Cement waste incineration fly ash cementing solid waste negative carbon baking-free building block

Abstract

The invention provides a cement waste incineration fly ash cementing solid waste negative carbon baking-free building block, and relates to the technical field of baking-free building blocks. The cement waste incineration fly ash cementing solid waste negative carbon baking-free building block is prepared from the following components in parts by weight: 30 to 40 parts of building solid waste, 30 to 35 parts of waste incineration fly ash, 35 to 40 parts of cement, 10 to 13 parts of compacting agent, 20 to 25 parts of fluorocarbon resin, 5 to 7 parts of steel fiber and 40 to 50 parts of water, the compacting agent is any one of an organic silicon compacting agent and a crystal permeable compacting agent. The surface of the baking-free building block is coated with fluorocarbon resin, the fluorocarbon resin reacts with moisture and oxygen in the air to form a protective film, a layer of uniform and compact protective film can be formed on the surface of the baking-free building block, so that permeation of moisture and other liquid is prevented, in addition, the fluorocarbon resin has extremely high resistance to corrosive substances such as acid, alkali and salt, and the baking-free building block has the advantages that the baking-free building block is not prone to cracking. Acid rain can be effectively handled, and the water resistance of the baking-free building block is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of non-burning building blocks, in particular to a cement waste incineration fly ash cemented solid waste carbon-negative non-burning building block. BACKGROUND

[0002] The non-burning building block is a building block material which is formed by physical or chemical consolidation without high-temperature sintering. Compared with the traditional sintered brick, the non-burning building block has the advantages of energy saving, environmental protection and waste utilization, and is an important development direction of green building materials.

[0003] The existing non-burning building block has the following defects in use, that is, poor water resistance: the water absorption of part of the non-burning building block is high, and the strength may be affected in a long-term humid environment. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the defects of the prior art, the application provides a cement waste incineration fly ash cemented solid waste carbon-negative non-burning building block, which solves the problem of poor water resistance of the existing non-burning building block.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the application is implemented by the following technical scheme: a cement waste incineration fly ash cemented solid waste carbon-negative non-burning building block, which is composed of the following components in parts by weight: 30-40 parts of building solid waste material, 30-35 parts of waste incineration fly ash, 35-40 parts of cement, 10-13 parts of compacting agent, 20-25 parts of fluorocarbon resin, 5-7 parts of steel fiber and 40-50 parts of water.

[0008] Preferably, the building solid waste material is building concrete waste.

[0009] Preferably, the compacting agent is any one of an organic silicon compacting agent and a crystalline penetration type compacting agent.

[0010] A preparation process of a cement waste incineration fly ash cemented solid waste carbon-negative non-burning building block, comprising the following specific steps:

[0011] S1, first, the building solid waste material is crushed into powder by using a crushing device, and is screened by using a screen until all the building solid waste material is qualified;

[0012] S2, the building solid waste material powder obtained in S1, waste incineration fly ash, cement, water reducing agent, compacting agent, steel fiber and water are poured into a mixing fusion device and uniformly mixed;

[0013] S3, the mixed material is forged or vibrated to form, and is pre-cured and then carbon-cured.

[0014] S4, using a sand blasting machine to spray the surface of the cured free-burning block in S3 to increase the roughness of the free-burning block;

[0015] S5, evenly applying fluorocarbon resin on the surface of the free-burning block, and placing the coated free-burning block in a drying oven for drying to obtain a negative carbon free-burning block.

[0016] Preferably, the crushing treatment time in S1 is 20-30 minutes, and the mesh number of the screen is 300-400 meshes.

[0017] Preferably, the pre-curing time is 5-7 days, and during carbon curing, the CO2 concentration is 65-90%, the pressure is 0.1-0.4 MPa, the temperature is 25-42℃, the humidity is 65-80%, and the time is 5-5.5 hours.

[0018] Preferably, the drying temperature in S5 is 60-80℃, and the time is 2-4 hours.

[0019] (III) Beneficial effects

[0020] The application provides a cement waste incineration fly ash cemented solid waste negative carbon free-burning block.

[0021] 1. In the application, fluorocarbon resin is applied on the surface of the free-burning block, and the fluorocarbon resin reacts with moisture and oxygen in the air to form a protective film, which can form a uniform and dense protective film on the surface of the free-burning block, thereby preventing the penetration of moisture and other liquids. In addition, fluorocarbon resin has strong resistance to acid, alkali, salt and other corrosive substances, and can effectively deal with acid rain, thereby improving the water resistance of the free-burning block.

[0022] 2. In the application, the addition of steel fibers and the use of densifying agent can effectively improve the overall strength of the free-burning block and prevent cracks in the free-burning block. In addition, the use of a sand blasting machine for sand blasting treatment of the surface of the free-burning block during preparation is beneficial to changing the mechanical properties of the surface of the free-burning block, increasing its hardness, improving its fatigue resistance, and prolonging its service life.

