Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Green cementing material capable of realizing carbon reduction and carbon sequestration effects and preparation method of green cementing material
The invention provides a preparation method of a green cementing material capable of realizing carbon reduction and carbon sequestration, which comprises the following steps: firstly, under the condition of continuously introducing CO2, reacting sodium hydroxide with water to obtain sodium bicarbonate; secondly, magnesium oxide and sodium bicarbonate are mixed according to the molar mass ratio of (2-4): 1, and a dry mixture is obtained; and finally, adding water into the dry mixture according to a water-ash mass ratio of 0.5-0.55, uniformly mixing to obtain a mixture, pouring and oscillating the mixture, and curing to a specified age. On one hand, compared with cement, the green cementing material prepared by the invention has the advantages that carbon dioxide can be reduced in the preparation and curing processes, and the compressive strength of the green cementing material is higher than that of the cement under the same condition; on the other hand, sodium bicarbonate is obtained by adding water into sodium hydroxide to absorb carbon dioxide in industrial waste gas, and is applied to practical engineering as a carrier of carbon dioxide, so that the effect of recycling carbon dioxide is achieved, carbon reduction and carbon sequestration are realized, and the method has popularization and application values.
本发明提供一种可实现减碳固碳作用的绿色胶凝材料的制备方法，包括以下步骤：首先，在持续通入CO2的条件下，将氢氧化钠与水反应，得到碳酸氢钠；其次，将氧化镁与碳酸氢钠按照摩尔质量比为(2～4)：1混合，得到干混料；最后，按照水灰质量比为0.5～0.55，向所述干混料中加水，混匀得到混合料，将所述混合料浇筑、振荡，并养护至规定龄期。本发明制得的绿色胶凝材料，一方面较水泥而言，其制备和固化过程均可以减少二氧化碳的产生，且其抗压强度高于同等条件下的水泥；另一方面碳酸氢钠是氢氧化钠加水吸收工业废气中的二氧化碳反应得到的，作为二氧化碳的载体应用于实际工程中，达到了二氧化碳循环利用的效果，实现了“减碳固碳”，具有推广及应用价值。
Green cementing material capable of realizing carbon reduction and carbon sequestration effects and preparation method of green cementing material
The invention provides a preparation method of a green cementing material capable of realizing carbon reduction and carbon sequestration, which comprises the following steps: firstly, under the condition of continuously introducing CO2, reacting sodium hydroxide with water to obtain sodium bicarbonate; secondly, magnesium oxide and sodium bicarbonate are mixed according to the molar mass ratio of (2-4): 1, and a dry mixture is obtained; and finally, adding water into the dry mixture according to a water-ash mass ratio of 0.5-0.55, uniformly mixing to obtain a mixture, pouring and oscillating the mixture, and curing to a specified age. On one hand, compared with cement, the green cementing material prepared by the invention has the advantages that carbon dioxide can be reduced in the preparation and curing processes, and the compressive strength of the green cementing material is higher than that of the cement under the same condition; on the other hand, sodium bicarbonate is obtained by adding water into sodium hydroxide to absorb carbon dioxide in industrial waste gas, and is applied to practical engineering as a carrier of carbon dioxide, so that the effect of recycling carbon dioxide is achieved, carbon reduction and carbon sequestration are realized, and the method has popularization and application values.
本发明提供一种可实现减碳固碳作用的绿色胶凝材料的制备方法，包括以下步骤：首先，在持续通入CO2的条件下，将氢氧化钠与水反应，得到碳酸氢钠；其次，将氧化镁与碳酸氢钠按照摩尔质量比为(2～4)：1混合，得到干混料；最后，按照水灰质量比为0.5～0.55，向所述干混料中加水，混匀得到混合料，将所述混合料浇筑、振荡，并养护至规定龄期。本发明制得的绿色胶凝材料，一方面较水泥而言，其制备和固化过程均可以减少二氧化碳的产生，且其抗压强度高于同等条件下的水泥；另一方面碳酸氢钠是氢氧化钠加水吸收工业废气中的二氧化碳反应得到的，作为二氧化碳的载体应用于实际工程中，达到了二氧化碳循环利用的效果，实现了“减碳固碳”，具有推广及应用价值。
Green cementing material capable of realizing carbon reduction and carbon sequestration effects and preparation method of green cementing material
一种可实现减碳固碳作用的绿色胶凝材料及其制备方法
LI WENTAO (Autor:in) / HUANG KE (Autor:in) / XIAO HENGLIN (Autor:in) / MA QIANG (Autor:in) / CHEN ZHI (Autor:in) / LI LIHUA (Autor:in) / YANG KANG (Autor:in) / SUN ZHANGHAO (Autor:in) / WANG JINGHAO (Autor:in) / ZHOU LI (Autor:in)
12.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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