文章基本信息

标题：Different aggressive media influence related to selected characteristics of concrete composites investigation
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作者：Vlasta Ondrejka Harbulakova ; Adriana Estokova ; Nadezda Stevulova 等
期刊名称：INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING
印刷版ISSN：2008-9163
出版年度：2014
卷号：5
期号：2-3
页码：1-6
DOI：10.1007/s40095-014-0082-8
语种：English
出版社：ISLAMIC AZAD UNIVERSITY, SOUTH TEHRAN BRANCH
摘要：AbstractThe loss of mass of concrete matrix and subsequent corrosion of concrete has been reported very often. Aggressive liquids such acids, bases, solutions of salts or aggressive gases as well as microorganisms penetrate the concrete and cause deterioration and biodeterioration, respectively. Presented paper is aimed at investigation of concrete corrosion (chemical as well as biologically induced) activated by influence of different aggressive media. Concrete cylinder samples of a 32 mm diameter and 15 mm height were formed as a drilled core from prepared concrete cubes. Concrete samples were exposed to different aggressive media under laboratory conditions (acid mine drainage, cultivation media for different bacteria species, sulphuric acid, aluminium sulphate) as well as in situ (waste water of sewage system in Kosice city) for 3 months. Influence of aggressive media and sulphur-oxidising and sulphate-reducing bacteria on concrete samples has been determined in terms of weight and surface changes of investigated concrete samples and leaching of the selected ions. The weight changes varied in the range 0.04–3.7 %. The visual changes of samples surface were observed. Content of Ca, Si and Fe ions in leachates were measured by X-ray fluorescence methods. Higher percentage of calcium ions released has been measured comparing to silicon ions in all media except for distilled water. The results of elements releasing correspond to results of weight changes of investigated concrete samples.
关键词：KeywordsEnBiocorrosionLeachingConcreteSRBX-ray fluorescence analysis