A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for inhibiting delayed coagulation of cement containing lead and zinc
The invention belongs to the field of building materials, and particularly relates to a method for inhibiting delayed coagulation of lead-zinc-containing cement, calcium hydroxide is mixed into the lead-zinc-containing cement, and hydroxyl ions released in the hydration process are coprecipitated with lead ions and zinc ions, so that the delayed coagulation effect is inhibited. Compared with the prior art, the invention solves the problem that the mechanical properties of the cement-based material are affected by delayed coagulation due to inhibition of cement hydration by lead ions and zinc ions. The calcium hydroxide is added, the solubility product of lead hydroxide and zinc hydroxide formed based on the reaction of hydroxyl ions, lead ions and zinc ions is lower than the solubility product of the calcium hydroxide, and inhibition of the delayed coagulation effect on the zinc ions and the lead ions is achieved.
本发明属于建筑材料领域，尤其是涉及一种抑制含铅锌水泥缓凝的方法，向含铅锌水泥中混入氢氧化钙，通过水化过程中释放氢氧根离子与铅离子和锌离子发生共沉淀，实现对缓凝作用的抑制。与现有技术相比，本发明解决了铅离子和锌离子会抑制水泥水化，存在缓凝的问题，进而影响水泥基材料的力学性能。本发明通过添加氢氧化钙，基于氢氧根离子与铅离子和锌离子反应形成的氢氧化铅和氢氧化锌的溶度积低于氢氧化钙的溶度积，实现对锌离子和铅离子具有的缓凝作用的抑制。
Method for inhibiting delayed coagulation of cement containing lead and zinc
The invention belongs to the field of building materials, and particularly relates to a method for inhibiting delayed coagulation of lead-zinc-containing cement, calcium hydroxide is mixed into the lead-zinc-containing cement, and hydroxyl ions released in the hydration process are coprecipitated with lead ions and zinc ions, so that the delayed coagulation effect is inhibited. Compared with the prior art, the invention solves the problem that the mechanical properties of the cement-based material are affected by delayed coagulation due to inhibition of cement hydration by lead ions and zinc ions. The calcium hydroxide is added, the solubility product of lead hydroxide and zinc hydroxide formed based on the reaction of hydroxyl ions, lead ions and zinc ions is lower than the solubility product of the calcium hydroxide, and inhibition of the delayed coagulation effect on the zinc ions and the lead ions is achieved.
本发明属于建筑材料领域，尤其是涉及一种抑制含铅锌水泥缓凝的方法，向含铅锌水泥中混入氢氧化钙，通过水化过程中释放氢氧根离子与铅离子和锌离子发生共沉淀，实现对缓凝作用的抑制。与现有技术相比，本发明解决了铅离子和锌离子会抑制水泥水化，存在缓凝的问题，进而影响水泥基材料的力学性能。本发明通过添加氢氧化钙，基于氢氧根离子与铅离子和锌离子反应形成的氢氧化铅和氢氧化锌的溶度积低于氢氧化钙的溶度积，实现对锌离子和铅离子具有的缓凝作用的抑制。
Method for inhibiting delayed coagulation of cement containing lead and zinc
一种抑制含铅锌水泥缓凝的方法
XU LINGLIN (author) / SUN ZIXUAN (author) / WU KAI (author) / ZHANG GUOFANG (author)
2024-03-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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