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| 废弃砖粉基地聚合物配比优化与性能研究 |
| Study on the Proportion Optimization and Performance Research of Waste Brick Powder Geopolymer |
| 投稿时间：2025-09-10 修订日期：2025-10-26 |
| DOI： |
| 中文关键词: 正交试验、地聚合物、废弃砖粉、力学性能 |
| 英文关键词: Orthogonal test, geopolymer, waste brick powder, mechanical properties |
| 基金项目:长期碳化作用下地聚合物固化疏浚淤泥的稳定机理研究 |
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| 中文摘要: |
| 研究采用正交试验法，选用碱激发剂模数、碱含量以及水胶比作为变量因素，设置四个水平，对废弃砖粉基地聚合物在高温养护条件下（60°）的流动性、抗压强度与抗折强度等性能指标的变化规律进行探讨。试验结果表明，当龄期为28d时，各因素对废弃砖粉基地聚合物抗压、抗折强度的影响显著性排序相同，均为水胶比＞碱含量＞模数；当碱激发剂模数为1.5、碱含量为1.0、水胶比为0.4时，地聚合物抗压、抗折强度最高，即抗压强度为23.4 MPa，抗折强度为5.4 MPa。三因素中，水胶比对地聚合物流动度的影响最为显著，流动度随水胶比的增大持续增加，当水胶比为0.55时，各地聚合物试样的流动度均大于300 mm。 |
| 英文摘要: |
| This study employed an orthogonal experimental design, with modulus of alkali activator, alkali content, and water-to-binder ratio selected as variable factors at four levels each, to investigate the variation patterns in workability, compressive strength, and flexural strength of waste brick powder-based geopolymer under high-temperature curing conditions (60°C). The experimental results indicate that at 28 days of curing, the order of significance of each factor affecting the compressive and flexural strength of the geopolymer was consistent: water-to-binder ratio > alkali content > modulus. The highest compressive and flexural strengths were achieved when the modulus of alkali activator was 1.5, alkali content was 1.0, and water-to-binder ratio was 0.4, with corresponding values of 23.4 MPa and 5.4 MPa, respectively. Among the three factors, the water-to-binder ratio had the most significant impact on the fluidity of the geopolymer, with fluidity continuously increasing as the water-to-binder ratio rose. At a water-to-binder ratio of 0.55, the fluidity of all geopolymer specimens exceeded 300 mm. |
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