硅酸盐通报2025，Vol.44Issue(8)：2839-2848,10.DOI:10.16552/j.cnki.issn1001-1625.2025.0060
纳米TiO2改性发泡剂对泡沫混凝土性能的影响
Effect of Nano-TiO2 Modified Foaming Agent on Properties of Foam Concrete
摘要
Abstract
To address the issue of poor stability of ordinary foaming agents,nano-TiO2 was used to modify ordinary foaming agents in this paper.The effects of nano-TiO2 content on foaming multiple,sedimentation distance and bleeding rate of foaming agent were investigated,while also effect of modified foam agent on the mechanical properties and microstructure of foam concrete was analyzed.The results indicate that nano-TiO2 can effectively improve the performance of foaming agent.When with the optimum content of nano-TiO2 is 0.15％(mass fraction,the same below),the foam multiple increases by 11.93％,the 1 h sedimentation distance and 1 h bleeding rate decrease by 54.29％and 12.21％,respectively,and the average thickness of the foam liquid film is 37.86 μm.The 3 d compressive strength of foam concrete prepared by adding 0.15％nano-TiO2 is 1.637 MPa,which is 41.98％higher than that of the control group.Microscopic analysis reveals that nano-TiO2 can obviously improve the porosity of foam concrete,and promote the formation of more calcium silicate hydrate(C-S-H)gels during the curing process of foam concrete slurry,so that the mechanical properties of foam concrete are significantly improved.关键词
泡沫混凝土/纳米TiO2/泡沫稳定性/抗压强度/微观形貌/孔结构Key words
foam concrete/nano-TiO2/foam stability/compressive strength/microstructure/pore structure分类
建筑与水利引用本文复制引用
李杰,李顺凯,赵欢,曾秦威..纳米TiO2改性发泡剂对泡沫混凝土性能的影响[J].硅酸盐通报,2025,44(8):2839-2848,10.基金项目
广西重点研发计划(2021AB22157) （2021AB22157）
