摘要
地聚合物因其优异的性能和潜在的应用前景而受到广泛关注。本研究首次采用响应曲面法对地聚合物的养护条件(升温速率、养护温度和养护时间)开展优化分析,并利用热重分析(TG)对微观结构进行表征。结果表明,养护温度对地聚合物抗压强度的影响最大,养护时间对抗压强度影响次之,升温速率对抗压强度的影响最小。根据TG结果可知,增加养护时间和养护温度有利于生成更多的铝硅酸盐凝胶,有助于抗压强度增长。通过优化分析,地聚合物的最佳养护条件为养护温度为90℃,养护时间为24 h,升温速率为20℃/h。在最佳养护条件下,地聚合物的抗压强度最高可达114.37 MPa。
Geopolymers have attracted increased attention,owing to their excellent properties and potential applications.This study was the first to employ the response surface methodology for optimizing and analyzing the curing conditions(heating rate,curing temperature,and curing time)of geopolymers,and the microstructure was characterised by thermogravimetric analysis(TG).Comparing the three parameters,curing temperature has the largest effect on compressive strength,and curing time has the second-largest effect on compressive strength.The heating rate has minimal effect on compressive strength.Based on the results of the TG,increasing the curing time and curing temperature facilitates the generation of more aluminosilicate gels,which is beneficial to the improvement of compressive strength.The optimum values of the curing conditions include a heating rate of 20℃/h,curing temperature of 90℃,and curing time of 24 h.Under the optimal curing conditions,the experimental compressive strength reaches up to 114.37 MPa.
作者
周丽卿
尹纪龙
朱鹏瑞
薛润泽
王亚民
ZHOU Liqing;YIN Jilong;ZHU Pengrui;XUE Runze;WANG Yamin(State Grid Gansu Provincial Electric Power Company Qingyang Power Supply Company,Qingyang 745000,China;Tianjin Institute of Water Transport Engineering,Ministry of Transport,Tianjin 300456,China)
出处
《四川建材》
2025年第12期14-18,共5页
Sichuan Building Materials
基金
中央级公益性科研院所基本科研业务费专项资金项目(TKS20230101)。
