阅读说明：本技术 机制砂混凝土用增强调节剂及混凝土 (Reinforcing and regulating agent for machine-made sand concrete and concrete ) 是由 苏宇 冉碟 陶明 于 2021-10-19 设计创作，主要内容包括：本发明涉及一种机制砂混凝土用增强调节剂,其中机制砂混凝土用增强调节剂以重量份数计,包括处理固废用活性激发剂200-300份,醇胺化合物10-30份,分散剂5-20份,渗透剂4-10份,增稠剂3-8份,硅酸钾30-50份,添加剂2-30份,以及水500-600份；所述活性激发剂是由含硅氧体、硅烷键合的无机高分子铝硅酸盐矿物通过耦合聚电解质类分散剂组成的共聚物质。本发明提供的机制砂混凝土用增强调节剂激发如粉煤灰的活性,能促使粉煤灰Si-O键和Al-O键的断裂,加快粉煤灰的水化速度,也能激发破坏如矿粉的硅氧网结晶体,使玻璃体发生解体,参与基材的水化反应,促进矿渣和硅酸钠的进一步水解。(The invention relates to a reinforcing and regulating agent for machine-made sand concrete, wherein the reinforcing and regulating agent for machine-made sand concrete comprises, by weight, 300 parts of an active exciting agent for treating solid waste, 10-30 parts of an alcohol amine compound, 5-20 parts of a dispersing agent, 4-10 parts of a penetrating agent, 3-8 parts of a thickening agent, 30-50 parts of potassium silicate, 2-30 parts of an additive and 600 parts of water; the active excitant is a copolymerization substance which is composed of inorganic polymer aluminosilicate minerals containing silicon oxide and bonded by silane and a coupling polyelectrolyte dispersing agent. The reinforcing and regulating agent for machine-made sand concrete provided by the invention can excite the activity of fly ash, promote the fracture of Si-O bond and Al-O bond of fly ash, accelerate the hydration speed of fly ash, and also can excite and destroy silica network crystals such as mineral powder, so that vitreous bodies are disintegrated to participate in the hydration reaction of base materials, and the further hydrolysis of slag and sodium silicate is promoted.)

1. A reinforcing and regulating agent for machine-made sand concrete is characterized by comprising, by weight, 300 parts of an active excitant for treating solid waste, 10-30 parts of an alcohol amine compound, 5-20 parts of a dispersant, 4-10 parts of a penetrating agent, 3-8 parts of a thickening agent, 30-50 parts of potassium silicate, 2-30 parts of an additive and 600 parts of water; the active excitant is a copolymerization substance which is composed of inorganic polymer aluminosilicate minerals containing silicon oxide and bonded by silane and a coupling polyelectrolyte dispersing agent.

2. The reinforcing agent for machine-made sand concrete as claimed in claim 1, wherein the dispersing agent is at least one selected from the group consisting of alkenyl distearamide, stearic acid monoglyceride, tristearic acid glyceride and a carboxylic acid-sulfonic acid-acrylate terpolymer.

3. The reinforcing admixture for machine-made sand concrete as claimed in claim 1, wherein said alcohol amine compound is at least one selected from the group consisting of diethanol monoisopropanolamine, monoethanoldiisopropanolamine and triisopropanolamine.

4. The reinforcing modifier for machine-made sand concrete as claimed in claim 1, wherein the penetrating agent is selected from one of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylate or phosphate compound.

5. The reinforcing modifier for machine-made sand concrete as claimed in claim 1, wherein the thickener is at least one selected from fumed silica, sodium bentonite, organobentonite, diatomaceous earth, attapulgite, zeolite and silica gel.

6. The reinforcing agent for machine-made sand concrete as claimed in claim 1, wherein said additive is at least one selected from the group consisting of fluoride, alkali substance of amine and alkali metal silicate hydroxide.

7. The reinforcing agent for machine-made sand concrete as claimed in claim 1, wherein the temperature of the water is 25 to 35 ℃.

