Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calcination-free phosphogypsum foam lightweight aggregate as well as preparation method and application thereof
The invention provides a calcination-free phosphogypsum foam lightweight aggregate and a preparation method thereof, and belongs to lightweight aggregates. According to the calcination-free phosphogypsum foam lightweight aggregate provided by the invention, modified phosphogypsum, mineral powder, cement clinker, bauxite, silica fume, kaolin and a foaming agent are used as preparation raw materials of a foam core, and phosphogypsum, quick-hardening high-iron sulphoaluminate cement, building rubber powder and water are used as preparation raw materials of a quick-hardening cementing material shell layer; the stacking density of the formed calcination-free phosphogypsum foam lightweight aggregate with the core-shell structure is smaller than 800 kg/m < 3 >, the stacking density is small, the strength of the calcination-free phosphogypsum foam lightweight aggregate is improved through the quick-hardening cementing material shell layer, and the calcination-free phosphogypsum foam lightweight aggregate has good application prospects in the field of ultra-light concrete; the foam core and the quick-hardening cementing material shell layer are self-assembled into a core-shell structure, so that pollutants are quickly encapsulated in the core by the shell layer material with better compactness, the leaching toxicity of the calcination-free phosphogypsum foam lightweight aggregate is reduced, and the environment-friendly performance is excellent.
本发明提供了一种免煅烧磷石膏泡沫轻骨料及其制备方法，属于轻质骨料。本发明提供的免煅烧磷石膏泡沫轻骨料以改性磷石膏、矿粉、水泥熟料、铝矾土、硅灰、高岭土和发泡剂作为泡沫内核的制备原料，以磷石膏、快硬高铁硫铝酸盐水泥和建筑胶粉和水作为快硬性胶凝材料壳层的制备原料，形成的具有核‑壳结构的免煅烧磷石膏泡沫轻骨料的堆积密度＜800kg/m3，堆积密度小，且快硬性胶凝材料壳层提高了免煅烧磷石膏泡沫轻骨料的强度，在超轻混凝土领域中具有很好的应用前景；泡沫内核与快硬性胶凝材料壳层自组装为核壳结构，使污染物被密实性较好的壳层材料快速封装在内核中，降低了免煅烧磷石膏泡沫轻骨料的浸出毒性，环保性能优异。
Calcination-free phosphogypsum foam lightweight aggregate as well as preparation method and application thereof
The invention provides a calcination-free phosphogypsum foam lightweight aggregate and a preparation method thereof, and belongs to lightweight aggregates. According to the calcination-free phosphogypsum foam lightweight aggregate provided by the invention, modified phosphogypsum, mineral powder, cement clinker, bauxite, silica fume, kaolin and a foaming agent are used as preparation raw materials of a foam core, and phosphogypsum, quick-hardening high-iron sulphoaluminate cement, building rubber powder and water are used as preparation raw materials of a quick-hardening cementing material shell layer; the stacking density of the formed calcination-free phosphogypsum foam lightweight aggregate with the core-shell structure is smaller than 800 kg/m < 3 >, the stacking density is small, the strength of the calcination-free phosphogypsum foam lightweight aggregate is improved through the quick-hardening cementing material shell layer, and the calcination-free phosphogypsum foam lightweight aggregate has good application prospects in the field of ultra-light concrete; the foam core and the quick-hardening cementing material shell layer are self-assembled into a core-shell structure, so that pollutants are quickly encapsulated in the core by the shell layer material with better compactness, the leaching toxicity of the calcination-free phosphogypsum foam lightweight aggregate is reduced, and the environment-friendly performance is excellent.
本发明提供了一种免煅烧磷石膏泡沫轻骨料及其制备方法，属于轻质骨料。本发明提供的免煅烧磷石膏泡沫轻骨料以改性磷石膏、矿粉、水泥熟料、铝矾土、硅灰、高岭土和发泡剂作为泡沫内核的制备原料，以磷石膏、快硬高铁硫铝酸盐水泥和建筑胶粉和水作为快硬性胶凝材料壳层的制备原料，形成的具有核‑壳结构的免煅烧磷石膏泡沫轻骨料的堆积密度＜800kg/m3，堆积密度小，且快硬性胶凝材料壳层提高了免煅烧磷石膏泡沫轻骨料的强度，在超轻混凝土领域中具有很好的应用前景；泡沫内核与快硬性胶凝材料壳层自组装为核壳结构，使污染物被密实性较好的壳层材料快速封装在内核中，降低了免煅烧磷石膏泡沫轻骨料的浸出毒性，环保性能优异。
Calcination-free phosphogypsum foam lightweight aggregate as well as preparation method and application thereof
一种免煅烧磷石膏泡沫轻骨料及其制备方法和应用
HU BIAO (Autor:in) / WU CHIQIU (Autor:in) / LYU WEI (Autor:in) / WANG YUZHEN (Autor:in) / TANG TAO (Autor:in)
26.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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