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Compression-resisting and moisture-preserving wet-mixed mortar and preparation method thereof

A technology for wet-mixing mortar and sycamore, applied in the field of building materials, can solve problems such as loss of mortar consistency, unfavorable construction, changes in mortar performance, etc., and achieve the effect of excellent moisture retention

Active Publication Date: 2017-05-31
广州市盈坚建材科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the wet-mixed mortar needs to be used within the specified time, the consistency of the mortar may be lost due to the influence of time and weather conditions during transportation and storage, and the performance of the final mortar may also change, which is not conducive to construction

Method used

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  • Compression-resisting and moisture-preserving wet-mixed mortar and preparation method thereof
  • Compression-resisting and moisture-preserving wet-mixed mortar and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] In the embodiment of the present invention, a wet-mixed mortar that resists pressure and keeps moisture is composed of the following raw materials in terms of mass percentage: 18% cement, 8% coal gangue, 2.0% fluorogypsum, 7% volcanic rock, 30% quartz sand, Modified sycamore bark 1.3%, fly ash 4%, castor oil 0.04%, polyvinyl alcohol 0.024%, sodium polyacrylate 0.054%, the balance is water;

[0022] Wherein, the preparation steps of modified sycamore bark are:

[0023] 1) Dry the syringa bark, superfinely pulverize it into 15 μm sycamore bark powder, and set aside;

[0024] 2) immerse the plane bark powder in 35% sodium hydroxide solution with a mass concentration 4 times its mass for 2 hours;

[0025] 3) Then add silicic acid of 1.5 times the quality of the plane bark powder, and treat it with a microwave with a power of 180W for 3 minutes to obtain a mixed solution;

[0026] 4) Fill the mixture with nitrogen to fully remove oxygen, then add ferric nitrate nonahydrate...

Embodiment 2

[0032] In the embodiment of the present invention, a wet-mixed mortar that resists pressure and keeps moisture is composed of the following raw materials in terms of mass percentage: 22% cement, 6% coal gangue, 3.5% fluorogypsum, 5% volcanic rock, 34% quartz sand, Modified plane bark 1.1%, fly ash 7%, castor oil 0.03%, polyvinyl alcohol 0.027%, sodium polyacrylate 0.050%, the balance is water;

[0033] Wherein, the preparation steps of modified sycamore bark are:

[0034] 1) Dry the sycamore bark and superfinely pulverize it into 18 μm sycamore bark powder for subsequent use;

[0035] 2) immerse the plane bark powder in 32% sodium hydroxide solution with a mass concentration 5 times of its mass for 3 hours;

[0036] 3) Then add silicic acid of 1.8 times the quality of the plane bark powder, and treat it with a microwave with a power of 160W for 5 minutes to obtain a mixed solution;

[0037] 4) Fill the mixture with nitrogen to fully remove oxygen, then add ferric nitrate non...

Embodiment 3

[0043] In the embodiment of the present invention, a wet-mixed mortar that resists pressure and keeps moisture, is composed of the following raw materials in terms of mass percentage: 19% cement, 7.4% coal gangue, 2.6% fluorogypsum, 6.0% volcanic rock, 32% quartz sand, Modified sycamore bark 1.24%, fly ash 5%, castor oil 0.037%, polyvinyl alcohol 0.025%, sodium polyacrylate 0.053%, and the balance is water;

[0044] Wherein, the preparation steps of modified sycamore bark are:

[0045] 1) Dry the syringa bark, superfinely pulverize it into 15 μm sycamore bark powder, and set aside;

[0046] 2) immerse the plane bark powder in 35% sodium hydroxide solution with a mass concentration 4 times its mass for 2 hours;

[0047] 3) Then add silicic acid of 1.5 times the quality of the plane bark powder, and treat it with a microwave with a power of 180W for 3 minutes to obtain a mixed solution;

[0048] 4) Fill the mixture with nitrogen to fully remove oxygen, then add ferric nitrate ...

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Abstract

The invention discloses compression-resisting and moisture-preserving wet-mixed mortar and a preparation method thereof. The wet-mixed mortar is prepared from the following raw materials in percentage by mass: 18%-22% of cement, 6%-8% of coal gangue, 2.0%-3.5% of fluorgypsum, 5%-7% of lava, 30%-34% of quartz sand, 1.1%-1.3% of modified sycamore bark, 4%-7% of coal ash, 0.03%-0.04% of castor oil, 0.024%-0.027% of polyvinyl alcohol, 0.050%-0.054% of sodium polyacrylate and the balance of water, wherein the modified sycamore bark is prepared by the steps of drying, crushing, soaking by virtue of sodium hydroxide, adding silicic acid, carrying out microwave processing, introducing nitrogen, adding iron nitrate nonahydrate and trimethyl citrate to react for 1-2 hours, filtering to obtain filter residues, washing with ethanol, and drying. By virtue of the synergistic effects of the modified sycamore bark, the lava, the fluorgypsum and the other components, the wet-mixed mortar has excellent moisture-preserving property and compressive strength.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a pressure-resistant and moisture-retaining wet-mix mortar and a preparation method thereof. Background technique [0002] Wet-mixed mortar is a mortar made by mixing cement, water, sand, mineral admixtures and various functional admixtures in a certain proportion in a mixing station. At present, wet-mixed plastering mortar, wet-mixed masonry mortar, wet-mixed mortar Mainly mix floor mortar and wet mix waterproof mortar. Since the wet-mixed mortar needs to be used within the specified time, the consistency of the mortar may be lost due to the influence of time and weather conditions during transportation and storage, and the performance of the final mortar may also change, which is not conducive to construction. Therefore, wet-mixed mortar needs to have good plastic stability, that is, the mortar has high water retention and long setting time, which can ensure that it...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B20/10
CPCC04B20/107C04B28/142C04B2201/50C04B7/00C04B18/12C04B14/14C04B14/06C04B18/265C04B18/08C04B24/08C04B24/2623C04B24/26C04B20/1066C04B20/1022
Inventor 肖艾平
Owner 广州市盈坚建材科技发展有限公司
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