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以粉煤灰和水玻璃粉体为原料制备地质聚合物干粉材料,研究不同粉煤灰基地质聚合物干粉掺量对粉煤灰基地质聚合物/水泥复合材料力学性能的影响,通过XRD和SEM分析粉煤灰和粉煤灰基地质聚合物/水泥复合材料的物相组成和微观结构。结果表明,粉煤灰基地质聚合物干粉掺量从0增加到60%,复合材料的抗折强度和抗压强度减少,折压比增加,主要是因为粉煤灰基地质聚合物常温下反应时间长,随着粉煤灰基地质聚合物干粉掺量的增加,反应产物中地质聚合物凝胶比例增加,90d后试样的折压比增加。
The effects of different fly ash-based geopolymer dry powder contents on the mechanical properties of fly ash-based geopolymer / cement composites were investigated by using fly ash and water glass powder as raw materials. The effects of different fly ash- SEM analysis of phase composition and microstructure of fly ash and fly ash-based geopolymer / cement composites. The results show that the content of dry powder of geopolymer based on fly ash increases from 0 to 60%, and the flexural strength and compressive strength of the composites decrease and the pressure-to-pressure ratio increases, which is mainly attributed to the reaction of the fly-ash-based geopolymer at room temperature For a long time, with the increase of dry powder content of geopolymer in fly ash base, the proportion of geo-polymer gel in the reaction product increased, and the pressure-reducing ratio increased after 90 days.