Preparation process of concrete admixture

Abstract

The invention discloses a preparation process of a concrete admixture. According to the technical scheme, the preparation method is characterized by comprising the following steps: S11, preparing raw materials: preparing the following components in parts by weight: 1-5 parts of a super plasticizer, 2-10 parts of a surfactant, 0.8-3 parts of ammonium salt, 2-8 parts of polymeric alkylol amine, 1-5 parts of allyl polyoxyethylene ether, 0.01-0.2 part of an initiator, 0.8-1 part of a retarder, 0.01-2 parts of a defoaming agent and 2-15 parts of sodium tetrapolypropylene benzene sulfonate; and S12, carrying out water bath reaction: sequentially putting polymeric alcohol amine, allyl polyoxyethylene ether, sodium tetrapolypropylene benzene sulfonate and ammonium salt into a water bath kettle, then raising the temperature of the water bath kettle to 60-85 DEG C, then adding an initiator, and carrying out heat preservation reaction for 3-6 hours to obtain a mixed solution. The effects of improving the contact property of the concrete and the spraying surface, eliminating the problem of serious rebound during concrete spraying, accelerating the coagulation and solidification of the sprayed concrete and improving the strength of the concrete are achieved.

Description

technical field

[0001] The invention belongs to the field of building materials, and in particular relates to a preparation process of a concrete admixture. Background technique

[0002] Concrete admixture is a chemical substance that is added in the process of mixing concrete, accounting for less than 5% of the cement mass, and can significantly improve the performance of concrete. Adding admixtures to concrete has the characteristics of less investment, quick results, and significant technical and economic benefits. . With the continuous advancement of science and technology, admixtures have been used more and more, and admixtures have become the fifth important component of concrete in addition to the four basic components.

[0003] It can be referred to the Chinese patent whose publication number is CN111871312A, which discloses a concrete admixture production process, which mainly includes the following processing steps: checking discharge, starting stirring, collectin...

Examples

Embodiment 1

[0033] A preparation process for concrete admixture, comprising the following steps:

[0034] S11. Prepare raw materials: Prepare the following components by weight: 5 parts of superplasticizer, 2 parts of surfactant, 3 parts of ammonium salt, 8 parts of polymerized alcohol amine, 4 parts of allyl polyoxyethylene ether, and 0.1 part of initiator , 0.8 parts of retarder, 0.8 parts of defoamer and 8 parts of sodium tetrapropylene benzene sulfonate;

[0035] S12. Water bath reaction: put polymerized alcohol amine, allyl polyoxyethylene ether, sodium tetrapropylene benzene sulfonate and ammonium salt into the water bath in sequence, then raise the temperature of the water bath to 85°C, and then add the trigger Insulation reaction of the agent for 6 hours to obtain a mixed solution;

[0036] S13. Mixing reaction: inject the mixed solution prepared in S12, superplasticizer, surfactant and retarder into the reactor in sequence, continue stirring for 10 minutes, add defoamer, and sti...

Embodiment 2

[0055] A preparation process for concrete admixture, comprising the following steps:

[0056] S11. Prepare raw materials: Prepare the following components by weight: 5 parts of superplasticizer, 10 parts of surfactant, 3 parts of ammonium salt, 8 parts of polymerized alcohol amine, 5 parts of allyl polyoxyethylene ether, and 0.2 part of initiator , 1 part of retarder, 2 parts of defoamer and 15 parts of sodium tetrapolypropylene benzene sulfonate;

[0057] S12. Water bath reaction: put polymerized alcohol amine, allyl polyoxyethylene ether, sodium tetrapropylene benzene sulfonate and ammonium salt into the water bath in sequence, then raise the temperature of the water bath to 85°C, and then add the trigger Insulation reaction of the agent for 3-6h to obtain a mixed solution;

[0058] S13. Mixing reaction: inject the mixed solution prepared in S12, superplasticizer, surfactant and retarder into the reactor in sequence, continue stirring for 10 minutes, then add defoamer, and ...

