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Characteristics of silicon carbide sludge-based geopolymers
Polymer Bulletin ( IF 3.1 ) Pub Date : 2021-01-15 , DOI: 10.1007/s00289-021-03536-w
Kae-Long Lin , Kang-Wei Lo , Ta-Wui Cheng

In this study, metakaolin (MK) with silicon carbide sludge (SiC sludge) was used in the preparation of geopolymers, and its use as a structural material was demonstrated. The production of SiC sludge metakaolin-based (SCM) geopolymers was investigated by using solid/liquid (S/L) ratios of 0.4–1.0 and SiC sludge replacement levels of 0–40% to understand the effects of the geopolymerization process. The results indicated that for SCM geopolymers with SiC sludge replacement levels of 10–40% and a solid–liquid ratio of 1.0, the strength decreased from 70.02 MPa to 48.47 MPa after 56 days of curing. The heat evolution of the first exothermal peak clearly decreased from 990.6 W/g to 835.7 W/g as the SiC sludge content increased from 10 to 40%. After 56 days of curing, the mesopore content decreased from 98.94% to 95.24% in SCM geopolymers with 10% to 40% SiC sludge. After 56 days of curing, SiC sludge replacement levels of 0%, 10% and 40% increased, and the polymerization degree increased to 82.3%, 82.7% and 80.5%, respectively. At a solid–liquid ratio of 1.0, SCM geopolymers with a 10% SiC sludge content exhibited excellent mechanical properties, which accounted for the synergistic effect of the SiC sludge and MK. This study revealed that SCM geopolymers with a SiC sludge replacement level of 10% are beneficial to the geopolymerization process and that they can be used as a structural material.

中文翻译:

碳化硅污泥基地质聚合物的特性

在这项研究中,偏高岭土 (MK) 和碳化硅污泥(SiC 污泥)用于制备地质聚合物,并证明了其作为结构材料的用途。通过使用 0.4-1.0 的固/液 (S/L) 比和 0-40% 的 SiC 污泥替代水平来研究 SiC 污泥偏高岭土 (SCM) 地质聚合物的生产,以了解地质聚合过程的影响。结果表明,对于 SiC 污泥替代水平为 10-40% 和固液比为 1.0 的 SCM 地质聚合物,固化 56 天后强度从 70.02 MPa 下降到 48.47 MPa。随着 SiC 污泥含量从 10% 增加到 40%,第一个放热峰的放热明显从 990.6 W/g 下降到 835.7 W/g。固化56天后,介孔含量从98.94%下降到95%。24% 的 SCM 地质聚合物和 10% 至 40% 的 SiC 污泥。固化56天后,SiC污泥置换水平分别提高0%、10%和40%,聚合度分别提高到82.3%、82.7%和80.5%。在固液比为 1.0 时,SiC 污泥含量为 10% 的 SCM 地质聚合物表现出优异的机械性能,这说明了 SiC 污泥和 MK 的协同作用。该研究表明,SiC 污泥替代水平为 10% 的 SCM 地质聚合物有利于地质聚合过程,并且它们可以用作结构材料。SiC 污泥含量为 10% 的 SCM 地质聚合物表现出优异的力学性能,这说明了 SiC 污泥和 MK 的协同作用。该研究表明,SiC 污泥替代水平为 10% 的 SCM 地质聚合物有利于地质聚合过程,并且它们可以用作结构材料。SiC 污泥含量为 10% 的 SCM 地质聚合物表现出优异的机械性能,这说明了 SiC 污泥和 MK 的协同作用。该研究表明,SiC 污泥替代水平为 10% 的 SCM 地质聚合物有利于地质聚合过程,并且它们可以用作结构材料。
更新日期:2021-01-15
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