This study investigates the difference between the reactivity of slag in NaOH solution (w/s = 100) and in cement paste (w/b = 0.4). The reactivity of slag is much higher in NaOH solution than in cement paste. When the NaOH solution is saturated with portlandite, the rate of reaction of slag decreases to approach that in cement paste. This suggests that the slower reaction of slag in cement paste might be due to the presence of calcium ions released by the clinker phases. At 28 days, relative humidity measurements indicate that water is only present in pores less than 6 nm. Above 6 nm, hydration cannot take place due to the lack of water. From a thermodynamic point of view, the small size of water filled pores may slow down the slag reaction due to the high concentration of species in solution required for hydrate growth to balance the increase of the surface energy.

本研究调查了炉渣在 NaOH 溶液 (w/s = 100) 和水泥浆 (w/b = 0.4) 中的反应性之间的差异。炉渣在氢氧化钠溶液中的反应性比在水泥浆中高得多。当氢氧化钠溶液被硅酸盐饱和时，炉渣的反应速率降低，接近水泥浆中的反应速率。这表明水泥浆中矿渣的反应较慢可能是由于熟料相释放的钙离子的存在。在第 28 天，相对湿度测量表明水仅存在于小于 6 nm 的孔隙中。超过 6 nm，由于缺水，无法发生水合。从热力学的角度来看，