Embodiment 3

[0068] A preparation process for concrete admixture, comprising the following steps:

[0069] S11. Prepare raw materials: Prepare the following components by weight: 4 parts of superplasticizer, 6 parts of surfactant, 2 parts of ammonium salt, 4 parts of polymerized alcohol amine, 3 parts of allyl polyoxyethylene ether, and 0.2 part of initiator , 0.9 parts of retarder, 0.08 parts of defoamer and 2-15 parts of sodium tetrapropylene benzene sulfonate;

[0070] S12. Water bath reaction: put polymerized alcohol amine, allyl polyoxyethylene ether, sodium tetrapropylene benzene sulfonate and ammonium salt into the water bath in sequence, then raise the temperature of the water bath to 60°C, and then add the trigger Insulation reaction of the agent for 3 hours to obtain a mixed solution;

[0071] S13. Mixing reaction: inject the mixed solution prepared in S12, superplasticizer, surfactant and retarder into the reactor in sequence, continue stirring for 10 minutes, then add defoamer...

technical field

[0001] The invention belongs to the field of building materials, and in particular relates to a preparation process of a concrete admixture. Background technique

[0002] Concrete admixture is a chemical substance that is added in the process of mixing concrete, accounting for less than 5% of the cement mass, and can significantly improve the performance of concrete. Adding admixtures to concrete has the characteristics of less investment, quick results, and significant technical and economic benefits. . With the continuous advancement of science and technology, admixtures have been used more and more, and admixtures have become the fifth important component of concrete in addition to the four basic components.

[0003] It can be referred to the Chinese patent whose publication number is CN111871312A, which discloses a concrete admixture production process, which mainly includes the following processing steps: checking discharge, starting stirring, collectin...

Examples

Embodiment 1

[0033] A preparation process for concrete admixture, comprising the following steps:

[0034] S11. Prepare raw materials: Prepare the following components by weight: 5 parts of superplasticizer, 2 parts of surfactant, 3 parts of ammonium salt, 8 parts of polymerized alcohol amine, 4 parts of allyl polyoxyethylene ether, and 0.1 part of initiator , 0.8 parts of retarder, 0.8 parts of defoamer and 8 parts of sodium tetrapropylene benzene sulfonate;

[0035] S12. Water bath reaction: put polymerized alcohol amine, allyl polyoxyethylene ether, sodium tetrapropylene benzene sulfonate and ammonium salt into the water bath in sequence, then raise the temperature of the water bath to 85°C, and then add the trigger Insulation reaction of the agent for 6 hours to obtain a mixed solution;

[0036] S13. Mixing reaction: inject the mixed solution prepared in S12, superplasticizer, surfactant and retarder into the reactor in sequence, continue stirring for 10 minutes, add defoamer, and sti...

Embodiment 2

[0055] A preparation process for concrete admixture, comprising the following steps:

[0056] S11. Prepare raw materials: Prepare the following components by weight: 5 parts of superplasticizer, 10 parts of surfactant, 3 parts of ammonium salt, 8 parts of polymerized alcohol amine, 5 parts of allyl polyoxyethylene ether, and 0.2 part of initiator , 1 part of retarder, 2 parts of defoamer and 15 parts of sodium tetrapolypropylene benzene sulfonate;

[0057] S12. Water bath reaction: put polymerized alcohol amine, allyl polyoxyethylene ether, sodium tetrapropylene benzene sulfonate and ammonium salt into the water bath in sequence, then raise the temperature of the water bath to 85°C, and then add the trigger Insulation reaction of the agent for 3-6h to obtain a mixed solution;

[0058] S13. Mixing reaction: inject the mixed solution prepared in S12, superplasticizer, surfactant and retarder into the reactor in sequence, continue stirring for 10 minutes, then add defoamer, and ...

Embodiment 3

[0068] A preparation process for concrete admixture, comprising the following steps:

[0069] S11. Prepare raw materials: Prepare the following components by weight: 4 parts of superplasticizer, 6 parts of surfactant, 2 parts of ammonium salt, 4 parts of polymerized alcohol amine, 3 parts of allyl polyoxyethylene ether, and 0.2 part of initiator , 0.9 parts of retarder, 0.08 parts of defoamer and 2-15 parts of sodium tetrapropylene benzene sulfonate;

[0070] S12. Water bath reaction: put polymerized alcohol amine, allyl polyoxyethylene ether, sodium tetrapropylene benzene sulfonate and ammonium salt into the water bath in sequence, then raise the temperature of the water bath to 60°C, and then add the trigger Insulation reaction of the agent for 3 hours to obtain a mixed solution;

[0071] S13. Mixing reaction: inject the mixed solution prepared in S12, superplasticizer, surfactant and retarder into the reactor in sequence, continue stirring for 10 minutes, then add defoamer...

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