不同分形维数玻璃粉对胶砂强度的影响

Study on Impact of Different Fractal Dimension Waste Frosting on Mortar Strength

为研究不同分形维数玻璃粉对胶砂强度的影响,碾磨绿色废玻璃10、20、30min使其分别成为分形维数为2.375 25、2.081 70、2.967 83的粉末状态,作为辅助胶凝材料以内掺法分别替代胶砂中水泥10%、20%、30%的用量,同时以粉煤灰为参照试验,测得试件7、14、28、35、120d不同龄期的抗压强度。结果表明,不同分形维数的玻璃粉与粉煤灰掺量均为10%时对提高试件强度相对较佳;分形维数为2.967 83的玻璃粉掺量为10%时对拌合物前期强度的影响与粉煤灰作用相差无几,其后期强度影响虽微弱于粉煤灰,但强度均优于基准试件。

In order to study the impact of different fractal dimension frosting on mortor strength, green waste glass was grinded into 2.375 25, 2.081 70, 2.967 83 fractaI dimension of powder state by 10, 20 and 30 minutes. As supplementary cementing materials within the mixed method instead of cement mortar in the amount of 10%, 20% and 30%, the compressive strength in different age of 7, 14, 28, 35 and 120 days was measured by taking fly ash as reference test. The results show that when different fractal dimension of both frosting and fly ash content was 10%, the strength of specimens were relatively better; when the fractal dimension was 2.967 83 with frosting content at 10%, the impact on the early strength was the same as the fly ash mixture, and the influence on the late strength was weak than the fly ash, but it was better than the benchmark specimen.