硅酸盐通报2023，Vol.42Issue(12)：4559-4571,13.
考虑道路层间脱空病害的地聚合物注浆材料性能研究
Properties of Geopolymer Grouting Material Considering Road Interlayer Hollowing Diseases
摘要
Abstract
The shape of road interlayer hollowing diseases is relatively flat,and the consolidated body after grouting repair is prone to bending.Therefore,it is necessary to focus on improving the toughness and bending resistance of the grouting material.Currently,there is a lack of grouting repair material which target its disease characteristics.Therefore,slag and fly ash were used as the main raw materials,vinyl acetate-ethylene copolymer redispersible powder(VAE glue powder)was added to improve the brittleness and flexural strength of geopolymer grouting material,and conduct geopolymerization reaction under the excitation of water glass which modulus adjusted by NaOH.A new type of geopolymer grouting material was developed,and the influences of factors such as VAE glue powder content on the performance of geopolymer grouting material was explored.The experimental results show that the optimal mix ratio for the comprehensive performance of the new geopolymer grouting material is 40% slag powder,60% fly ash,2% VAE glue powder,0.1% air entraining agent,2% UEA expansive agent,25% water glass,1.6 water glass modulus and 0.35 water-cement ratio.The newly developed geopolymer grouting material increases to 10.8% in flexural strength and decreases to 17.4% in brittleness,making it suitable for road interlayer hollowing diseases.The research conclusion has a certain promoting effect on promoting the development of road hidden disease repair technology and ensuring the long-term safety and stability of road operation.关键词
注浆材料/地聚合物/道路修复/层间脱空病害/VAE胶粉/抗折强度Key words
grouting material/geopolymer/road rehabilitation/interlayer hollowing disease/VAE glue powder/flexural strength分类
交通工程引用本文复制引用
赵宏昊,刘宪明,李鹏,张文亮,王凯,董坤,王俊杰,徐翼..考虑道路层间脱空病害的地聚合物注浆材料性能研究[J].硅酸盐通报,2023,42(12):4559-4571,13.基金项目
国家自然科学基金面上项目(52279115) （52279115）
山东高速集团创新研究院委托科研项目(SDGS-2022-0455-09) （SDGS-2022-0455-09）
