模拟自然气候条件下钢筋混凝土腐蚀速率影响因素的识别

IF 1.1 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Current Science Pub Date : 2022-12-10 DOI:10.18520/cs/v123/i11/1327-1333

Aditi Chauhan, U. Sharma

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引用次数: 1

摘要

通过裂纹萌生和扩展阶段方差分析，考察了不同参数对钢筋混凝土腐蚀速率的影响。发现水灰比(w/c)是混凝土表面裂缝发生前最显著的影响因素，其次是润湿时间。在裂纹扩展阶段，w/c比的贡献减小，而润湿时间和外部氯离子浓度的影响变得突出。30mm和60mm混凝土覆盖层对腐蚀速率影响不大。在两个阶段中，钢筋直径和钢筋间距对腐蚀速率的影响最小。

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Identifying factors influencing corrosion rate in reinforced concrete under simulated natural climate

The influence of various parameters on corrosion rate in reinforced concrete was examined using analysis of variance for crack initiation and crack propagation phases. Water–cement (w/c) ratio was found to be the most significant factor before the onset of concrete surface crack, followed by the time of wetting. In the crack propagation phase, contribution of w/c ratio reduced while time of wetting and external chloride concentration became prominent. The concrete cover values of 30 mm and 60 mm affected the corrosion rate marginally. The diameter of reinforcing steel and spacing between bars were the least contributing factors to the corrosion rate under both phases.

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来源期刊

Current Science 综合性期刊-综合性期刊

CiteScore

1.50

自引率

10.00%

发文量

审稿时长

3 months

期刊介绍： Current Science, published every fortnight by the Association, in collaboration with the Indian Academy of Sciences, is the leading interdisciplinary science journal from India. It was started in 1932 by the then stalwarts of Indian science such as CV Raman, Birbal Sahni, Meghnad Saha, Martin Foster and S.S. Bhatnagar. In 2011, the journal completed one hundred volumes. The journal is intended as a medium for communication and discussion of important issues that concern science and scientific activities. Besides full length research articles and shorter research communications, the journal publishes review articles, scientific correspondence and commentaries, news and views, comments on recently published research papers, opinions on scientific activity, articles on universities, Indian laboratories and institutions, interviews with scientists, personal information, book reviews, etc. It is also a forum to discuss issues and problems faced by science and scientists and an effective medium of interaction among scientists in the country and abroad. Current Science is read by a large community of scientists and the circulation has been continuously going up. Current Science publishes special sections on diverse and topical themes of interest and this has served as a platform for the scientific fraternity to get their work acknowledged and highlighted. Some of the special sections that have been well received in the recent past include remote sensing, waves and symmetry, seismology in India, nanomaterials, AIDS, Alzheimer''s disease, molecular biology of ageing, cancer, cardiovascular diseases, Indian monsoon, water, transport, and mountain weather forecasting in India, to name a few. Contributions to these special issues ‘which receive widespread attention’ are from leading scientists in India and abroad.