High-strength adhesive admixture excitant

Abstract

The invention provides a high-strength adhesive admixture exciting agent, and relates to the field of high-strength adhesive admixture exciting agents. The invention provides a high-strength adhesive admixture excitant, the cement comprises the following components in parts by mass: a concrete admixture, a chemical excitant and a physical excitant, the chemical excitant is one or a mixture of two of an alkaline excitant or a sulfate excitant, and the physical excitant is one or a mixture of two of the alkaline excitant and the sulfate excitant. The alkali activator is one or a mixture of more than two of sodium hydroxide, potassium hydroxide or water glass, the composite admixture has multiple functions, the function is enhanced, the stability of a cementing material and the working performance of concrete are improved, the raw materials are low in cost and easy to obtain, and the composite admixture is suitable for large-scale popularization and application. The pressure of the high-strength concrete on the supply of the silica fume and the superfine slag powder is relieved, the efficiency of the steel slag or the fly ash as the admixture is improved, the requirement of sustainable development is met, the hydration reaction efficiency of the admixture can be remarkably improved, and therefore the mechanical property and durability of the material are enhanced.

Description

Technical Field

[0001] The present invention relates to the field of activators for high-strength glue admixtures, and particularly to an activator for high-strength glue admixtures. Background Art

[0002] In addition to problems such as soundness, the low activity coefficient of steel slag as an admixture is also one of the reasons restricting its large-scale application as an admixture. During the preparation of commercial concrete, fly ash is mostly used as an admixture, and its dosage is usually between 15% and 30%. The large demand makes the supply of fly ash very tight. Coupled with the limited high-quality fly ash resources itself, as a siliceous admixture, fly ash can absorb free calcium oxide in steel slag and overcome the possible soundness problems of steel slag. At the same time, the free calcium oxide and its hydrated product calcium hydroxide in steel slag can also be used as activators for the secondary hydration reaction of fly ash. The combined use of the two has the basic conditions to solve the above problems. Therefore, through reasonable technical means, steel slag can be completely compounded as an admixture to meet the requirements of economic and sustainable development.

[0003] The existing technologies for activating the activity of mineral admixtures such as fly ash, steel slag, and slag mainly include physical fine grinding, single addition of chemical activators, or calcium addition treatment, etc. Through a large number of studies, it has been found that the activity of fly ash, steel powder, and slag powder is activated in an alkaline medium or an acidic medium, especially in an alkaline medium. At the same time, some methods and ways to activate the activity of fly ash and steel powder have also been found, but there are problems in that it is difficult to quickly, fully, and economically activate their activity, which is manifested in the relatively low early strength of the formed products of fly ash and steel powder. Summary of the Invention

[0004] The purpose of the present invention is to provide an activator for high-strength glue admixtures to solve the problems raised in the background art above and overcome the existing technical defects.

[0005] An activator for high-strength glue admixtures, the high-strength glue admixture includes the following components in parts by mass: concrete admixture, chemical activator, and physical activator. The chemical activator is one or a mixture of two of an alkaline activator or a sulfate activator. The alkaline activator is one or a mixture of two or more of sodium hydroxide, potassium hydroxide, or water glass. The sulfate activator is one or a mixture of two of gypsum or sodium sulfate. The physical activator is one of a nanomaterial or an early strength agent.

[0006] As a preferred solution, in the activator for high-strength glue admixtures of the present invention, the concrete admixture is steel slag and fly ash, and the mass ratio of the steel slag to the fly ash is (5.5 - 6.5):(3.5 - 4.5).

[0007] As a preferred embodiment, in the activator for high-strength adhesive admixture of the present invention, it includes several proportions of activator formulations. The proportions of the components in one activator formulation are: 10-30% of concrete admixture, 60-75% of alkaline activator, 12-20% of sulfate activator, and 0.3-0.5% of early strength agent, and each percentage is by mass percentage.

[0008] As a preferred embodiment, in the activator for high-strength adhesive admixture of the present invention, the proportions of the components in one activator formulation are: 10% of concrete admixture, 74.5% of alkaline activator, 15% of sulfate activator, and 0.5% of early strength agent, and each percentage is by mass percentage. According to the formulation ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early strength agent is added at 0.5% of the total mass of the above-mentioned admixtures, and ground to a 45um sieve with a residue not exceeding 10%, thus obtaining Product 1. The compressive strength is increased by 20% at 7 days and 10% at 28 days, and the flexural strength is increased by 15%.

[0009] As a preferred embodiment, in the activator for high-strength adhesive admixture of the present invention, the proportions of the components in one activator formulation are: 20% of concrete admixture, 67.7% of alkaline activator, 12% of sulfate activator, and 0.3% of early strength agent, and each percentage is by mass percentage. According to the formulation ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early strength agent is added at 0.3% of the total mass of the above-mentioned admixtures, and ground to a 45um sieve with a residue not exceeding 10%, thus obtaining Product 2. The compressive strength is increased by 30% at 7 days and 15% at 28 days, and the flexural strength is increased by 25%.

