Cement-based high-permeability crystalline masterbatch concrete and preparation method thereof

A high-permeability, cement-based technology, applied in the new production process of concrete, can solve the problems of inability to block capillary pores and poor permeability, achieve excellent secondary impermeability, strong permeability, and improve self-healing. effect of ability

Inactive Publication Date: 2017-05-31
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its weak penetrating ability, it cannot block capillary po

Method used

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  • Cement-based high-permeability crystalline masterbatch concrete and preparation method thereof
  • Cement-based high-permeability crystalline masterbatch concrete and preparation method thereof
  • Cement-based high-permeability crystalline masterbatch concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] After fully mixing magnesium chloride powder and calcium chloride powder according to the mass ratio of 1:2, add water until the powder is completely dissolved, then add 2.2kg of ammonia water for each liter of mixed solution, stir thoroughly, filter and collect the precipitate, wash with distilled water, dry, and dry at 700 Calcined at ℃ for 4 hours to obtain high-activity nano-magnesia-calcium oxide composite powder; raise the temperature of 120g / L tetrasodium iminodisuccinate solution to 33℃, and add 280g of high-activity nano-sized magnesia-calcium oxide composite powder per liter of solution Stir at a temperature of 90°C for 30 minutes, cool to room temperature, and then dry to obtain high-activity nano-scale magnesium oxide calcium oxide composite powder and tetrasodium iminodisuccinate; Powdered sodium silicate, high-activity nano-scale magnesium oxide calcium oxide composite powder and tetrasodium iminodisuccinate are mixed according to the mass ratio of 40:60:50...

Embodiment 2

[0017] After fully mixing magnesium chloride powder and calcium chloride powder according to the mass ratio of 1:2.5, add water until the powder is completely dissolved, then add 2.5kg of ammonia water for each liter of mixed solution, stir well, filter and collect the precipitate, wash and dry with distilled water, and then dry it at 700 Calcined at ℃ for 4 hours to obtain high-activity nano-magnesia-calcium oxide composite powder; raise the temperature of 120g / L tetrasodium iminodisuccinate solution to 35℃, and add 300g of high-activity nano-sized magnesia-calcium oxide composite powder per liter of solution Stir at a temperature of 90°C for 30 minutes, cool to room temperature, and then dry to obtain high-activity nano-scale magnesium oxide calcium oxide composite powder and tetrasodium iminodisuccinate; Powdered sodium silicate, high-activity nano-scale magnesium oxide calcium oxide composite powder and tetrasodium iminodisuccinate are mixed according to the mass ratio of 4...

Embodiment 3

[0019] After fully mixing the magnesium chloride powder and calcium chloride powder according to the mass ratio of 1:2, add water until the powder is completely dissolved, add 1.8kg of ammonia water per liter of the mixed solution, stir thoroughly, filter and collect the precipitate, wash with distilled water, dry, and then dry at 650 Calcined at ℃ for 2 hours to obtain high-activity nano-magnesia-calcium oxide composite powder; raise the temperature of 120g / L tetrasodium iminodisuccinate solution to 33℃, and add 200g of high-activity nano-sized magnesia-calcium oxide composite powder per liter of solution Stir at a temperature of 80°C for 30 minutes, cool to room temperature and dry to obtain a high-activity nano-scale magnesium oxide calcium oxide composite powder and tetrasodium iminodisuccinate; Powdered sodium silicate, high-activity nano-sized magnesium oxide calcium oxide composite powder and tetrasodium iminodisuccinate are mixed according to the mass ratio of 40:55:50,...

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Abstract

The invention relates to cement-based high-permeability crystalline masterbatch concrete. The concrete comprises, by weight, 8-12 parts of high-permeability crystalline masterbatch, 35-50 parts of 60-150 mesh graded silica sand, 0.5-2 parts of re-dispersible adhesive powder, 0.3-0.5 part of water reducing agents, 0.3-0.5 part of antifoaming agents, 0.2-0.4 part of cellulose ether, 40-60 parts of cement, and 80-120 parts of water. According to the cement-based high-permeability crystalline masterbatch concrete and a preparation method thereof, the high-permeability crystalline masterbatch is prepared from sodium silicate, high-activity nanoscale magnesium-oxide and calcium-oxide composite powder and tetrasodium iminodisuccinate chelate, and the concrete prepared on the basis of the high-permeability crystalline masterbatch has the advantages of being high in permeability and excellent in secondary impermeability; the high-activity magnesium oxide and calcium oxide are reacted with silicate to generate chemical crystal, the self-healing performance of the concrete is greatly improved, and the concrete is simple in preparation method and low in cost.

Description

technical field [0001] The invention relates to a new production process of concrete, in particular to a cement-based high-permeability crystalline masterbatch concrete and a preparation method thereof. Background technique [0002] Concrete is a widely used building material and plays a huge role in modern construction engineering. However, concrete is a heterogeneous, porous, highly permeable material with micro-crack structure and rough surface. There are many phenomena of penetration. Starting from the porous and cracked properties of concrete, it is imperative to develop a new type of waterproof material. At present, in the field of inorganic materials, more and more attention has been paid to high-permeability crystalline masterbatches. The application number is 201110196833.6, the name is a cement-based osmotic crystalline core masterbatch and its application, and a cement-based osmotic crystalline core masterbatch is disclosed. The weight ratio of each component is...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B28/00C04B111/27
CPCC04B28/00C04B40/0039C04B2111/27C04B22/08C04B22/064C04B22/066C04B24/125C04B24/26C04B14/06C04B24/383C04B2103/302C04B2103/48
Inventor 翟红侠廖绍锋侯克伟
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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