As traceless as a thaw of bygone snow;

The dust emission much influenced by thaw time of soil, soil wetness and the thaw period and depth of frozen soil.

沙尘暴发生依赖于土壤融化时间、土壤融化期的土壤条件和上年冬季的冻土深度。

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The regression equations of embankments height and annual maximum thaw depth of permafrost were put forward to provide evidence for disease forecast of permafrost embankments.

本文还提出路基高度与冻土年最大融深之间的回归公式，为路基病害预测提供依据。

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Flow rate which is the dominant factor, followed by the freeze-thaw temperature, moisture content, thaw depth and the number of freeze-thaw cycles.

其中流量是主导因子，其次是冻融温差、解冻深度、含水率，再者是冻融循环次数。

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With increase of thaw depth pavement displacement markedly increased.

随着融沉深度增加，路面位移显著增加。

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The application of grouting method in subgrade thaw collapse treatment of highway

灌浆法处理公路路基融陷

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Test Study on Relation Between Thaw Collapse Displacement of Medium Sand and Negative Friction of Single Pile

中砂融沉位移与单桩负摩阻力关系的试验研究

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By use of the finite element equation from Biot theory, it presents the analysis and calculation of the uneven thaw collapse and deformation of tundra subgrade, and given the reference to attaching stress calculation.

采用Biot固结理论的有限元方程，对多年冻土地区路基的不均匀融沉变形进行计算与分析，为路面融沉附加应力计算提供依据。

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It shows that construction berm has limit effect on the ground temperature characteristics of embankment such as artificial permafrost table, annual mean ground temperature and thaw bowl, however, the thaw depth well increase and annual mean ground temperature will rise.

研究结果表明：设置护道对人为上限、年平均地温及融化盘等路基地温特征影响有限，但融化深度、年平均地温均表现为增大趋势；

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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。

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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。

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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。

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Cement concrete may undergo the thaumasite form of sulfate attack when it is exposed to low temperature, high humidity, sulfate, carbonate and adequate water for a long period of time.

TSA侵蚀是水泥混凝土在低温、高湿、硫酸盐与碳酸盐长期作用下发生的一种特殊的硫酸盐侵蚀形式。

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According to the microstructure development of mortar, TSA includes the following four procedures: diffusion of ions, ettringite formation, gypsum formation and thaumasite formation.

从微观角度分析，将TSA侵蚀过程分为四个阶段：离子迁移期，钙矾石生成期，石膏生成期和碳硫硅酸钙生成期.评价的形成性问题；

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A cylinder of calcium carbonate hanging from the roof of a limestone cave. Research on Influencing Factors of Thaumasite Form of Sulfate Attack Towards Cement Based Materials

从石灰石洞的顶上悬挂的碳酸钙圆柱体。水泥基材料碳硫硅钙石型硫酸盐侵蚀影响因素研究

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The results show that the resistance of mortar to thaumasite form of sulfate attack ( TSA) increases with the reduction of water-cement ratio.

结果表明，水灰比越低，砂浆抗TSA侵蚀性能越好；

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Results show that paste containing ground limestone can be destroyed at the temperature of 0& 10 ℃ by the sulphate attack of thaumasite form.

结果表明：掺石灰石粉的水泥石在0~10℃的温度范围内，可形成碳硫硅钙石的硫酸盐侵蚀破坏。

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Dry-wet circulation and carbonation influencing on the concrete sulfate attack Thaumasite form of sulfate attack of cementitious materials

干湿交替和碳化对混凝土硫酸盐侵蚀的影响水泥基材料碳硫硅钙石型硫酸盐腐蚀

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This is the first discovery of thaumasite form of sulfate attack in China. Thaumasite form of sulfate attack on concrete

这是在我国发现的首例碳硫硅钙石型硫酸盐腐蚀。混凝土中Thaumasite硫酸盐侵蚀的形成与特征

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The sulphuric acid has eaten into these steel pipes. Thaumasite form of sulfate attack of cementitious materials

硫酸已腐蚀了这些钢管。水泥基材料碳硫硅钙石型硫酸盐腐蚀

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Effects of temperatures on thaumasite formation

温度对碳硫硅钙石形成的影响

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