Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and application of anti-dry-cracking gypsum mortar
The invention provides a preparation method of anti-dry-cracking gypsum mortar. The preparation method specifically comprises the following steps: weighing the following required raw materials in parts by weight: desulfurized gypsum, quartz sand, ash calcium powder, expanded and vitrified micro bubbles, fly ash, polypropylene fibers, cement, silicon dioxide, a water repellent, rubber powder, a retarder, a water retaining agent and a water reducing agent for later use; sequentially adding the desulfurized gypsum, the quartz sand, the ash calcium powder, the expanded and vitrified micro bubbles,the coal ash, the polypropylene fibers and the cement into a stirring tank, and stirring for 15-25 minutes at the stirring speed of 1500-2000 r/min while adding until the materials are uniformly mixed, so as to obtain a mixture; sequentially adding silicon dioxide, a water repellent, rubber powder, a retarder, a water retaining agent and a water reducing agent into the mixture, and uniformly mixing to obtain a gypsum mortar product. The added polypropylene fibers are good in workability and can be uniformly dispersed, crack propagation can be prevented, cracks can be refined, and the crack resistance of the mortar is effectively improved.
本发明提供了一种防干裂石膏砂浆的制备方法，具体包括以下内容：按重量份配比称取所需原料脱硫石膏、石英砂、灰钙粉、膨胀玻化微珠、粉煤灰、聚丙烯纤维、水泥、二氧化硅、憎水剂、胶粉、缓凝剂和保水剂和减水剂备用；将上述脱硫石膏、石英砂、灰钙粉、膨胀玻化微珠、粉煤灰、聚丙烯纤维、水泥依次加入搅拌罐中，边加入边搅拌，搅拌时间15～25min，搅拌转速为1500～2000r/min，直至混合均匀，得到混合物；依次将二氧化硅、憎水剂、胶粉、缓凝剂和保水剂和减水剂加入上述混合物中，混合均匀后，得到石膏砂浆产品。本发明添加的聚丙烯纤维和易性好，能均匀分散，能够阻止裂缝扩展并细化裂缝,有效地提高砂浆的抗裂性。
Preparation method and application of anti-dry-cracking gypsum mortar
The invention provides a preparation method of anti-dry-cracking gypsum mortar. The preparation method specifically comprises the following steps: weighing the following required raw materials in parts by weight: desulfurized gypsum, quartz sand, ash calcium powder, expanded and vitrified micro bubbles, fly ash, polypropylene fibers, cement, silicon dioxide, a water repellent, rubber powder, a retarder, a water retaining agent and a water reducing agent for later use; sequentially adding the desulfurized gypsum, the quartz sand, the ash calcium powder, the expanded and vitrified micro bubbles,the coal ash, the polypropylene fibers and the cement into a stirring tank, and stirring for 15-25 minutes at the stirring speed of 1500-2000 r/min while adding until the materials are uniformly mixed, so as to obtain a mixture; sequentially adding silicon dioxide, a water repellent, rubber powder, a retarder, a water retaining agent and a water reducing agent into the mixture, and uniformly mixing to obtain a gypsum mortar product. The added polypropylene fibers are good in workability and can be uniformly dispersed, crack propagation can be prevented, cracks can be refined, and the crack resistance of the mortar is effectively improved.
本发明提供了一种防干裂石膏砂浆的制备方法，具体包括以下内容：按重量份配比称取所需原料脱硫石膏、石英砂、灰钙粉、膨胀玻化微珠、粉煤灰、聚丙烯纤维、水泥、二氧化硅、憎水剂、胶粉、缓凝剂和保水剂和减水剂备用；将上述脱硫石膏、石英砂、灰钙粉、膨胀玻化微珠、粉煤灰、聚丙烯纤维、水泥依次加入搅拌罐中，边加入边搅拌，搅拌时间15～25min，搅拌转速为1500～2000r/min，直至混合均匀，得到混合物；依次将二氧化硅、憎水剂、胶粉、缓凝剂和保水剂和减水剂加入上述混合物中，混合均匀后，得到石膏砂浆产品。本发明添加的聚丙烯纤维和易性好，能均匀分散，能够阻止裂缝扩展并细化裂缝,有效地提高砂浆的抗裂性。
Preparation method and application of anti-dry-cracking gypsum mortar
一种防干裂石膏砂浆的制备方法及应用
QU GUOLIAN (Autor:in) / CHEN XIANDE (Autor:in) / NI MINMIN (Autor:in) / QU GUOLIANG (Autor:in)
09.03.2021
Patent
Elektronische Ressource
Chinesisch
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