Water-permeable corrosion-resistant environment-friendly concrete product and preparation method thereof

Abstract

The invention discloses a water-permeable corrosion-resistant environment-friendly concrete product and a preparation method thereof. The invention belongs to the technical field of concrete, and the concrete product has good water permeability, can effectively solve the problem of urban ponding, and improves the urban environment quality; by adding the corrosion inhibitor, the corrosion resistance of a concrete product is improved, the service life of the concrete product is prolonged, meanwhile, industrial waste residues such as fly ash and slag powder are adopted as raw materials, consumption of natural resources is reduced, the production cost is reduced, waste discharge is also reduced, and good environmental protection benefits are achieved; the reinforced fibers are added, so that the strength and toughness of the concrete product are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete, and specifically refers to a permeable and corrosion-resistant environmental protection concrete product and its preparation method. Background Art

[0002] With the continuous acceleration of the urbanization process, traditional concrete products have been widely used in urban construction. However, ordinary concrete has problems such as poor water permeability and easy corrosion. During rainfall, traditional concrete roads are prone to water accumulation, affecting traffic and the urban environment. At the same time, in some special environments, such as near the sea, near chemical plants, etc., concrete products are easily corroded, reducing their service life.

[0003] In today's urban construction and infrastructure development, concrete products are widely used as an important building material. However, many problems have gradually emerged in the actual use of traditional concrete products.

[0004] On the one hand, the water permeability of ordinary concrete is extremely poor. With the acceleration of the urbanization process, large areas of traditional concrete roads and building structures make it difficult for rainwater to penetrate underground. This not only easily leads to urban waterlogging problems, bringing great inconvenience to people's lives and traffic, but also affects the ecological balance of the city. The inability of rainwater to penetrate in time makes the underground water resources unable to be effectively replenished, and at the same time, the increase in surface runoff also brings great pressure to the urban drainage system.

[0005] On the other hand, in some special environments, such as the high-salt environment in coastal areas and the corrosive gas environment around chemical plants, traditional concrete products are easily corroded. Corrosion will cause a decrease in the strength of the concrete structure, surface cracks and spalling, etc., seriously affecting its service life and safety. In order to deal with the corrosion problem, additional protective measures usually need to be taken, which not only increases the cost, but may also cause secondary pollution to the environment.

[0006] In addition, the production process of traditional concrete often relies on a large amount of natural resources. For example, the production of cement requires the consumption of a large amount of mineral resources such as limestone. At the same time, the preparation of traditional concrete also generates a large amount of waste, such as waste concrete blocks, etc. The treatment of these wastes is not only difficult, but also occupies a large amount of land resources, causing serious damage to the environment.

[0007] In summary, developing a permeable and corrosion-resistant environmental protection concrete product has become an urgent need in the current field of building materials. It can not only effectively solve the problems of urban waterlogging and concrete corrosion, but also reduce the dependence on natural resources and the generation of waste, achieving the goal of sustainable development. Summary of the Invention

[0008] The object of the present invention is to provide a permeable and corrosion-resistant environmental protection concrete product and its preparation method, so as to solve the problems of poor water permeability, easy corrosion and non-environmental protection of existing concrete products. The concrete product of the present invention has good water permeability, can effectively solve the urban waterlogging problem and improve the urban environmental quality; by adding a corrosion inhibitor, the corrosion resistance of the concrete product is improved, and its service life is extended. At the same time, industrial waste residues such as fly ash and slag powder are used as raw materials, reducing the consumption of natural resources, lowering the production cost, and also reducing the discharge of waste, with good environmental protection benefits; adding reinforcing fibers improves the strength and toughness of the concrete product.

[0009] To achieve the above object, the technical solution adopted by the present invention is as follows: A permeable and corrosion-resistant environmental protection concrete product and its preparation method, the environmental protection concrete product comprises the following components in parts by weight: 80-120 parts of cement, 40-100 parts of fly ash, 50-100 parts of slag powder, 300-500 parts of crushed stone, 400-800 parts of sand, 3-10 parts of water reducing agent, 2-10 parts of reinforcing fiber, 1-8 parts of water permeable agent, 2-15 parts of corrosion inhibitor.

[0010] Preferably, the environmental protection concrete product comprises the following components in parts by weight: 90-110 parts of cement, 50-90 parts of fly ash, 60-90 parts of slag powder, 300-400 parts of crushed stone, 400-600 parts of sand, 4-9 parts of water reducing agent, 3-8 parts of reinforcing fiber, 2-6 parts of water permeable agent, 3-12 parts of corrosion inhibitor.

