碱激发剂对粉煤灰基地聚物性能影响研究

Study on the effect of alkali activator on the properties of fly ash-based geopolymer

为研究碱激发剂与液固比对地聚物工作性能和力学性能的影响,以粉煤灰为原料,进行正交试验。试验结果表明:粉煤灰基地聚物的工作性能随着地聚物液固比增大而增加,但强度却随着液固比增大而减小。激发剂浓度增大,不利于粉煤灰基地聚物良好的工作性能,但有利于其强度增大。激发剂模数增大,粉煤灰基地聚物的力学性能和工作性能呈下降趋势。本研究中粉煤灰基地聚物最大的强度能达到61.35 MPa。

To study the effect of activator properties and liquid-solid ratio on the working performance and mechanical properties of fly ash-based geopolymer,orthogonal test was performed.Test results show the working performance of fly ash-based geopolymer increases with the increase of liquid-solid ratio,however the strength decreases.The increase of activator concentration is not in favor of the performance of fly ash-based geopolymer but increases its strength.The mechanical properties and working properties of fly ash based polymers decrease with the increase of activator modulus.The strength of the fly ash-based geopolymer prepared in this research can be up to 61.35 MPa.