Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Secondary lining concrete carbonization curing method and construction method
The invention discloses a secondary lining concrete carbonization curing method, which comprises the steps of step 1, sealing a space; step 2, filling the closed space with high-concentration CO2 gas;and step 3, inflating for 3-28 days, and enabling the environment relative humidity to be not lower than 55%. The high-concentration CO2 gas is introduced, so that Ca(OH)2 or calcium silicate in theconcrete partially reacts with the high-concentration CO2 to generate CaCO3, internal cracks and capillary pores are made up, formation of CaCO3 crystals generated by carbonization in the capillary pores is fully utilized, capillary pore channels are closed, the impermeability of the concrete is improved, and thus the impermeability of the secondary lining concrete is improved. The carbonization activation curing method is different from carbonization of traditional concrete in atmospheric CO2, can improve strength and impermeability and repair cracks, and is especially suitable for impermeable concrete in closed spaces such as tunnels, culverts and the like.
一种二衬混凝土碳化养护方法，包括以下步骤：步骤一、对空间进行密封，步骤二、向密闭空间内充入高浓度CO2气体；步骤三、充气时间3‑28天、环境相对湿度不低于55%。充入高浓度的CO2气体，使得混凝土内部Ca(OH)2或硅酸钙部分和高浓度CO2反应，生产CaCO3，弥补内部的裂缝和毛细孔隙，充分利用碳化产生的CaCO3晶体在毛细空中的形成，封闭毛细孔通道，提升混凝土的抗渗性，从而增加二衬混凝土抗渗性能。这种碳化激活养生方法和传统混凝土在大气CO2中的碳化不同，可以提高强度和抗渗性，修复裂缝和裂隙，尤其适用于隧道、涵洞等密闭空间的抗渗混凝土。
Secondary lining concrete carbonization curing method and construction method
The invention discloses a secondary lining concrete carbonization curing method, which comprises the steps of step 1, sealing a space; step 2, filling the closed space with high-concentration CO2 gas;and step 3, inflating for 3-28 days, and enabling the environment relative humidity to be not lower than 55%. The high-concentration CO2 gas is introduced, so that Ca(OH)2 or calcium silicate in theconcrete partially reacts with the high-concentration CO2 to generate CaCO3, internal cracks and capillary pores are made up, formation of CaCO3 crystals generated by carbonization in the capillary pores is fully utilized, capillary pore channels are closed, the impermeability of the concrete is improved, and thus the impermeability of the secondary lining concrete is improved. The carbonization activation curing method is different from carbonization of traditional concrete in atmospheric CO2, can improve strength and impermeability and repair cracks, and is especially suitable for impermeable concrete in closed spaces such as tunnels, culverts and the like.
一种二衬混凝土碳化养护方法，包括以下步骤：步骤一、对空间进行密封，步骤二、向密闭空间内充入高浓度CO2气体；步骤三、充气时间3‑28天、环境相对湿度不低于55%。充入高浓度的CO2气体，使得混凝土内部Ca(OH)2或硅酸钙部分和高浓度CO2反应，生产CaCO3，弥补内部的裂缝和毛细孔隙，充分利用碳化产生的CaCO3晶体在毛细空中的形成，封闭毛细孔通道，提升混凝土的抗渗性，从而增加二衬混凝土抗渗性能。这种碳化激活养生方法和传统混凝土在大气CO2中的碳化不同，可以提高强度和抗渗性，修复裂缝和裂隙，尤其适用于隧道、涵洞等密闭空间的抗渗混凝土。
Secondary lining concrete carbonization curing method and construction method
一种二衬混凝土碳化养护方法及其施工方法
XIE JIANLIANG (Autor:in) / SHEN WEIGUO (Autor:in) / CHEN PEICHONG (Autor:in) / DU XUEJIAN (Autor:in) / TANG XIANGCHUN (Autor:in) / ZHANG DI (Autor:in) / LIU BIN (Autor:in) / XU GELONG (Autor:in) / ZHANG BINGLIU (Autor:in) / ZHOU ZIXIONG (Autor:in)
11.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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