Gypsum mortar

Abstract

The invention discloses gypsum mortar. The gypsum mortar comprises the following components in parts by weight: 25-45 parts of calcined gypsum, 20-30 parts of desulfurized gypsum, 20-30 parts of coal ash, 2-5 parts of polypropylene short fiber, 0.5-2.5 parts of magnesium lithium silicate gel, 0.2-0.5 part of hydroxypropyl methyl cellulose ether, 0.1-0.2 part of FDN high efficiency water reducer, and 0.05-0.1 part of an air entraining agent. The gypsum mortar is convenient for construction, has strong binding power and minimum inflation property, avoids the phenomenon that a floated coat has empty drum and cracks, and has superior use effect compared with the existing national standard of <GB / T28627-2012>.

Description

technical field

[0001] The invention relates to a gypsum mortar. Background technique

[0002] When the gypsum mortar prepared by traditional natural gypsum is used in building construction, due to the uneven internal stress of the gypsum mortar used for construction, it does not have good compressive and flexural properties. The construction thickness is limited. If the plaster thickness exceeds 10mm, it should be constructed in layers, and the thickness of each layer should be controlled within 10mm. Especially when the aerated concrete block is plastered, it is more likely to cause the plaster layer to be hollow, cracked, and the ash layer to fall to the ground. Contents of the invention

[0003] The object of the present invention is to provide a gypsum mortar with better performance in order to solve the defects in the prior art.

[0004] In order to achieve the above object, the present invention provides a kind of gypsum mortar, comprising the following compon...