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A platform for research: civil engineering, architecture and urbanism
Modified magnesium tailing aggregate as well as preparation method and application thereof
The invention belongs to the field of magnesium tailing resource utilization, and particularly relates to modified magnesium tailing aggregate as well as a preparation method and application thereof. The preparation method comprises the following steps: adding sodium silicate and carbonate mineralizing bacteria into magnesium tailing aggregate, and heating while stirring until the sodium silicate is melted and attached to the surface of the magnesium tailing aggregate; then adding carbon fiber powder, a carbon fiber adhesive A microcapsule and a carbon fiber adhesive B, uniformly mixing, cooling to room temperature, and air-drying to obtain a mixture; and adding a methyl acetate solution of cellulose acetate into the mixture, uniformly mixing, and air-drying to obtain the modified magnesium tailing aggregate. According to the preparation method of the modified magnesium tailing aggregate, the adverse effect of expansion generated when the magnesium tailings serve as the aggregate on the concrete is effectively controlled, the volume application of the magnesium tailings serving as the concrete aggregate is achieved, the performance of the concrete is improved, the volume stability of the concrete is improved, and resource utilization of the magnesium tailings is also achieved.
本发明属于镁尾矿资源化利用领域，具体涉及一种改性镁尾矿骨料及其制备方法与应用。所述制备方法包括：向镁尾矿骨料中加入硅酸钠、碳酸盐矿化菌，边搅拌边加热，直至硅酸钠融化并附着在镁尾矿骨料表面；然后再加入碳纤维粉、碳纤维粘接剂A微胶囊和碳纤维粘接剂B，混匀后冷却至室温，风干，得到混合料；向混合料中加入醋酸纤维素的醋酸甲酯溶液，混匀后风干，得到改性镁尾矿骨料。本发明提出的改性镁尾矿骨料的制备方法，有效控制了镁尾矿作为骨料时产生膨胀对混凝土的不利影响，实现了镁尾矿作为混凝土骨料的体量化应用，改善了混凝土性能，提高了混凝土体积稳定性，也实现了镁尾矿的资源化利用。
Modified magnesium tailing aggregate as well as preparation method and application thereof
The invention belongs to the field of magnesium tailing resource utilization, and particularly relates to modified magnesium tailing aggregate as well as a preparation method and application thereof. The preparation method comprises the following steps: adding sodium silicate and carbonate mineralizing bacteria into magnesium tailing aggregate, and heating while stirring until the sodium silicate is melted and attached to the surface of the magnesium tailing aggregate; then adding carbon fiber powder, a carbon fiber adhesive A microcapsule and a carbon fiber adhesive B, uniformly mixing, cooling to room temperature, and air-drying to obtain a mixture; and adding a methyl acetate solution of cellulose acetate into the mixture, uniformly mixing, and air-drying to obtain the modified magnesium tailing aggregate. According to the preparation method of the modified magnesium tailing aggregate, the adverse effect of expansion generated when the magnesium tailings serve as the aggregate on the concrete is effectively controlled, the volume application of the magnesium tailings serving as the concrete aggregate is achieved, the performance of the concrete is improved, the volume stability of the concrete is improved, and resource utilization of the magnesium tailings is also achieved.
本发明属于镁尾矿资源化利用领域，具体涉及一种改性镁尾矿骨料及其制备方法与应用。所述制备方法包括：向镁尾矿骨料中加入硅酸钠、碳酸盐矿化菌，边搅拌边加热，直至硅酸钠融化并附着在镁尾矿骨料表面；然后再加入碳纤维粉、碳纤维粘接剂A微胶囊和碳纤维粘接剂B，混匀后冷却至室温，风干，得到混合料；向混合料中加入醋酸纤维素的醋酸甲酯溶液，混匀后风干，得到改性镁尾矿骨料。本发明提出的改性镁尾矿骨料的制备方法，有效控制了镁尾矿作为骨料时产生膨胀对混凝土的不利影响，实现了镁尾矿作为混凝土骨料的体量化应用，改善了混凝土性能，提高了混凝土体积稳定性，也实现了镁尾矿的资源化利用。
Modified magnesium tailing aggregate as well as preparation method and application thereof
一种改性镁尾矿骨料及其制备方法与应用
ZHANG CHUANYIN (author) / DUAN XINGZE (author) / LI JIANWEI (author) / LI WEI (author) / WANG XUEZHEN (author) / ZHANG HONGZE (author) / LIU JU (author) / CHEN LIUGANG (author) / MA YAN (author) / WANG SHUAIQI (author)
2024-07-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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