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
不同因素对UHPC-普通混凝土黏结强度影响的试验研究
Experimental Study on Effects of Different Factors on Bonding Strength Between UHPC and Ordinary Concrete
2019年第4期
UHPC;黏结强度;界面;处理工艺;界面剂
UHPC; Bonding strength; Interface treatment; Interface agent
2019年第4期
10.19761/j.1000-4637.2019.04.004.05
国家重点研发计划项目(2018YFC0705404);国家自然科学基金资助项目(51878480、51678442、51878481、 51878496);国家高铁联合基金项目(U1534207);中央高校基本科研业务费专项资金资助。
龙 杰,陈 庆,蒋正武
同济大学先进土木工程材料教育部重点试验室,材料科学与工程学院,上海 201804

龙 杰,陈 庆,蒋正武

龙杰,陈庆,蒋正武.不同因素对UHPC-普通混凝土黏结强度影响的试验研究[J].混凝土与水泥制品,2019(4):4-8.

LONG J,CHEN Q,JIANG Z W.Experimental Study on Effects of Different Factors on Bonding Strength Between UHPC and Ordinary Concrete[J].China Concrete and Cement Products,2019(4):4-8.

浏览量:
1000
摘 要:通过斜剪切与劈裂抗拉试验方法研究了超高性能混凝土(UHPC)与普通混凝土(NC)的黏结性能,分析了UHPC关键组分、不同界面处理方法、普通混凝土强度等级及不同种类界面剂等因素对UHPC-NC黏结强度的影响。 研究结果表明,相较于未处理表面,钢丝刷毛、表面切槽和表面凿毛三种界面处理方法分别对C30(C50)基体混凝土与UHPC间的剪切黏结强度提升了32.9%(42.3%)、45.4%(6.5%)、12.8%(15.3%);使用净浆、膨胀剂净浆涂刷黏结界面相较于未处理表面分别对C30(C50)基体混凝土间的剪切黏结强度提高了10.8%(32.3%)和6.8%(14%),抗拉黏结强度提升规律基本一致,而使用环氧树脂和丁苯净浆作为界面剂会降低UHPC-NC的黏结性能;相比较素UHPC,掺入钢纤维和膨胀剂分别对C30(C50)基体与UHPC间的剪切黏结强度提升了16.4%(32%)和6.8%(11.1%),而掺入PVA纤维几乎无影响。 Abstract: The bonding properties of ultra-high performance concrete (UHPC) and ordinary concrete (NC) were studied by oblique shearing and splitting tensile test. The effects of UHPC key components, different interface treatment methods, ordinary concrete strength grades and different kinds of interface agents on the bond strength of UHPC-NC were studied. The results show that the shear bond strength of C30 (C50) base concrete and UHPC after wire brushing, surface grooving and surface chiseling is increased by 32.9% (42.3%), 45.4%(6.5%), 12.8%(15.3%) respectively, compared with the untreated surface; the shear bond strength of C30 (C50) base concrete and UHPC using cement paste, cement paste with expanding agent is increased by 10.8% (32.3), 6.8%(14%), respectively, compared with the untreated surface, as for split tensile strength, the results are similar. While using cement paste with SBR or epoxy will reduce the bonding strength. Compared with the plain UHPC, the shear bond strength of the C30 (C50) substrates is increased by 16.4% (32%) and 6.8% (11.1%), respectively, and the incorporation of PVA fibers has almost no effect.
英文名 : Experimental Study on Effects of Different Factors on Bonding Strength Between UHPC and Ordinary Concrete
刊期 : 2019年第4期
关键词 : UHPC;黏结强度;界面;处理工艺;界面剂
Key words : UHPC; Bonding strength; Interface treatment; Interface agent
刊期 : 2019年第4期
DOI : 10.19761/j.1000-4637.2019.04.004.05
文章编号 :
基金项目 : 国家重点研发计划项目(2018YFC0705404);国家自然科学基金资助项目(51878480、51678442、51878481、 51878496);国家高铁联合基金项目(U1534207);中央高校基本科研业务费专项资金资助。
作者 : 龙 杰,陈 庆,蒋正武
单位 : 同济大学先进土木工程材料教育部重点试验室,材料科学与工程学院,上海 201804

龙 杰,陈 庆,蒋正武

龙杰,陈庆,蒋正武.不同因素对UHPC-普通混凝土黏结强度影响的试验研究[J].混凝土与水泥制品,2019(4):4-8.

LONG J,CHEN Q,JIANG Z W.Experimental Study on Effects of Different Factors on Bonding Strength Between UHPC and Ordinary Concrete[J].China Concrete and Cement Products,2019(4):4-8.

