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Composite material based on high-strength lime/dextrin mortar and its preparation method

A composite material and high-strength technology, applied in the field of building materials, can solve the problems of low strength of lime-based inorganic/organic materials, and achieve the effects of easy implementation, accelerated condensation, and improved waterproof performance

Active Publication Date: 2021-11-02
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite material based on high-strength lime / dextrin mortar, which solves the problem of low strength of lime-based inorganic / organic materials in the prior art

Method used

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  • Composite material based on high-strength lime/dextrin mortar and its preparation method
  • Composite material based on high-strength lime/dextrin mortar and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a method for preparing a composite material based on high-strength lime / dextrin mortar, specifically implemented according to the following steps:

[0040] Step 1. Preparation of dextrin slurry: Pour dextrin and water into the container at a ratio of 1:11.5, heat and stir until the temperature rises to 80°C, stop heating, and prepare a dextrin slurry with a mass concentration of 8%. ;

[0041] Step 2, take the following raw materials respectively by mass fraction:

[0042] Lime 21.4%, sand 64%, dextrin slurry 14%, sodium bicarbonate 0.6%;

[0043] Step 3. Pour lime into the filling material, and stir evenly to obtain mixture A, then add curing agent to form mixture B;

[0044] Step 4. Add a silane coupling agent to the dextrin slurry, pour them into the mixture B together, and stir evenly to form a composite material based on high-strength lime / dextrin mortar.

Embodiment 2

[0046] This embodiment provides a kind of preparation method based on the composite material of high-strength lime / dextrin mortar, and this method is the same as embodiment 1, and difference is:

[0047] In step 1, the mass ratio of dextrin to water is 1:5.3, and the mass concentration of the prepared dextrin slurry is 16%;

[0048] The raw materials weighed are lime 21.4%, sand 62%, dextrin slurry 16%, sodium carbonate 0.6%.

Embodiment 3

[0050] This embodiment provides a kind of preparation method based on the composite material of high-strength lime / dextrin mortar, and this method is the same as embodiment 1, and difference is:

[0051] In step 1, the mass ratio of dextrin to water is 1:7.3, and the mass concentration of the prepared dextrin slurry is 12%;

[0052] The raw materials weighed are 12% of lime, 80% of sand, 7.6% of dextrin slurry and 0.4% of sodium silicate.

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Abstract

The invention discloses a composite material based on high-strength lime / dextrin mortar, which is composed of the following raw material components according to the mass fraction, lime 12%-22%, filler 64%-80%, dextrin slurry 7.6%-14%, The curing agent is 0.4%-1.0%; the invention also discloses the preparation method of the composite material. Firstly, the dextrin slurry is prepared; the following raw materials are respectively weighed according to the mass fraction: lime 12%-22%, filler 64%-80%, Dextrin slurry 7.6% ~ 14%, curing agent 0.4% ~ 1.0%; then, pour lime into the filler, and stir evenly to obtain mixture A, then add curing agent to form mixture B; add silane to the dextrin slurry coupling agent, and pour into mixture B together, and stir evenly to form a composite material based on high-strength dextrin mortar. The preparation method of the invention is simple and easy to implement; the prepared composite material not only has high strength, but also has good water immersion resistance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a composite material based on high-strength lime / dextrin mortar, and also relates to a preparation method of the composite material. Background technique [0002] Natural disasters such as landslides and mudslides occur frequently in villages and towns in my country, and the key to disaster prevention and treatment in villages and towns lies in reinforcement materials. [0003] Lime is a traditional cementitious material in my country. It can be mixed with lime, loess, sand and glutinous rice juice to form a traditional glutinous rice mortar. At present, studies have found that the glutinous rice in the traditional glutinous rice mortar has the characteristics of an organic template in biomineralization, which can change the microstructure of calcium carbonate crystals when the lime slurry is solidified, so that there is an inorganic / organic mutual filling between the gl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/12C04B111/27
Inventor 王赟
Owner SHAANXI SCI TECH UNIV
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