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Dedicated gypsum based self-leveling mortar for floor heating backfill

A self-leveling mortar and gypsum-based technology, applied in the field of building materials, can solve the problems of not meeting the requirements of high efficiency of real estate development, not meeting the requirements of high quality of buildings, and difficult to obtain certificates for quality, so as to facilitate construction quality control and save materials. Dosage, the effect of increasing the water consumption of materials

Inactive Publication Date: 2019-03-26
HENAN QIANGNAI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, in recent years, Shandong, Henan and other regions have successively issued the "Guiding Opinions on Accelerating the Development of Finished Housing". The newly started commercial housing will no longer be rough housing, and the delivery of "fully furnished housing" finished housing can greatly save construction decoration. Cost, reduce the output of construction waste in the decoration stage, then the construction method and efficiency of hardcover floor heating backfill leveling are a major test for real estate development costs, traditional mortar or concrete manual leveling operations, low efficiency, difficult to obtain certification for quality, and do not meet the needs of the people The requirements for high-quality buildings do not meet the requirements for high-efficiency real estate development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The powder that makes up the gypsum-based self-leveling mortar includes the following components by mass fraction: 24% ground anhydrous fluorine gypsum (180-240 mesh), 25% phosphorus building plaster, 4% α high-strength gypsum, fine sand (20 -120 mesh, mud content below 3%) 35%, light calcium carbonate 5%, cement (P.O 42.5) 4%, active calcined high territory (1200 mesh) 0.22%, lime (300 mesh) 0.6%, lithium Base bentonite (300 mesh) 0.4%, nano calcium sulfate whisker 0.2%, magnesium aluminum silicate thixotropic agent 0.3%, sodium sulfate 0.25%, hydroxypropyl methylcellulose (viscosity 300-600mPa·s) 0.05%, Hydroxypropyl starch ether 0.03%, modified amino acid gypsum retarder 0.3%, silicone defoamer 0.2%, silicone water repellent 0.2%, polycarboxylate superplasticizer 0.25%.

[0040] According to the above mass ratio, mix the components of the powder evenly, add water and mix evenly to obtain a slurry, the mass ratio of water to powder is 0.32, the initial fluidity of the...

Embodiment 2

[0042]The powder that makes up the gypsum-based self-leveling mortar includes the following components by mass fraction: ground anhydrous fluorine gypsum (180-240 mesh) 15%, phosphorus building gypsum 28%, α high-strength gypsum 3%, fine sand (20 -120 mesh, mud content less than 3%) 38%, light calcium carbonate 8%, cement (P.O 42.5) 5%, active calcined high territory (1200 mesh) 0.3%, lime (300 mesh) 0.3%, lithium Base bentonite (300 mesh) 0.2%, nano calcium sulfate whisker 0.3%, magnesium aluminum silicate thixotropic agent 0.2%, sodium sulfate 0.4%, hydroxypropyl methylcellulose (viscosity 300-600mPa·s) 0.03%, Hydroxypropyl starch ether 0.05%, modified amino acid gypsum retarder 0.3%, silicone defoamer 0.22%, silicone water repellent 0.4%, polycarboxylate superplasticizer 0.3%.

[0043] According to the above mass ratio, mix the components of the powder evenly, add water and mix to obtain a slurry. The mass ratio of water to powder is 0.3, the initial fluidity of the slurry ...

Embodiment 3

[0045] The powder that makes up the gypsum-based self-leveling mortar includes the following components by mass fraction: 30% ground anhydrous fluorine gypsum (180-240 mesh), 20% phosphorus building gypsum, 5% α high-strength gypsum, fine sand (20 -120 mesh, mud content below 3%) 30%, light calcium carbonate 8%, cement (P.O 42.5) 3.5%, active calcined high territory (1200 mesh) 0.3%, lime (300 mesh) 0.8%, lithium Base bentonite (300 mesh) 0.6%, nano calcium sulfate whisker 0.3%, magnesium aluminum silicate thixotropic agent 0.2%, sodium sulfate 0.2%, hydroxypropyl methylcellulose (viscosity 300-600mPa·s) 0.03%, Hydroxypropyl starch ether 0.02%, modified amino acid gypsum retarder 0.4%, silicone defoamer 0.3%, silicone water repellent 0.1%, polycarboxylate superplasticizer 0.25%.

[0046] According to the above mass ratio, mix the components of the powder evenly, add water and mix to obtain a slurry, the mass ratio of water to powder is 0.34, the initial fluidity of the slurry ...

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Abstract

The invention belongs to the technical field of building materials and specifically discloses dedicated gypsum based self-leveling mortar for floor heating backfill. The dedicated gypsum based self-leveling mortar is prepared from water and powder, wherein the powder is prepared from the following ingredients in mass fraction: 5 to 30% of anhydrous fluorine gypsum, 5 to 30% of phosphorus buildinggypsum, 0.5 to 10% of alpha-high strength gypsum, 20 to 50% of fine sand, 5 to 20% of light calcium carbonate, 1 to 8% of cement, 0.01 to 1% of active roasted metakaolin, 0.1 to 2% of lime, 0.1 to 2%of lithium based bentonite, 0.1 to 1% of nano calcium sulfate whisker, 0.1 to 0.5% of magnesium aluminum silicate, 0.1 to 1% of sodium sulfate, 0.01 to 0.05% of hydroxypropyl starch ether, 0.1 to 0.5%of modified amino acid gypsum retarder and the like; the mass ratio of the water to the powder is (0.28 to 0.35) to 1. When the self-leveling mortar is prepared, a lot of solid waste can be consumed;furthermore, the ground construction efficiency and the ground flatness of buildings are improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a special gypsum-based self-leveling mortar for floor heating backfill. Background technique [0002] Since the 18th National Congress of the Communist Party of China, the construction of ecological civilization has risen to a new level. A large amount of solid waste produced by the phosphorus chemical industry and the fluorine chemical industry has greatly restricted the sustainable development of the industry. With the collection of environmental protection taxes, these by-product gypsum The output enterprises can be described as "under great pressure". The production of green and environment-friendly building materials by eliminating the industrial by-product gypsum produced in large quantities in the phosphorus chemical and fluorine chemical industries is a sustainable development path to turn waste into treasure. [0003] In addition, in recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/34C04B111/62
CPCC04B28/143C04B2111/343C04B2111/62C04B2201/20C04B2201/50C04B22/143C04B14/06C04B14/28C04B14/106C04B22/064C04B14/104C04B14/383C04B22/08C04B22/147C04B24/38C04B24/383C04B24/123C04B24/42C04B2103/302
Inventor 赵松海姚梦波蔡文斌杨杰王三国张东东
Owner HENAN QIANGNAI NEW MATERIALS CO LTD
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