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A platform for research: civil engineering, architecture and urbanism
Method for preparing concrete based on slag, silicon-aluminum compound and CO2 waste gas
The invention relates to a method for preparing concrete based on slag, a silicon-aluminum compound and CO2 waste gas, and belongs to the field of green concrete. Comprising the following steps: adding a certain mass of slag, a silicon-aluminum compound and water into a ball milling tank; introducing CO2 waste gas into the tank, and stopping introducing the CO2 waste gas when the gas pressure in the tank reaches the standard; and starting the ball mill, repeatedly inflating for multiple times, carrying out ball milling until the median particle size reaches the standard and CO2 is completely reacted and adsorbed by the slag, and finally preparing the concrete by using the slag mixture meeting the requirements. According to the invention, the slag is promoted to react and adsorb CO2 through doping the silicon-aluminum compound in the slag and the mechanical action of the ball mill, the hydration activity is improved, and a part of CO2 is dissolved in water during ball milling and reacts with the slag to generate carbonate; the residual CO2 is adsorbed among slag pores and participates in the reaction in the hydration process, so that the early strength of the slag concrete can be improved, the dry shrinkage slump loss of the slag concrete is reduced, and the prepared slag concrete has the characteristics of good workability, good durability and environmental protection.
本发明涉及一种基于矿渣、硅铝化合物与CO2废气制备混凝土的方法，属于绿色混凝土领域。包括：将一定质量矿渣、硅铝化合物和水投入球磨罐；向罐中通入CO2废气，当罐内气体压强达标时停止；启动球磨机，多次重复充气、球磨至中值粒径达标以及CO2全部被矿渣反应和吸附，最终使用满足要求的矿渣混合物制备混凝土。本发明通过在矿渣中掺硅铝化合物以及球磨机的机械作用促进矿渣反应吸附CO2，提高水化活性，一部分CO2在球磨时溶于水与矿渣反应产生碳酸盐；剩余CO2吸附在矿渣孔隙间，在水化过程中参与反应，可以提高矿渣混凝土早期强度，降低矿渣混凝土干缩坍落度损失，制备的矿渣混凝土具有和易性好、耐久性好和绿色环保的特点。
Method for preparing concrete based on slag, silicon-aluminum compound and CO2 waste gas
The invention relates to a method for preparing concrete based on slag, a silicon-aluminum compound and CO2 waste gas, and belongs to the field of green concrete. Comprising the following steps: adding a certain mass of slag, a silicon-aluminum compound and water into a ball milling tank; introducing CO2 waste gas into the tank, and stopping introducing the CO2 waste gas when the gas pressure in the tank reaches the standard; and starting the ball mill, repeatedly inflating for multiple times, carrying out ball milling until the median particle size reaches the standard and CO2 is completely reacted and adsorbed by the slag, and finally preparing the concrete by using the slag mixture meeting the requirements. According to the invention, the slag is promoted to react and adsorb CO2 through doping the silicon-aluminum compound in the slag and the mechanical action of the ball mill, the hydration activity is improved, and a part of CO2 is dissolved in water during ball milling and reacts with the slag to generate carbonate; the residual CO2 is adsorbed among slag pores and participates in the reaction in the hydration process, so that the early strength of the slag concrete can be improved, the dry shrinkage slump loss of the slag concrete is reduced, and the prepared slag concrete has the characteristics of good workability, good durability and environmental protection.
本发明涉及一种基于矿渣、硅铝化合物与CO2废气制备混凝土的方法，属于绿色混凝土领域。包括：将一定质量矿渣、硅铝化合物和水投入球磨罐；向罐中通入CO2废气，当罐内气体压强达标时停止；启动球磨机，多次重复充气、球磨至中值粒径达标以及CO2全部被矿渣反应和吸附，最终使用满足要求的矿渣混合物制备混凝土。本发明通过在矿渣中掺硅铝化合物以及球磨机的机械作用促进矿渣反应吸附CO2，提高水化活性，一部分CO2在球磨时溶于水与矿渣反应产生碳酸盐；剩余CO2吸附在矿渣孔隙间，在水化过程中参与反应，可以提高矿渣混凝土早期强度，降低矿渣混凝土干缩坍落度损失，制备的矿渣混凝土具有和易性好、耐久性好和绿色环保的特点。
Method for preparing concrete based on slag, silicon-aluminum compound and CO2 waste gas
一种基于矿渣、硅铝化合物与CO2废气制备混凝土的方法
GE ZHI (author) / SONG HAOMENG (author) / FANG HAIBO (author) / WEI CHENGXING (author) / ZHANG HONGZHI (author) / DU ZHIHAO (author) / WAN TIANTAO (author) / LI JINGXUAN (author) / JIANG SONGHAN (author)
2024-05-10
Patent
Electronic Resource
Chinese
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