[0010] As a preferred embodiment, in the activator for high-strength adhesive admixture of the present invention, the proportions of the components in one activator formulation are: 30% of concrete admixture, 52.5% of alkaline activator, 17% of sulfate activator, and 0.5% of early strength agent, and each percentage is by mass percentage. According to the formulation ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early strength agent is added at 0.5% of the total mass of the above-mentioned admixtures, and ground to a 45um sieve with a residue not exceeding 10%, thus obtaining Product 3. The compressive strength is increased by 40% at 7 days and 20% at 28 days, and the flexural strength is increased by 35%.

[0011] As a preferred embodiment, in the activator for high-strength glue admixture of the present invention, the proportion of each component in one activator formula is as follows: 15% concrete admixture, 64.6% alkaline activator, 20% sulfate activator, and 0.4% early strength agent, and each percentage is by mass. According to the formula ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early strength agent is added at 0.4% of the total mass of the above-mentioned admixtures, and ground to a 45um sieve with a residue not exceeding 10%, thus obtaining Product 4, with the 7-day compressive strength increased by 50%, the 28-day strength increased by 30%, and the flexural strength increased by 40%.

[0012] The preparation method of the activator for high-strength glue admixture in the present invention includes

[0013] Step 1: Add the concrete admixture, alkaline activator, and sulfate activator to a ball mill;

[0014] Step 2: Add the nanomaterial or early strength agent at 0.1 - 0.5% of the total mass after mixing the concrete admixture, alkaline activator, and sulfate activator, and grind to a 45um sieve with a residue not exceeding 10%;

[0015] Step 3: Obtain the activator for high-strength glue admixture.

[0016] Compared with the prior art, the beneficial effects of the present invention include:

[0017] 1. The composite admixture of the present invention has multiple functions. In addition to the strengthening function, it also has characteristics such as improving the stability of the cementitious material and the working performance of concrete;

[0018] 2. The raw materials of the present invention are cheap and easily obtainable, which not only alleviates the pressure on the supply of silica fume and ultra-fine slag powder for high-strength concrete, but also improves the efficiency of steel slag or fly ash as an admixture, meeting the needs of sustainable development;

[0019] 3. Through chemical or physical actions, the present invention activates the silicate activity in industrial waste residues (such as slag and fly ash), promotes their reaction with cement hydration products (such as Ca(OH)2), and generates more C-S-H gels.

[0020] 4. The present invention has the advantage of improving the early strength of the admixture: solving the problem of low early strength of the admixture system and accelerating the hydration process.

[0021] 5. The present invention has the advantage of improving the microstructure of the admixture: reducing the porosity, enhancing the compactness, and improving the impermeability and durability.

[0022] 6. The present invention has the advantages of energy conservation and environmental protection: by largely replacing cement, it reduces carbon emissions and realizes the resource utilization of solid waste. Description of the Drawings

[0023] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0024] Figure 1 Schematically shows a proportional diagram proposed according to an embodiment of the present invention;

[0025] Figure 2 Schematically shows a strength analysis diagram proposed according to an embodiment of the present invention. Specific embodiments

[0026] It is easily understood that according to the technical solution of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can propose various structural ways and implementation ways that can be mutually replaced. Therefore, the following specific embodiments and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0027] According to an embodiment of the present invention in combination with the attached Figure 1-2 Shown.

[0028] A high-strength glue admixture activator, the high-strength glue admixture includes the following components in parts by mass: concrete admixture, chemical activator, and physical activator. The chemical activator is one or a mixture of two of an alkaline activator or a sulfate activator. The alkaline activator is one or a mixture of two or more of sodium hydroxide, potassium hydroxide, or water glass. The sulfate activator is one or a mixture of two of gypsum or sodium sulfate. The physical activator is one of a nanomaterial or an early strength agent.

[0029] As a preferred solution, in the high-strength glue admixture activator of the present invention, the concrete admixture is steel slag and fly ash, and the mass ratio of the steel slag to the fly ash is (5.5 - 6.5):(3.5 - 4.5).

[0030] As a preferred solution, in the high-strength glue admixture activator of the present invention, it includes several proportions of activator formulations. The proportions of the components of one activator formulation are: 10 - 30% concrete admixture, 60 - 75% alkaline activator, 12 - 20% sulfate activator, and 0.3 - 0.5% early strength agent, and each percentage is a mass percentage.

[0031] As a preferred embodiment, in the activator for high-strength glue admixture of the present invention, the proportion of each component in one activator formula is: 10% concrete admixture, 74.5% alkaline activator, 15% sulfate activator, and 0.5% early-strength agent, and each percentage is by mass. According to the formula ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early-strength agent is added at 0.5% of the total mass of the above-mentioned admixtures, ground to a 45um sieve, and the sieve residue is not more than 10%, thus obtaining Product 1, with the compressive strength increased by 20% at 7 days and 10% at 28 days, and the flexural strength increased by 15%.

