thaumasite

Based cementitious materials in the limestone powder mixed with borax to a certain extent delay Thaumasite form, but can not suppress Thaumasite formation increased with the dosage of borax, the more significant the delay formation of Thaumasite effect.

石灰石粉基胶凝材料中掺入硼砂延缓Thaumasite形成，但不能抑制Thaumasite形成，随着硼砂的掺量增加，延缓Thaumasite形成效果越显著。

As a result, it is shown that a mushy mixture consisting of thaumasite, ettringite, gypsum and calcite occurs in the residual concrete exposed to low temperature, high humidity, sulfate and carbonate for a long time.

结果表明，低温、高湿、硫酸盐和碳酸盐长期共同作用下混凝土的腐蚀产物是由硅灰石膏、钙矾石、石膏和方解石组成的一种稀泥状混合物。

X-ray diffraction, scanning electron microscope, energy dispersive spectrum and laser Raman spectrum analysis were used to identify thaumasite in paste sample stored in 10% ( in mass) of MgSO_ ( 4) solution at different temperatures.

将浸泡于不同温度的质量分数为10%的MgSO4溶液中的含石灰石粉水泥石试样进行X射线衍射分析、扫描电子显微分析、能谱分析和激光Raman光谱分析。