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首页> 外文期刊>Materials and structures >Application of Fourier transform infrared spectroscopy to study concrete degradation induced by biogenic sulfuric acid
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Application of Fourier transform infrared spectroscopy to study concrete degradation induced by biogenic sulfuric acid

机译：傅里叶变换红外光谱在研究生源硫酸引起的混凝土降解中的应用

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摘要

Fourier transform infrared spectrophotometry (FTIR) was utilized, in order to identify concrete degradation due to biogenic sulfuric acid attack. Concrete samples were exposed to electrolytes containing bio-species in laboratory simulating field conditions and FTIR spectra of the reacted concrete were analyzed for concrete phase formation. The major and minor FTIR absorption bands due to the presence of sulfate were detected in the range of 1200-1100 cm(-1) and 650-600 cm(-1), respectively. In addition FTIR spectra of the concrete samples exposed to acid-producing microorganisms show an overtone band at around 2350 cm(-1) owing to presence of sulfur containing compound in concrete. Results of scanning electron microscopy with energy-dispersive spectrometry complemented and confirmed FTIR analysis.
机译：利用傅里叶变换红外分光光度法（FTIR）来确定由于生源硫酸侵蚀而引起的混凝土降解。在实验室模拟现场条件下，将混凝土样品暴露于含有生物物种的电解质中，并分析了反应后混凝土的FTIR光谱以了解混凝土的相形成。主要和次要的FTIR吸收带由于存在硫酸盐分别在1200-1100 cm（-1）和650-600 cm（-1）范围内被检测到。此外，由于混凝土中含硫化合物的存在，暴露于产酸微生物的混凝土样品的FTIR光谱在2350 cm（-1）附近显示一个泛音带。能量色散扫描电子显微镜的结果补充并证实了FTIR分析。

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  • 来源
    《Materials and structures》 |2016年第5期|2025-2034|共10页
  • 作者

    Nasrazadani S.; Eghtesad R.; Sudoi E.; Vupputuri S.; Ramsey J. D.; Ley M. T.;

  • 作者单位

    Univ N Texas, Engn Technol Dept, Denton, TX 76207 USA;

    Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76207 USA;

    Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76207 USA;

    Oklahoma State Univ, Sch Chem Engn, 423 Engn North, Stillwater, OK 74078 USA;

    Oklahoma State Univ, Sch Chem Engn, 423 Engn North, Stillwater, OK 74078 USA;

    Sch Civil & Environm Engn, 207 Engn South, Stillwater, OK 74078 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Concrete; Sulfate attack; FTIR; SEM/EDS; Biogenic sulfuric acid corrosion;

    机译：混凝土;硫酸盐侵蚀;FTIR;SEM / EDS;生物硫酸腐蚀;

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