钢筋混凝土在持续弯曲下的腐蚀与氯离子扩散

IF 0.8 4区工程技术 Q4 ENGINEERING, CIVIL

Teknik Dergi Pub Date : 2020-11-01 DOI:10.18400/tekderg.430536

N. Ozyurt, T. A. Söylev, T. Özturan, A. Pehlivan, A. Niş

{"title":"钢筋混凝土在持续弯曲下的腐蚀与氯离子扩散","authors":"N. Ozyurt, T. A. Söylev, T. Özturan, A. Pehlivan, A. Niş","doi":"10.18400/tekderg.430536","DOIUrl":null,"url":null,"abstract":"This research discusses the chloride diffusivity of concrete as well as corrosion performance of rebars in cracked and uncracked states. Prismatic concrete specimens with two water-to-cement ratios, two concrete cover thicknesses with and without steel fibers were used. Three-point flexural loading was applied to form cracks and cracks were sustained by a bolt system. Half-cell potential and corrosion rate measurements were carried out following wetting – drying cycles in chloride environment which were continued for 80 weeks. The positive effects of lower water – to – cement ratio and greater cover depth were found to be surpassed by existence of cracks in concrete.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Corrosion and Chloride Diffusivity of Reinforced Concrete Cracked under Sustained Flexure\",\"authors\":\"N. Ozyurt, T. A. Söylev, T. Özturan, A. Pehlivan, A. Niş\",\"doi\":\"10.18400/tekderg.430536\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This research discusses the chloride diffusivity of concrete as well as corrosion performance of rebars in cracked and uncracked states. Prismatic concrete specimens with two water-to-cement ratios, two concrete cover thicknesses with and without steel fibers were used. Three-point flexural loading was applied to form cracks and cracks were sustained by a bolt system. Half-cell potential and corrosion rate measurements were carried out following wetting – drying cycles in chloride environment which were continued for 80 weeks. The positive effects of lower water – to – cement ratio and greater cover depth were found to be surpassed by existence of cracks in concrete.\",\"PeriodicalId\":49442,\"journal\":{\"name\":\"Teknik Dergi\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2020-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Teknik Dergi\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.18400/tekderg.430536\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Teknik Dergi","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.18400/tekderg.430536","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 5

摘要

本研究讨论了混凝土的氯离子扩散率以及钢筋在开裂和未开裂状态下的腐蚀性能。使用了具有两种水灰比、两种混凝土保护层厚度（含和不含钢纤维）的棱柱混凝土试样。施加三点弯曲载荷形成裂纹，裂纹由螺栓系统支撑。半电池电位和腐蚀速率测量是在氯化物环境中持续80周的润湿-干燥循环之后进行的。混凝土中裂缝的存在超过了较低的水灰比和较大的覆盖深度的积极影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Corrosion and Chloride Diffusivity of Reinforced Concrete Cracked under Sustained Flexure

This research discusses the chloride diffusivity of concrete as well as corrosion performance of rebars in cracked and uncracked states. Prismatic concrete specimens with two water-to-cement ratios, two concrete cover thicknesses with and without steel fibers were used. Three-point flexural loading was applied to form cracks and cracks were sustained by a bolt system. Half-cell potential and corrosion rate measurements were carried out following wetting – drying cycles in chloride environment which were continued for 80 weeks. The positive effects of lower water – to – cement ratio and greater cover depth were found to be surpassed by existence of cracks in concrete.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Teknik Dergi 工程技术-工程：土木

自引率

30.80%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of Teknik Dergi is naturally confined with the subjects falling in the area of civil engineering. However, the area of civil engineering has recently been significantly enlarged, even the definition of civil engineering has somewhat changed. Half a century ago, engineering was simply defined as “the art of using and converting the natural resources for the benefit of the mankind”. Today, the same objective is expected to be realised (i) by complying with the desire and expectations of the people concerned and (ii) without wasting the resources and within the sustainability principles. This change has required an interaction between engineering and social and administrative sciences. Some subjects at the borderline between civil engineering and social and administrative sciences have consequently been included in the area of civil engineering. Teknik Dergi defines its scope in line with this understanding. However, it requires the papers falling in the borderline to have a significant component of civil engineering.