[0011] Preferably, the environmental protection concrete product comprises the following components in parts by weight: 90-100 parts of cement, 50-70 parts of fly ash, 60-80 parts of slag powder, 300-320 parts of crushed stone, 400-500 parts of sand, 5-7 parts of water reducing agent, 4-8 parts of reinforcing fiber, 3-5 parts of water permeable agent, 4-8 parts of corrosion inhibitor.

[0012] Furthermore, the water reducing agent is one or more of calcium lignosulfonate, melamine resin, amino sulfonic acid polymer and polycarboxylic acid.

[0013] Furthermore, the reinforcing fiber is one or more of glass fiber and polypropylene fiber.

[0014] Furthermore, the water permeable agent is one or more of silicone water permeable agent, sodium methyl silicate and potassium methyl silicate.

[0015] Furthermore, the corrosion inhibitor is one or more of calcium nitrite and silica fume.

[0016] The present invention also provides a preparation method of a permeable and corrosion-resistant environmental protection concrete product, the preparation method comprises the following steps:

[0017] (1) Add cement, fly ash, slag powder, crushed stone, and sand into a mixer and stir evenly.

[0018] (2) Add water reducer, reinforcing fiber, water permeable agent, and corrosion inhibitor into the mixer and continue to stir evenly.

[0019] (3) Pour the stirred concrete mixture into a mold and vibrate it to form a shape.

[0020] (4) Cure the formed concrete products.

[0021] Further, the vibration forming time in step (3) is 1 - 3 minutes.

[0022] Further, the curing time in step (4) is 8 - 12 days.

[0023] The beneficial effects achieved by the present invention with the above structure are as follows: (1) The concrete products of the present invention have good water permeability, can effectively solve the urban waterlogging problem, and improve the urban environmental quality; (2) By adding a corrosion inhibitor, the present invention improves the corrosion resistance of the concrete products and extends their service life; (3) The present invention uses industrial waste residues such as fly ash and slag powder as raw materials, reduces the consumption of natural resources, lowers the production cost, and also reduces the emission of waste, having good environmental protection benefits; (4) By adding reinforcing fiber, the present invention improves the strength and toughness of the concrete products. Description of the Drawings

[0024] Figure 1 The water permeability coefficient of the environmentally friendly concrete products.

[0025] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed Embodiments

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the present invention. The preferred implementation methods and materials described herein are only for illustrative purposes and do not limit the content of this application.

[0028] The experimental methods in the following examples are all conventional methods unless otherwise specified; the test materials and test strains used in the following examples are all obtained from commercial channels unless otherwise specified.

[0029] Example 1

[0030] An environmentally friendly concrete product with water permeability and corrosion resistance and its preparation method

[0031] The environmentally friendly concrete product includes the following components in parts by weight: 90 parts of cement, 50 parts of fly ash, 60 parts of slag powder, 310 parts of gravel, 450 parts of sand, 6 parts of water reducer, 4 parts of reinforcing fiber, 5 parts of water permeable agent, and 8 parts of corrosion inhibitor.

[0032] Among them, the water reducer is one or more of calcium lignosulfonate, melamine resin, amino sulfonic acid polymer, and polycarboxylic acid.

[0033] Among them, the reinforcing fiber is glass fiber; the water permeable agent is an organosilicon water permeable agent; the corrosion inhibitor is calcium nitrite and silica fume.

[0034] The present invention also provides a preparation method of an environmentally friendly concrete product with water permeability and corrosion resistance. The preparation method includes the following steps:

[0035] (1) Add cement, fly ash, slag powder, gravel, and sand to a mixer and stir evenly;

[0036] (2) Add the water reducer, reinforcing fiber, water permeable agent, and corrosion inhibitor to the mixer and continue to stir evenly;

[0037] (3) Pour the stirred concrete mixture into a mold and perform vibration molding;

[0038] (4) Cure the formed concrete product.

[0039] Among them, the vibration molding time in step (3) is 1-3 minutes.

[0040] Among them, the curing time in step (4) is 8-12 days.

[0041] Example 2

[0042] An environmentally friendly concrete product with water permeability and corrosion resistance and its preparation method

[0043] The environmentally friendly concrete product includes the following components in parts by weight: 100 parts of cement, 70 parts of fly ash, 70 parts of slag powder, 320 parts of gravel, 500 parts of sand, 6 parts of water reducer, 6 parts of reinforcing fiber, 4 parts of water permeable agent, and 6 parts of corrosion inhibitor.

[0044] Among them, the reinforcing fiber is glass fiber; the water permeable agent is silicone water permeable agent; the anti-corrosion agent is calcium nitrite and silica fume.

[0045] The present invention also provides a preparation method of a water permeable and anti-corrosive environmental protection concrete product, and the preparation method is carried out with reference to Example 1.