8. The concrete is characterized by comprising cement, fly ash, mineral powder, river sand, stones, a water reducing agent and the reinforcing and adjusting agent for the machine-made sand concrete as claimed in any one of claims 1 to 7, wherein the adding amount of the reinforcing and adjusting agent for the machine-made sand concrete is 0.2% of the total weight of a cementing material.

Technical Field

The invention relates to the field of building material additives, in particular to a reinforcing and regulating agent for machine-made sand concrete and concrete.

Background

Concrete is a building material generally composed of cement, mineral admixtures, fine aggregates, coarse aggregates, admixtures and water, and has an irreplaceable position in the construction field. Concrete is widely used as a building base material worldwide. In order to meet the requirements of high workability and strength of concrete, the cement consumption in concrete is generally high. In the actual production process of cement, coal resources are greatly consumed, and pollutants such as carbon dioxide, sulfur dioxide and the like are also greatly discharged. Therefore, the heavy use of cement brings serious resource consumption and environmental pollution pressure.

Because the resources and the mass of auxiliary materials (mineral powder and fly ash) in various regions are different, the potential activity of the excavating admixture cannot be fully treated, and in order to obtain better concrete performance, a large amount of cement materials are used in a plurality of mixing stations, so that about 20-30% of cement is used as an inert filling material in the cement hydration process, the cement cannot fully play a role, and the mineral powder or the fly ash only plays a weak role in the concrete, so that the waste of resources is caused, and more importantly, negative effects are generated on the continuous increase of the durability and the later strength of the concrete.

Disclosure of Invention

In view of the above, it is desirable to provide a reinforcing modifier for machine-made sand concrete and concrete that address at least one of the above-mentioned problems.

The reinforcing and regulating agent for machine-made sand concrete provided by the invention comprises, by weight, 300 parts of an active exciting agent for treating solid waste, 10-30 parts of an alcohol amine compound, 5-20 parts of a dispersing agent, 4-10 parts of a penetrating agent, 3-8 parts of a thickening agent, 30-50 parts of potassium silicate, 2-30 parts of an additive and 600 parts of water; the active excitant is a copolymerization substance which is composed of inorganic polymer aluminosilicate minerals containing silicon oxide and bonded by silane and a coupling polyelectrolyte dispersing agent.

In one embodiment, the dispersant is selected from at least one of a vinyl bis-stearamide, a glyceryl monostearate, a glyceryl tristearate, or a carboxylic acid-sulfonic acid-acrylate terpolymer.

In one embodiment, the alcohol amine compound is selected from at least one of diethanol monoisopropanolamine, monoethanol diisopropanolamine, or triisopropanolamine.

In one embodiment, the penetrating agent is selected from one of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylate or phosphate ester compounds.

In one embodiment, the thickener is selected from at least one of fumed silica, sodium bentonite, organobentonite, diatomaceous earth, attapulgite, zeolite, or silica gel.

In one embodiment, the additive is selected from at least one of fluoride, an alkaline source of an amine, or a silicate alkali metal hydroxide.

In one embodiment, the temperature of the water is 25-35 ℃.

The invention also provides concrete, which comprises cement, fly ash, mineral powder, river sand, stones, a water reducing agent and the reinforcing and adjusting agent for machine-made sand concrete, wherein the addition amount of the reinforcing and adjusting agent for machine-made sand concrete is 0.2% of the total weight of other material components.

The technical scheme provided by the embodiment of the invention has the following beneficial technical effects:

the reinforcing and regulating agent for machine-made sand concrete provided by the invention can excite the activity of fly ash, promote the fracture of Si-O bond and Al-O bond of fly ash, accelerate the hydration speed of fly ash, and also can excite and destroy silica network crystals such as mineral powder, so that vitreous bodies are disintegrated to participate in the hydration reaction of base materials, and the further hydrolysis of slag and sodium silicate is promoted.

Additional aspects and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Detailed Description

It will be understood by those skilled in the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.

