硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (7): 2324-2334.DOI: 10.16552/j.cnki.issn1001-1625.2026.0034
杨进1,2(
), 刘潇1,2, 贺行洋1,2(
), 苏英1,2, 王金付3
收稿日期:2026-01-11
修订日期:2026-02-09
出版日期:2026-07-15
发布日期:2026-08-13
通信作者:
贺行洋,博士,教授。E-mail:hexycn@163.com作者简介:杨 进(1989—),男,博士,教授。主要从事新型低碳与功能型水泥基材料的研究。E-mail:jinyang@hbut.edu.cn
基金资助:
YANG Jin1,2(
), LIU Xiao1,2, HE Xingyang1,2(
), SU Ying1,2, WANG Jinfu3
Received:2026-01-11
Revised:2026-02-09
Published:2026-07-15
Online:2026-08-13
摘要:
为系统研究高吸水树脂(SAP)在水泥基材料环境中的吸水行为差异,本文选取聚丙烯酸钠型(AA-SAP)与聚丙烯酰胺型(AM-SAP)两类典型树脂,重点考察胶凝材料类型、聚羧酸减水剂(PCE)掺量、搅拌速率、环境温度及外部压力对其吸水行为的影响。结果表明,AA-SAP借助离子型结构产生的静电斥力,吸水速率显著高于依赖氢键作用的AM-SAP。在地聚物等高离子强度孔隙液中,SAP溶胀受到明显抑制。PCE掺量对AA-SAP的吸水能力存在最佳响应区间,而AM-SAP的吸水能力随PCE掺量增加持续下降。提高搅拌速率可借助伯努利效应促进溶胀,AA-SAP响应更显著。升温能促进两类SAP的溶胀,进而提高吸水能力,外部压力则会抑制两类SAP的网络扩张,导致吸水倍率下降。SAP的吸水行为由其分子结构与外界环境共同调控,AA-SAP适用于低离子强度、中低剪切或温升条件,而AM-SAP在高离子强度、高压环境中表现出更优的稳定性。研究结果对于不同类型SAP在混凝土中的应用具有理论和实际指导意义。
中图分类号:
杨进, 刘潇, 贺行洋, 苏英, 王金付. 水泥基材料中高吸水树脂吸水行为的敏感性研究[J]. 硅酸盐通报, 2026, 45(7): 2324-2334.
YANG Jin, LIU Xiao, HE Xingyang, SU Ying, WANG Jinfu. Sensitivity of Absorption Behavior of Superabsorbent Polymers in Cementitious Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(7): 2324-2334.
图2 在不同胶凝材料体系孔溶液中AA-SAP和AM-SAP吸水动力学曲线
Fig.2 Absorption kinetics curves of AA-SAP and AM-SAP in pore solutions of different cementitious material systems
图3 在不同胶凝材料体系孔溶液中AA-SAP和AM-SAP吸水溶胀时间及最大吸水倍率
Fig.3 Absorption expansion time and maximum absorptivity of AA-SAP and AM-SAP in pore solutions of different cementitious material systems
| Cementitious material system | pH value | Conductivity/(mS·cm-1) |
|---|---|---|
| FA-cement | 12.75 | 20.82 |
| SF-cement | 12.76 | 24.05 |
| Geopolymer | 13.33 | 55.70 |
表1 不同胶凝材料体系孔隙溶液电导率和pH值
Table 1 Conductivity and pH value of pore solution of different cementitious material systems
| Cementitious material system | pH value | Conductivity/(mS·cm-1) |
|---|---|---|
| FA-cement | 12.75 | 20.82 |
| SF-cement | 12.76 | 24.05 |
| Geopolymer | 13.33 | 55.70 |
图5 在不同PCE掺量的孔溶液中AA-SAP和AM-SAP的吸水溶胀时间及最大吸水倍率
Fig.5 Absorption expansion time and maximum absorptivity of AA-SAP and AM-SAP in pore solutions with different PCE content
图7 在不同搅拌速率下的孔溶液中AA-SAP和AM-SAP吸水溶胀时间及最大吸水倍率
Fig.7 Absorption expansion time and maximum absorptivity of AA-SAP and AM-SAP in pore solutions at different stirring rates
图9 在不同环境温度下的孔溶液中AA-SAP和AM-SAP吸水溶胀时间及最大吸水倍率
Fig.9 Absorption expansion time and maximum absorptivity of AA-SAP and AM-SAP in pore solutions at different environmental temperatures
图11 在不同压力下的孔溶液中AA-SAP和AM-SAP吸水溶胀时间及最大吸水倍率
Fig.11 Absorption expansion time and maximum absorptivity of AA-SAP and AM-SAP in pore solutions at different pressures
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