[0023] 3. In the application, the use of a sand blasting machine for sand blasting treatment of the surface of the free-burning block during preparation can also remove dirt, rust, oil stains and other impurities on the surface of the free-burning block, ensuring the cleanliness of the surface. In addition, sand blasting treatment can form a certain roughness on the surface of the free-burning block, which helps to increase the surface area and improve the adhesion of the coating or adhesive, reducing the risk of fluorocarbon resin layer falling off. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0025] Embodiment one:

[0026] The cement waste incineration fly ash cemented solid waste carbon-free baking block provided by the embodiment of the present application comprises the following components in parts by weight: 40 parts of building solid waste, 35 parts of waste incineration fly ash, 40 parts of cement, 13 parts of a densifying agent, 20 parts of fluorocarbon resin, 7 parts of steel fiber, and 50 parts of water.

[0027] The densifying agent and the steel fiber can effectively improve the overall strength of the baking-free block and avoid cracks in the baking-free block. The use of fluorocarbon resin forms a protective film by reacting with moisture and oxygen in the air, which can form a uniform and dense protective film on the surface of the baking-free block, thereby preventing the penetration of moisture and other liquids. In addition, fluorocarbon resin has strong resistance to acid, alkali, salt and other corrosive substances, and can effectively deal with acid rain, thereby improving the water resistance of the baking-free block.

[0028] The building solid waste is building concrete waste, and the densifying agent is any one of an organic silicon densifying agent and a crystalline penetrating densifying agent. The crystalline penetrating densifying agent is preferably used.

[0029] A cement waste incineration fly ash cemented solid waste carbon-free baking block preparation process comprises the following specific steps:

[0030] S1. First, use a crushing device to crush the building solid waste into powder, and use a screen to screen the building solid waste until all the building solid waste is qualified.

[0031] S2. Pour the building solid waste powder obtained in S1, waste incineration fly ash, cement, water reducing agent, densifying agent, steel fiber, and water into a mixing and fusion device and mix them evenly.

[0032] S3. The mixed material is forged or vibrated to form a block, which is then pre-cured and carbon-cured (which is prior art, and the application number is CN202310662326.X, so it will not be described here).

[0033] S4. Use a sandblasting machine to spray the surface of the baking-free block cured in S3 to increase the roughness of the baking-free block.

[0034] During the preparation process, the surface of the unfired blocks is sandblasted with a sandblasting machine, which is beneficial to changing the mechanical properties of the surface of the unfired blocks, increasing their hardness, improving fatigue resistance, and extending their service life. It can also remove dirt, rust, oil and other impurities on the surface of the unfired blocks to ensure the surface is clean. In addition, sandblasting will form a certain degree of roughness on the surface of the unfired blocks. This roughness helps to increase the surface area, improve the adhesion of the coating or adhesive, and reduce the risk of fluorocarbon resin layer falling off.

[0035] S5. Evenly apply fluorocarbon resin on the surface of the unfired building block, and place the applied unfired building block in a drying oven for drying to obtain a negative carbon unfired building block.

[0036] The pulverization time in S1 is 30 minutes, the mesh size of the screen is 300 mesh, the pre-curing time is 5 days, and during carbon curing, the CO2 concentration is 70%, the pressure is 0.4 MPa, the temperature is 42°C, the humidity is 72%, and the time is 5 hours. The drying temperature in S5 is 60°C and the time is 3 hours.

[0037] Example 2:

[0038] An embodiment of the present invention provides a cement waste incineration fly ash-bonded solid waste negative carbon-free burning block, which includes the following components in parts by weight: 40 parts of construction solid waste, 35 parts of waste incineration fly ash, 40 parts of cement, 13 parts of a densifier, 22 parts of a fluorocarbon resin, 7 parts of steel fiber and 50 parts of water.

[0039] The construction solid waste is construction concrete waste, and the densifier is any one of an organosilicon densifier and a crystalline penetrating densifier. In this application, the crystalline penetrating densifier is preferably used.

[0040] A process for preparing solid waste negative carbon-free burning blocks bonded with fly ash from cement waste incineration comprises the following specific steps:

[0041] S1. First, use crushing equipment to crush the construction solid waste into powder, and then use a screen to screen it until all the construction solid waste is qualified;

[0042] S2. Pour the construction solid waste powder, waste incineration fly ash, cement, water reducing agent, densifying agent, steel fiber and water obtained in S1 into a mixing and fusion vessel and mix them evenly;

[0043] S3. Forging or vibrating the mixture into shape, pre-curing it first, and then carbon curing it;

[0044] S4, using a sandblasting machine to spray the surface of the unfired blocks cured in S3 to increase the roughness of the unfired blocks;

[0045] S5, evenly apply fluorocarbon resin on the surface of the unfired building block, and place the applied unfired building block in a drying box for drying to obtain the negative carbon unfired building block.

[0046] The time for the crushing treatment in S1 is 30 minutes, the mesh number of the screen is 300 meshes, the pre-curing time is 5 days, the CO2 concentration is 70%, the pressure is 0.4 MPa, the temperature is 42°C, the humidity is 72%, and the time is 5 hours during carbon curing, and the drying temperature in S5 is 60°C, and the time is 3 hours.

