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Method for mineralizing and sealing CO2 in solid waste concrete
The invention discloses a method for mineralizing and sealing CO2 from solid waste concrete, which comprises the following steps: preparing solid waste concrete: taking 50-79% of waste incineration slag as a main raw material, doping 1-30% of steel slag, adding a cementing material cement, uniformly mixing, adding water, stirring to form flowable slurry, and finally pouring and molding by using a mold to obtain the solid waste concrete; and mineralizing the solid waste concrete, namely putting the naturally cured solid waste concrete into a hot-stewed autoclave, curing in a 50% CO2/N2 atmosphere, taking out after curing, and cooling to obtain a solid waste concrete sample. According to the method, the solid waste is reasonably proportioned, traditional pure CO2 curing is replaced with low-concentration CO2 mineralization curing, incineration flue gas can be simulated to a certain degree to conduct mineralization curing on the solid waste concrete, CO2 is effectively sealed in the concrete, and the compressive strength and the carbon sequestration rate of a concrete product are improved.
本发明公开一种固废混凝土矿化封存CO2的方法，包括：制备固废混凝土：以50‑79％垃圾焚烧炉渣为主原料，掺比1‑30％钢渣，再加入胶凝材料水泥，混合均匀后加水，搅拌成可流动的料浆，最后利用模具浇筑成型，静置后脱模自然养护：固废混凝土矿化：将自然养护后的固废混凝土置于热焖高压釜中，于50％CO2/N2气氛中进行养护，养护结束后取出冷却，制得固废混凝土样品。本发明通过对固废合理配比，并利用低浓度CO2矿化养护取代传统纯CO2养护，可一定程度模拟焚烧烟气对固废混凝土进行矿化养护，将CO2有效封存于混凝土中，提高混凝土产品的抗压强度和固碳率。
Method for mineralizing and sealing CO2 in solid waste concrete
The invention discloses a method for mineralizing and sealing CO2 from solid waste concrete, which comprises the following steps: preparing solid waste concrete: taking 50-79% of waste incineration slag as a main raw material, doping 1-30% of steel slag, adding a cementing material cement, uniformly mixing, adding water, stirring to form flowable slurry, and finally pouring and molding by using a mold to obtain the solid waste concrete; and mineralizing the solid waste concrete, namely putting the naturally cured solid waste concrete into a hot-stewed autoclave, curing in a 50% CO2/N2 atmosphere, taking out after curing, and cooling to obtain a solid waste concrete sample. According to the method, the solid waste is reasonably proportioned, traditional pure CO2 curing is replaced with low-concentration CO2 mineralization curing, incineration flue gas can be simulated to a certain degree to conduct mineralization curing on the solid waste concrete, CO2 is effectively sealed in the concrete, and the compressive strength and the carbon sequestration rate of a concrete product are improved.
本发明公开一种固废混凝土矿化封存CO2的方法，包括：制备固废混凝土：以50‑79％垃圾焚烧炉渣为主原料，掺比1‑30％钢渣，再加入胶凝材料水泥，混合均匀后加水，搅拌成可流动的料浆，最后利用模具浇筑成型，静置后脱模自然养护：固废混凝土矿化：将自然养护后的固废混凝土置于热焖高压釜中，于50％CO2/N2气氛中进行养护，养护结束后取出冷却，制得固废混凝土样品。本发明通过对固废合理配比，并利用低浓度CO2矿化养护取代传统纯CO2养护，可一定程度模拟焚烧烟气对固废混凝土进行矿化养护，将CO2有效封存于混凝土中，提高混凝土产品的抗压强度和固碳率。
Method for mineralizing and sealing CO2 in solid waste concrete
一种固废混凝土矿化封存CO2的方法
CHEN LIANGGUANG (author) / LU MIN (author) / XIONG ZUHONG (author) / HUANG YUNJUN (author) / HUANG HAIBIN (author) / LIU LILIN (author) / LONG YANQIU (author)
2023-12-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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