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Concrete retarding and water reducing agent

A technology of retarding water-reducing agent and concrete, which is applied in the field of concrete retarding water-reducing agent, which can solve the problem that the effect of retarding water-reducing agent is difficult to be fully utilized and continuously exerted, and the effect of using cement is greatly affected, hindering retarding water-reducing To solve problems such as agent development, achieve strong water-reducing effect, enhance continuous effect, and good compatibility

Active Publication Date: 2021-06-04
龙南恒沣建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the retarding superplasticizers on the market are simply compounded, and their use effect is greatly affected by cement. Therefore, the effect of retarding superplasticizers is difficult to be fully utilized and continuously exerted, which hinders the development of retarding superplasticizers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This example provides a concrete retarding water reducer, including A component and B component, the A component includes 10 parts of polycarboxylic acid type water reducer powder, 3 parts of calcium sugar, 1 part of sodium tripolyphosphate 1 part, 1 part of borax, and 6 parts of ceramsite. The B component is formed by reacting glucose, vinyl alcohol, and sodium methacrylate.

[0035] The mass ratio of the A component and the B component is 1:2, and the mass ratio of glucose, vinyl alcohol and sodium methacrylate is 1:1.1:0.95.

[0036] The preparation method of the A component comprises the following steps:

[0037] S1. Clean the ceramsite ultrasonically for 10 minutes, then dry it in a vacuum drying oven at 70°C for 30 minutes, then divide it into the first ceramsite and the second ceramsite, and store it in vacuum for later use;

[0038] S2. Mix the first ceramsite with sodium tripolyphosphate and borax evenly, and disperse in a high-speed disperser at 1000r / min for...

Embodiment 2

[0053] This example provides a concrete retarding water reducer, including A component and B component, the A component includes 15 parts of polycarboxylic acid type water reducer powder, 4 parts of sugar calcium, 1.5 parts of sodium tripolyphosphate 1.5 parts, 1.5 parts of borax, and 7 parts of ceramsite. The B component is formed by reacting glucose, vinyl alcohol, and sodium methacrylate.

[0054] The mass ratio of the A component and the B component is 1:2.5, and the mass ratio of the glucose, vinyl alcohol and sodium methacrylate is 1:1.15:0.97.

[0055] The preparation method of the A component comprises the following steps:

[0056] S1. Clean the ceramsite ultrasonically for 12 minutes, then dry it in a vacuum oven at 75°C for 35 minutes, then divide it into the first ceramsite and the second ceramsite, and store it in vacuum for later use;

[0057] S2. Mix the first ceramsite with sodium tripolyphosphate and borax evenly, and disperse in a high-speed disperser at 1100...

Embodiment 3

[0071] This example provides a concrete retarding water reducer, including A component and B component, the A component includes 20 parts of polycarboxylic acid type water reducer powder, 5 parts of sugar calcium, 2 parts of sodium tripolyphosphate 2 parts, 2 parts of borax, and 8 parts of ceramsite. The B component is formed by reacting glucose, vinyl alcohol, and sodium methacrylate as raw materials.

[0072] The mass ratio of the A component and the B component is 1:3, and the mass ratio of glucose, vinyl alcohol, and sodium methacrylate is 1:1.2:1.

[0073] The preparation method of the A component comprises the following steps:

[0074] S1. Ultrasonic cleaning of ceramsite for 15 minutes, and then drying in a vacuum oven at 80°C for 40 minutes, and then divided into the first part of ceramsite and the second part of ceramsite, and stored in vacuum for later use;

[0075] S2. Mix the first ceramsite with sodium tripolyphosphate and borax evenly, and disperse in a high-spe...

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Abstract

The invention discloses a concrete retarding and water reducing agent which comprises a component A and a component B. The component A comprises 10-20 parts of polycarboxylic acid type water reducing agent powder, 3-5 parts of sugar calcium, 1-2 parts of sodium tripolyphosphate, 1-2 parts of borax and 6-8 parts of ceramsite, and the component B is formed by reacting glucose, vinyl alcohol and sodium methallyl sulfonate serving as raw materials. According to the retarding and water reducing agent provided by the invention, a method of combining the solid component and the liquid component is adopted, the liquid component B firstly plays a role, and then the solid component A continuously releases the effective components, so that the retarding and water reducing agent is fully and continuously utilized in concrete, the water reducing and retarding effects of the retarding and water reducing agent are enhanced, and the compressive strength of a concrete product is improved.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, and more specifically relates to a concrete retarding water reducer. Background technique [0002] Retarding superplasticizer is a kind of concrete admixture, which has both water reducing components and retarding components. The mechanism of action is as follows: after the retarding superplasticizer is mixed into the concrete, the cement particles are negatively charged due to the adsorption of the anions of the superplasticizer, which makes the water around the cement particles polar, and the same-sex ions repel each other, preventing the cement phase cations from forming. Close to each other, causing dispersion and separation effects, thereby improving the adsorption and diffusion of cement particles, inhibiting the agglomeration tendency of cement paste, increasing the joint area between cement particles and water, so that the cement can be fully hydrated. In the process of sprea...

Claims

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Application Information

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IPC IPC(8): C04B24/16C08F216/06C08F228/02C04B103/22C04B103/30
CPCC04B40/0039C04B24/161C08F216/06C04B2103/22C04B2103/302C04B24/10C04B22/16C04B22/08C04B24/026C04B22/00C08F228/02
Inventor 邱文聪
Owner 龙南恒沣建材有限公司
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