[0047] Example Three

[0048] The cement waste incineration fly ash cemented solid waste negative carbon unfired building block provided by the embodiment of the application comprises the following components in parts by weight: 40 parts of building solid waste, 35 parts of waste incineration fly ash, 40 parts of cement, 13 parts of compacting agent, 25 parts of fluorocarbon resin, 7 parts of steel fiber, and 50 parts of water.

[0049] The building solid waste is building concrete waste, and the compacting agent is any one of an organic silicon compacting agent and a crystalline penetration type compacting agent, and the crystalline penetration type compacting agent is preferably selected.

[0050] A cement waste incineration fly ash cemented solid waste negative carbon unfired building block preparation process comprises the following specific steps.

[0051] S1, first, crush the building solid waste into powder using a crushing device, and perform screening treatment using a screen until all the building solid waste is qualified;

[0052] S2, mix the building solid waste powder obtained in S1, waste incineration fly ash, cement, water reducing agent, compacting agent, steel fiber, and water in a mixing and fusing device to mix uniformly;

[0053] S3, forge or vibrate the mixed material to form, first pre-cure, and then carbon cure;

[0054] S4, use a sandblasting machine to spray the surface of the unfired building block cured in S3 to increase the roughness of the unfired building block;

[0055] S5, evenly apply fluorocarbon resin on the surface of the unfired building block, and place the applied unfired building block in a drying box for drying to obtain the negative carbon unfired building block.

[0056] The time for the crushing treatment in S1 is 30 minutes, the mesh number of the screen is 300 meshes, the pre-curing time is 5 days, the CO2 concentration is 70%, the pressure is 0.4 MPa, the temperature is 42°C, the humidity is 72%, and the time is 5 hours during carbon curing, and the drying temperature in S5 is 60°C, and the time is 3 hours.

[0057] Comparative Example

[0058] Compared with Example 1, Example 2 and Example 3, no fluorocarbon resin is added in the raw materials in the present example, and no S4 and S5 are used in the preparation process, and the other conditions are the same as those in Example 1, Example 2 and Example 3.

[0059] The preparation of the unfired building blocks is carried out in the manner of Example 1, Example 2, Example 3 and Comparative Example, and the prepared unfired building blocks are subjected to water resistance test. The test steps are as follows: the four prepared unfired building blocks are respectively placed in containers with the same volume, the containers are provided with scales, and the liquid level is observed after 2-3 days of placement. The test results are shown in Table 1:

[0060] Table 1

[0061]

[0062] It can be known from the data in Table 1 that the water resistance of the unfired building blocks without fluorocarbon resin is relatively poor. Therefore, the use of fluorocarbon resin can improve the water resistance of the unfired building blocks.

[0063] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cement waste incineration fly ash cemented solid waste negative carbon non-burning building block, characterized by: The composition comprises the following parts by weight: 30-40 parts of construction solid waste, 30-35 parts of waste incineration fly ash, 35-40 parts of cement, 10-13 parts of densifier, 20-25 parts of fluorocarbon resin, 5-7 parts of steel fiber and 40-50 parts of water.

2. The cement waste incineration fly ash cemented solid waste negative carbon non-burning building block according to claim 1, characterized in that: The construction solid waste is construction concrete waste.

3. The cement waste incineration fly ash cemented solid waste negative carbon non-burning building block according to claim 1, characterized in that: The densifier is any one of an organosilicon densifier and a crystal penetrating densifier.

4. A process for preparing a cement waste incineration fly ash-cemented solid waste negative carbon non-fired building block, according to any one of claims 1 to 3, characterized in that: The specific steps include: S1. First, use crushing equipment to crush the construction solid waste into powder, and then use a screen to screen it until all the construction solid waste is qualified; S2. Pour the construction solid waste powder, waste incineration fly ash, cement, water reducing agent, densifying agent, steel fiber and water obtained in S1 into a mixing and fusion vessel and mix them evenly; S3. Forging or vibrating the mixture into shape, pre-curing it first, and then carbon curing it; S4, using a sandblasting machine to spray the surface of the unfired blocks cured in S3 to increase the roughness of the unfired blocks; S5. Evenly apply fluorocarbon resin on the surface of the unfired building block, and place the applied unfired building block in a drying oven for drying to obtain a negative carbon unfired building block.

5. The process for preparing a cement waste incineration fly ash-cemented solid waste negative carbon-free burning building block according to claim 4, characterized in that: The pulverization process in S1 lasts for 20-30 minutes, and the mesh size of the sieve is 300-400 meshes.

6. The process for preparing a cement waste incineration fly ash-cemented solid waste negative carbon-free burning blocks according to claim 4, characterized in that: The pre-curing time is 5-7 days. During carbon curing, the CO2 concentration is 65-90%, the pressure is 0.1-0.4 MPa, the temperature is 25-42°C, the humidity is 65-80%, and the time is 5-5.5 hours.

7. The process for preparing a cement waste incineration fly ash-cemented solid waste negative carbon unburned building block according to claim 4, characterized in that: The drying temperature in S5 is 60-80° C. and the drying time is 2-4 hours.

Images