制砂成分对隧道混凝土抗硫酸盐侵蚀性能的影响[J].混凝土与水泥制品,2022(5):21-25.
[12] 惠建许,杜增强,高建军,等.大流动度混杂纤维增强混凝土耐久性试验研究[J].混凝土与水泥制品,2017(8):52-55.
[13] 甘磊,吴健,沈振中.硫酸盐和干湿循环作用下玄武岩纤维混凝土劣化规律[J].土木工程学报,2021,54(11):37-46.
[14] 任旭,刘志超,WILL H.浅析混凝土的冻融破坏机理[J].混凝土,2024(6):12-18.
[15] 蒋威,杜磊,刘鑫.玄武岩纤维增强粉煤灰混凝土抗压强度性能研究[J].混凝土,2023(5):56-60.
[16] 韩建平,文旭皓,韩维丽.钢-PVA混杂纤维增强混凝土轴压力学性能试验研究[J].混凝土,2021(9):45-49.
[17] 曹银,王玲,王振地,等.弯拉荷载-冻融循环-氯盐侵蚀作用下混凝土的劣化[J].建筑材料学报,2016,19(5):821-825.
[18] 刘超,姚羿舟,刘化威,等.硫酸盐干湿循环下再生复合微粉混凝土的劣化机理[J].建筑材料学报,2022(11):1128-1135.
[19] 路承功,魏智强,乔宏霞.盐渍土地区混凝土加速寿命试验可靠性分析方法[J].中南大学学报(自然科学版),2021,52(3):1017-1026.
[20] 罗如平,周宇航,朱碧堂,等.硫酸盐环境下BFFC侵蚀试验及强度预测模型[J].中南大学学报(自然科学版),2024,55(7):2780-2791.

庞安宇,刘向坤,张伟.西北地区强腐蚀环境高耐久性纤维增强混凝土技术研究[J].混凝土与水泥制品,2024(10):40-43,48.

PANG A Y,LIU X K,ZHANG W.Study on high durability fiber reinforced concrete technology in strong corrosion environment in Northwest China[J].China Concrete and Cement Products,2024(10):40-43,48.

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