[1]周玲珠,万钧涛,郑 愚,等.GFRP筋与海水海砂高掺量粉煤灰自密实混凝土的粘结性能研究[J].西安建筑科技大学学报(自然科学版),2022,(02):211-219+236.[doi:10.15986/j.1006-7930.2022.02.007]
 ZHOU Lingzhu,WAN Juntao,ZHENG Yu,et al.Study on bond behavior of GFRP bars and self-compacting concrete mixed with seawater sea-sand and high-volume fly ash[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2022,(02):211-219+236.[doi:10.15986/j.1006-7930.2022.02.007]
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GFRP筋与海水海砂高掺量粉煤灰自密实混凝土的粘结性能研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2022年02期
页码:
211-219+236
栏目:
出版日期:
2022-04-28

文章信息/Info

Title:
Study on bond behavior of GFRP bars and self-compacting concrete mixed with seawater sea-sand and high-volume fly ash
文章编号:
1006-7930(2022)02-0211-09
作者:
周玲珠1万钧涛1郑 愚1罗远彬2王晓璐1吴方宏3
(1.东莞理工学院 生态环境与建筑工程学院, 广东 东莞 523000; 2.中国建筑第六工程局有限公司, 天津 300450; 3.广东德誉建筑设计有限公司,广东 广州 511453)
Author(s):
ZHOU Lingzhu1 WAN Juntao1 ZHENG Yu1 LUO Yuanbin2 WANG Xiaolu1 WU Fanghong3
(1.School of Environment and Civil Engineering, Dongguan University of Technology, Guangdong Dongguang 523000, China; 2.China Construction Sixth Engineering Bureau Co., Ltd., Tianjin 300450, China; 3.Guangdong Deyu Architectural Design Co., Ltd, Guangdong Guangzhou 511453, China)
关键词:
GFRP筋 海水海砂 HVFA-SCC 粘结性能
Keywords:
GFRP bar seawater and sea-sand HVFA-SCC bond behavior
分类号:
TU377.9
DOI:
10.15986/j.1006-7930.2022.02.007
文献标志码:
A
摘要:
为解决淡水河砂资源短缺、水泥高能耗等问题,采用海水海砂代替淡水河砂、粉煤灰代替50%的水泥制备海水海砂高掺量粉煤灰自密实混凝土(HVFA-SCC).同时,为解决海水海砂的使用引起钢筋锈蚀问题,采用纤维增强复合(FRP)筋代替钢筋.为研究玻璃纤维增强复合(GFRP)筋与海水海砂HVFA-SCC的粘结性能,本文制作了9组拉拔试件,重点讨论混凝土材料、筋材直径和筋材类型对粘结失效机理、粘结强度及粘结-滑移曲线的影响规律.并且,分析不同粘结滑移本构模型预测GFRP筋与海水海砂HVFA-SCC粘结-滑移曲线的准确性.最后,基于FRP筋增强混凝土的粘结-滑移曲线数据,校核双α粘结滑移本构模型参数.研究表明:排除混凝土强度影响后,混凝土类型对粘结强度的影响较小; 筋材直径的增加导致粘结强度降低,粘结失效机理由筋材树脂层剪切破坏转为树脂层磨损破坏; 筋材类型(GFRP筋、BFRP筋及带肋钢筋)对粘结强度基本无影响; 基于粘结-滑移曲线数据,获得了不同参数拉拔试件的双α粘结滑移模型表达式.
Abstract:
In order to solve the problems of shortage of freshwater river sand resources and high energy consumption of cement, seawater sea sand is used to replace freshwater river sand and fly ash is used to replace 50% of cement to produce seawater sea-sand high-volume fly ash self-compacting concrete(HVFA-SCC). Also, to solve the corrosion problem of steel bar induced by the use of sea water and sea-sand, fiber reinforced polymer(FRP)bar is used instead of steel bar. In this paper, nine groups of pull-out specimens were fabricated to study the bond behavior between glass fiber reinforced polymer(GFRP)bar and seawater sea-sand HVFA-SCC. The effects of the type of concrete materials, the diameter and type of reinforcing bar on bond failure mechanism, bond strength and bond-slip curves were discussed. Furthermore, the accuracy of different bond-slip constitutive models for predicting bond-slip curves between GFRP bars and seawater sea-sand HVFA-SCC was analyzed. Finally, the parameters of double α bond-slip model were verified by using the data of bond-slip curves of FRP reinforced concrete. The results showed that the type of concrete materials had little influence on the bond strength after excluding the effect of concrete strength. The bond strength decreased with the increase of reinforcement diameter, and the bond failure mechanism changed from shear failure to abrasion failure of the resin layer. The type of the reinforcing bar(GFRP bar, BFRP bar and steel bar)had barely effect on the bond strength. Based on the data of bond-slip curves, the expressions of double α bond-slip model for specimens with different parameters were obtained.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-04-01修改稿日期:2021-04-18
基金项目:国家自然科学基金资助项目(52170800, 52178192)、广东省基础与应用基础粤莞联合青年基金资助项目(2019A1515110050)、粤港澳大湾区国际科技创新中心建设基金资助项目(2021A0505110016)、广东省普通高校基础研究与应用基础研究重点基金项目(2018KZDXM068)
第一作者:周玲珠(1992—),女,博士,讲师,主要从事FRP纤维复材及高性能低能耗混凝土材料研究.E-mail:lingzhu_zhou@163.com
更新日期/Last Update: 2022-04-28