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Preparation method of modified calcium carbonate-based permeable terrazzo

A calcium carbonate and terrazzo technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of reduced water permeability of terrazzo, shortened service life, easy to produce water, etc., to achieve strength improvement, alleviation of aging and degradation, excellent water permeability performance effect

Inactive Publication Date: 2020-04-10
安徽力峰建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of polymer binders will greatly reduce the water permeability of the prepared terrazzo, which is prone to water accumulation, and long-term immersion in water accumulation will cause erosion effects and reduce the service life

Method used

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  • Preparation method of modified calcium carbonate-based permeable terrazzo
  • Preparation method of modified calcium carbonate-based permeable terrazzo

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing modified calcium carbonate-based permeable terrazzo, comprising the following steps:

[0020] (1) Preparation of modified calcium carbonate: uniformly mix deionized water and calcium hydroxide powder to prepare calcium hydroxide solution, 500W, 35kHz ultrasonic treatment for 3min, add 1.8% carbon nanotubes to the calcium hydroxide solution , stirred at a speed of 500r / min for 15min, then stirred at a speed of 120r / min at 30°C, and added aspartic acid at the same time, the ratio of aspartic acid to calcium hydroxide was 2:1, and then continued to stir for 1 hour, then adjust the pH of the solution to 11.0, then pass into the solution carbon dioxide and helium, keep stirring, when the pH of the solution is reduced to 9.0, stop the reaction, filter the precipitate, wash with water, and dry to constant weight, to obtain, Modified calcium carbonate particle size is 0.1mm;

[0021] (2) Coarse sand pretreatment: The fine sand is stirred and soaked in so...

Embodiment 2

[0031] A method for preparing modified calcium carbonate-based permeable terrazzo, comprising the following steps:

[0032] (1) Preparation of modified calcium carbonate: uniformly mix deionized water and calcium hydroxide powder to prepare calcium hydroxide solution, 500W, 35kHz ultrasonic treatment for 5min, add 2.5% carbon nanotubes to the calcium hydroxide solution , stirred at a speed of 500r / min for 15min, then stirred at a speed of 120r / min at 30°C, and added aspartic acid at the same time, the ratio of aspartic acid to calcium hydroxide was 2:1, and then continued to stir for 1 hour, then adjust the pH of the solution to 11.0, then pass into the solution carbon dioxide and helium, keep stirring, when the pH of the solution is reduced to 9.0, stop the reaction, filter the precipitate, wash with water, and dry to constant weight, to obtain, Modified calcium carbonate particle size is 0.2mm;

[0033] (2) Coarse sand pretreatment: The fine sand is stirred and soaked in so...

Embodiment 3

[0043] A method for preparing modified calcium carbonate-based permeable terrazzo, comprising the following steps:

[0044] (1) Preparation of modified calcium carbonate: uniformly mix deionized water and calcium hydroxide powder to prepare calcium hydroxide solution, 500W, 35kHz ultrasonic treatment for 4min, add 2.1% carbon nanotubes to the calcium hydroxide solution , stirred at a speed of 500r / min for 15min, then stirred at a speed of 120r / min at 30°C, and added aspartic acid at the same time, the ratio of aspartic acid to calcium hydroxide was 2:1, and then continued to stir for 1 hour, then adjust the pH of the solution to 11.0, then pass into the solution carbon dioxide and helium, keep stirring, when the pH of the solution is reduced to 9.0, stop the reaction, filter the precipitate, wash with water, and dry to constant weight, to obtain, Modified calcium carbonate particle size is 0.15mm;

[0045] (2) Coarse sand pretreatment: The fine sand is stirred and soaked in s...

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Abstract

The invention discloses a preparation method of modified calcium carbonate-based permeable terrazzo, and relates to the technical field of building materials, and the method comprises the following steps: (1) preparing modified calcium carbonate; (2) preprocessing coarse sand; (3) preprocessing fine sand; and (4) mixing the raw materials. The modified calcium carbonate-based permeable terrazzo prepared by the invention not only has excellent water permeability, but also has good compressive strength.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of modified calcium carbonate-based permeable terrazzo. Background technique [0002] Permeable concrete is an eco-friendly concrete with continuous pores made by a special process. It has both certain strength and certain air and water permeability. The pavement paved with permeable concrete has good drainage and noise reduction capabilities, and has ecological functions such as regulating surface temperature and humidity. Therefore, permeable concrete has been widely used in roads, municipal and garden projects at home and abroad, and has played an important role in the construction of sponge cities. It has achieved good social and economic benefits and environmental and ecological benefits. [0003] The existing "Application No. 2016103523414 A Sandstone Terrazzo" is prepared from the following raw materials in the weight ratio: 300 part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/02C04B38/00
CPCC04B20/023C04B28/00C04B38/0041C04B2111/00284C04B2201/50C04B14/28C04B14/06C04B14/22C04B22/002C04B2103/302C04B38/0074
Inventor 钱学锋
Owner 安徽力峰建材科技有限公司