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Method for preparing high-performance cement-based material from carbonized high-belite sulphoaluminate cement
The invention relates to a method for preparing a high-performance cement-based material by using carbonized high-belite sulphoaluminate cement, which mainly comprises the following steps: (1) mixing high-belite sulphoaluminate cement with water, and introducing a precise dosage of carbon dioxide in the stirring process, with the median particle size of the high-belite sulphoaluminate cement being less than or equal to 18 [mu] m, the median particle size of the high-belite sulphoaluminate cement being less than or equal to 18 [mu] m, the carbon dioxide being less than or equal to 20 [mu] m, and the carbon dioxide being less than or equal to 20 [mu] m; the content of dicalcium silicate is 35-45 wt.%, and the content of anhydrous calcium sulphoaluminate is 20-40 wt.%. And (2) adding Portland cement and water into the cement paste stirred in the step (1), and uniformly stirring, wherein the content of calcium oxide in the Portland cement is 68-75wt%. According to the invention, the reaction of the high belite sulphoaluminate cement is promoted by carbon dioxide, and the high belite sulphoaluminate cement is mixed into the Portland cement, so that the hydration product hydrated calcium silicate gel (C-S-H) of the cement can be strengthened, and hydrated calcium aluminosilicate gel (C-A-S-H) with longer chain length can be generated, thereby achieving the effects of improving the performance of the cement-based material and sealing and storing carbon dioxide.
本发明涉及一种利用碳化的高贝利特硫铝酸盐水泥制备高性能水泥基材料的方法，主要包括以下步骤：(1)将高贝利特硫铝酸盐水泥与水混合，并在搅拌过程中通入精确剂量的二氧化碳，所述高贝利特硫铝酸盐水泥的中值粒径≤18μm，硅酸二钙含量为35‑45wt.％，无水硫铝酸钙含量为20‑40wt.％。(2)向步骤(1)搅拌完成的水泥浆体中添加硅酸盐水泥和水并搅拌均匀，所述硅酸盐水泥氧化钙含量为68‑75wt.％。本发明通过二氧化碳促进高贝利特硫铝酸盐水泥反应并混掺进硅酸盐水泥内，可强化水泥的水化产物水化硅酸钙凝胶(C‑S‑H)，同时产生链长更长的水化硅铝酸钙凝胶(C‑A‑S‑H),可达到提高水泥基材料性能及封存二氧化碳的效果。
Method for preparing high-performance cement-based material from carbonized high-belite sulphoaluminate cement
The invention relates to a method for preparing a high-performance cement-based material by using carbonized high-belite sulphoaluminate cement, which mainly comprises the following steps: (1) mixing high-belite sulphoaluminate cement with water, and introducing a precise dosage of carbon dioxide in the stirring process, with the median particle size of the high-belite sulphoaluminate cement being less than or equal to 18 [mu] m, the median particle size of the high-belite sulphoaluminate cement being less than or equal to 18 [mu] m, the carbon dioxide being less than or equal to 20 [mu] m, and the carbon dioxide being less than or equal to 20 [mu] m; the content of dicalcium silicate is 35-45 wt.%, and the content of anhydrous calcium sulphoaluminate is 20-40 wt.%. And (2) adding Portland cement and water into the cement paste stirred in the step (1), and uniformly stirring, wherein the content of calcium oxide in the Portland cement is 68-75wt%. According to the invention, the reaction of the high belite sulphoaluminate cement is promoted by carbon dioxide, and the high belite sulphoaluminate cement is mixed into the Portland cement, so that the hydration product hydrated calcium silicate gel (C-S-H) of the cement can be strengthened, and hydrated calcium aluminosilicate gel (C-A-S-H) with longer chain length can be generated, thereby achieving the effects of improving the performance of the cement-based material and sealing and storing carbon dioxide.
本发明涉及一种利用碳化的高贝利特硫铝酸盐水泥制备高性能水泥基材料的方法，主要包括以下步骤：(1)将高贝利特硫铝酸盐水泥与水混合，并在搅拌过程中通入精确剂量的二氧化碳，所述高贝利特硫铝酸盐水泥的中值粒径≤18μm，硅酸二钙含量为35‑45wt.％，无水硫铝酸钙含量为20‑40wt.％。(2)向步骤(1)搅拌完成的水泥浆体中添加硅酸盐水泥和水并搅拌均匀，所述硅酸盐水泥氧化钙含量为68‑75wt.％。本发明通过二氧化碳促进高贝利特硫铝酸盐水泥反应并混掺进硅酸盐水泥内，可强化水泥的水化产物水化硅酸钙凝胶(C‑S‑H)，同时产生链长更长的水化硅铝酸钙凝胶(C‑A‑S‑H),可达到提高水泥基材料性能及封存二氧化碳的效果。
Method for preparing high-performance cement-based material from carbonized high-belite sulphoaluminate cement
一种利用碳化的高贝利特硫铝酸盐水泥制备高性能水泥基材料的方法
LIN ZHONGCAI (author) / LUO SHUANG (author)
2023-03-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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