A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lightweight aggregate as well as preparation method and application thereof
The invention provides lightweight aggregate as well as a preparation method and application thereof. The lightweight aggregate is prepared from powder through a balling process, the powder contains alpha-type semi-hydrated gypsum, the microstructure of the alpha-type semi-hydrated gypsum is fibrous, and the alpha-type semi-hydrated gypsum with the length-diameter ratio of 20-300 accounts for 95% or above of the total alpha-type semi-hydrated gypsum. The lightweight aggregate provided by the invention is low in density, high in porosity, high in softening coefficient, high in strength, excellent in water resistance and good in chemical compatibility with geopolymer concrete, and a new shortcut is provided for resource utilization of waste gypsum in the building field and saving of natural gravel resources.
本发明提供一种轻质骨料及其制备方法与应用。所述轻质骨料由粉料在成球工艺下制备而成，所述粉料包含α型半水石膏，所述α型半水石膏的微观形貌呈纤维状，长径比为20～300的α型半水石膏占全部α型半水石膏的95％以上。本发明提供的轻质骨料密度低、孔隙率高、软化系数高、强度高、抗水性优良，且与地聚物混凝土化学兼容性良好，为废弃石膏在建筑领域的资源化利用以及节约天然砂石资源提供了一条新捷径。
Lightweight aggregate as well as preparation method and application thereof
The invention provides lightweight aggregate as well as a preparation method and application thereof. The lightweight aggregate is prepared from powder through a balling process, the powder contains alpha-type semi-hydrated gypsum, the microstructure of the alpha-type semi-hydrated gypsum is fibrous, and the alpha-type semi-hydrated gypsum with the length-diameter ratio of 20-300 accounts for 95% or above of the total alpha-type semi-hydrated gypsum. The lightweight aggregate provided by the invention is low in density, high in porosity, high in softening coefficient, high in strength, excellent in water resistance and good in chemical compatibility with geopolymer concrete, and a new shortcut is provided for resource utilization of waste gypsum in the building field and saving of natural gravel resources.
本发明提供一种轻质骨料及其制备方法与应用。所述轻质骨料由粉料在成球工艺下制备而成，所述粉料包含α型半水石膏，所述α型半水石膏的微观形貌呈纤维状，长径比为20～300的α型半水石膏占全部α型半水石膏的95％以上。本发明提供的轻质骨料密度低、孔隙率高、软化系数高、强度高、抗水性优良，且与地聚物混凝土化学兼容性良好，为废弃石膏在建筑领域的资源化利用以及节约天然砂石资源提供了一条新捷径。
Lightweight aggregate as well as preparation method and application thereof
一种轻质骨料及其制备方法与应用
WANG ZHAOJIA (author) / LI RUNFENG (author) / HAN KANG (author) / LIU YANJUN (author) / TU YUBO (author) / LI SHA (author) / WANG LINJUN (author)
2022-02-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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