A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a waste concrete mixture recycling method, and the method comprises the steps: uniformly dispersing perfluoroethyl acrylate in water, adding nano-silica, carrying out ultrasonic treatment for 1-2 h at the ultrasonic power of 300-500 W, carrying out spray drying, adding the mixture into an ethanol aqueous solution, sequentially adding an emulsifier and sodium dodecyl benzene sulfonate under the stirring state, carrying out stirring, and performing ultrasonic treatment to obtain the concrete reinforcing agent; crushing waste concrete, performing screening by adopting a vibrating screen with the grading of 10-20, adding a concrete reinforcing agent after screening, performing drying, and standing for 2-4 days to obtain pretreated waste concrete; uniformly stirring natural latex, bentonite, an organic flocculant and a high-efficiency water reducing agent at normal temperature, adding polyacrylonitrile fibers, and performing continuous stirring to obtain a premix; uniformly mixing the pretreated waste concrete, the premix, the steel slag and the cement at normal temperature, adding the sand, the additive and the water, and performing stirring to obtain the premixed concrete.
本发明公开了一种废弃混凝土拌合物的再生利用方法，包括如下步骤：将全氟乙基丙烯酸酯于水中分散均匀，加入纳米二氧化硅超声1‑2h，超声功率为300‑500W，喷雾干燥，加入至乙醇水溶液中，搅拌状态下依次加入乳化剂、十二烷基苯磺酸钠，超声处理得到混凝土增强剂；将废弃混凝土粉碎，再采用级配为10‑20振动筛进行筛选，筛分结束后加入混凝土增强剂，干燥，静置2‑4天，得到预处理废弃混凝土；将天然乳胶、膨润土、有机絮凝剂、高效减水剂常温搅拌均匀，加入聚丙烯腈纤维继续搅拌得到预混料；在常温状态下，将预处理废弃混凝土、预混料、钢渣、水泥混合均匀，加入砂子、外加剂、水进行搅拌得到预拌混凝土。
The invention discloses a waste concrete mixture recycling method, and the method comprises the steps: uniformly dispersing perfluoroethyl acrylate in water, adding nano-silica, carrying out ultrasonic treatment for 1-2 h at the ultrasonic power of 300-500 W, carrying out spray drying, adding the mixture into an ethanol aqueous solution, sequentially adding an emulsifier and sodium dodecyl benzene sulfonate under the stirring state, carrying out stirring, and performing ultrasonic treatment to obtain the concrete reinforcing agent; crushing waste concrete, performing screening by adopting a vibrating screen with the grading of 10-20, adding a concrete reinforcing agent after screening, performing drying, and standing for 2-4 days to obtain pretreated waste concrete; uniformly stirring natural latex, bentonite, an organic flocculant and a high-efficiency water reducing agent at normal temperature, adding polyacrylonitrile fibers, and performing continuous stirring to obtain a premix; uniformly mixing the pretreated waste concrete, the premix, the steel slag and the cement at normal temperature, adding the sand, the additive and the water, and performing stirring to obtain the premixed concrete.
本发明公开了一种废弃混凝土拌合物的再生利用方法，包括如下步骤：将全氟乙基丙烯酸酯于水中分散均匀，加入纳米二氧化硅超声1‑2h，超声功率为300‑500W，喷雾干燥，加入至乙醇水溶液中，搅拌状态下依次加入乳化剂、十二烷基苯磺酸钠，超声处理得到混凝土增强剂；将废弃混凝土粉碎，再采用级配为10‑20振动筛进行筛选，筛分结束后加入混凝土增强剂，干燥，静置2‑4天，得到预处理废弃混凝土；将天然乳胶、膨润土、有机絮凝剂、高效减水剂常温搅拌均匀，加入聚丙烯腈纤维继续搅拌得到预混料；在常温状态下，将预处理废弃混凝土、预混料、钢渣、水泥混合均匀，加入砂子、外加剂、水进行搅拌得到预拌混凝土。
Recycling method of waste concrete mixture
一种废弃混凝土拌合物的再生利用方法
WEI LINYAN (author)
2021-05-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME