Cement concrete air entraining agent and method for preparing same

A cement concrete and air-entraining agent technology, which is applied in the field of building materials, can solve problems affecting product quality, poor solubility, poor storage stability, etc., and achieve the effects of good bubble stability, stable reaction process, and stable performance

Active Publication Date: 2008-12-31
BEIJING ZHONGYANYI ENG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the scarcity of natural oxidized rosin, the rosin soap air-entraining agents currently produced are all made of primary, secondary or tertiary rosin, which are obtained by thermal polymerization with sulfuric acid, phenol, carbolic acid, etc., and the storage stability of liquid products is poor,

Method used

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  • Cement concrete air entraining agent and method for preparing same
  • Cement concrete air entraining agent and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Get 10 kilograms of rosin powder, 10 kilograms of sodium hydroxide solution of 40% concentration, 15 kilograms of hydrogen peroxide of 30% concentration, 10 kilograms of potassium permanganate solution of 10% concentration, 5 kilograms of sulfuric acid solution of 20% concentration, 80 kilograms of tap water.

[0014] First put sodium hydroxide, hydrogen peroxide, sulfuric acid, potassium permanganate solution and water into the reaction kettle, heat to 80°C, then slowly add rosin powder, stir while adding, and then stir for 30 minutes after adding rosin powder to obtain a solution The product is the air-entraining agent prepared in this example.

[0015] Detection of foam stabilization effect of air-entraining agent

[0016] Test with concrete:

[0017] Raw materials: cement: PO42.5MPa; sand: medium sand; gravel: continuous gradation, maximum particle size 25mm; water reducer: naphthalene series high-efficiency water reducer; fly ash: class II; finely ground slag powd...

Embodiment 2～ Embodiment 5

[0024] According to the processing and detection method of embodiment 1, air-entraining agent is prepared and detected by raw material ratio and conditions shown in table 2:

[0025] Table 2 Embodiment 2~5 air-entraining agent ingredients, preparation and detection

[0026]

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PUM

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Abstract

The invention discloses a cement concrete air-entraining agent, which is made from commercial primary, secondary or three-level ordinary rosin powder, commercial industrial-level sodium hydroxide, potassium permanganate, hydrogen peroxide, sulfuric acid and tap water through heated-stirring reaction at 60-90 DEG C; wherein, the weight proportions of the raw materials are as follows: 5-30 weight portions of rosin, 1-20 weight portions of sodium hydroxide solution, 0-20 weight portions of potassium permanganate solution, 0-20 weight portions of hydrogen peroxide solution, 0-20 weight portions of sulfuric acid solution, and 60-90 weight portions of tap water solution. The air-entraining agent disclosed in the invention can be stably preserved for a long time without rosin precipitation; the bubbles caused by the air-entraining agent are exquisite and have good stability, which can be used in cement mortar or concrete and other building materials.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to cement mortar, concrete air-entraining agent and production technology thereof. Background technique [0002] In the field of building materials, air-entraining agents need to be added during the mixing process of cement mortar and concrete. Rosin soap is the most commonly used cement mortar and concrete air-entraining agent at home and abroad. It has a long application history and stable performance. The concrete mixed with it has excellent durability. [0003] Excellent rosin soap is made of natural oxidized rosin, which is directly saponified with sodium hydroxide solution when heated to 70°C to 80°C. Due to the scarcity of natural oxidized rosin, the rosin soap air-entraining agents currently produced are all made of primary, secondary or tertiary rosin, which are obtained by thermal polymerization with sulfuric acid, phenol, carbolic acid, etc., and the storage...

Claims

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Application Information

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IPC IPC(8): C04B24/34C04B22/06C04B103/30
Inventor 赵顺增刘立姚燕吴勇曹淑萍杨伊静武旭南
Owner BEIJING ZHONGYANYI ENG TECH DEV CENT
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