Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sodium-free concrete accelerator as well as preparation method and application thereof
The invention provides a sodium-free concrete accelerator as well as a preparation method and application thereof. The sodium-free concrete accelerator comprises a combination of hydrofluoric acid, a fluorine ion shielding agent, aluminum sulfate and a neutralizing agent in specific parts. According to the sodium-free concrete accelerator, specific parts of the fluorine ion shielding agent are added, and the fluorine ion shielding agent is used for complexing fluorine ions, so that the content of free fluorine ions in a system is effectively reduced, the environmental friendliness of the sodium-free concrete accelerator is improved, the corrosion of the sodium-free concrete accelerator to a concrete skeleton is reduced, and the service life of the sodium-free concrete accelerator is prolonged. Further, the early strength and the long-term strength of a concrete member containing the sodium-free concrete accelerator are effectively improved; moreover, no caustic soda or caustic soda flakes are added into the sodium-free concrete, so that the sodium-free concrete is more suitable for new railway standards of concrete accelerators.
本发明提供一种无钠混凝土速凝剂及其制备方法和应用，所述无钠混凝土速凝剂包括特定份数的氢氟酸、氟离子屏蔽剂、硫酸铝和中和剂的组合；所述无钠混凝土速凝剂通过添加特定份数的氟离子屏蔽剂，利用所述氟离子掩蔽剂络合氟离子，有效降低了体系中游离氟离子的含量，提高了所述无钠混凝土速凝剂的环境友好性，降低了其对混凝土骨架的腐蚀性，进而有效提高了包含所述无钠混凝土速凝剂的混凝土构件的早期强度和长期强度；且由于所述无钠混凝土中不添加烧碱和片碱，更加适用于混凝土速凝剂铁路新标准。
Sodium-free concrete accelerator as well as preparation method and application thereof
The invention provides a sodium-free concrete accelerator as well as a preparation method and application thereof. The sodium-free concrete accelerator comprises a combination of hydrofluoric acid, a fluorine ion shielding agent, aluminum sulfate and a neutralizing agent in specific parts. According to the sodium-free concrete accelerator, specific parts of the fluorine ion shielding agent are added, and the fluorine ion shielding agent is used for complexing fluorine ions, so that the content of free fluorine ions in a system is effectively reduced, the environmental friendliness of the sodium-free concrete accelerator is improved, the corrosion of the sodium-free concrete accelerator to a concrete skeleton is reduced, and the service life of the sodium-free concrete accelerator is prolonged. Further, the early strength and the long-term strength of a concrete member containing the sodium-free concrete accelerator are effectively improved; moreover, no caustic soda or caustic soda flakes are added into the sodium-free concrete, so that the sodium-free concrete is more suitable for new railway standards of concrete accelerators.
本发明提供一种无钠混凝土速凝剂及其制备方法和应用，所述无钠混凝土速凝剂包括特定份数的氢氟酸、氟离子屏蔽剂、硫酸铝和中和剂的组合；所述无钠混凝土速凝剂通过添加特定份数的氟离子屏蔽剂，利用所述氟离子掩蔽剂络合氟离子，有效降低了体系中游离氟离子的含量，提高了所述无钠混凝土速凝剂的环境友好性，降低了其对混凝土骨架的腐蚀性，进而有效提高了包含所述无钠混凝土速凝剂的混凝土构件的早期强度和长期强度；且由于所述无钠混凝土中不添加烧碱和片碱，更加适用于混凝土速凝剂铁路新标准。
Sodium-free concrete accelerator as well as preparation method and application thereof
一种无钠混凝土速凝剂及其制备方法和应用
TAN QIANGQIANG (Autor:in) / WANG PENGFEI (Autor:in) / CHENG JINGYU (Autor:in)
26.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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