The invention aims to provide a reinforcing and regulating agent for machine-made sand concrete, which can ensure that the dispersion degree of cement in concrete is better, improve the hydration efficiency of the cement, and change the crystal structures, chemical compositions and physical and chemical properties of mineral powder and fly ash per se, so that activated atom structures are rearranged and recrystallized, and a surface layer is spontaneously recombined to form an amorphous structure. The mineral powder and the fly ash are enabled to have irregular internal crystal structures and generate multiphase crystal form transformation, so that lattice defects are generated, the surface energy is increased, and the mechanical properties and the crystallographic properties of the mineral powder and the fly ash are changed regularly, so that the potential activity of the mineral powder and the fly ash is released, the strength of concrete is improved, and the production cost is reduced.

The reinforcing and regulating agent for machine-made sand concrete provided by the invention comprises, by weight, 300 parts of an active exciting agent for treating solid waste, 10-30 parts of an alcohol amine compound, 5-20 parts of a dispersing agent, 4-10 parts of a penetrating agent, 3-8 parts of a thickening agent, 30-50 parts of potassium silicate, 2-30 parts of an additive and 600 parts of water; the active excitant is a copolymerization substance which is composed of inorganic polymer aluminosilicate minerals bonded by silicon oxide and silane through coupling polyelectrolyte dispersing agents.

In the above embodiments, the dispersant is selected from at least one of hexenyl bis stearamide, glyceryl monostearate, glyceryl tristearate, or a carboxylic acid-sulfonic acid-acrylate terpolymer. The alcohol amine compound is at least one selected from diethanol monoisopropanolamine, monoethanol diisopropanolamine or triisopropanolamine. The penetrating agent is selected from one of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylates or phosphate compounds. The thickener is at least one selected from fumed silica, sodium bentonite, organic bentonite, diatomite, attapulgite, zeolite and silica gel. The additive is at least one of sodium fluoride, sodium sulfate, diethylamine, calcium silicate or sodium hydroxide. The temperature of the water is 25 +/-5 ℃.

The active excitant is a product independently developed by Beijing stone science and technology limited, and contains a copolymerization substance formed by coupling a polyelectrolyte dispersing agent with a silicon oxide and a silane-bonded inorganic polymer aluminosilicate mineral, and can promote the fracture of a silicon-oxygen bond and an Al-O bond of the fly ash, accelerate the hydration speed of the fly ash, promote the disintegration of a silica-network-bonded crystal of slag, participate in the hydration reaction of a base material to generate calcium silicate (C-S-H) gel, improve the activity of mineral powder and fly ash in concrete, and improve the overall performance of the concrete.

The reinforcing and regulating agent for machine-made sand concrete provided by the invention can excite the activity of fly ash, promote the fracture of Si-O bond and Al-O bond of fly ash, accelerate the hydration speed of fly ash, and also can excite and destroy silica network crystals such as mineral powder, so that vitreous bodies are disintegrated to participate in the hydration reaction of base materials, and the further hydrolysis of slag and sodium silicate is promoted.

The material provided by the invention uses water as a mass transfer medium and a reaction medium under a normal temperature environment to promote the disintegration of the aggregate of the mineral powder and the fly ash crystalline phase and the glass phase and generate more continuous phases rich in calcium, so that the hydration of the mineral powder and the fly ash is accelerated, and the material shows excellent hydraulic activity.

The reinforcing regulator for machine-made sand concrete has the characteristics of organic polymer, can quickly destroy the surface structures of glass bodies of mineral powder and fly ash, enables water to be more easily infiltrated and to perform hydration reaction, promotes the dispersion and disintegration of the mineral powder and the fly ash, and is beneficial to the formation of hydrate network structures. The formation of cementitious calcium silicate hydrate and calcium aluminate hydrate products is increased and strength is produced.

The reinforced regulator for machine-made sand concrete has low mixing amount, can replace 10-30% of the same cement in the concrete in the same amount, and greatly reduces the production cost of buildings.

