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
装配式桥梁湿接缝混凝土变形及界面性能研究
Study on Deformation and Interface Performance of Wet-joint Concrete of Prefabricated Bridge
2020年第11期
湿接缝混凝土;强度;变形特性;界面性能;养护条件
Wet-joint concrete; Strength; Deformation; Interface performance; Curing condition
2020年第11期
10.19761/j.1000-4637.2020.11.010.05
南京市交通科技项目(G312NJ-KTYJ7);中央级公益性科研院所基本科研业务费专项资金项目(Y420011)。
夏 强1,2,3,4,孙 宇1,王 冬1,2,3,4,唐修生1,2,3,4,祝烨然1,2,3,4,徐志峰1,2,3,4
1.南京水利科学研究院,江苏 南京 210029;2.南京瑞迪高新技术有限公司,江苏 南京 210024;3.水利部水工新材料工程技术中心,江苏 南京 210024;4.安徽瑞和新材料有限公司安徽省院士 工作站,安徽 马鞍山 243000

夏 强1,2,3,4,孙 宇1,王 冬1,2,3,4,唐修生1,2,3,4,祝烨然1,2,3,4,徐志峰1,2,3,4

摘   要:探讨了膨胀剂掺量、养护条件和界面状况对湿接缝混凝土的力学强度、变形特征、界面黏结强度及黏结抗渗性能的影响。试验结果表明:限制养护条件下微膨胀混凝土力学强度较同龄期自由养护试件均有提高,外部约束有利于提高其力学强度;养护条件对湿接缝混凝土的变形性能具有显著影响,工程应用中湿接缝混凝土应进行不少于14 d的湿养护;光面、粗糙面和界面剂处理三种接缝界面状态下,粗糙面试件的黏结劈裂抗拉强度和黏结抗渗性能最高,光面试件最低。涂刷界面剂后黏结劈裂抗拉强度略高于光面试件,但是黏结抗渗性能明显优于光面试件,渗透系数比光面试件降低了73.5%。

Abstract: The effects of the dosage of expansive agent, curing condition and interface situation on the mechanical strength, deformation characteristics, interface bonding strength as well as anti-permeability of wet joint concrete were studied. The results show that mechanical strength of micro-expansive concrete under restrained curing condition is higher than that of under free curing condition at the same ages, which indicates that restraint is beneficial to improvement of mechanical strength. The curing condition has a significant influence on deformation performance of wet-joint concrete and in practise wet-joint concrete should be wet cured for at least 14 d. Among three interface situations, the specimens with rough surface have highest bonding strength and resistance to penetrability while the specimens with smooth surface are the worst. The specimens that are brushed with interfacial agent have a little higher bonding strength but significantly better resistance to penetrability than the smooth specimens with a decrease of permeability coefficient by 73.5%.

夏强,孙宇,王冬,等.装配式桥梁湿接缝混凝土变形及界面性能研究10-14.

XIA Q,SUN Y,WANG D,et al.Study on Deformation and Interface Performance of Wet-joint Concrete of Prefabricated Bridge[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):10-14.

