阅读说明：本技术 一种混凝土表面增强剂 (Concrete surface reinforcing agent ) 是由 王海新 张玺 商睿 李海洋 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种混凝土表面增强剂,属于增强剂技术领域,解决了现有增强剂防水性不好,导致混凝土容易渗水的问题；包括以下按照重量份的原料：氧化钙40-100份、氧化镁10-25份、表面活性剂1-10份、防腐剂1-5份、海藻酸钠10-20份、减水剂1-10份、聚乙二醇10-20份、粉煤灰10-20份、抗渗剂1-8份、水泥10-50份、钙锌稳定剂1-8份；本发明所得的混凝土表面增强剂具有耐腐蚀性和耐水性,同时能够在高温或寒冷的环境下正常使用,且减水剂的设置避免了混凝土渗水,保证了混凝土的强度,防腐剂的设置避免了混凝土的损坏,具有耐酸性和耐碱性,进一步保证了混凝土的强度。(The invention discloses a concrete surface reinforcing agent, belongs to the technical field of reinforcing agents, and solves the problem that the existing reinforcing agent is poor in waterproofness and causes water seepage of concrete; the feed comprises the following raw materials in parts by weight: 40-100 parts of calcium oxide, 10-25 parts of magnesium oxide, 1-10 parts of surfactant, 1-5 parts of preservative, 10-20 parts of sodium alginate, 1-10 parts of water reducing agent, 10-20 parts of polyethylene glycol, 10-20 parts of fly ash, 1-8 parts of anti-permeability agent, 10-50 parts of cement and 1-8 parts of calcium-zinc stabilizer; the concrete surface reinforcing agent obtained by the invention has corrosion resistance and water resistance, can be normally used in a high-temperature or cold environment, avoids water seepage of concrete due to the arrangement of the water reducing agent, ensures the strength of the concrete, avoids damage of the concrete due to the arrangement of the preservative, has acid resistance and alkali resistance, and further ensures the strength of the concrete.)

1. The concrete surface reinforcing agent is characterized by comprising the following raw materials in parts by weight: 40-100 parts of calcium oxide, 10-25 parts of magnesium oxide, 1-10 parts of surfactant, 1-5 parts of preservative, 10-20 parts of sodium alginate, 1-10 parts of water reducing agent, 10-20 parts of polyethylene glycol, 10-20 parts of fly ash, 1-8 parts of anti-permeability agent, 10-50 parts of cement and 1-8 parts of calcium-zinc stabilizer.

2. The concrete surface reinforcing agent according to claim 1, which comprises the following raw materials in parts by weight: 45-90 parts of calcium oxide, 12-20 parts of magnesium oxide, 2-9 parts of surfactant, 2-4 parts of preservative, 12-18 parts of sodium alginate, 2-8 parts of water reducing agent, 13-17 parts of polyethylene glycol, 11-19 parts of fly ash, 2-7 parts of anti-permeability agent, 20-44 parts of cement and 2-7 parts of calcium-zinc stabilizer.

3. The concrete surface reinforcing agent according to claim 2, characterized by comprising the following raw materials in parts by weight: 50 parts of calcium oxide, 16 parts of magnesium oxide, 7 parts of surfactant, 3 parts of preservative, 15 parts of sodium alginate, 5 parts of water reducing agent, 15 parts of polyethylene glycol, 16 parts of fly ash, 5 parts of anti-permeability agent, 30 parts of cement and 4 parts of calcium zinc stabilizer.

4. The concrete surface enhancer as claimed in any one of claims 1 to 3, wherein the fineness of the fly ash is 100-400 mesh, the water content of the fly ash is 0.5%, and the loose bulk density of the fly ash is 500Kg/m²。

5. A concrete surface enhancer according to any one of claims 1 to 3, wherein the cement is a class 43 portland cement.

6. The concrete surface enhancer as claimed in claim 1, wherein the surfactant is one or more of sodium caseinate, sodium fatty acid polyoxyethylene ether sulfate and trialkyl betaine.

7. The concrete surface enhancer as claimed in claim 1, wherein the preservative is a mixture of sorbic acid and polyhexamethylene monoguanidine, and the mass of sorbic acid and polyhexamethylene monoguanidine is 1-2: 3-9.

8. The concrete surface enhancer of claim 1, wherein the water reducing agent is a naphthalene based water reducing agent.

9. The concrete surface reinforcing agent according to any one of claims 1 to 3, wherein the anti-permeability agent is one of mica powder or fumed silica.

Technical Field

The invention relates to the technical field of reinforcing agents, in particular to a concrete surface reinforcing agent.

Background

In the actual construction process of concrete engineering, the type of cement, the water cement ratio of concrete and even the use of some additives which affect the strength of concrete all affect the use strength of concrete. For projects with clear requirements on the lightness of concrete, how to better maintain and even improve the strength of the concrete needs to introduce other additives for adjustment. The surface reinforcing agent can well play a role in increasing the strength of the concrete.

