Paper Title:
Preparation and Performance of Sulfate Resistance Cement-Based Material
  Abstract

To discuss prevention of sulfate attack, especially thaumasite form of sulfate attack (TSA), sulfate resistance cement based material (SRM) were designed and prepared, and properties of which were investigated systematically. Micro-analytical techniques were introduced to identify erosion substances especially thaumasite, namely Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM) equipped with X-ray energy dispersive spectrometer(EDS). Results show that SRM have better sulfate resistance, as well as TSA resistance, when exposed to aggressive environment with 33800 ppm mass concentration of SO42- in magnesium sulfate solution at 5°C±2°C. When immersed in magnesium sulfate solution for 40 weeks, compressive strength and tensile strength of SRM are still higher than their initial, and those of control specimen are lower by 33.7%, 36.5% compared to its initial. Surface erosion substances of SRM named S1 are ettringite and gypsum, while those of control specimen are ettringite, gypsum, thaumasite and brucite.

  Info
Periodical
Key Engineering Materials (Volumes 400-402)
Edited by
Jingsi Huo, Yan Xiao, Zongjin Li and Shuaib Ahmad
Pages
195-201
DOI
10.4028/www.scientific.net/KEM.400-402.195
Citation
F. C. Zhang, B. G. Ma, G. Yin, Y. Y. Wu, Y. C. Zhu, "Preparation and Performance of Sulfate Resistance Cement-Based Material", Key Engineering Materials, Vols. 400-402, pp. 195-201, 2009
Online since
October 2008
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Price
$32.00
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