Plastering gypsum powder
Plastering gypsum powder is a new type of green plastering material for wall interiors. It can solve the problems of plastering on many material surfaces in building engineerings, such as empty drums and cracking quality, especially for concrete, aerated concrete, polystyrene board, and other substrates.
| Variety | Feature | Performance | Application |
| Plastering gypsum powder | Easy to operate, convenient construction, manual, mechanical | Initial setting ≥1 hour, final setting <8 hours, bending resistance 3MPa, pressure resistance 5MPa. | The interior wall layer material and insulation layer material of the building |
Performance Features
1, plaster has good workability, water retention, easy to operate after the wall.
2, the use of plaster plaster, project quality is good, the wall is dense and smooth without ash, and higher strength without contraction, no empty drum, no cracking, no smell.
3, plaster plaster layer congealed hard block, the more 1-2 hours after the completion of the bottom plastering can be carried out on the surface plastering, do not need different mortar plastering hard top to wait for the base dry before plastering ash, decoration project period can be shortened, greatly improve work efficiency, speed up the progress of the project.
4, plaster and material can be well bonded together, is not limited by thickness. Because of the workability of plaster and slurry fluidity are good, easy to penetrate into the wall ceiling gap and concave and convex cracks, hardened volume expansion, strengthen the plaster layer and wall bonding strength, so plaster plaster in smooth concrete surface without chisel hair can be plastered directly. Especially in the paint plaster touch on the aerated concrete wall effect is more. Due to the good adhesion of the plaster, the ground ash is less, labor and material saving in the operation, and the civilized construction of the construction site can be realized
5, the plaster plaster layer has the moisture absorption and drainage performance, which is conducive to the drying of the porous wall surface itself. So that the air wall material internal moisture content decreased, conducive to the long-term stability of the wall.
6. Plaster gypsum hardening body is a kind of porous material, the thermal conductivity is generally about 0.35W/m.k, its thermal insulation capacity is 2 times that of red brick and 3 times that of concrete under the same thickness. At the same time, plaster hardened body can attenuate sound pressure, prevent sound energy transmission, sound insulation performance is good.
7, plaster in the hardening process, the formation of countless smiling honeycomb breathing hole, when the indoor humidity is large, automatic moisture absorption, in the opposite condition, and can automatically release the reserve water, so repeated cycle, clever indoor humidity
Application scope and technical index:
| ITEM | UNIT | Aerated concrete block Special type plaster | Special plaster plaster for concrete surface |
| operable time | Min | ≥50 | ≥50 |
| initial setting time | min | ≥60 | ≥60 |
| final setting time | min | ≤240 | ≤120 |
| water-retaining property | % | ≥75 | ≥70 |
| crack resistance | – | 24 hours without crack | 24 hours without crack |
| Absolute dry flexural strength | MPA | ≥2.0 | ≥2.5 |
| Absolute dry compressive strength | MPA | ≥4.0 | ≥5.0 |
| shear bonding strength | MPA | ≥0.3 | ≥0.4 |
| shrinking percentag | % | ≤0.06 | ≤0,06 |