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掺入富SiO2的辅助胶凝材料会影响其水化产物的数量和种类,也会影响这类材料的体积、孔隙率及耐久性。在常用的替代水平下,水化产物的主要变化是C-S-H凝胶中Ca/Si比的下降和大量氢氧化钙的消耗减少。而掺入富Al2O3的辅助胶凝材料则会提高C-S-H凝胶对铝的吸收,并且会增加铝酸盐水化产物的数量。目前,尽管对C-S-H凝胶的认识还不是很透彻,但这些在矿相组成中的变化还是能够通过热力学模型试验发现的。在早期,“填充效应”促使熟料相的反应增加。辅助胶凝材料的反应随后进行,并随着pH值和温度的升高而加快,同时其组成、细度和玻璃相数量也发挥重要作用。由于辅助胶凝材料涵盖范围广和多样性的特点,因此探讨其组成、颗粒大小、暴露的外在环境条件(比如温度或相对湿度)之间的一般规律关系变得更加重要。
The incorporation of SiO 2 -rich auxiliary cementitious materials affects the amount and type of hydration products, as well as the volume, porosity and durability of such materials. At commonly used alternative levels, the major changes in hydration products are a decrease in Ca / Si ratio in C-S-H gel and a reduction in the consumption of large amounts of calcium hydroxide. The incorporation of Al2O3-rich secondary cementitious materials increases the absorption of aluminum by C-S-H gel and increases the amount of aluminate hydration products. At present, although the understanding of C-S-H gel is not yet fully understood, these changes in the mineral assemblage can still be found through thermodynamic model tests. In the early days, the “fill-in effect” increased the clinker phase response. The reaction of the secondary cementitious material is followed by an increase of pH and temperature, and its composition, fineness and the amount of glass phase also play an important role. Due to the wide range and diversity of secondary cementitious materials, it is of paramount importance to explore the general laws of composition, particle size, and exposure to external environmental conditions such as temperature or relative humidity.