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通过对钙基液态水硬性加固剂的研制,对潮湿环境土遗址的加固保护进行了探索性研究。X射线衍射(XRD)和扫描电镜(SEM)分析结果表明,已成功制出了潮湿土样水硬性加固所需的纳米材料。同时,研究发现,氢氧化钙在650℃下用马弗炉煅烧1.5 h后,可得到直径约50 nm、长度约200 nm的针状二次生石灰;这种二次生石灰经水消化后,会成为粒径在200～300 nm左右、大小十分均匀的扁平椭圆状纳米氢氧化钙颗粒;氧化钙在密封陈化一段时间后,也可使氢氧化钙的粒径达到纳米级。土样加固试验的结果显示,纳米石灰的乙醇分散液的渗透性优于分析纯氢氧化钙,钙基水硬性加固剂对潮湿土样的加固效果较为明显,有望成为一种适合于潮湿环境土遗址加固的新型材料。
Through the development of calcium-based hydraulic hardener, the exploratory research on the reinforcement and protection of damp-environment soil sites has been carried out. The results of X-ray diffraction (XRD) and scanning electron microscopy (SEM) show that the nanomaterials required for hydraulic reinforcement of wet soil samples have been successfully fabricated. At the same time, it was found that calcium hydroxide calcined at a temperature of 650 ° C for 1.5 h in a muffle furnace yields acicular secondary lime with a diameter of about 50 nm and a length of about 200 nm. After this secondary lime is digested by water, Become a particle size of about 200 ~ 300 nm, the size is very uniform flat oval-shaped nano-calcium hydroxide particles; calcium oxide aging in the seal for a period of time, but also allows the particle size of calcium hydroxide to nanoscale. Soil reinforcement test results show that nano-lime ethanol dispersion better than the analysis of pure calcium hydroxide, calcium-based hydraulic reinforcement of the wet soil reinforcement effect is more obvious, is expected to become a suitable wet soil Ruins reinforce new material.