Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Desulfurized gypsum-mineral powder based high-strength lightweight aggregate concrete material and preparation method thereof
The invention provides a desulfurized gypsum-mineral powder based high-strength lightweight aggregate concrete material and a preparation method thereof. The preparation method comprises the following steps: weighing desulfurized gypsum, slag powder, cement, silica fume, fly ash floating beads, a water reducing agent and a certain amount of water according to preset parts by weight, and forcibly stirring to obtain lightweight concrete slurry; sequentially adding ceramsite and pottery sand into the concrete slurry, and uniformly stirring to obtain a lightweight aggregate concrete mixture; and molding and curing the concrete mixture to obtain the high-strength lightweight aggregate concrete material. The use amount of the cement is controlled within 10%, and the carbon reduction effect is obvious. According to the material, the desulfurized gypsum is adopted to excite the activity of the slag powder, the silica fume is doped to increase the compactness of slurry, the fly ash floating beads are doped to reduce the volume weight of the slurry, the pottery sand and the ceramsite are adopted as lightweight aggregates, and the polycarboxylic acid water reducer is adopted to control the water-cement ratio of concrete and endow a mixture with good fluidity. The dry density of the low-carbon high-strength lightweight aggregate concrete material does not exceed 1500kg/m < 3 >, the 28-day compressive strength is 65MPa, and the strength development is synchronous with that of a cement-based material.
本发明提供了一种脱硫石膏‑矿粉基高强轻骨料混凝土材料及其制备方法。本发明通过按照预设的重量份数称取脱硫石膏、矿渣粉、水泥、硅灰、粉煤灰漂珠、减水剂、一定量的水，通过强制搅拌得到轻质混凝土浆体；向混凝土浆体中依次加入陶粒、陶砂，搅拌均匀后得到轻骨料混凝土拌合物；将混凝土拌合物成型、养护后，得到高强轻骨料混凝土材料。本发明中水泥用量控制在10%以内，降碳效果明显。本材料采用脱硫石膏来激发矿渣粉活性，掺加硅灰来增加浆体密实性，掺加粉煤灰漂珠降低浆体容重，采用陶砂、陶粒做轻质骨料，采用聚羧酸减水剂控制混凝土水灰比的同时赋予拌合物良好流动性。最终得到干密度不超过1500kg/m3，28天抗压强度65MPa，强度发展与水泥基材料同步的低碳高强轻骨料混凝土材料。
Desulfurized gypsum-mineral powder based high-strength lightweight aggregate concrete material and preparation method thereof
The invention provides a desulfurized gypsum-mineral powder based high-strength lightweight aggregate concrete material and a preparation method thereof. The preparation method comprises the following steps: weighing desulfurized gypsum, slag powder, cement, silica fume, fly ash floating beads, a water reducing agent and a certain amount of water according to preset parts by weight, and forcibly stirring to obtain lightweight concrete slurry; sequentially adding ceramsite and pottery sand into the concrete slurry, and uniformly stirring to obtain a lightweight aggregate concrete mixture; and molding and curing the concrete mixture to obtain the high-strength lightweight aggregate concrete material. The use amount of the cement is controlled within 10%, and the carbon reduction effect is obvious. According to the material, the desulfurized gypsum is adopted to excite the activity of the slag powder, the silica fume is doped to increase the compactness of slurry, the fly ash floating beads are doped to reduce the volume weight of the slurry, the pottery sand and the ceramsite are adopted as lightweight aggregates, and the polycarboxylic acid water reducer is adopted to control the water-cement ratio of concrete and endow a mixture with good fluidity. The dry density of the low-carbon high-strength lightweight aggregate concrete material does not exceed 1500kg/m < 3 >, the 28-day compressive strength is 65MPa, and the strength development is synchronous with that of a cement-based material.
本发明提供了一种脱硫石膏‑矿粉基高强轻骨料混凝土材料及其制备方法。本发明通过按照预设的重量份数称取脱硫石膏、矿渣粉、水泥、硅灰、粉煤灰漂珠、减水剂、一定量的水，通过强制搅拌得到轻质混凝土浆体；向混凝土浆体中依次加入陶粒、陶砂，搅拌均匀后得到轻骨料混凝土拌合物；将混凝土拌合物成型、养护后，得到高强轻骨料混凝土材料。本发明中水泥用量控制在10%以内，降碳效果明显。本材料采用脱硫石膏来激发矿渣粉活性，掺加硅灰来增加浆体密实性，掺加粉煤灰漂珠降低浆体容重，采用陶砂、陶粒做轻质骨料，采用聚羧酸减水剂控制混凝土水灰比的同时赋予拌合物良好流动性。最终得到干密度不超过1500kg/m3，28天抗压强度65MPa，强度发展与水泥基材料同步的低碳高强轻骨料混凝土材料。
Desulfurized gypsum-mineral powder based high-strength lightweight aggregate concrete material and preparation method thereof
一种脱硫石膏-矿粉基高强轻骨料混凝土材料及其制备方法
HU LIANG (Autor:in) / LING GANG (Autor:in) / LIN XI (Autor:in) / XU ZHIYONG (Autor:in) / WANG MINGYAN (Autor:in) / QIAN DIAO (Autor:in)
20.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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