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Calcium silicate hydrate seed crystal early strength agent and preparation method thereof
The invention belongs to the technical field of concrete admixtures, and particularly discloses a hydrated calcium silicate seed crystal early strength agent and a preparation method thereof.The preparation method comprises the following steps that a calcium source is dissolved in water to prepare a calcium source aqueous solution, and a silicon source and a dispersing agent are dissolved in water to prepare a silicon source aqueous solution; respectively injecting the calcium source aqueous solution and the silicon source aqueous solution into an impinging stream reactor through a constant-flux pump to carry out impinging mixing; and stirring and aging the collided and mixed solution in a protective atmosphere environment to obtain the hydrated calcium silicate seed crystal early strength agent. The calcium silicate hydrate seed crystal early strength agent prepared by the invention is small in particle size and good in dispersion stability, can greatly improve the early hydration and mechanical behaviors of a cement-based material, and has a very good application prospect; the technological process used in the method is simple, high in flexibility, easy to operate and convenient to implement, and raw materials are low in price and easy to obtain; the experiment is high in repeatability and easy to amplify.
本发明属于混凝土外加剂技术领域，具体公开了一种水化硅酸钙晶种早强剂及其制备方法，该制备方法包括以下步骤：将钙源溶于水中制得钙源水溶液，将硅源和分散剂溶于水中制得硅源水溶液；将所述钙源水溶液、硅源水溶液分别通过平流泵注入到撞击流反应器中进行对撞混合；所述对撞混合后的溶液在保护气氛环境下搅拌陈化，得到所述水化硅酸钙晶种早强剂。本发明制备得到的水化硅酸钙晶种早强剂颗粒尺寸小、分散稳定性好，且能大幅提高水泥基材料的早期水化与力学行为，具有很好的应用前景；本发明所使用的工艺流程简单、灵活性强、过程易于操作、便于实施，且原材料廉价易得；实验可重复性强、易于放大。
Calcium silicate hydrate seed crystal early strength agent and preparation method thereof
The invention belongs to the technical field of concrete admixtures, and particularly discloses a hydrated calcium silicate seed crystal early strength agent and a preparation method thereof.The preparation method comprises the following steps that a calcium source is dissolved in water to prepare a calcium source aqueous solution, and a silicon source and a dispersing agent are dissolved in water to prepare a silicon source aqueous solution; respectively injecting the calcium source aqueous solution and the silicon source aqueous solution into an impinging stream reactor through a constant-flux pump to carry out impinging mixing; and stirring and aging the collided and mixed solution in a protective atmosphere environment to obtain the hydrated calcium silicate seed crystal early strength agent. The calcium silicate hydrate seed crystal early strength agent prepared by the invention is small in particle size and good in dispersion stability, can greatly improve the early hydration and mechanical behaviors of a cement-based material, and has a very good application prospect; the technological process used in the method is simple, high in flexibility, easy to operate and convenient to implement, and raw materials are low in price and easy to obtain; the experiment is high in repeatability and easy to amplify.
本发明属于混凝土外加剂技术领域，具体公开了一种水化硅酸钙晶种早强剂及其制备方法，该制备方法包括以下步骤：将钙源溶于水中制得钙源水溶液，将硅源和分散剂溶于水中制得硅源水溶液；将所述钙源水溶液、硅源水溶液分别通过平流泵注入到撞击流反应器中进行对撞混合；所述对撞混合后的溶液在保护气氛环境下搅拌陈化，得到所述水化硅酸钙晶种早强剂。本发明制备得到的水化硅酸钙晶种早强剂颗粒尺寸小、分散稳定性好，且能大幅提高水泥基材料的早期水化与力学行为，具有很好的应用前景；本发明所使用的工艺流程简单、灵活性强、过程易于操作、便于实施，且原材料廉价易得；实验可重复性强、易于放大。
Calcium silicate hydrate seed crystal early strength agent and preparation method thereof
一种水化硅酸钙晶种早强剂及其制备方法
YIN SUHONG (author) / FENG XIAN (author)
2023-04-04
Patent
Electronic Resource
Chinese
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