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A platform for research: civil engineering, architecture and urbanism
Preparation method of gypsum-based lightweight hollow aggregate
The invention discloses a preparation method of gypsum-based lightweight hollow aggregate, and belongs to the technical field of building materials. The preparation method specifically comprises the following steps: firing ardealite into a gypsum-based cementing material in which the content of beta-type hemihydrate gypsum is greater than 90%, adding a retarder, a thickener, a water reducer and chopped fibers, uniformly mixing to form a gypsum mixture A, adding a mixed reactant into molten paraffin, and granulating before the paraffin is not completely dried and hardened to obtain a mixture ball C; the surface of the mixed material ball C is coated with a gypsum mixed material A with the thickness not smaller than 3 mm, and a new material ball D is formed; placing the pellets D into a microwave oven for irradiation, and cooling at room temperature after material expansion is completed, so as to obtain the gypsum-based lightweight hollow aggregate. The gypsum-based lightweight hollow aggregate disclosed by the invention can be used for preparing lightweight cement concrete and gypsum-based concrete, can effectively reduce the apparent density of a cementing material, and has the advantages of good fireproof performance, small apparent density, fire prevention, heat preservation, sound insulation, heat insulation, high specific strength, greenness and low carbon.
本发明公开一种石膏基轻质空心骨料的制备方法，属于建筑材料技术领域。具体为将磷石膏烧制成β‑型半水石膏含量＞90%的石膏基胶凝材料，加入缓凝剂、增稠剂、减水剂、短切纤维混合均匀，形成石膏混合料A，在熔化状态下的石蜡内，投入混合反应剂，在石蜡未完全干燥硬化前进行造粒得到混合料球C；在混合料球C表面裹覆厚度不低于3mm的石膏混合料A，形成新的料球D；将料球D置入微波炉内进行辐照，待物料膨胀完成后，室温冷却，所得即为石膏基轻质空心骨料。本发明所述石膏基轻质空心骨料可用于轻质水泥混凝土、石膏基混凝土的制备，可有效降低胶凝材料的表观密度，具有防火性能好、表观密度小、防火保温、隔音隔热、比强度高、绿色低碳的优势。
Preparation method of gypsum-based lightweight hollow aggregate
The invention discloses a preparation method of gypsum-based lightweight hollow aggregate, and belongs to the technical field of building materials. The preparation method specifically comprises the following steps: firing ardealite into a gypsum-based cementing material in which the content of beta-type hemihydrate gypsum is greater than 90%, adding a retarder, a thickener, a water reducer and chopped fibers, uniformly mixing to form a gypsum mixture A, adding a mixed reactant into molten paraffin, and granulating before the paraffin is not completely dried and hardened to obtain a mixture ball C; the surface of the mixed material ball C is coated with a gypsum mixed material A with the thickness not smaller than 3 mm, and a new material ball D is formed; placing the pellets D into a microwave oven for irradiation, and cooling at room temperature after material expansion is completed, so as to obtain the gypsum-based lightweight hollow aggregate. The gypsum-based lightweight hollow aggregate disclosed by the invention can be used for preparing lightweight cement concrete and gypsum-based concrete, can effectively reduce the apparent density of a cementing material, and has the advantages of good fireproof performance, small apparent density, fire prevention, heat preservation, sound insulation, heat insulation, high specific strength, greenness and low carbon.
本发明公开一种石膏基轻质空心骨料的制备方法，属于建筑材料技术领域。具体为将磷石膏烧制成β‑型半水石膏含量＞90%的石膏基胶凝材料，加入缓凝剂、增稠剂、减水剂、短切纤维混合均匀，形成石膏混合料A，在熔化状态下的石蜡内，投入混合反应剂，在石蜡未完全干燥硬化前进行造粒得到混合料球C；在混合料球C表面裹覆厚度不低于3mm的石膏混合料A，形成新的料球D；将料球D置入微波炉内进行辐照，待物料膨胀完成后，室温冷却，所得即为石膏基轻质空心骨料。本发明所述石膏基轻质空心骨料可用于轻质水泥混凝土、石膏基混凝土的制备，可有效降低胶凝材料的表观密度，具有防火性能好、表观密度小、防火保温、隔音隔热、比强度高、绿色低碳的优势。
Preparation method of gypsum-based lightweight hollow aggregate
一种石膏基轻质空心骨料的制备方法
QUAN SICHEN (author) / ZHAO ZHIMAN (author) / QIU CHEN (author) / ZHANG YI (author)
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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