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Preparation method of water-retaining and air-permeable dry-mixed mortar

A dry-mixed mortar and air-permeable technology is applied in the field of preparation of water-retaining and air-permeable dry-mixed mortar, which can solve the problems of poor air permeability and water retention performance.

Inactive Publication Date: 2018-06-19
陈合华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to provide a method for preparing water-retaining and breathable dry-mixed mortar in view of the defects of poor air permeability and water-retaining performance of common dry-mixed mortars at present.

Method used

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  • Preparation method of water-retaining and air-permeable dry-mixed mortar

Examples

Experimental program
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Effect test

example 1

[0025] Measure the sodium silicate solution with a mass fraction of 30% and pour it into a beaker, adjust the pH of the sodium silicate solution to 5.5 with a concentration of 1mol / L hydrochloric acid, stir and react for 20 minutes, then move the beaker into an oil bath, and heat up to 110°C , continue to stir and react for 40 minutes to obtain a reaction solution; the above reaction solution is mixed with a mass fraction of 16% sodium hydroxide solution and a mass fraction of 20% lithium metaaluminate solution to obtain a prefabricated solution at a mass ratio of 1:3:12. Put the prefabricated liquid into the high-pressure hydrothermal kettle, and then add nickel boride with 2% of the prefabricated liquid quality and 8% tartaric acid with the prefabricated liquid quality in the high-pressure hydrothermal kettle; Under the conditions of pressure of 1.2MPa and temperature of 200°C, hydrothermal reaction was carried out for 20 hours. After the reaction was completed, the filter re...

example 2

[0027] Measure the sodium silicate solution with a mass fraction of 30% and pour it into a beaker, adjust the pH of the sodium silicate solution to 6.0 with a concentration of 1mol / L hydrochloric acid, stir and react for 25 minutes, then move the beaker into an oil bath, and heat up to 115°C , continue to stir and react for 50 minutes to obtain a reaction solution; the above reaction solution is mixed with a mass fraction of 16% sodium hydroxide solution and a mass fraction of 20% lithium metaaluminate solution to obtain a prefabricated solution at a mass ratio of 1:3:12. Put the prefabricated liquid into the high-pressure hydrothermal kettle, and then add nickel boride with 2% of the prefabricated liquid quality and 8% tartaric acid with the prefabricated liquid quality in the high-pressure hydrothermal kettle; Under the condition of pressure of 1.3MPa and temperature of 210°C, hydrothermal reaction was carried out for 22 hours. After the reaction was completed, the filter res...

example 3

[0029] Measure the sodium silicate solution with a mass fraction of 30% and pour it into a beaker, adjust the pH of the sodium silicate solution to 6.5 with a concentration of 1mol / L hydrochloric acid, stir and react for 30 minutes, then move the beaker into an oil bath, and heat up to 120°C , continue to stir and react for 60 minutes to obtain a reaction solution; the above reaction solution is mixed with a mass fraction of 16% sodium hydroxide solution and a mass fraction of 20% lithium metaaluminate solution to obtain a prefabricated solution at a mass ratio of 1:3:12. Put the prefabricated liquid into the high-pressure hydrothermal kettle, and then add nickel boride with 2% of the prefabricated liquid quality and 8% tartaric acid with the prefabricated liquid quality in the high-pressure hydrothermal kettle; Under the conditions of pressure of 1.4MPa and temperature of 220°C, hydrothermal reaction was carried out for 24 hours. After the reaction was completed, the filter re...

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Abstract

The invention discloses a preparation method of water-retaining and air-permeable dry-mixed mortar, and belongs to the technical field of mortar preparation. The method comprises the following steps:firstly, hydrochloric acid and sodium silicate are subjected to reaction, and orthosilicic acid is generated and taken as a silicon source; then, alkali and aluminum source lithium metaaluminate are added, organic acid and nickel boride are added, swim bladder is boiled with water, a boiled solution rich in swim bladder collagen protein is obtained, the boiled solution and glucose are blended, concentrated and fermented with grape skin, glucose is decomposed, and hydrophilic hydroxy and formyl are generated; finally, a functionalized molecular sieve, a fermentation filtrate rich in hydrophilicgroups, spider webs, silk and cement are blended, and the dry-mixed mortar is obtained. By means of high adsorption and high air permeability of the functionalized molecular sieve, air permeability of the dry-mixed mortar prepared with the method is remarkably improved, pores of the physical network structure can be left in the mortar after spider silks and silkworm silks which exist in the mortar in a physical network structure are microbiologically degraded, and the pores just constitute air permeable channels of the mortar. Therefore, broad application prospect is achieved.

Description

technical field [0001] The invention discloses a method for preparing water-retaining and air-permeable dry-mixed mortar, which belongs to the technical field of mortar preparation. Background technique [0002] Dry-mixed mortar is usually called hydraulic cement mixed mortar, which refers to the physical mixing of aggregates (such as quartz sand), inorganic cementitious materials (such as cement) and additives (such as polymers) that have been dried and screened in a certain proportion. It is a granular or powdery material that is transported to the construction site in bags or in bulk, and can be used directly after mixing with water. Also known as mortar dry powder, dry mix, dry mix powder, some construction adhesives also belong to this category. Dry powder mortar plays the role of bonding, padding, protection and decoration in thin layers in the construction industry, and is widely used in construction and decoration engineering. [0003] Dry-mixed mortar has grown fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/08
CPCC04B28/04C04B2111/00267C04B2201/50C04B14/28C04B24/14C04B14/041C04B24/00C04B38/08
Inventor 陈合华林茂兰陈可
Owner 陈合华
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