Chinese patent CN111170765A discloses a multi-component concrete surface reinforcing agent, which comprises A, B, C three components, wherein the component A comprises the following raw materials in parts by weight: 10-15 parts of sodium alginate, 0.5-3 parts of fluorocarbon surfactant, 1-3 parts of nano silicon dioxide and water which are complemented to 100 parts; the component B comprises the following raw materials in parts by weight: 1-5 parts of fluorocarbon surfactant, 10-20 parts of soluble silicate, 10-15 parts of soluble fluorosilicate, 0.1-2 parts of water reducing agent and water which are added to 100 parts, but the water resistance of the reinforcing agent is not good, so that the concrete is easy to seep, and therefore, the concrete surface reinforcing agent is provided.

Disclosure of Invention

The invention aims to provide a concrete surface reinforcing agent to solve the problem that the existing reinforcing agent is poor in waterproofness and causes water seepage of concrete.

In order to achieve the purpose, the invention provides the following technical scheme:

a concrete surface reinforcing agent comprises the following raw materials in parts by weight: 40-100 parts of calcium oxide, 10-25 parts of magnesium oxide, 1-10 parts of surfactant, 1-5 parts of preservative, 10-20 parts of sodium alginate, 1-10 parts of water reducing agent, 10-20 parts of polyethylene glycol, 10-20 parts of fly ash, 1-8 parts of anti-permeability agent, 10-50 parts of cement and 1-8 parts of calcium-zinc stabilizer.

As a further scheme of the invention: the feed comprises the following raw materials in parts by weight: 45-90 parts of calcium oxide, 12-20 parts of magnesium oxide, 2-9 parts of surfactant, 2-4 parts of preservative, 12-18 parts of sodium alginate, 2-8 parts of water reducing agent, 13-17 parts of polyethylene glycol, 11-19 parts of fly ash, 2-7 parts of anti-permeability agent, 20-44 parts of cement and 2-7 parts of calcium-zinc stabilizer.

As a still further scheme of the invention: the feed comprises the following raw materials in parts by weight: 50 parts of calcium oxide, 16 parts of magnesium oxide, 7 parts of surfactant, 3 parts of preservative, 15 parts of sodium alginate, 5 parts of water reducing agent, 15 parts of polyethylene glycol, 16 parts of fly ash, 5 parts of anti-permeability agent, 30 parts of cement and 4 parts of calcium zinc stabilizer.

As a still further scheme of the invention: the fineness of the fly ash is 100-400 meshes, the water content of the fly ash is 0.5 percent, and the loose bulk density of the fly ash is 500Kg/m²。

As a still further scheme of the invention: the cement is 43-grade portland cement.

As a still further scheme of the invention: the surfactant is one or a mixture of more of sodium caseinate, sodium polyoxyethylene fatty acid ether sulfate and trialkyl betaine.

As a still further scheme of the invention: the preservative is a mixture of sorbic acid and polyhexamethylene monoguanidine, and the mass ratio of the sorbic acid to the polyhexamethylene monoguanidine is 1-2: 3-9.

As a still further scheme of the invention: the water reducing agent is a naphthalene water reducing agent.

As a still further scheme of the invention: the anti-permeability agent is one of mica powder or fumed silica.

As a still further scheme of the invention: the preparation method of the preservative comprises the following steps: adding sorbic acid into a stirring box, then starting the stirring box, heating the stirring box to 55 ℃, adding polyhexamethylene guanidine into the stirring box, keeping the rotation speed for stirring for 2 hours, and then standing and cooling for 3 hours for later use, wherein the rotation speed of the stirring box is 100 revolutions per minute.

The preparation method of the concrete surface reinforcing agent comprises the following steps:

1) weighing calcium oxide and magnesium oxide, uniformly mixing, putting into a vacuum drying oven for drying at 155 ℃ for 30min, crushing the mixture after drying, and adding absolute ethyl alcohol with the weight being 6 times that of the mixture to obtain a mixed component A for later use;

2) weighing a surfactant, a preservative, sodium alginate and a water reducing agent, putting into a reaction kettle, adding acetic acid, heating to 130 ℃, naturally cooling after the reaction is finished, discharging, filtering, performing ball milling treatment on the mixture, performing ball milling on liquid level ethanol, performing dry distillation treatment on the mixture at 270 ℃ for 3 hours, and taking a solid product after dry distillation to obtain a mixed component B for later use;

3) weighing polyethylene glycol, fly ash, an anti-permeability agent, cement and a calcium-zinc stabilizer, stirring and mixing for 1 hour to obtain a mixing component C for later use;

4) mixing the mixed component A, the mixed component B and the mixed component C, performing ultrasonic treatment, then sending into a calcining furnace, and performing calcining treatment at the temperature of 620-650 ℃ for 5 hours to obtain the composite.

Compared with the prior art, the invention has the beneficial effects that: the concrete surface reinforcing agent obtained by the invention has corrosion resistance and water resistance, can be normally used in a high-temperature or cold environment, avoids water seepage of concrete due to the arrangement of the water reducing agent, ensures the strength of the concrete, avoids damage of the concrete due to the arrangement of the preservative, has acid resistance and alkali resistance, and further ensures the strength of the concrete.

Detailed Description

The technical solutions of the present invention will be described in further detail with reference to specific embodiments, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.