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采用短切玄武岩纤维、聚丙烯纤维、蛋白纤维(头发)和陶瓷纤维增韧碱激发矿渣/粉煤灰基地质聚合物。三点弯曲实验和力学性能结果表明玄武岩纤维的增韧效果最佳,可将其弹性模量降低39.9%;压汞仪(MIP)和扫描电镜(SEM)测试结果表明玄武岩纤维的掺入可显著改变其微观结构,孔径小于20 nm的无害孔体积含量增加,孔径大于3μm的机械孔体积含量降低,提高其密实度。玄武岩纤维可与基体发生物理复合和化学交联,而陶瓷纤维可有效阻止裂纹的扩展,聚丙烯纤维较难与基体紧密结合,蛋白纤维易于发生溶蚀或滑落。
Aggregate-activated slag / fly ash-based geopolymer with chopped basalt fibers, polypropylene fibers, protein fibers (hair) and ceramic fibers. The results of three-point bending test and mechanical test show that the basalt fiber has the best toughening effect, and the modulus of elasticity of the basalt fiber can be reduced by 39.9%. The results of MIP and SEM show that the incorporation of basalt fiber can be significant Changing its microstructure, the volume of harmless pores with the diameter less than 20 nm increased, the volume of the mechanical pores with the diameter larger than 3 μm decreased, and the density increased. Basalt fibers can be physically and chemically cross-linked with the matrix, while ceramic fibers can effectively prevent crack propagation. Polypropylene fibers are more difficult to bond tightly with the matrix and protein fibers are prone to erode or slip.