硅酸盐通报2023，Vol.42Issue(12)：4224-4232,9.
高吸水性树脂对高延性水泥基材料性能的影响
Effect of Superabsorbent Polymer on Properties of Engineered Cementitious Composites
摘要
Abstract
Superabsorbent polymer(SAP)was added into engineered cementitious composites(ECC)slurry through two methods of non-soaked mixing and pre-soaked mixing,and the effects of SAP on the ultimate tensile strain,tensile strength,restrained shrinkage and toughness of ECC under different dosages and mixing methods were analyzed.The results show that non-soaked mixing significantly enhances the plastic viscosity and reduces the flowability of ECC slurry upon SAP addition.Conversely,the pre-soaked mixing method decreases plastic viscosity and improves flowability,facilitating the molding process of ECC slurry.The addition of SAP to ECC through the non-soaked mixing method exhibits higher initial cracking strength and tensile strength,along with better toughness.The addition of SAP to ECC through the pre-soaked mixing method results in increased ultimate tensile strain in ECC and a more effective improvement in the performance of shrinkage restraint.SAP significantly enhances the tensile strain capacity and toughness of ECC specimens.All ECC specimens with SAP exhibit favorable ductility,with ultimate tensile strain exceeding 3% .Compared to the control group,the ultimate tensile strain of ECC with SAP has increased by 62.0% to 99.0% .关键词
高延性水泥基材料/高吸水性树脂/拌合方式/极限拉伸应变/弯曲挠度/约束收缩/塑性黏度Key words
engineered cementitious composite/superabsorbent polymer/mixing method/ultimate tensile strain/flexural deflection/restrained shrinkage/plastic viscosity分类
建筑与水利引用本文复制引用
刘家宝,水中和,亓习博,李世祥,肖勋光..高吸水性树脂对高延性水泥基材料性能的影响[J].硅酸盐通报,2023,42(12):4224-4232,9.基金项目
2022年广东省中山市科技创新领军人才资助(LJ2021002) （LJ2021002）
2019年度中山市第三批科技发展专项资金(高端科研机构创新转向)(2019AG030) （高端科研机构创新转向）
