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Clay screening agent and preparation method thereof

A technology of shielding agent and clay, which is applied in the field of clay shielding agent and its preparation, can solve the problems of complex preparation conditions, etc., achieve the effects of wide sources, improved effect, and simple preparation method

Inactive Publication Date: 2013-10-09
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This additive can better inhibit the influence of aggregate mud on polycarboxylate superplasticizer, but it needs polymerization reaction and the preparation conditions are more complicated

Method used

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  • Clay screening agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1.1 The composition of the clay shielding agent is (g):

[0041] Sodium silicate 25

[0042] Sodium methyl silicate 25

[0043] Phosphate 0

[0044] Sodium Gluconate 1

[0045] Sodium Lauryl Sulfate 1

[0046] water 48

[0047] 1.2 Preparation method

[0048] (1) First, weigh the raw materials according to the weight ratio;

[0049] (2) The raw materials are then mixed and stirred at a temperature of 20° C., a stirring speed of 50 r / min, and a stirring time of 30 minutes to obtain a clay shielding agent.

Embodiment 2

[0051] 2.1 The composition of the clay shielding agent is (g):

[0052] Silicate 0

[0053] Disodium hydrogen phosphate 25

[0054] Sodium metaphosphate 25

[0055] Sodium Gluconate 5

[0056] Sodium Lauryl Sulfate 5

[0057] water 40

[0058] 2.2 Preparation method

[0059] (1) First, weigh the raw materials according to the weight ratio;

[0060] (2) The raw materials are then mixed and stirred at a temperature of 50° C., a stirring speed of 500 r / min, and a stirring time of 10 minutes to obtain the clay shielding agent.

Embodiment 3

[0062] 3.1 The composition of the clay shielding agent is (g):

[0063] Sodium silicate 10

[0064] Sodium methyl silicate 30

[0065] Disodium hydrogen phosphate 10

[0066] Sodium metaphosphate 10

[0067] Sodium Gluconate 5

[0068] Sodium Lauryl Sulfate 1

[0069] water 34

[0070] 3.2 Preparation method

[0071] (1) First, weigh the raw materials according to the weight ratio;

[0072] (2) Then the raw materials are mixed and stirred, the stirring temperature is 30°C, the stirring speed is 100r / min, and the stirring time is 15min, and the clay shielding agent can be obtained.

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Abstract

The invention discloses a clay screening agent. The clay screening agent comprises the following materials in percentage by weight: 0-50% of silicate, 0-50% of phosphate, 1%-5% of sodium gluconate, 1%-5% of lauryl sodium sulfate and 10%-50% of water. The preparation method of the clay screening agent disclosed by the invention comprises the following steps of: (1), firstly, weighing the materials in the percentage by weight; and (2), then, mixing and stirring the materials to obtain the clay screening agent, wherein the stirring temperature is 20 DEG C-50 DEG C, the stirring speed is 50 revolutions / minute-500 revolutions / minute, and the stirring time is 10 minutes-30 minutes. The clay screening agent disclosed by the invention can be used for preferably adsorbing the clay in a concrete gravel material, so that the bad influences of the clay are screened, and therefore, the acting effect of a polycarboxylic acid water reducing agent is improved. The clay screening agent is wide in material resource, not needed to be synthesized by chemical reaction, simple in preparation method, remarkable in acting effect and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a clay shielding agent and a preparation method thereof. Background technique [0002] The volume of aggregate in concrete accounts for about 70% of the concrete volume, and the quality of aggregate has a very important impact on the performance of concrete. The particle size of clay particles is less than 5??m, and the particle size of silt and dust particles is 5~50??m. These extremely fine particle materials form a coating layer on the surface of the aggregate, which hinders the bonding of the aggregate and the cement stone, forming a weak The interface layer, which may appear as loose particle aggregates, especially mud blocks, forms a weak "air space" in the concrete, reducing the compactness of the concrete. [0003] In the concrete production process, the clay contained in the aggregate is inevitably mixed into the cementitious material system. With the increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/40
Inventor 智艳飞霍亮张涛李国友蔺喜强
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION