Gypsum plastering mortar suitable for mechanical spray coating construction and construction process of gypsum plastering mortar
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A technology of plastering mortar and gypsum, which is applied in the direction of construction and building construction, etc., to achieve the effects of easy pumping, increased strength and good adhesion
Inactive Publication Date: 2019-08-23
浙江兆山建材科技有限公司
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The mortar capable of mechanical spraying construction needs to have pumpability and sprayability, that is, it has excellent rheological properties, adhesion, etc., but ordinary gypsum mortar is difficult to meet the performance of mechanical spraying, and the mechanical spraying mortar has crack resistance and strength. There is a certain gap with manual construction mortar in other aspects
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Embodiment 1
[0031] Embodiment 1, the gypsum plastering mortar suitable for machine spraying spraying construction comprises the raw materials of following weight ratio:
[0032] Gypsum composite gel 43.9%, said gypsum composite gel comprises the following components by weight: desulfurized gypsum 25.2%, waste phosphogypsum 18.5%, gypsum retarder 0.2%, alkaline activator 0.05%, said alkaline The activator is quicklime;
[0033] 20% fine aggregate, using river sand, the maximum particle size is not greater than 0.3mm;
[0034] 3% modified attapulgite, the modified attapulgite is calcined at 400°C for 2h in a muffle furnace, and then calcined at 820°C for 2h to obtain calcined modified attapulgite;
[0035] 8% fly ash, adding fly ash is beneficial to improve the gradation of gypsum plastering mortar and increase the fluidity of slurry;
[0036] Vitrified microbeads 3.5%;
[0037] Redispersible latex powder 1%;
[0038] 0.5% of anti-cracking water-retaining agent, containing 0.1% of hydro...
Embodiment 2
[0050] Embodiment two, the gypsum plastering mortar suitable for machine spraying spraying construction comprises the raw materials of following weight ratio:
[0051] Gypsum composite gel 37.9%, said gypsum composite gel comprises the following components by weight: desulfurized gypsum 21.6%, waste phosphogypsum 16.1%, gypsum retarder 0.2%, alkaline activator 0.05%, said alkaline The activator is quicklime;
[0052] 24% fine aggregate, using river sand, the maximum particle size is not greater than 0.3mm;
[0053] 3% modified attapulgite, the modified attapulgite is calcined at 400°C for 2h in a muffle furnace, and then calcined at 820°C for 2h to obtain calcined modified attapulgite;
[0054] Fly ash 6%, adding fly ash is beneficial to improve the gradation of gypsum plastering mortar and increase the fluidity of slurry;
[0055] Vitrified microbeads 2.5%;
[0056] Redispersible latex powder 1%;
[0057] 0.5% of anti-cracking water-retaining agent, containing 0.1% of hyd...
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Abstract
The invention discloses gypsum plastering mortar suitable for mechanical spray coating construction and a construction process of the gypsum plastering mortar. The gypsum plastering mortar comprises the following raw materials, by weight: gypsum composite gel, fine aggregate, modified attapulgite clay, fly ash, vitrified microbeads, redispersible latex powder, an anti-cracking water retention agent, a rheological lubricant, and an air entraining agent. The gypsum plastering mortar provided by the invention adopts the composite gypsum gel instead of a single gypsum material, so that dependenceon a single gypsum species is reduced, and the mortar has good fluidity and workability, and is easy to pump; the gypsum plastering mortar adopts the composite anti-cracking water retention agent to improve water retention, fluidity and shrinkage compensation of mortar, so that the gypsum plastering mortar has the advantages of a high water retention rate, good flexibility, strong sag resistance and the like; the gypsum plastering mortar is suitable for mechanical spray coating operation, after spray coating is performed, a sodium carbonate solution is adopted for reinforcement treatment, so that strength and compact smoothness of a plastered surface are significantly improved; and the gypsum plastering mortar has good adhesion to a wall, and the hardened mortar is firmly bonded with a substrate.
Description
technical field [0001] The invention relates to a building material, in particular to a gypsum plastering mortar suitable for machine-spraying construction and a construction process thereof. Background technique [0002] Gypsum plastering mortar is used to plaster the bottom layer, surface layer and insulation layer on various walls and ceilings in the building. It has good construction performance, strong operability, small shrinkage, not easy to hollow and crack, and has good Excellent dehumidification and hygroscopicity, has the function of regulating indoor humidity. However, in the construction process, mainly hand plastering. Pure manual plastering is labor-intensive, low in efficiency, construction quality is not guaranteed, and the late repair rate is high. At the same time, due to the increase in labor costs and the shortage of professional construction personnel in recent years, construction costs have continued to increase. The gypsum mortar applied by mechaniz...
Claims
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Application Information
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