Gypsum-based mechanically-jetted mortar and preparation method thereof, and gypsum-based mechanically-jetted decorative material slurry

A machine sprayed mortar and gypsum-based technology, which is applied in the field of gypsum-based machine-sprayed fabric slurry, gypsum-based machine-sprayed mortar and its preparation, can solve problems such as low cement-based mortar adhesion, peeling off of the plaster layer, and hollow walls , to achieve the effects of easy adjustment and control, delayed setting time, and good sound insulation performance

Active Publication Date: 2019-04-30
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its own material defects, cement-based plastering mortar often has quality problems such as wall hollowing, cracking, and peeling off of the plaster layer. At the same time, due to the low adhesion of cement-based mortar, it is necessary to apply interface agents or Shotcrete treatment is labor-intensive and time-consuming

Method used

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  • Gypsum-based mechanically-jetted mortar and preparation method thereof, and gypsum-based mechanically-jetted decorative material slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (1) Weigh 100g of α high-strength gypsum (80 mesh) prepared from desulfurized gypsum, 10g of 32.5# ordinary Portland cement, 0.15g of hydroxypropyl methylcellulose ether, and high-efficiency gypsum-based retarder Retardan P (purchased from TRICOSAL, Germany) 0.01g, water reducer R+D Melflux ECO 5691F (purchased from BASF) 0.03g, redispersible latex powder 5010N (purchased from Wacker) 1g, grade II fly ash 5g, river sand 50g, (NH 4 ) 2 SO 4 0.05g, 90-100mm standard consistency of mixing water for mortar.

[0060] (2) During construction, put the above-mentioned premixed powder components (other substances except coagulation enhancer and mixing water) into the mixer, mix and stir for 2-3 minutes, and then put into the mechanical spraying equipment; (NH 4 ) 2 SO 4 Use an appropriate amount of mixing water to dissolve and prepare a coagulation enhancer solution; when spraying is about to be done, add the coagulation enhancer solution and the remaining mixing water to the prem...

Embodiment 2

[0063] (1) Weigh 100g of α high-strength gypsum (80 mesh) prepared from desulfurized gypsum, 20g of 32.5# ordinary Portland cement, 0.15g of hydroxypropyl methylcellulose ether, and high-efficiency gypsum-based retarder Retardan P (purchased from German TRICOSAL company) 0.01g, water reducing agent R+D Melflux ECO 5691F (purchased from BASF company) 0.05g, redispersible latex powder 5010N (purchased from Wacker) 1g, grade II fly ash 5g, river sand 60g, (NH 4 ) 2 SO 4 0.05g, 90-100mm standard consistency of mixing water for mortar.

[0064] (2) During construction, put the above-mentioned premixed powder components into the mixer and mix and stir for 2-3 minutes, and then put them into the mechanical spraying equipment; add the (NH 4 ) 2 SO 4 Use an appropriate amount of mixing water to dissolve and prepare the coagulation enhancer solution; when spraying, before the premixed powder passes through the nozzle of the mechanical spraying equipment, add the coagulation enhancer soluti...

Embodiment 3

[0067] (1) Weigh 100g of α high-strength gypsum (80 mesh) prepared from desulfurized gypsum, 30g of 42.5# ordinary Portland cement, 0.15g of hydroxypropyl methylcellulose ether, and high-efficiency gypsum-based retarder Retardan P (purchased from German TRICOSAL company) 0.01g, water reducing agent R+D Melflux ECO 5691F (purchased from BASF company) 0.04g, redispersible latex powder 5010N (purchased from Wacker) 1g, grade II fly ash 5g, river sand 80g, CaSO 4 ·2H 2 O 0.05g, mortar of 90-100mm standard consistency of water mixing water.

[0068] (2) During construction, put the above-mentioned premixed powder components into the mixer and mix and stir for 2-3 minutes, and then put them into the mechanical spraying equipment; put the CaSO 4 ·2H 2 O Dissolve with an appropriate amount of mixing water and prepare it into a coagulation enhancer solution; when spraying is about to be done, add the coagulation enhancer solution and the remaining mixing water to the premixed powder, mix e...

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Abstract

The present invention discloses a gypsum-based mechanically-jetted mortar and a preparation method thereof, and a gypsum-based mechanically-jetted decorative material slurry, wherein the gypsum-basedmechanically-jetted mortar comprises desulfurization gypsum, a setting adjusting enhancer, cement, a water retaining agent, a retarder, a water reducing agent, latex powder, fly ash and an aggregate.The preparation method comprises: mixing components excluding the setting adjusting enhancer to obtain pre-mixed powder; preparing a solution from the setting adjusting enhancer and water; and addingthe setting adjusting enhancer solution and water before the pre-mixed powder passes through the spraying nozzle of a mechanical spraying device. The gypsum-based mechanically-jetted decorative material slurry comprises the gypsum-based mechanically-jetted mortar and water. According to the present invention, the setting time of the gypsum-based mechanically-jetted mortar before passing through the spraying nozzle can be delayed to the maximum extent, and can be rapidly set after passing through the spraying nozzle, such that the sprayed decorative material slurry has high strength after beinghardened; and various additives in the mortar have good compatibility so as to easily adjust and control.

Description

Technical field [0001] This application relates to but not limited to the technical field of new building materials, and particularly relates to but not limited to a gypsum-based machine blasting mortar and a preparation method thereof, and a gypsum-based machine blasting fabric slurry prepared by the gypsum-based machine blasting slurry. Background technique [0002] Plastering mortar can be divided into two categories: cement-based and gypsum-based according to the main cementing materials. Due to its material defects, cement-based plastering mortar often produces quality problems such as wall hollowing, cracking, and peeling of the stucco layer. At the same time, due to the low bonding force of cement-based mortar, it is necessary to apply interface agents or Shotcrete treatment is labor-intensive and time-consuming. Gypsum-based plastering mortar usually refers to ready-mixed dry-mixed mortar with gypsum as the main cementitious material, mainly including manual plastering a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/144C04B2111/00017C04B2201/20C04B2201/50C04B7/02C04B24/383C04B2103/22C04B2103/0057C04B18/08C04B14/06C04B22/142C04B22/143C04B28/14
Inventor 王丽
Owner BEIJING NEW BUILDING MATERIALS PLC
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