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A platform for research: civil engineering, architecture and urbanism
Preparation method of high-quality recycled concrete coarse aggregate based on carbon sequestration-carbon absorption
The invention discloses a preparation method of high-quality recycled concrete coarse aggregate based on carbon sequestration-carbon absorption. The preparation method comprises the following steps: (1) crushing waste concrete and screening to obtain recycled aggregate with the particle size of 5mm-40mm; (2) carrying out water soaking pretreatment on the recycled aggregate until the water saturation is 25-75%; (3) the pretreated coarse aggregate is put into a closed carbonization reaction kettle, the CO2 concentration is 100%, the temperature is 20-40 DEG C, the time is 5-24 h, the pressure is 1-3 bar, the pressure needs to be kept +/-0.1 bar in the carbon sequestration process, and the pressure is kept in the carbon sequestration process; and (4) testing the basic performance of the recycled aggregate, and orthogonally optimizing carbon sequestration parameters. The method is more effective in carbon sequestration reinforcement of the recycled aggregate, and the surface pore structure of the recycled aggregate is remarkably improved.
一种基于固碳‑吸碳的高品质再生混凝土粗骨料制备方法，包括以下步骤：(1)破碎废弃混凝土筛分后至粒径5mm‑40mm再生骨料；(2)再生骨料泡水预处理至水饱和度25％‑75％；(3)预处理粗骨料放入密闭碳化反应釜，CO2浓度为100％，温度20℃‑40℃，时间5h‑24h，压力为1bar‑3bar，固碳过程中需保压±0.1bar，固碳过程中保压；(4)测试再生骨料基本性能，正交优选固碳参数。本发明更有效再生骨料固碳强化方式，显著改善再生骨料表面孔隙结构。
Preparation method of high-quality recycled concrete coarse aggregate based on carbon sequestration-carbon absorption
The invention discloses a preparation method of high-quality recycled concrete coarse aggregate based on carbon sequestration-carbon absorption. The preparation method comprises the following steps: (1) crushing waste concrete and screening to obtain recycled aggregate with the particle size of 5mm-40mm; (2) carrying out water soaking pretreatment on the recycled aggregate until the water saturation is 25-75%; (3) the pretreated coarse aggregate is put into a closed carbonization reaction kettle, the CO2 concentration is 100%, the temperature is 20-40 DEG C, the time is 5-24 h, the pressure is 1-3 bar, the pressure needs to be kept +/-0.1 bar in the carbon sequestration process, and the pressure is kept in the carbon sequestration process; and (4) testing the basic performance of the recycled aggregate, and orthogonally optimizing carbon sequestration parameters. The method is more effective in carbon sequestration reinforcement of the recycled aggregate, and the surface pore structure of the recycled aggregate is remarkably improved.
一种基于固碳‑吸碳的高品质再生混凝土粗骨料制备方法，包括以下步骤：(1)破碎废弃混凝土筛分后至粒径5mm‑40mm再生骨料；(2)再生骨料泡水预处理至水饱和度25％‑75％；(3)预处理粗骨料放入密闭碳化反应釜，CO2浓度为100％，温度20℃‑40℃，时间5h‑24h，压力为1bar‑3bar，固碳过程中需保压±0.1bar，固碳过程中保压；(4)测试再生骨料基本性能，正交优选固碳参数。本发明更有效再生骨料固碳强化方式，显著改善再生骨料表面孔隙结构。
Preparation method of high-quality recycled concrete coarse aggregate based on carbon sequestration-carbon absorption
一种基于固碳-吸碳的高品质再生混凝土粗骨料制备方法
QIAN RUSHENG (author) / ZHAO RUZE (author) / YE ZHIBO (author) / CAI HUIXUAN (author) / YANG YANG (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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