Production method of GRC material for special-shaped explosion vent wall

Abstract

The application is suitable for the technical field of GRC material, and provides a special-shaped explosion vent wall GRC material production method, which comprises the following operation steps: S1, preparing materials: preparing cement, sand and water, wherein the cement and the sand are distributed according to a proportion; S2, mixing and stirring: the cement and the sand in S1 are poured into the inside of a stirring device to be mixed and stirred; S3, mortar shaping: during the stirring process, the water is slowly added and stirred until the mortar reaches a uniform slurry state. The special-shaped explosion vent wall GRC material production method rapidly completes the connection between different parts and the glass fiber reinforced cement wallboard and the embedded iron part by rolling and compacting the overall material in the mold using a large roller before initial setting, and then using a small roller to modify and fully compact the details, so that the bubbles in the glass fiber reinforced cement wallboard are better discharged.

Description

Technical Field

[0001] This invention belongs to the field of GRC material technology, and in particular relates to a method for producing GRC material for explosion-proof walls with a special shape. Background Technology

[0002] Explosion relief walls are divided into two types: lightweight pressure relief walls and lightweight fragile walls. As a pressure relief facility, the lightweight wall is a device that instantly releases critical pressure to relieve the pressure of an indoor combustion explosion. Its main applications are in the petrochemical and coal mining industries, as well as in gas fire extinguishing protection zones. The wall's connectors are made of galvanized steel and connected with self-tapping screws. The explosion relief plate is top-suspended, with a stainless steel hinge at the upper rotation point and the explosion relief device at the lower connection point. The plate is edged with painted steel, and the frame is rainproof.

[0003] Explosion-relief walls are suitable for hazardous production workshops requiring explosion venting. Lightweight pressure-relief walls are used in production workshops prone to dust and gas explosions; lightweight, fragile walls are used in workshops containing high-energy explosives. Lightweight pressure-relief walls are available in two types: rock wool sandwich panel walls and single-layer profiled steel composite insulation walls. Lightweight, fragile walls are available in three types: fiber-reinforced cement board walls, expanded stone lightweight panel walls, and foamed concrete composite wall panels.

[0004] GRC stands for Glass Fiber Reinforced Concrete. GRC is a fiber-reinforced concrete composite material that uses alkali-resistant glass fiber as the reinforcing material and cement mortar as the matrix material. GRC is a material that allows designers to express their imagination through mold shaping, texture, feel and color.

[0005] GRC molds include cement molds, fiberglass molds, wooden molds, silicone molds, and steel molds. GRC steel molds offer the best surface finish and dimensional accuracy. Current production methods for specially shaped explosion-proof GRC wall materials have certain drawbacks. When mixing cement mortar and glass fiber, vibration is used to remove air bubbles. This method is effective at removing large air bubbles but less effective at removing small and micro-bubbles. Furthermore, vibration affects the uniformity of the sprayed material, which is detrimental to the production of specially shaped explosion-proof GRC wall materials and can easily reduce the quality of the finished product. Summary of the Invention

[0006] This invention provides a method for producing GRC (Glass Reinforced Concrete) materials for explosion venting walls with special shapes. It aims to solve the problems that traditional vibration methods are ineffective in removing small and micro air bubbles, and that vibration affects the uniformity of spraying, which is not conducive to the production of GRC materials for explosion venting walls with special shapes.

[0007] This invention is achieved through a method for producing a specially shaped explosion-proof wall GRC material, comprising the following steps:

[0008] S1. Prepare materials: Prepare cement, sand and clean water, with cement and sand mixed in the correct proportions;

[0009] S2. Mixing and stirring: Pour the cement and sand from S1 into the mixing device and mix them together.

[0010] S3. Mortar forming: During the mixing process, slowly add water while stirring until the mortar reaches a uniform slurry state.

[0011] S4. Mold assembly: Clean the inner wall of the specially shaped explosion relief wall mold, check whether the mold size meets the accuracy standard, check whether the mold is deformed, and then assemble the mold.

[0012] S5. Mold oiling: Apply release oil to the contact surface between the mold and the GRC material;

[0013] S6, GRC material production: Spray glass fiber into the mold cavity with a glass fiber spray gun, and then spray cement mortar evenly into the mold cavity to make the glass fiber and cement mortar evenly mixed.

[0014] S7. Material setting: Before the initial setting begins, use a large roller to roll and compact the entire material inside the mold, and then use a small roller to refine and fully compact the details, quickly completing the connection between different parts and the glass fiber reinforced cement wall panel and the embedded iron parts. After completion, wait for setting.

