Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of concrete expanding agent
The invention relates to a preparation method of a concrete expanding agent, and belongs to the technical field of concrete. Aluminum ash and barium oxide are used as basic raw materials and dissolved through nitric acid, then polyacrylamide is used for flocculation, metal ions in the aluminum ash and barium oxide are in full contact and then stirred with mixed iron salt, and porous high-activity aluminum oxide particles loaded with barium and magnetic particles are formed under the action of urea and a pore-forming agent, and then are subjected to high-temperature steam curing with the ardealite and the calcium oxide, the formed calcium hydroxide and calcium oxide are loaded in the porous particles and then wrapped with the wrapping agent, and therefore the concrete expanding agent is obtained, and the problem that the continuous stability of the expanding effect of the concrete expanding agent is poor is effectively solved.
本发明涉及一种混凝土膨胀剂的制备方法，属于混凝土技术领域。本发明以铝灰、氧化钡作为基础原料，通过硝酸进行溶解，随后利用聚丙烯酰胺进行絮凝，使其中的金属离子进行充分的接触，再与混合铁盐进行搅拌，通过与尿素、造孔剂的作用，形成负载钡及磁性颗粒的多孔高活性氧化铝颗粒，再与磷石膏及氧化钙进行高温蒸汽养护，是形成的氢氧化钙及氧化钙负载在多孔颗粒内部，在使用包裹剂进行包裹，从而得到混凝土膨胀剂，进而有效解决了混凝土膨胀剂的膨胀效果的持续稳定性较差的问题。
Preparation method of concrete expanding agent
The invention relates to a preparation method of a concrete expanding agent, and belongs to the technical field of concrete. Aluminum ash and barium oxide are used as basic raw materials and dissolved through nitric acid, then polyacrylamide is used for flocculation, metal ions in the aluminum ash and barium oxide are in full contact and then stirred with mixed iron salt, and porous high-activity aluminum oxide particles loaded with barium and magnetic particles are formed under the action of urea and a pore-forming agent, and then are subjected to high-temperature steam curing with the ardealite and the calcium oxide, the formed calcium hydroxide and calcium oxide are loaded in the porous particles and then wrapped with the wrapping agent, and therefore the concrete expanding agent is obtained, and the problem that the continuous stability of the expanding effect of the concrete expanding agent is poor is effectively solved.
本发明涉及一种混凝土膨胀剂的制备方法，属于混凝土技术领域。本发明以铝灰、氧化钡作为基础原料，通过硝酸进行溶解，随后利用聚丙烯酰胺进行絮凝，使其中的金属离子进行充分的接触，再与混合铁盐进行搅拌，通过与尿素、造孔剂的作用，形成负载钡及磁性颗粒的多孔高活性氧化铝颗粒，再与磷石膏及氧化钙进行高温蒸汽养护，是形成的氢氧化钙及氧化钙负载在多孔颗粒内部，在使用包裹剂进行包裹，从而得到混凝土膨胀剂，进而有效解决了混凝土膨胀剂的膨胀效果的持续稳定性较差的问题。
Preparation method of concrete expanding agent
一种混凝土膨胀剂的制备方法
TAN GUIHONG (Autor:in)
06.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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