The following are specific examples:

example 1

The material is prepared from the following raw materials in parts by weight: 200 parts of active exciting agent for treating solid waste, 30 parts of diethanol monoisopropanolamine, 5 parts of hexenyl bis stearamide, 6 parts of fatty alcohol-polyoxyethylene ether, 4 parts of sodium bentonite, 30 parts of potassium silicate, 20 parts of sodium hydroxide and 500 parts of water are stirred at a low speed for 1 hour at a temperature of 30 ℃ to obtain the reinforcing and regulating agent A for the machine-made sand concrete.

Example 2

The material is prepared from the following raw materials in parts by weight: 250 parts of active exciting agent for treating solid waste, 30 parts of triisopropanolamine, 15 parts of stearic acid monoglyceride, 7 parts of phosphate compound, 6 parts of fumed silica, 30 parts of potassium silicate, 2 parts of sodium fluoride and 500 parts of water are stirred at low speed for 1 hour at the temperature of 35 ℃ to obtain the reinforcing regulator B for the machine-made sand concrete. The fumed silica is fumed silica.

Example 3

The material is prepared from the following raw materials in parts by weight: 250 parts of active exciting agent for treating solid waste, 40 parts of triisopropanolamine, 20 parts of carboxylic acid-sulfonic acid-acrylate terpolymer, 6 parts of alkylphenol polyoxyethylene, 6 parts of organic bentonite, 40 parts of potassium silicate, 20 parts of sodium hydroxide and 500 parts of water are stirred at a low speed for 1 hour at a temperature of 25 ℃ to obtain the reinforcing and regulating agent C for the machine-made sand concrete.

Example 4

The material is prepared from the following raw materials in parts by weight: 260 parts of active exciting agent for treating solid wastes, 30 parts of monoethanol diisopropanolamine, 5 parts of hexenyl bis-stearamide, 10 parts of alkylphenol polyoxyethylene ether, 6 parts of diatomite and potassium silicate50Stirring 30 parts of sodium sulfate and 600 parts of water at a low speed for 1 hour at the temperature of 30 ℃ to obtain the cement for machine-made sand concreteA strong modifier D.

Example 5

The material is prepared from the following raw materials in parts by weight: 300 parts of active exciting agent for treating solid waste, 40 parts of triisopropanolamine, 5 parts of tristearin, 8 parts of fatty alcohol-polyoxyethylene ether, 6 parts of zeolite, 30 parts of potassium silicate, 5 parts of ethylenediamine, 20 parts of sodium silicate and 500 parts of water are stirred at a low speed for 1 hour at the temperature of 30 ℃ to obtain the machine-made reinforcing regulator E for concrete.

Based on the same invention concept, the invention also provides concrete, the concrete adopts the reinforcing and regulating agent for the machine-made sand concrete, and the addition amount of the reinforcing and regulating agent for the machine-made sand concrete is 0.2 percent of the total weight of the cementing material components.

Concrete experimental material

Cement: tianshan P.O 42.5.5

Fly ash: xinjiang II fly ash

Mineral powder: xinjiang Dai S75 grade mineral powder

River sand: fineness modulus is 2.8, mud content is 1.6%

Stone: the stone in the Korla quarry and the continuous graded stone of 5-20 mm.

Water reducing agent: YS-L-G polycarboxylic acid high-efficiency water reducing agent

Machine-made sand reinforcing regulator: A. b, C, D, E, the addition amount is 0.2% of the total amount of the cementing materials (namely cement, fly ash and mineral powder) in the concrete.

The concrete formulation is as follows 1:

table 1 concrete formulation table

Table 2 concrete experimental data:

it is apparent from the concrete experimental data in table 2 above that, under the condition of reducing the cement consumption, the machine-made sand strengthening regulator is added in a certain proportion, under the condition of not reducing the water consumption of single-side concrete, the working performance of the fresh concrete is not affected by the reduction of the cement consumption, and the later strength of the concrete is obviously increased under the condition of keeping the early strength level. Therefore, the reinforcing and regulating agent for machine-made sand concrete provided by the invention has the effects of saving resources and improving the quality of concrete, and has strong popularization and application values.

Those of skill in the art will understand that the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more of the embodiments or examples described herein.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.