矿渣胶凝材料稳定软土的微观结构

MICROSTRUCTURE OF WEAK SOIL STABILIZATION SLAG CEMENTING MATERIAL

用红外光谱、X射线衍射和热重–差示扫描分析方法研究了矿渣胶凝材料对砂土和黏土的化学稳定化过程。结果表明:以OH–和CO32–为主的化学反应是矿渣胶凝材料稳定软土的基础,土壤中层状硅酸盐黏土矿物、链状硅酸盐闪石类矿物和碳酸盐是软土化学稳定过程中的活性成分。

Chemical stabilization of sand soil and clay soil using slag cementing materials was investigated by X-ray diffraction, Fourier transform infrared spectra and thermogravimetry-differential scanning calorimetry. The results indicate that the soil stabilization by slag cementing materials can be attributed to the chemical reactions containing OH^-and CO3^2-, while layer silicate clay mineral, chain silicate amphibole mineral and carbonate are active components of the soil stabilization process.