摘要
参数
结论
参考文献
引用本文

摘   要:通过斜剪切与劈裂抗拉试验方法研究了超高性能混凝土(UHPC)与普通混凝土(NC)的黏结性能,分析了UHPC关键组分、不同界面处理方法、普通混凝土强度等级及不同种类界面剂等因素对UHPC-NC黏结强度的影响。 研究结果表明,相较于未处理表面,钢丝刷毛、表面切槽和表面凿毛三种界面处理方法分别对C30(C50)基体混凝土与UHPC间的剪切黏结强度提升了32.9%(42.3%)、45.4%(6.5%)、12.8%(15.3%);使用净浆、膨胀剂净浆涂刷黏结界面相较于未处理表面分别对C30(C50)基体混凝土间的剪切黏结强度提高了10.8%(32.3%)和6.8%(14%),抗拉黏结强度提升规律基本一致,而使用环氧树脂和丁苯净浆作为界面剂会降低UHPC-NC的黏结性能;相比较素UHPC,掺入钢纤维和膨胀剂分别对C30(C50)基体与UHPC间的剪切黏结强度提升了16.4%(32%)和6.8%(11.1%),而掺入PVA纤维几乎无影响。

Abstract: The bonding properties of ultra-high performance concrete (UHPC) and ordinary concrete (NC) were studied by oblique shearing and splitting tensile test. The effects of UHPC key components, different interface treatment methods, ordinary concrete strength grades and different kinds of interface agents on the bond strength of UHPC-NC were studied. The results show that the shear bond strength of C30 (C50) base concrete and UHPC after wire brushing, surface grooving and surface chiseling is increased by 32.9% (42.3%), 45.4%(6.5%), 12.8%(15.3%) respectively, compared with the untreated surface; the shear bond strength of C30 (C50) base concrete and UHPC using cement paste, cement paste with expanding agent is increased by 10.8% (32.3), 6.8%(14%), respectively, compared with the untreated surface, as for split tensile strength, the results are similar. While using cement paste with SBR or epoxy will reduce the bonding strength. Compared with the plain UHPC, the shear bond strength of the C30 (C50) substrates is increased by 16.4% (32%) and 6.8% (11.1%), respectively, and the incorporation of PVA fibers has almost no effect.

关键词:
UHPC;黏结强度;界面;处理工艺;界面剂
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)通过三种表面处理方式,分别对C30和C50基体混凝土与UHPC间的剪切黏结强度提升了32.9%、42.3%、45.4%和6.5%、12.8%、15.3%,甚至超过老混凝土立方体试件的抗压强度。
(2)相比较素UHPC,掺入钢纤维和膨胀剂对C30和C50基体与UHPC间的剪切黏结强度分别提升了16.4%,32%和6.8%,11.1%,而掺入PVA纤维几乎无影响。
(3)使用水泥-矿粉净浆,掺入膨胀剂净浆作为界面剂相较于未处理表面分别对C30和C50基体混凝土与UHPC间的剪切黏结强度提升了10.8%、32.3%和6.8%、14%,抗拉黏结性能分别提升12.5%、34.4%和14.3%、28.3%,而使用环氧树脂和丁苯净浆作为界面剂会降低UHPC-NC的黏结性能。
 
[1] 蒋正武.基于整体方法论的混凝土修补思考[J].材料导报,2009,23(5):80-83,95.
[2] 蒋正武,尹军.可持续混凝土发展的技术原则与途径[J].建筑材料学报,2016,19(6):957-963.
[3] 陈俊.超高性能混凝土(UHPC)高压水射流凿毛处理及修补材料研究[D].长沙:湖南大学,2015.
[4] Shi C J. A review on ultra high performance concrete: Part I. Raw materials and mixture design[J]. Construction and Building Materials 2015,101:741-751.
[5] 张孝臣.基于UHPCC修复既有RC结构性能的研究综述[J].工业建筑,2016年(增刊Ⅰ):9.
[6] Bassam A. Tayeha, Utilization of Ultra-High Performance Fibre Concrete (UHPFC) for Rehabilitation-a Review[J].Procedia Engineering,2013,54:525-538.
[7] 王强.钢纤维取向角对超高性能混凝土抗拉强度的影响[J].混凝土与水泥制品,2019(1):51-54.
[8] Oesterlee C,Denarié E,Brühwiler E. In-situ Casting of UHPFRC Protection Layer on Crash Barrier Walls [C]. Procee dings,Advances in Construction Materials-Symposium in Honour of Hans W.Reinhardt, University of Stuttgart, Germany,2007,7,23-24.
[9] 张阳,王兴旺.UHPC加固RC结构交界面抗剪性能试验研究[J].中外公路,2017,37(2):105-111.
[10] Janga H O,Leea H S,Chob K,et al.Experimental study on shear performance of plain construction joints integrated with ultra-high performance concrete (UHPC)[J].Construction and Building Materials 2017,152:16-23.
[11] 任强,蒋正武,马敬畏.矿物掺和料对磷酸镁水泥基修补砂浆强度的影响[J].建筑材料学报,2016,19(6):1062-1067.
[12] Hea Y,Zhang X,Hootonc R D,et al.Effects of interface roughness and interface adhesion on new-to-old concrete bonding[J].Construction and Building Materials 2017,151:582-590.
 

龙杰,陈庆,蒋正武.不同因素对UHPC-普通混凝土黏结强度影响的试验研究[J].混凝土与水泥制品,2019(4):4-8.

LONG J,CHEN Q,JIANG Z W.Experimental Study on Effects of Different Factors on Bonding Strength Between UHPC and Ordinary Concrete[J].China Concrete and Cement Products,2019(4):4-8.

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