期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 96, 期 -, 页码 383-390出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2015.08.034
关键词
Raman spectroscopy; Alkali activation; Fly ash; Iron corrosion products; Chloride
资金
- CICYT, Spain [BIA2008-05398]
- European Community
- Comunidad de Madrid [S2013/MIT-2014]
Raman spectroscopy was used to characterise the corrosion products of reinforcing steel embedded in activated fly ash mortars in the presence of 0.4% and 2% chlorides. Two alkaline solutions with different soluble silica contents were utilised to activate the fly ash. Raman spectra were obtained using two excitation wavelengths (532 and 633 nm) and making power scans to select the suitable conditions of register for each wavelength. The main steel corrosion products identified were iron oxyhydroxides with low crystallinity, goethite (alpha-FeOOH) and lepidocrocite (gamma-FeOOH). These products need to be studied using a spectrometer with the laser line of 532 nm at low powers from 0.025 to 0.25 mW or a spectrometer with the laser line of 633 nm at high power between 2.5 and 25 mW. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据