Waste-derived sodium silicates (SSs) were synthesised from rice husk ash (RHA) to produce alkali activated materials (AAMs) using fly ash and slag as precursors. The effects of these SSs on the structural build-up were investigated by monitoring the evolution of the viscoelasticity, ultrasonic pulse waves, setting time, and infrared spectra. Two types of RHA derived SSs (filtered SS and unfiltered SS) were prepared to investigate the effect of the undissolved residue on the hardening process. The derived SS contained a large portion of monomer silicate species. The results showed that the structural build-up mechanism was comparable between the AAMs activated by the filtered SS and a commercial SS. The unfiltered SS increased the yield stress of the paste by up to 10 times. However, the residues in the unfiltered SS had insignificant impacts on the gel formation and compressive strength when using identical SiO₂/Na₂O and Na₂O/binder ratios in the mix design.

从稻壳灰 (RHA) 合成废物衍生的硅酸钠 (SS)，以粉煤灰和矿渣为前驱体生产碱活化材料 (AAM)。通过监测粘弹性、超声波脉冲波、凝固时间和红外光谱的演变，研究了这些 SS 对结构堆积的影响。制备了两种类型的 RHA 衍生 SS（过滤的 SS 和未过滤的 SS）以研究未溶解残留物对硬化过程的影响。衍生的 SS 含有大部分单体硅酸盐物质。结果表明，由过滤的 SS 和商业 SS 激活的 AAM 之间的结构积聚机制是可比的。未过滤的 SS 使浆料的屈服应力增加了 10 倍。然而，混合设计中的₂ /Na ₂ O 和 Na ₂ O/粘合剂比率。