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A kind of reinforced concrete nano admixture, preparation method and application thereof

A concrete and admixture technology, applied in the field of preparation and reinforced concrete nano-admixture, can solve the problems of insufficient strength and high dosage of the admixture, and achieve the effects of excellent performance, excellent performance and controllable cost

Active Publication Date: 2021-07-30
四川琪汇新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a reinforced concrete nano admixture and a preparation method thereof, which are used to solve the technical problems existing in the prior art: the strength of the existing admixture is insufficient and the dosage is high

Method used

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  • A kind of reinforced concrete nano admixture, preparation method and application thereof
  • A kind of reinforced concrete nano admixture, preparation method and application thereof
  • A kind of reinforced concrete nano admixture, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A reinforced concrete nano admixture, comprising the following components, calculated in parts by weight:

[0047] 80 parts of nano-scale silicon dioxide, 0.1 part of synthetic polymer viscosifying material, 1.5 parts of sodium thiocyanate, 1 part of powder polycarboxylate high-performance water reducer, 0.5 part of carbonamide, 0.1 part of sodium nitrite, nitric acid 0.5 part of sodium, 1 part of potassium aluminum sulfate dodecahydrate, 0.1 part of powder defoamer.

[0048] Preparation method of reinforced concrete nano admixture

[0049] S1: Put nano-scale silica, synthetic polymer viscosifying material and powder polycarboxylate high-performance water reducer into the mixing tank 110, and carry out the first mixing under the forward rotation of the driving motor 130. Stir and mix, the stirring reaction time is 10 minutes, the stirring speed is 100 r / min, and the first mixed powder is obtained.

[0050] S2: After step S1 reacts to obtain the first mixed powder, put...

Embodiment 2

[0054] A reinforced concrete nano admixture, 89 parts of nano-scale silicon dioxide, 0.2 parts of synthetic polymer viscosifying material, 1.0 part of sodium thiocyanate, 2 parts of powder polycarboxylate high-performance water reducer, 1.2 parts of carbonamide 0.5 parts of sodium nitrite, 1.2 parts of sodium nitrate, 2 parts of potassium aluminum sulfate dodecahydrate, and 0.1 part of powder defoamer.

[0055] Preparation method of reinforced concrete nano admixture

[0056] S1: Put nano-scale silica, synthetic polymer viscosifying material and powder polycarboxylate high-performance water reducer into the mixing tank 110, and carry out the first mixing under the forward rotation of the driving motor 130. Stir and mix, the stirring reaction time is 12 minutes, the stirring speed is 120 r / min, and the first mixed powder is obtained.

[0057] S2: After step S1 reacts to obtain the first mixed powder, put the potassium aluminum sulfate dodecahydrate and powder defoamer into the...

Embodiment 3

[0061] A reinforced concrete nano admixture, 88.5 parts of nano-scale silicon dioxide, 0.3 parts of synthetic polymer viscosifying material, 1.2 parts of sodium thiocyanate, 4 parts of powder polycarboxylate high-performance water reducer, 1 carbonamide 0.8 parts of sodium nitrite, 1 part of sodium nitrate, 3 parts of potassium aluminum sulfate dodecahydrate, and 0.2 parts of powder defoamer.

[0062] Preparation method of reinforced concrete nano admixture

[0063] S1: Put nano-scale silica, synthetic polymer viscosifying material and powder polycarboxylate high-performance water reducer into the mixing tank 110, and carry out the first mixing under the forward rotation of the drive motor 130. Stir and mix, the stirring reaction time is 15 minutes, the stirring speed is 150 r / min, and the first mixed powder is obtained.

[0064] S2: After step S1 reacts to obtain the first mixed powder, put the potassium aluminum sulfate dodecahydrate and powder defoamer into the first stora...

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Abstract

The invention discloses a reinforced concrete nano admixture: it comprises the following components, 80-90 parts of nano-scale silicon dioxide, 0.1-0.5 parts of synthetic polymer viscosifying material, 0.8-1.5 parts of sodium thiocyanate, powder 1-6 parts of high-performance polycarboxylate superplasticizer, 0.5-1.5 parts of carbonamide, 0.1-1.2 parts of sodium nitrite, 0.5-1.5 parts of sodium nitrate, 1-5 parts of potassium aluminum sulfate dodecahydrate, powder 0.1 to 0.5 parts of foaming agent. The method for preparing the reinforced concrete nano admixture as claimed in claim 1, comprising the following steps: putting nano-scale silicon dioxide, synthetic polymer viscosifying material and powder polycarboxylate high-performance water reducer into the stirring device Stir and mix for the first time to obtain the first mixed powder; add potassium aluminum sulfate dodecahydrate and powder defoamer to the first mixed powder, and stir and react through the stirring device to obtain the second mixed powder; Add carbonamide, sodium thiocyanate, sodium nitrite and barium nitrate to the mixed powder, and stir and react through a stirring device to obtain a reinforced concrete nano admixture.

Description

technical field [0001] The invention relates to the technical field of building materials, specifically, a reinforced concrete nano admixture, a preparation method and an application thereof. Background technique [0002] Concrete admixture, a small amount mixed into concrete, can greatly reduce the springback of shotcrete, which can usually be controlled within 10%, which greatly saves construction costs and speeds up tunnel construction progress, and at the same time greatly improves the concrete age. The strength, reduce construction safety hazards. [0003] Concrete admixtures can reduce or cancel the addition of water reducers, preservatives, and airtight agents under the original ratio, which greatly saves the construction cost of the project department. schedule. [0004] There are many existing admixture products, but their properties vary greatly. Different environments require the use of admixtures with different properties, and the existing admixtures are not st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12
CPCC04B40/0039C04B14/062C04B2103/44C04B22/14C04B2103/302C04B24/124C04B22/085C04B22/148C04B2103/50
Inventor 任豪
Owner 四川琪汇新材料有限责任公司
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