Machine sprayed mortar for thin plastering system

A technology for machine-spraying mortar and thin plastering, which is used in the field of machine-spraying mortar for thin plastering systems and building materials, can solve the problem that the construction progress and strength have not been qualitatively improved or improved, the mortar performance cannot be satisfied at the same time, and the mortar is bonded. Low strength and other problems, to shorten the construction period, enhance sag resistance, and reduce equipment damage

Active Publication Date: 2017-06-13
亚士创能科技(滁州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to technical reasons such as aggregate particle grading, raw material screening, and raw material formulation, ordinary mortar has not achieved substantial breakthroughs. The performance of mortar cannot meet the requirements of mechanical spraying construction technology at the same time, so there is still no progress in construction progress and strength. To get qualitative improvement or enhancement, the main problems are:
[0003] 1. The pumping performance of the existing ordinary mortar mechanized spraying is poor, and pipe plugging is prone to occur;
[0004] 2. Poor sag resistance, which is not conducive to forming a plastering mortar layer on the insulation material;
[0005] 3. The bonding strength of the mortar is low and does not meet the requirements

Method used

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  • Machine sprayed mortar for thin plastering system
  • Machine sprayed mortar for thin plastering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] At room temperature, according to mass percentage, the ordinary Portland cement P.O42.5 20%, 40-120 mesh river sand 76.11%, heavy calcium 2%, water retention thickening material 1.83% (for redispersible latex powder 1.5%, hydroxypropyl methyl cellulose ether 0.2%, starch ether 0.03%, 3mm polypropylene fiber 0.1%), water reducing agent 0.05%, water repellent 0.01%, mixed evenly in the mixing equipment, namely Special machine blasting mortar for thin plastering system. Under normal temperature and pressure, 22% by weight of water is added to the blasted mortar for the special machine for thin plastering system and stirred to form slurry, which is directly used for the mechanized construction of the thin plastering system.

[0029] Wherein, the 40-120 mesh river sand has the following particle gradation:

[0030] 30-40 mesh 2%

[0031] 40-60 mesh 85%

[0032] 60-80 mesh 5%

[0033] 80-100 mesh 5%

[0034] 100-120 mesh 3%.

Embodiment 2

[0036] At room temperature, according to mass percentage, mix ordinary Portland cement P.O42.5 30%, 40-120 mesh river sand 58.65%, metakaolin 8%, water-retaining thickening material 3.15% (re-dispersible latex powder 2.5%, hydroxypropyl methyl cellulose ether 0.4%, starch ether 0.05%, 500μm wood fiber 0.2%), water reducing agent 0.15%, water repellent 0.05%. It is evenly mixed in the mixing equipment, which is the special machine blasting mortar for the thin plastering system. Under normal temperature and pressure, compared with the special machine-blasted mortar for the thin plastering system, 22% by weight of water is added to stir to form a slurry, which is directly used for the mechanized construction of the thin plastering system.

[0037] Wherein, the 40-120 mesh river sand has the following particle gradation:

[0038] 30-40 mesh 10%

[0039] 40-60 mesh 35%

[0040] 60-80 mesh 25%

[0041] 80-100 mesh 25%

[0042] 100-120 mesh 5%.

Embodiment 3

[0044] At room temperature, according to mass percentage, mix ordinary Portland cement P.O42. 25%, 40-120 mesh river sand 67.32%, mineral powder 5%, water retention thickening material 2.45% (re-dispersible latex powder 2.0 %, hydroxypropyl methyl cellulose ether 0.3%, starch ether 0.05%, 3mm polypropylene fiber 0.2%), thixotropic agent 0.05%, water reducing agent 0.15%, water repellent 0.03%. It is evenly mixed in the mixing equipment, which is the special machine blasting mortar for the thin plastering system. Under normal temperature and pressure, compared with the special machine-blasted mortar for the thin plastering system, 21% by weight of water is added to stir to form a slurry, which is directly used for the mechanized construction of the thin plastering system.

[0045] Wherein, the 40-120 mesh river sand has the following particle gradation:

[0046] 30-40 mesh 5%

[0047] 40-60 mesh 60%

[0048] 60-80 mesh 20%

[0049] 80-100 mesh 10%

[0050] 100-120 mesh 5%.

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PUM

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Abstract

The invention provides machine sprayed mortar for a thin plastering system. The mortar comprises the components in percentages by weight: 20-30% of common silicate cement, 58.65-76.11% of 40-120-mesh river sand, 2-8% of filler, 1.83-3.15% of a water-retaining thickening material, 0-0.2% of a thixotropic agent, 0.05-0.15% of a water reducer and 0.01-0.05% of a water repellent, wherein the water-retaining thickening material is prepared by mixing 1.5-2.5% of redispersible latex powder, 0.2-0.4% of hydroxypropyl methyl cellulose, 0.03-0.05% of starch ether and 0.1-0.2% of anti-crack fibers. The components are uniformly mixed in a mixing device, and 18-22% by weight of water is added at a normal temperature and a normal pressure to stir slurry which can be used for mechanical construction of the thin plastering system, so that the construction efficiency is increased, the construction period is shortened, and the labor cost is lowered.

Description

Technical field [0001] The invention relates to building materials, belonging to the field of mortar for construction, and more specifically, to a machine-blasted mortar for a thin plastering system. Background technique [0002] Thin-plastered external wall insulation system (referred to as "thin-plastered system") is to paste the insulation board on the external wall with special bonding mortar as required (if there are special reinforcement requirements, expansion screws can also be used to anchor) , And then apply mortar on the surface of the insulation board, and press into the alkali-resistant glass fiber mesh when applying the mortar to strengthen it to form a crack-resistant mortar protective layer (that is, the plastering mortar layer), and finally coating the paint to form a decorative surface layer (If the decorative surface is ceramic tiles, galvanized steel wire mesh, special tile adhesive, jointing agent, etc. should be used instead). Among them, the plastering mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B14/068C04B14/28C04B2103/44C04B14/02C04B2103/302C04B2103/65C04B14/10
Inventor 徐贺田婷吴俊敏徐志新李金钟
Owner 亚士创能科技(滁州)有限公司
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