Diagnostics of air permeability of concrete in abutments of the viaduct in Płock

IF 0.5 Q4 CONSTRUCTION & BUILDING TECHNOLOGY

Roads and Bridges-Drogi i Mosty Pub Date : 2021-06-24 DOI:10.7409/RABDIM.021.010

W. Kubissa, W. Dobaczewska

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引用次数: 0

Abstract

The durability of reinforced concrete engineering structures is related to the resistance of the reinforcement cover to the penetration of aggressive liquid and gaseous media. According to Eurocode recommendations, the cover thickness should be adapted to the aggressiveness of the environment. Attempts are being made to use measurements of air perme- ability of concrete to assess the concrete integrity in the cover layer in order to detect possible imperfections in workmanship. The paper presents the results of air permeability test using the Torrent method carried out on the abutments of the road viaduct built in Plock. The abutments were made of air-entrained concrete of strength class C35/45, designed for exposure classes XC4, XD3, XF2. The air permeability test was carried out in accordance with Swiss standard SIA 262/1 to verify the quality of concrete in the structure. Air permeability measurements were also made on moulded control specimens for comparison. The usefulness of the method allowing for non-destructive verification of the cover layer uniformity in reinforced concrete structures was demonstrated.

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Płock高架桥桥台混凝土透气性诊断

钢筋混凝土工程结构的耐久性与钢筋覆盖层对腐蚀性液体和气体介质渗透的抵抗能力有关。根据欧洲规范的建议，覆盖厚度应适应环境的侵蚀性。正在尝试使用测量混凝土的透气性来评估覆盖层的混凝土完整性，以便检测工艺中可能存在的缺陷。本文介绍了用激流法对普洛克某高架桥桥台进行透气性试验的结果。桥台采用强度等级为C35/45的引气混凝土，设计暴露等级为XC4、XD3、XF2。透气性试验按照瑞士标准SIA 262/1进行，以验证结构中混凝土的质量。同时还对模制对照标本进行了透气性测量，以作比较。验证了该方法对钢筋混凝土结构覆盖层均匀性无损验证的有效性。

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来源期刊

Roads and Bridges-Drogi i Mosty CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： The quarterly journal Roads and Bridges – Drogi i Mosty is published by the Road and Bridge Research Institute since September 2012 as a bilingual English-Polish journal. From 2002 to 2012 the journal was printed under the title Drogi i Mosty. The journal mission is to promote current achievements in science and technology in the field of road and bridge engineering. The journal is intended as a forum of the exchange of innovative concepts and solutions between the researches from different countries. Original scientific and technical papers in the field of civil engineering and related engineering sciences are published. The scope of Roads and Bridges – Drogi i Mosty includes design, construction, maintenance and safe use of roads, bridges, airports and other transportation structures.