浏览量:
1000
摘   要:探讨了膨胀剂掺量、养护条件和界面状况对湿接缝混凝土的力学强度、变形特征、界面黏结强度及黏结抗渗性能的影响。试验结果表明:限制养护条件下微膨胀混凝土力学强度较同龄期自由养护试件均有提高,外部约束有利于提高其力学强度;养护条件对湿接缝混凝土的变形性能具有显著影响,工程应用中湿接缝混凝土应进行不少于14 d的湿养护;光面、粗糙面和界面剂处理三种接缝界面状态下,粗糙面试件的黏结劈裂抗拉强度和黏结抗渗性能最高,光面试件最低。涂刷界面剂后黏结劈裂抗拉强度略高于光面试件,但是黏结抗渗性能明显优于光面试件,渗透系数比光面试件降低了73.5%。 Abstract: The effects of the dosage of expansive agent, curing condition and interface situation on the mechanical strength, deformation characteristics, interface bonding strength as well as anti-permeability of wet joint concrete were studied. The results show that mechanical strength of micro-expansive concrete under restrained curing condition is higher than that of under free curing condition at the same ages, which indicates that restraint is beneficial to improvement of mechanical strength. The curing condition has a significant influence on deformation performance of wet-joint concrete and in practise wet-joint concrete should be wet cured for at least 14 d. Among three interface situations, the specimens with rough surface have highest bonding strength and resistance to penetrability while the specimens with smooth surface are the worst. The specimens that are brushed with interfacial agent have a little higher bonding strength but significantly better resistance to penetrability than the smooth specimens with a decrease of permeability coefficient by 73.5%.
英文名 : Study on Deformation and Interface Performance of Wet-joint Concrete of Prefabricated Bridge
刊期 : 2020年第11期
关键词 : 湿接缝混凝土;强度;变形特性;界面性能;养护条件
Key words : Wet-joint concrete; Strength; Deformation; Interface performance; Curing condition
刊期 : 2020年第11期
DOI : 10.19761/j.1000-4637.2020.11.010.05
文章编号 :
基金项目 : 南京市交通科技项目(G312NJ-KTYJ7);中央级公益性科研院所基本科研业务费专项资金项目(Y420011)。
作者 : 夏 强1,2,3,4,孙 宇1,王 冬1,2,3,4,唐修生1,2,3,4,祝烨然1,2,3,4,徐志峰1,2,3,4
单位 : 1.南京水利科学研究院,江苏 南京 210029;2.南京瑞迪高新技术有限公司,江苏 南京 210024;3.水利部水工新材料工程技术中心,江苏 南京 210024;4.安徽瑞和新材料有限公司安徽省院士 工作站,安徽 马鞍山 243000

夏 强1,2,3,4,孙 宇1,王 冬1,2,3,4,唐修生1,2,3,4,祝烨然1,2,3,4,徐志峰1,2,3,4

摘   要:探讨了膨胀剂掺量、养护条件和界面状况对湿接缝混凝土的力学强度、变形特征、界面黏结强度及黏结抗渗性能的影响。试验结果表明:限制养护条件下微膨胀混凝土力学强度较同龄期自由养护试件均有提高,外部约束有利于提高其力学强度;养护条件对湿接缝混凝土的变形性能具有显著影响,工程应用中湿接缝混凝土应进行不少于14 d的湿养护;光面、粗糙面和界面剂处理三种接缝界面状态下,粗糙面试件的黏结劈裂抗拉强度和黏结抗渗性能最高,光面试件最低。涂刷界面剂后黏结劈裂抗拉强度略高于光面试件,但是黏结抗渗性能明显优于光面试件,渗透系数比光面试件降低了73.5%。

Abstract: The effects of the dosage of expansive agent, curing condition and interface situation on the mechanical strength, deformation characteristics, interface bonding strength as well as anti-permeability of wet joint concrete were studied. The results show that mechanical strength of micro-expansive concrete under restrained curing condition is higher than that of under free curing condition at the same ages, which indicates that restraint is beneficial to improvement of mechanical strength. The curing condition has a significant influence on deformation performance of wet-joint concrete and in practise wet-joint concrete should be wet cured for at least 14 d. Among three interface situations, the specimens with rough surface have highest bonding strength and resistance to penetrability while the specimens with smooth surface are the worst. The specimens that are brushed with interfacial agent have a little higher bonding strength but significantly better resistance to penetrability than the smooth specimens with a decrease of permeability coefficient by 73.5%.

夏强,孙宇,王冬,等.装配式桥梁湿接缝混凝土变形及界面性能研究10-14.

XIA Q,SUN Y,WANG D,et al.Study on Deformation and Interface Performance of Wet-joint Concrete of Prefabricated Bridge[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):10-14.

摘要
参数
结论
参考文献
引用本文

摘   要:探讨了膨胀剂掺量、养护条件和界面状况对湿接缝混凝土的力学强度、变形特征、界面黏结强度及黏结抗渗性能的影响。试验结果表明:限制养护条件下微膨胀混凝土力学强度较同龄期自由养护试件均有提高,外部约束有利于提高其力学强度;养护条件对湿接缝混凝土的变形性能具有显著影响,工程应用中湿接缝混凝土应进行不少于14 d的湿养护;光面、粗糙面和界面剂处理三种接缝界面状态下,粗糙面试件的黏结劈裂抗拉强度和黏结抗渗性能最高,光面试件最低。涂刷界面剂后黏结劈裂抗拉强度略高于光面试件,但是黏结抗渗性能明显优于光面试件,渗透系数比光面试件降低了73.5%。

