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Artificial rock material suitable for negative temperature environment and preparation method thereof
The invention discloses an artificial rock material suitable for a negative temperature environment and a preparation method thereof. The preparation method comprises the following steps that a carbonized cementing material, aggregate, water and an anti-freezing mineralizer are uniformly mixed to obtain a wet mixture; compression molding or pouring molding is carried out on the wet mixture to prepare a green body; and the green body is carbonized and cured to obtain the artificial rock material suitable for the negative temperature environment. The characteristic that the dissolution rate of carbon dioxide is increased along with temperature reduction is fully utilized to promote the diffusion and dissolution process of the carbon dioxide at negative temperature, the anti-freezing mineralizer is introduced to reduce the water freezing point in the blank so as to ensure the water required by carbonization reaction, and meanwhile, the mineralization effect of the anti-freezing mineralizer is utilized to promote dissolution of calcium ions in a carbonized cementing material, so that the carbonization reaction rate under the negative temperature condition is increased; and the compressive strength of the artificial rock material can reach 50MPa after the artificial rock material is carbonized and maintained at -40 DEG C for 24 hours, and a new technical thought is provided for engineering application in negative temperature environments such as polar regions.
本发明公开一种适用于负温环境下的人工岩石材料及其制备方法。该制备方法，包括以下步骤：将碳化胶凝材料、骨料、水、防冻矿化剂混合均匀，得到湿混料；将湿混料经压制成型或浇筑成型制成坯体；将坯体进行碳化养护得到适用于负温环境下的人工岩石材料。本发明充分利用二氧化碳溶解速率随温度降低而升高这一特性促进其在负温下的扩散溶解过程，通过引入防冻矿化剂降低坯体内水分冰点以保证碳化反应所需水分，同时利用其矿化作用促进碳化胶凝材料中钙离子的溶出，从而增加负温条件下的碳化反应速率；本发明的人工岩石材料在‑40℃下碳化养护24小时后抗压强度可达50MPa，为极地等负温环境下的工程应用提供新的技术思路。
Artificial rock material suitable for negative temperature environment and preparation method thereof
The invention discloses an artificial rock material suitable for a negative temperature environment and a preparation method thereof. The preparation method comprises the following steps that a carbonized cementing material, aggregate, water and an anti-freezing mineralizer are uniformly mixed to obtain a wet mixture; compression molding or pouring molding is carried out on the wet mixture to prepare a green body; and the green body is carbonized and cured to obtain the artificial rock material suitable for the negative temperature environment. The characteristic that the dissolution rate of carbon dioxide is increased along with temperature reduction is fully utilized to promote the diffusion and dissolution process of the carbon dioxide at negative temperature, the anti-freezing mineralizer is introduced to reduce the water freezing point in the blank so as to ensure the water required by carbonization reaction, and meanwhile, the mineralization effect of the anti-freezing mineralizer is utilized to promote dissolution of calcium ions in a carbonized cementing material, so that the carbonization reaction rate under the negative temperature condition is increased; and the compressive strength of the artificial rock material can reach 50MPa after the artificial rock material is carbonized and maintained at -40 DEG C for 24 hours, and a new technical thought is provided for engineering application in negative temperature environments such as polar regions.
本发明公开一种适用于负温环境下的人工岩石材料及其制备方法。该制备方法，包括以下步骤：将碳化胶凝材料、骨料、水、防冻矿化剂混合均匀，得到湿混料；将湿混料经压制成型或浇筑成型制成坯体；将坯体进行碳化养护得到适用于负温环境下的人工岩石材料。本发明充分利用二氧化碳溶解速率随温度降低而升高这一特性促进其在负温下的扩散溶解过程，通过引入防冻矿化剂降低坯体内水分冰点以保证碳化反应所需水分，同时利用其矿化作用促进碳化胶凝材料中钙离子的溶出，从而增加负温条件下的碳化反应速率；本发明的人工岩石材料在‑40℃下碳化养护24小时后抗压强度可达50MPa，为极地等负温环境下的工程应用提供新的技术思路。
Artificial rock material suitable for negative temperature environment and preparation method thereof
一种适用于负温环境下的人工岩石材料及其制备方法
LIU ZHICHAO (author) / TAN YICHENG (author) / WANG FAZHOU (author) / HU SHUGUANG (author)
2021-11-16
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2021