[0032] As a preferred embodiment, in the activator for high-strength glue admixture of the present invention, the proportion of each component in one activator formula is: 20% concrete admixture, 67.7% alkaline activator, 12% sulfate activator, and 0.3% early-strength agent, and each percentage is by mass. According to the formula ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early-strength agent is added at 0.3% of the total mass of the above-mentioned admixtures, ground to a 45um sieve, and the sieve residue is not more than 10%, thus obtaining Product 2, with the compressive strength increased by 30% at 7 days and 15% at 28 days, and the flexural strength increased by 25%.

[0033] As a preferred embodiment, in the activator for high-strength glue admixture of the present invention, the proportion of each component in one activator formula is: 30% concrete admixture, 52.5% alkaline activator, 17% sulfate activator, and 0.5% early-strength agent, and each percentage is by mass. According to the formula ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early-strength agent is added at 0.5% of the total mass of the above-mentioned admixtures, ground to a 45um sieve, and the sieve residue is not more than 10%, thus obtaining Product 3, with the compressive strength increased by 40% at 7 days and 20% at 28 days, and the flexural strength increased by 35%.

[0034] As a preferred embodiment, in the activator for high-strength glue admixture of the present invention, the proportion of each component in one activator formula is: 15% concrete admixture, 64.6% alkaline activator, 20% sulfate activator, and 0.4% early-strength agent, and each percentage is by mass. According to the formula ratio, the concrete admixture, alkaline activator, and sulfate activator are added to a ball mill, and then the early-strength agent is added at 0.4% of the total mass of the above-mentioned admixtures, ground to a 45um sieve, and the sieve residue is not more than 10%, thus obtaining Product 4, with the compressive strength increased by 50% at 7 days and 30% at 28 days, and the flexural strength increased by 40%.

[0035] The preparation method of the activator for high-strength glue admixture in the present invention includes

[0036] Step 1: After adding concrete admixtures, alkaline activators, and sulfate activators into a ball mill;

[0037] Step 2: Add nano materials or early strength agents in an amount of 0.1 - 0.5% of the total mass of the mixture of concrete admixtures, alkaline activators, and sulfate activators, and grind to a 45um sieve with a residue not exceeding 10%;

[0038] Step 3: Obtain a high-strength adhesive admixture activator.

[0039] Working principle: After adding concrete admixtures, alkaline activators, and sulfate activators into a ball mill, add nano materials or early strength agents in an amount of 0.1 - 0.5% of the total mass of the mixture of concrete admixtures, alkaline activators, and sulfate activators, and grind to a 45um sieve with a residue not exceeding 10% to obtain a high-strength adhesive admixture activator.

[0040] The technical scope of the present invention is not limited to the content described above. Without departing from the technical idea of the present invention, those skilled in the art can make various deformations and modifications to the above embodiments, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A high-strength glue admixture activator, characterized in that The high-strength glue admixture comprises the following components in parts by mass: concrete admixture, chemical activator and physical activator. The chemical activator is one or a mixture of two of an alkaline activator or a sulfate activator. The alkaline activator is one or a mixture of two or more of sodium hydroxide, potassium hydroxide or water glass. The sulfate activator is one or a mixture of two of gypsum or sodium sulfate. The physical activator is one of a nanomaterial or an early strength agent.

2. The activator for high-strength glue admixture according to claim 1, characterized in that: The concrete admixture is steel slag and fly ash, and the mass ratio of the steel slag to the fly ash is (5.5 - 6.5):(3.5 - 4.5).

3. A high-strength adhesive admixture activator according to claim 1, characterized in that: It includes several proportions of activator formulations. The proportion of each component in one activator formulation is: 10 - 30% of concrete admixture, 60 - 75% of alkaline activator, 12 - 20% of sulfate activator and 0.3 - 0.5% of early strength agent, and each percentage is by mass.

4. The activator for high-strength glue admixture according to claim 1, characterized in that: The proportion of each component in one activator formulation is: 10% of concrete admixture, 74.5% of alkaline activator, 15% of sulfate activator and 0.5% of early strength agent, and each percentage is by mass.

5. A high-strength adhesive admixture activator according to claim 1, characterized in that: The proportion of each component in one activator formulation is: 20% of concrete admixture, 67.7% of alkaline activator, 12% of sulfate activator and 0.3% of early strength agent, and each percentage is by mass.

6. The activator for high-strength glue admixture according to claim 1, wherein: The proportion of each component in one activator formulation is: 30% of concrete admixture, 52.5% of alkaline activator, 17% of sulfate activator and 0.5% of early strength agent, and each percentage is by mass.

7. A high-strength glue admixture activator according to claim 1, characterized in that: The proportion of each component in one activator formulation is: 15% of concrete admixture, 64.6% of alkaline activator, 20% of sulfate activator and 0.4% of early strength agent, and each percentage is by mass.

8. A preparation method of the activator for the high-strength glue admixture according to claim 1, comprising Step 1: Add the concrete admixture, alkaline activator and sulfate activator into a ball mill; Step 2: Add the nanomaterial or early strength agent in an amount of 0.1 - 0.5% of the total mass after mixing the concrete admixture, alkaline activator and sulfate activator, and grind to a 45um sieve with a sieve residue not greater than 10%; Step 3: Obtain the activator for the high-strength glue admixture.

Images