[0046] Example 3

[0047] A water permeable and anti-corrosive environmental protection concrete product and a preparation method thereof

[0048] The environmental protection concrete product comprises the following components in parts by weight: 100 parts of cement, 70 parts of fly ash, 80 parts of slag powder, 310 parts of crushed stone, 400 parts of sand, 7 parts of water reducing agent, 8 parts of reinforcing fiber, 5 parts of water permeable agent, and 8 parts of anti-corrosion agent.

[0049] Among them, the reinforcing fiber is glass fiber; the water permeable agent is silicone water permeable agent; the anti-corrosion agent is calcium nitrite and silica fume.

[0050] The present invention also provides a preparation method of a water permeable and anti-corrosive environmental protection concrete product, and the preparation method is carried out with reference to Example 1.

[0051] Experimental Example 1

[0052] The environmental protection concrete products prepared according to Example 1, Example 2 and Example 3 of the present invention are used as experimental materials, and are divided into groups of Example 1-3, with three replicates in each group. The specimens are placed on a water permeable test device, and a certain amount of water is slowly poured in, and the time required for the water to completely pass through the specimens is recorded, and the water permeability coefficient is calculated.

[0053] Result analysis: As Figure 1 shown, the water permeability coefficient of the group of Example 3 is the highest, followed by the group of Example 2 and the group of Example 1.

[0054] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0055] The above description of the present invention and its embodiments is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An environmentally friendly concrete product with water permeability and corrosion resistance and its preparation method, characterized in that: The environmentally friendly concrete product comprises the following components in parts by weight: 80 - 120 parts of cement, 40 - 100 parts of fly ash, 50 - 100 parts of slag powder, 300 - 500 parts of crushed stone, 400 - 800 parts of sand, 3 - 10 parts of water reducing agent, 2 - 10 parts of reinforcing fiber, 1 - 8 parts of water permeable agent, and 2 - 15 parts of corrosion inhibitor.

2. The permeable and corrosion-resistant environmental protection concrete product according to claim 1 and its preparation method are characterized in that: The environmentally friendly concrete product comprises the following components in parts by weight: 90 - 110 parts of cement, 50 - 90 parts of fly ash, 60 - 90 parts of slag powder, 300 - 400 parts of crushed stone, 400 - 600 parts of sand, 4 - 9 parts of water reducing agent, 3 - 8 parts of reinforcing fiber, 2 - 6 parts of water permeable agent, and 3 - 12 parts of corrosion inhibitor.

3. The environmentally friendly concrete product with water permeability and corrosion resistance according to claim 2 and its preparation method are characterized in that: The environmentally friendly concrete product comprises the following components in parts by weight: 90 - 100 parts of cement, 50 - 70 parts of fly ash, 60 - 80 parts of slag powder, 300 - 320 parts of crushed stone, 400 - 500 parts of sand, 5 - 7 parts of water reducing agent, 4 - 8 parts of reinforcing fiber, 3 - 5 parts of water permeable agent, and 4 - 8 parts of corrosion inhibitor.

4. The environmentally friendly concrete product with water permeability and corrosion resistance according to claim 3 and its preparation method are characterized in that: The water reducing agent is one or more of calcium lignosulfonate, melamine resin, amino sulfonic acid polymer, and polycarboxylic acid.

5. The permeable and corrosion-resistant environmental protection concrete product and its preparation method according to claim 4, characterized in that: The reinforcing fiber is one or more of glass fiber and polypropylene fiber.

6. The permeable and corrosion-resistant environmental protection concrete product and its preparation method according to claim 5, characterized in that: The water permeable agent is one or more of organosilicon water permeable agent, sodium methyl silicate, and potassium methyl silicate.

7. An environmentally friendly concrete product with water permeability and corrosion resistance and its preparation method according to claim 6, characterized in that: The water permeable agent is one or more of organosilicon water permeable agent, sodium methyl silicate, and potassium methyl silicate.

8. A preparation method of the permeable and corrosion-resistant environmental protection concrete product according to claim 7, characterized in that: The preparation method comprises the following steps: (1) Add cement, fly ash, slag powder, crushed stone, and sand into a mixer and stir evenly. (2) Add the water reducing agent, reinforcing fiber, water permeable agent, and corrosion inhibitor into the mixer and continue to stir evenly. (3) Pour the stirred concrete mixture into a mold and perform vibration molding. (4) Cure the formed concrete product.

9. The preparation method of an environmentally friendly concrete product with water permeability and corrosion resistance according to claim 8, characterized in that: The vibration molding time in step (3) is 1 - 3 minutes.

10. The preparation method of an environmentally friendly concrete product with water permeability and corrosion resistance according to claim 9, characterized in that: The curing time in step (4) is 8 - 12 days.

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