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Concrete performance improver and preparation method thereof

A technology of improver and concrete, which is applied in the preparation of the aforementioned concrete performance improver and the field of concrete performance improver, which can solve the problems of high raw material cost and high raw material price, and achieve the effect of simple operation, low cost and reduced raw material cost

Pending Publication Date: 2022-07-29
刘江平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned concrete cementitious material conditioner disperses the concrete through the electrostatic repulsion brought by the adsorption of small monomers of olamine cations on the surface of negatively charged cement gelatinous material particles and the steric hindrance effect produced by hydroxypropyl methylcellulose. Flocculation structure, however, due to the high raw material price of the concrete cementitious material regulator, and the solid content is as high as 63% to 78%, the raw material cost of the concrete cementitious material regulator is relatively high

Method used

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  • Concrete performance improver and preparation method thereof

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preparation example Construction

[0024] The preparation method of the concrete performance improving agent in the present embodiment comprises the following steps in turn:

[0025] Step 1. Weigh each component according to weight ratio;

[0026] Step 2, take 55%~65% of the total amount of deionized water and place it in a container;

[0027] Step 3, add cellulose and sodium sulfite to the container, stir until completely dissolved;

[0028] Step 4, adding mixed alcohol solution, diethylene monoalcohol isopropanolamine, triethanolamine, modified wood calcium, and stirring until completely dissolved;

[0029] Step 5. Add defoamer and preservative to the container and stir evenly;

[0030] Step 6, adding the remaining ionized water into the container, that is, the concrete performance improving agent is prepared.

Embodiment 1

[0032] The concrete performance improving agent in this embodiment, calculated in 1000 parts, includes the following components by weight: 80 parts of mixed alcohol solution with a volume concentration of 80%, 10 parts of triethanolamine, and 10 parts of diethanol monoisopropanolamine , 10 parts of sodium sulfite, 1 part of cellulose, 1 part of modified wood calcium, 0.1 part of defoamer, 0.5 part of preservative and 887.4 parts of deionized water. The components of the mixed alcohol solution are: 52% glycerol, 16% diglycerol, 4% triacetylglycerol, 5% triglycerol and 20% water, and the rest are inevitable impurities.

[0033] Sample Preparation

[0034] Each concrete sample was prepared according to Table 1 below. The specific components of the admixture are: slump-preserving polycarboxylic acid: water-reducing polycarboxylic acid: glucose sodium polycarboxylate = 42:50:8, and the specific components of the improver refer to Example 1. The unit of each component is kg.

[0...

Embodiment 2

[0043] The concrete performance improving agent in this embodiment, in 1000 parts, includes the following components by weight: 70 parts of mixed alcohol solution with a volume concentration of 85%, 5 parts of triethanolamine, and 5 parts of diethanol monoisopropanolamine , 5 parts of sodium sulfite, 5 parts of cellulose, 0.5 parts of modified wood calcium, 0.2 parts of defoamer, 0.3 parts of preservatives and 909 parts of deionized water. The components of the mixed alcohol solution are: 58% glycerol, 13% diglycerol, 6% triacetylglycerol, 3% triglycerol and 15% water, and the rest are inevitable impurities. The concrete performance improver in this example can significantly improve the slump, expansion, strength and workability of concrete when the amount of cement is reduced.

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Abstract

The invention relates to a concrete performance improver, which is characterized by comprising the following components in parts by weight on the basis of 1000 parts: 70-90 parts of a mixed alcohol solution with the volume concentration of 80%-90%, 5-10 parts of triethanolamine, 5-10 parts of diethanolisopropanolamine, 5-10 parts of sodium sulfite, 1-5 parts of cellulose, 0.5-1 part of modified calcium lignosulphonate and 880-930 parts of deionized water, so that the raw material cost of the concrete performance improver is lower. The invention also relates to a preparation method of the concrete performance improver.

Description

technical field [0001] The present invention relates to concrete adjuvants, in particular to a concrete performance improver, and also to a preparation method of the aforementioned concrete performance improver. Background technique [0002] Concrete admixtures are materials that are added during concrete mixing and can improve concrete performance as required. Concrete admixtures have the characteristics of small dosage and large effect. As a typical concrete admixture, water reducer can reduce the amount of mixing water, improve the strength of concrete, or save the amount of cement under the condition of constant workability and cement dosage. The existing water reducing agents are basically based on polycarboxylate high performance water reducing agents, and some naphthalene series and aliphatic water reducing agents are used. Naphthalene-based and aliphatic water-reducing agents are very difficult to formulate high-strength concrete due to their relatively small water...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B24/02
CPCC04B40/0039C04B24/026C04B24/122C04B22/147C04B24/383C04B24/18Y02W30/91
Inventor 刘江平刘楚雯
Owner 刘江平
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