Lightweight plastering gypsum for building and preparation method thereof: Fid-Bau Portal

Lightweight plastering gypsum for building and preparation method thereof

FANG WEIFENG / WANG RONGDONG / WANG LINA / LI HUANGEN / LUO HANGYU / SUN SHAOJUN / YE SHENGFENG / XU JUPING

The invention discloses light plastering gypsum for buildings and a preparation method thereof, and relates to the field of building materials, and the key point of the technical scheme is that the light plastering gypsum comprises the following components in percentage by weight: 60-80% of building gypsum, 5-12% of expanded and vitrified small balls, 8-35% of regenerated micro powder and 0-5% of an additive. The recycled micro-powder lightweight plastering gypsum is produced by using the recycled micro-powder as aggregate, the recycled micro-powder has certain fineness and shrinkage performance, and when the recycled micro-powder is used for the lightweight plastering gypsum, due to the fact that the building gypsum has a certain micro-expansion function, the use amount of the building gypsum is controlled to be 60%-80%, and the use amount of the recycled micro-powder is controlled to be 60%-80%. The doping amount of the regenerated micro powder is less than 35%, so that the shrinkage rate generated by the regenerated micro powder is far less than the swelling amount of the building gypsum, the shrinkage phenomenon of a finished product is avoided, the building wastes can be well recycled, the energy is saved, the environment is protected, and the cost is saved.

本发明公开一种建筑用轻质抹灰石膏及其制备方法，涉及建筑材料领域，其技术方案要点是：包括以下重量百分比的组分：建筑石膏60％‑80％、膨胀玻化微珠5％‑12％、再生微粉8％‑35％、外加剂0％‑5％。本发明涉及的再生微粉轻质抹灰石膏采用再生微粉作为骨料进行生产，再生微粉具有一定的细度以及收缩性能，再生微粉用于轻质抹灰石膏时，由于建筑石膏本身具有一定的微膨胀功能，故而将建筑石膏用量控制在60％‑80％之间，而再生微粉的掺量小于35％，使得再生微粉产生的收缩率远小于建筑石膏的膨胀量，因此不会使成品发生收缩现象，能很好地对建筑垃圾进行回收再利用，节能环保，节约成本。

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