Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing multi-scale fiber-toughened jet UHPC (Ultra High Performance Concrete) by utilizing carbon mineralization reaction
The invention discloses a method for preparing multi-scale fiber-toughened jet UHPC (Ultra High Performance Concrete) by utilizing a carbon mineralization reaction. The method comprises the following steps: S1, weighing cement, fly ash floating beads, silica fume, superfine limestone powder, microfilament steel fibers, mixing water, nano aragonite and porous aggregate; s2, soaking the porous aggregate in a magnesium chloride solution, fishing out and draining to obtain pre-wetted porous aggregate, and mixing the pre-wetted porous aggregate with other raw materials to prepare spraying ultra-high performance concrete; s3, industrial waste gas with the temperature of 60-80 DEG C and the carbon dioxide concentration of 50-70 vt% is adopted, the sprayed UHPC obtained in the step S2 is pumped, and a sprayed UHPC test piece is obtained and cured. According to the invention, high-temperature carbon dioxide is used for spraying UHPC, porous aggregate is used for pre-adsorbing magnesium chloride, and nano crystal nucleus is used for inducing, so that a multi-scale toughening effect is achieved, and meanwhile, a large amount of carbon dioxide industrial waste gas is consumed.
本发明公开了一种利用碳矿化反应制备多尺度纤维增韧喷射UHPC的方法，包括以下步骤：步骤S1：称取水泥、粉煤灰漂珠、硅灰、超细石灰石粉、微丝钢纤维、拌合水、纳米文石、多孔骨料；步骤S2：将多孔骨料浸泡于氯化镁溶液中，捞出沥干后得到预湿多孔骨料，再与其他原料混合制备喷射超高性能混凝土；步骤S3：采用温度为60℃～80℃、含二氧化碳浓度为50～70vt％的工业废气，泵送步骤S2所得的喷射超高性能混凝土，得到喷射UHPC试件并进行养护。本发明通过采用高温二氧化碳喷射UHPC、多孔骨料预吸附氯化镁、纳米晶核诱导，达到多尺度增韧的效果，同时消耗了大量的二氧化碳工业废气。
Method for preparing multi-scale fiber-toughened jet UHPC (Ultra High Performance Concrete) by utilizing carbon mineralization reaction
The invention discloses a method for preparing multi-scale fiber-toughened jet UHPC (Ultra High Performance Concrete) by utilizing a carbon mineralization reaction. The method comprises the following steps: S1, weighing cement, fly ash floating beads, silica fume, superfine limestone powder, microfilament steel fibers, mixing water, nano aragonite and porous aggregate; s2, soaking the porous aggregate in a magnesium chloride solution, fishing out and draining to obtain pre-wetted porous aggregate, and mixing the pre-wetted porous aggregate with other raw materials to prepare spraying ultra-high performance concrete; s3, industrial waste gas with the temperature of 60-80 DEG C and the carbon dioxide concentration of 50-70 vt% is adopted, the sprayed UHPC obtained in the step S2 is pumped, and a sprayed UHPC test piece is obtained and cured. According to the invention, high-temperature carbon dioxide is used for spraying UHPC, porous aggregate is used for pre-adsorbing magnesium chloride, and nano crystal nucleus is used for inducing, so that a multi-scale toughening effect is achieved, and meanwhile, a large amount of carbon dioxide industrial waste gas is consumed.
本发明公开了一种利用碳矿化反应制备多尺度纤维增韧喷射UHPC的方法，包括以下步骤：步骤S1：称取水泥、粉煤灰漂珠、硅灰、超细石灰石粉、微丝钢纤维、拌合水、纳米文石、多孔骨料；步骤S2：将多孔骨料浸泡于氯化镁溶液中，捞出沥干后得到预湿多孔骨料，再与其他原料混合制备喷射超高性能混凝土；步骤S3：采用温度为60℃～80℃、含二氧化碳浓度为50～70vt％的工业废气，泵送步骤S2所得的喷射超高性能混凝土，得到喷射UHPC试件并进行养护。本发明通过采用高温二氧化碳喷射UHPC、多孔骨料预吸附氯化镁、纳米晶核诱导，达到多尺度增韧的效果，同时消耗了大量的二氧化碳工业废气。
Method for preparing multi-scale fiber-toughened jet UHPC (Ultra High Performance Concrete) by utilizing carbon mineralization reaction
利用碳矿化反应制备多尺度纤维增韧喷射UHPC的方法
MING XIN (Autor:in) / CHEN FEIXIANG (Autor:in) / ZHANG GUOZHI (Autor:in) / LIU YONG (Autor:in) / FANG HUI (Autor:in) / LENG YONG (Autor:in) / LIU KEXIN (Autor:in) / JIN LANG (Autor:in) / WEI KAI (Autor:in) / XIAO JI (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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