Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Retarded setting type high-strength iron tailing aggregate concrete and preparation method thereof
The invention provides delayed coagulation type high-strength iron tailing aggregate concrete and a preparation method thereof, and the delayed coagulation type high-strength iron tailing aggregate concrete comprises the following components in parts by weight: 200-260 parts of cement, 40-100 parts of mineral powder, 950-1150 parts of coarse aggregate, 740-900 parts of fine aggregate, 2-9 parts of nano TiO2, 3-10 parts of a water reducing agent, 2-5 parts of a retarder and 155-190 parts of water. Compared with the prior art, the waste gas iron tailings, the construction waste and other solid waste garbage can be absorbed, the beneficial effect on maintaining the stability of the ecological environment is achieved, the concrete cost can be saved, and the construction cost can be reduced. The bleeding phenomenon occurring when iron tailings are singly doped can be improved, the loss rate of concrete slump can be delayed in a high-temperature environment, and the operability of newly mixed concrete in the early stage is prolonged. By doping the nano TiO2, harmful pores in the concrete can be improved, the durability of matrix strength, impermeability, carbonization resistance, chloride ion invasion resistance and the like can be enhanced, and the concrete has the functions of purifying air, sterilizing, self-cleaning the surface and the like.
本发明提供一种缓凝型高强度铁尾矿骨料混凝土及其制备方法，包括按重量计的以下组分，水泥200~260份，矿粉40~100份，粗骨料950~1150份，细骨料740~900份，纳米TiO22~9份，减水剂3~10份，缓凝剂2~5份和水155~190份。与现有技术相比，本发明能够完成对废气铁尾矿和建筑垃圾等固废垃圾的消纳，对维护生态环境稳定具有有益效果，可节约混凝土成本，降低工程造价。可以改善单掺铁尾矿时出现的泌水现象，可在高温环境下延缓混凝土坍落度的损失速率，延长新拌混凝土前期的可操作性。纳米TiO2的掺入可以改善混凝土内部有害孔隙，增强基体强度、抗渗、抗碳化和抗氯离子侵入等耐久性，还有具有净化空气、杀菌、表面自洁等功能。
Retarded setting type high-strength iron tailing aggregate concrete and preparation method thereof
The invention provides delayed coagulation type high-strength iron tailing aggregate concrete and a preparation method thereof, and the delayed coagulation type high-strength iron tailing aggregate concrete comprises the following components in parts by weight: 200-260 parts of cement, 40-100 parts of mineral powder, 950-1150 parts of coarse aggregate, 740-900 parts of fine aggregate, 2-9 parts of nano TiO2, 3-10 parts of a water reducing agent, 2-5 parts of a retarder and 155-190 parts of water. Compared with the prior art, the waste gas iron tailings, the construction waste and other solid waste garbage can be absorbed, the beneficial effect on maintaining the stability of the ecological environment is achieved, the concrete cost can be saved, and the construction cost can be reduced. The bleeding phenomenon occurring when iron tailings are singly doped can be improved, the loss rate of concrete slump can be delayed in a high-temperature environment, and the operability of newly mixed concrete in the early stage is prolonged. By doping the nano TiO2, harmful pores in the concrete can be improved, the durability of matrix strength, impermeability, carbonization resistance, chloride ion invasion resistance and the like can be enhanced, and the concrete has the functions of purifying air, sterilizing, self-cleaning the surface and the like.
本发明提供一种缓凝型高强度铁尾矿骨料混凝土及其制备方法，包括按重量计的以下组分，水泥200~260份，矿粉40~100份，粗骨料950~1150份，细骨料740~900份，纳米TiO22~9份，减水剂3~10份，缓凝剂2~5份和水155~190份。与现有技术相比，本发明能够完成对废气铁尾矿和建筑垃圾等固废垃圾的消纳，对维护生态环境稳定具有有益效果，可节约混凝土成本，降低工程造价。可以改善单掺铁尾矿时出现的泌水现象，可在高温环境下延缓混凝土坍落度的损失速率，延长新拌混凝土前期的可操作性。纳米TiO2的掺入可以改善混凝土内部有害孔隙，增强基体强度、抗渗、抗碳化和抗氯离子侵入等耐久性，还有具有净化空气、杀菌、表面自洁等功能。
Retarded setting type high-strength iron tailing aggregate concrete and preparation method thereof
缓凝型高强度铁尾矿骨料混凝土及其制备方法
ZHAO TIANQI (Autor:in) / QIN JUAN (Autor:in) / WANG JUNYONG (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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