Reinforced cement retarder and preparation method thereof

A cement retarder and reinforced technology, applied in the field of reinforced cement retarder and its preparation, can solve the problems of reduced cement strength, unguaranteed engineering quality, etc., so as to reduce production costs, overcome limitations and deficiencies, Good retardation effect

Inactive Publication Date: 2019-09-10
NANJING YONGNENG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Improper use will reduce the strength of cement, and the quality of the project cannot be guaranteed

Method used

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  • Reinforced cement retarder and preparation method thereof
  • Reinforced cement retarder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of enhanced cement retarder, its raw material composition is: Tetrahydroxyethylethylenediamine 3%, dispersant 0.1%, sodium tripolyphosphate 1%, molasses 30%, sodium gluconate 5%, sodium hexametaphosphate 3%, tetrahydroxypropyl ethylenediamine 1%, the balance is water, and the total amount is 100%; said percentages are all mass percentages.

[0022] The percentages are all mass percentages. According to the formula ratio, dissolve tetrahydroxyethylethylenediamine, dispersant, sodium tripolyphosphate, molasses, sodium gluconate, sodium hexametaphosphate, and tetrahydroxypropylethylenediamine in water , and mix evenly to obtain product 1.

Embodiment 2

[0024] A kind of enhanced cement retarder, its raw material composition is: Tetrahydroxyethylethylenediamine 6%, dispersant 0.3%, sodium tripolyphosphate 3%, molasses 40%, sodium gluconate 10%, sodium hexametaphosphate 5%, tetrahydroxypropyl ethylenediamine 3%, the balance is water, and the total amount is 100%; said percentages are all mass percentages.

[0025] The percentages are all mass percentages. According to the formula ratio, dissolve tetrahydroxyethylethylenediamine, dispersant, sodium tripolyphosphate, molasses, sodium gluconate, sodium hexametaphosphate, and tetrahydroxypropylethylenediamine in water , and mix evenly to obtain product 2.

Embodiment 3

[0027] A kind of enhanced cement retarder, its raw material is composed of: Tetrahydroxyethylethylenediamine 4%, dispersant 0.2%, sodium tripolyphosphate 2%, molasses 35%, sodium gluconate 8%, sodium hexametaphosphate 4%, tetrahydroxypropyl ethylenediamine 2%, the balance is water, and the total amount is 100%; said percentages are all mass percentages.

[0028] The percentages are all mass percentages. According to the formula ratio, dissolve tetrahydroxyethylethylenediamine, dispersant, sodium tripolyphosphate, molasses, sodium gluconate, sodium hexametaphosphate, and tetrahydroxypropylethylenediamine in water , and mix evenly to obtain product 3.

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Abstract

The invention discloses a reinforced cement retarder and a preparation method thereof. The reinforced cement retarder is prepared from the following raw materials in percentage by mass: 3-6% of tetrahydroxyethyl ethylene diamine, 0.1-0.3% of a dispersing agent, 1-3% of sodium tripolyphosphate, 30-40% of molasses, 5-10% of sodium gluconate, 3-5% of sodium hexametaphosphate, 1-3% of tetrahydroxypropyl ethylenediamine and the balance of water. Applicability problems of cement retarders and concrete water-reducing agents can be obviously solved by adding sodium dodecyl benzene sulfonate, the reinforced cement retarder is excellent in chemical stability and free of any halide ion which corrodes equipment, and cement setting is delayed to control retarding time. Furthermore, early strength and long-term strength of cement can be enhanced, and the cement amount can be saved in a construction process so as to indirectly save energy and cost.

Description

technical field [0001] The invention belongs to the technical field of cement production, and in particular relates to an enhanced cement retarder and a preparation method thereof. Background technique [0002] The admixture added to cement or concrete to delay the reaction rate between cement and water without damaging human health and the performance of cement concrete is called retarder, which is divided into powder and liquid. It is a chemical additive that prolongs the hydration induction period of cement paste and slows down the hydration rate of cement. It is added to the cement concrete material in an appropriate amount, and through its physical and chemical effects on the particle surface, it can make concrete and mortar It maintains a plastic state for a long time, which is convenient for transportation and construction. The application of retarders in cement production and concrete construction sites can facilitate the pouring of cement concrete, ensure construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B103/22
CPCC04B40/0039C04B2103/22C04B24/122C04B2103/408C04B22/16C04B24/10
Inventor 谢昊李晓静刘国华
Owner NANJING YONGNENG MATERIALS
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