Mortar and concrete shrinkage reducing agent having antirust function, and preparation method thereof

A concrete shrinkage reducing agent and anti-rust technology, which is applied in the field of concrete admixtures, can solve problems such as gaps, achieve good results, reduce the risk of shrinkage cracking, and reduce the effect of surface tension

Active Publication Date: 2014-05-28
JIANGSU NIGAO SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In recent years, polymer rust inhibitors and composite rust inhibitors have become research hotspots at home and abroad. However, compared with foreign countries, there is still a large gap in domestic research on these two types of rust inhibitors.

Method used

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  • Mortar and concrete shrinkage reducing agent having antirust function, and preparation method thereof
  • Mortar and concrete shrinkage reducing agent having antirust function, and preparation method thereof
  • Mortar and concrete shrinkage reducing agent having antirust function, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A formula of mortar and concrete shrinkage reducing agent with antirust function is:

[0030]

[0031] The preparation of the mortar and concrete shrinkage reducing agent with antirust function is carried out as follows:

[0032] (1) Preparation of shrinkage reduction components: Weigh 80kg of acrylamide, 80kg of methyl methacrylate, 120kg of polyethylene glycol monomethyl ether acrylate, add 440kg of water to make material A; weigh 1kg of ammonium persulfate, add 79kg of water Dissolved and made into material B;

[0033] Weigh 100kg of methyl alkenyl polyoxyethylene ether, add 100kg of water, raise the temperature to 60°C, and add material A and material B dropwise respectively. The dripping of material A takes 180 minutes, and the dropping of material B takes 210 minutes. Raise the temperature to 80, keep the temperature for 60 minutes, and cool down to 40℃, standby;

[0034] (2) Preparation of water-soluble organic polymer anti-rust components: Weigh the raw mat...

Embodiment 2

[0037] A formula of mortar and concrete shrinkage reducing agent with antirust function is:

[0038]

[0039] The preparation of the mortar and concrete shrinkage reducing agent with antirust function is carried out as follows:

[0040] (1) Preparation of shrinkage reduction components: Weigh 100kg of acrylamide, 100kg of methyl methacrylate, 160kg of polyethylene glycol monomethyl ether acrylate, add 360kg of water to make material A; weigh 1kg of ammonium persulfate, add 79kg of water Dissolved and made into material B;

[0041] Weigh 100kg of methyl alkenyl polyoxyethylene ether, add 100kg of water, raise the temperature to 60°C, add material A and material B dropwise respectively, the dripping of material A takes 180 minutes, the dropping of material B takes 210 minutes, heat up to 80, keep the temperature for 60 minutes, and cool down to 40℃, standby;

[0042] (2) Preparation of water-soluble organic polymer anti-rust components: Weigh the raw materials of water-solubl...

Embodiment 3

[0045] A formula of mortar and concrete shrinkage reducing agent with antirust function is:

[0046]

[0047] The preparation of the mortar and concrete shrinkage reducing agent with antirust function is carried out as follows:

[0048] (1) Preparation of shrinkage reduction components: Weigh 60kg of acrylamide, 60kg of methyl methacrylate, 180kg of polyethylene glycol monomethyl ether acrylate, add 420kg of water to make material A; weigh 1kg of ammonium persulfate, add 79kg of water Dissolved and made into material B;

[0049] Weigh 100kg of methyl alkenyl polyoxyethylene ether, add 100kg of water, raise the temperature to 60°C, and add material A and material B dropwise respectively. The dripping of material A takes 180 minutes, and the dropping of material B takes 210 minutes. Raise the temperature to 80, keep the temperature for 60 minutes, and cool down to 40℃, standby;

[0050] (2) Preparation of water-soluble organic polymer anti-rust components: Weigh the raw mat...

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Abstract

The invention discloses a mortar and concrete shrinkage reducing agent having an antirust function, and a preparation method thereof. The shrinkage reducing agent comprises 5-20wt% of a shrinkage reducing component, 5-20wt% of a water-soluble organic polymer corrosion inhibiting component, and the balance water. The preparation method of the shrinkage reducing agent comprises the following steps: preparing the shrinkage reducing component; preparing the water-soluble organic polymer corrosion inhibiting component; and weighing the shrinkage reducing component, the water-soluble organic polymer corrosion inhibiting component and water according to the above weight proportions, adding the shrinkage reducing component to the water-soluble organic polymer corrosion inhibiting component, stirring for 10-20min, adding water to adjust the concentration of the obtained solution, uniformly stirring, and discharging the finally obtained product. The shrinkage reducing agent can reduce the plastic shrinkage and the drying shrinkage of concrete, and reduces the drying shrinkage crack occurrence probability of the concrete, so the shrinkage cracking risk of the concrete is greatly reduced, the corrosion of carbon steel is prevented, and the durability of the concrete is improved; and the shrinkage reducing agent has the advantages of non-toxicity, tastelessness, no pollution to the environment and use convenience, and is suitable for concrete in any environment or under any conditions.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to a mortar with antirust function, a concrete shrinkage reducer and a preparation method thereof. Background technique [0002] Compared with masonry structure, steel structure and wooden structure, concrete structure has a short history. It wasn't until 1824 that the invention of Portland cement ushered in a new era for the mass use of concrete. It has only a history of more than 160 years. During the actual use of more than 100 years, a large number of reinforced concrete structures failed prematurely due to various reasons such as concrete cracks and steel corrosion, which greatly shortened the service life of concrete structures. [0003] In recent years, the problem of cracks in concrete has been perplexing the field of construction engineering. There are many reasons for cracks, the most important of which are non-load cracks caused by plastic shrinkage and drying shrink...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B103/60
Inventor 金卫民蒋长清潘卫平张厚平
Owner JIANGSU NIGAO SCI & TECH
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