Abstract: The effects of the dosage of expansive agent, curing condition and interface situation on the mechanical strength, deformation characteristics, interface bonding strength as well as anti-permeability of wet joint concrete were studied. The results show that mechanical strength of micro-expansive concrete under restrained curing condition is higher than that of under free curing condition at the same ages, which indicates that restraint is beneficial to improvement of mechanical strength. The curing condition has a significant influence on deformation performance of wet-joint concrete and in practise wet-joint concrete should be wet cured for at least 14 d. Among three interface situations, the specimens with rough surface have highest bonding strength and resistance to penetrability while the specimens with smooth surface are the worst. The specimens that are brushed with interfacial agent have a little higher bonding strength but significantly better resistance to penetrability than the smooth specimens with a decrease of permeability coefficient by 73.5%.

关键词:
变形
the
of
试件
黏结
光面
养护
strength
界面
接缝
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)自由养护条件下,混凝土抗压强度和劈裂抗拉强度随着膨胀剂掺量增加而降低,而在限制养护条件下,掺入膨胀剂试件的抗压及劈裂抗拉强度较同龄期自由养护试件均有提高,外部约束有利于提高微膨胀混凝土的力学强度。
(2)养护条件对湿接缝混凝土的变形性能具有显著影响,掺10%膨胀剂混凝土在水养14 d条件下限制膨胀率为500 με,密封养护条件下膨胀值为33 με,干燥养护条件下收缩值为237 με,在工程实际应用中,微膨胀湿接缝混凝土应进行不少于14 d湿养护。
(3) 三种接缝界面状态下,粗糙面试件的黏结劈裂抗拉强度和黏结抗渗性能最高,光面试件最低。涂刷界面剂后黏结劈裂抗拉强度略高于光面试件,但是黏结抗渗性能明显优于无处理光面试件,渗透性系数比光面试件降低73.5%。

[1] 张利铨.桥梁装配式预制技术研究综述[J].华东公路,2015,(5):18-20.
[2] 廖明.大悬臂箱梁预制拼装技术研究[D].武汉:华中科技大学,2013.
[3] 倪玲,周水兴,邓杨芳,等.补偿收缩混凝土在桥面现浇湿接缝的试验研究[J].混凝土,2009(11):39-41.
[4] MATEUSZ W,GIOVANNI T,PIETRO L.Expansive high-performance concrete for chemical-prestress applications[J].Cement and Concrete Research,2018,107:275-283.
[5] 杨晓明,王爱国,刘开伟,等.纤维增强微膨胀湿接缝混凝土的性能研究[J].硅酸盐通报,2018,37(6):1974-1978.
[6] 李国平,胡皓,任才,等.桥梁混凝土结构接缝的耐久性能[J].土木工程学报,2018,51(7):98-103.
[7] 许春荣,郭慧乾,刘光严,等.桥梁混凝土的盐冻损伤与耐久性提升技术[J].公路,2020(4):192-196.
[8] 齐文艳.混凝土桥梁耐久性施工控制技术研究[J].粉煤灰综合利用,2019(3):70-73.
[9] 金伟良,赵羽习.混凝土结构耐久性:第2版[M].北京:科学出版社,2014.
[10] 许宏发,于开洋,程学新,等.混凝土接缝抗渗试验方法研究[J].四川大学学报(工程科学版),2010,42(4):7-12.
[11] 李鹏,苗苗,马晓杰,等.膨胀剂对补偿收缩混凝土性能影响的研究进展[J].硅酸盐通报,2016,35(1):167-173.
[12] 杨宁,韩圣铭.HCSA膨胀剂掺量对水泥砂浆性能的影响研究[J].混凝土与水泥制品,2020(3):19-23.
[13] 史长城,王大辉,袁群,等.短龄期老混凝土与新混凝土粘结的劈拉强度研究[J].混凝土与水泥制品,2015(5):15-18.
[14] 崔寒.新型界面剂作用下新老混凝土粘结影响因素及机理研究[D].郑州:华北水利水电大学,2018.

夏强,孙宇,王冬,.装配式桥梁湿接缝混凝土变形及界面性能研究10-14.

XIA Q,SUN Y,WANG D,et al.Study on Deformation and Interface Performance of Wet-joint Concrete of Prefabricated Bridge[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):10-14.

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