High-water-resistance gypsum-based decorative mortar and preparation method thereof

A decorative mortar and water-resistant technology, applied in the field of building materials, can solve the problems of fast setting time, high water absorption, water resistance, etc., and achieve the effect of improving water retention, high softening coefficient and good water resistance

Inactive Publication Date: 2021-02-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although gypsum-based decorative mortar has the above advantages, it also has disadvantages such as fast setting time, high water absorption, water resistance, and low strength.

Method used

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  • High-water-resistance gypsum-based decorative mortar and preparation method thereof

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preparation example Construction

[0038] The preparation method of highly water-resistant gypsum-based decorative mortar comprises the following steps:

[0039] Step 1, weighing various raw materials according to weight ratio.

[0040] Step 2, add the weighed gypsum, aluminate cement and slag fine powder together into a twin-shaft horizontal mixer and mix for 1min-2min.

[0041] Step 3, add the weighed latex powder, cellulose ether, retarder, defoamer, water repellent and inorganic pigment into the twin-shaft horizontal mixer and continue mixing for 2min-4min.

[0042] Step 4: Add the weighed quartz sand into a biaxial horizontal mixer and mix for 2-3 minutes to prepare a highly water-resistant gypsum-based decorative mortar.

[0043] When in use, add water to the high water-resistant gypsum-based decorative mortar, the amount of water added is 15%-18% of the total weight of the high water-resistant gypsum-based decorative mortar. Put it into a forced mixer, and slowly add the required amount of water while ...

Embodiment 1

[0046] A high water-resistant gypsum-based decorative mortar, according to 100 parts of hemihydrate desulfurized gypsum, 8 parts of aluminate cement, 12 parts of slag micropowder, 6 parts of latex powder, 0.2 part of cellulose ether, 0.1 part of defoamer, water repellent 1 part, 1.2 parts of inorganic pigment, and 240 parts of quartz sand are configured by weight ratio.

[0047] First add the weighed gypsum, aluminate cement and slag micropowder into the double-shaft horizontal mixer and mix for 1min-2min, then add the weighed latex powder, cellulose ether, retarder, defoamer, hydrophobic Put the water agent and inorganic pigment together into the double-shaft horizontal mixer and continue mixing for 2min-4min, then add the quartz sand into the double-shaft horizontal mixer and mix for 2min-3min to obtain a high water-resistant gypsum-based decorative mortar.

[0048] Add water according to 18% of the total weight of the high water-resistant gypsum-based decorative mortar, and...

Embodiment 2

[0051] A high water-resistant gypsum-based decorative mortar, according to 100 parts of hemihydrate desulfurized gypsum, 15 parts of aluminate cement, 15 parts of slag micropowder, 8 parts of latex powder, 0.25 parts of cellulose ether, 0.3 parts of defoaming agent, water repellent 1.2 parts, 2.6 parts of inorganic pigment and 390 parts of quartz sand are configured by weight ratio.

[0052] First add the weighed gypsum, aluminate cement and slag micropowder into the double-shaft horizontal mixer and mix for 1min-2min, then add the weighed latex powder, cellulose ether, retarder, defoamer, hydrophobic Put the water agent and inorganic pigment together into the double-shaft horizontal mixer and continue mixing for 2min-4min, then add the quartz sand into the double-shaft horizontal mixer and mix for 2min-3min to obtain a high water-resistant gypsum-based decorative mortar.

[0053] Add water according to 15.5% of the total weight of the high water-resistant gypsum-based decorat...

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Abstract

The invention belongs to the technical field of building materials, and provides high-water-resistance gypsum-based decorative mortar and a preparation method thereof. The high-water-resistance gypsum-based decorative mortar is prepared by mixing gypsum, aluminate cement, superfine slag powder, latex powder, cellulose ether, a retarder, a defoaming agent, a water repellent, inorganic pigment and quartz sand. During preparation, the gypsum, the aluminate cement and the superfine slag powder are mixed, and then the rest raw materials are added and mixed. The decorative mortar has the advantagesof excellent physical and mechanical properties, controllable setting time and operable time, high softening coefficient, good water resistance, fast strength development, high strength, good bondingstrength, no shrinkage cracking problem, no efflorescence, stain resistance, good decorative effect and the like. The preparation method is simple, is suitable for decoration engineering of building interior walls, is especially suitable for a building wall internal thermal insulation and decoration integrated system, can ensure good performances in a short time, improves the construction efficiency, has excellent long-term use efficiency, and ensures the engineering quality.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a highly water-resistant gypsum-based decorative mortar and a preparation method thereof. Background technique [0002] In recent years, with the vigorous development of green buildings, prefabricated buildings and building energy conservation in China, as a new building wall decoration material, inorganic decorative mortar has many advantages and characteristics, such as good air permeability and water permeability, easy to apply construction, It has the characteristics of high adaptability to wall materials, high bonding strength, good durability, no aging problem, good decorative effect, and color is not easy to fade. It has been used in the surface decoration of inner and outer walls of buildings. [0003] Gypsum-based decorative mortar is a kind of inorganic decorative mortar. Due to its light weight, micro-expansion, temperature and humidity adjustmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/34C04B111/82
CPCC04B28/144C04B2111/82C04B2111/343C04B2201/50C04B2201/10C04B7/32C04B18/141C04B24/26C04B24/383C04B14/06C04B24/14C04B24/42C04B14/308
Inventor 张国防王博陆小培王顺祥王培铭
Owner TONGJI UNIV
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