[0015] S8. Mold Demolding: During demolding, the GRC material must have uniform support points. After demolding, the specially shaped explosion-proof wall should immediately enter the curing area for appropriate curing.

[0016] Preferably, in S1, the ratio of cement to sand is typically 1:3.

[0017] Preferably, in step S2, the stirring device is a grinding wheel machine.

[0018] Preferably, in step S3, the amount of clean water should be appropriate, and the process should be stopped immediately when the mortar reaches a uniform slurry state.

[0019] Preferably, in step S6, the thickness of each layer of glass fiber sprayed is 4-5 mm, and the thickness of each layer of cement mortar sprayed is 4-5 mm.

[0020] Preferably, in step S6, each layer is rolled with a roller to expel air bubbles and compact to increase density, and the spraying method is an alternating horizontal and vertical spraying operation.

[0021] Preferably, in step S5, the inner wall of the mold is coated with release oil at least twice, and each application of release oil must completely cover the inner wall of the mold.

[0022] Preferably, in step S8, appropriate hoisting tools are used during demolding to prevent damage to the specially shaped explosion-proof wall.

[0023] Preferably, in step S4, the selected mold needs to be a mold with a structure that facilitates demolding.

[0024] Preferably, in step S8, if the GRC material is damaged and peels off during demolding, and the damaged area has bubbles and honeycombs with a diameter exceeding 2 mm, it should be repaired and smoothed. The cement mortar used for repair must have the same cement mortar ratio as the GRC material.

[0025] Beneficial effects

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: The production method of GRC material for a special-shaped explosion vent wall of the present invention, before the initial setting begins, uses a large pressure roller to roll and compact the overall material inside the mold, and then uses a small pressure roller to refine the details and fully compact them, quickly completing the connection between different continuous parts and the connection between the glass fiber reinforced cement wall panel and the embedded iron parts. This method effectively releases and discharges air bubbles inside the glass fiber reinforced cement wall panel, and quickly refines and fully compacts the details, avoiding weakening of the connection of the explosion vent wall later, improving the service life and strength stability of the finished special-shaped explosion vent wall, replacing the traditional vibration method for air bubble removal, and eliminating the need for mold displacement during the material feeding process, thus facilitating the mold feeding operation, improving the uniformity of material feeding, and ultimately improving the quality of the finished special-shaped explosion vent wall. Attached Figure Description

[0027] Figure 1 This is a flowchart illustrating the production method of the GRC material for the explosion-venting wall with a special shape according to the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] Please see Figure 1 This invention provides a technical solution: a method for producing a specially shaped explosion-proof wall GRC material, comprising the following steps:

[0030] S1. Prepare materials: Prepare cement, sand and clean water, with cement and sand mixed in the correct proportions;

[0031] S2. Mixing and stirring: Pour the cement and sand from S1 into the mixing device and mix them together.

[0032] S3. Mortar forming: During the mixing process, slowly add water while stirring until the mortar reaches a uniform slurry state.

[0033] S4. Mold assembly: Clean the inner wall of the specially shaped explosion relief wall mold, check whether the mold size meets the accuracy standard, check whether the mold is deformed, and then assemble the mold.

[0034] S5. Mold oiling: Apply release oil to the contact surface between the mold and the GRC material;

[0035] S6, GRC material production: Spray glass fiber into the mold cavity with a glass fiber spray gun, and then spray cement mortar evenly into the mold cavity to make the glass fiber and cement mortar evenly mixed.

[0036] S7. Material setting: Before the initial setting begins, use a large roller to roll and compact the entire material inside the mold, and then use a small roller to refine and fully compact the details, quickly completing the connection between different parts and the glass fiber reinforced cement wall panel and the embedded iron parts. After completion, wait for setting.

[0037] S8. Mold Demolding: When demolding, the GRC material must have uniform support points. After demolding, the specially shaped explosion vent wall should immediately enter the curing area for proper curing.

[0038] Explosion relief walls are divided into two types: lightweight pressure relief walls and lightweight fragile walls. As a pressure relief device, the lightweight wall is a device that can instantly release the critical pressure of an explosion that is provided for a closed combustion explosion.

[0039] The main applications are pressure relief in explosive areas and gas fire protection zones in the petrochemical and coal mining industries. The explosion relief wall connectors are made of galvanized steel and connected by self-tapping screws. The explosion relief plate is top-suspended, with a stainless steel hinge at the upper rotation point and an explosion relief device at the lower connection point. The plate is surrounded by steel painted edging, and the frame is a rainproof frame.

[0040] Explosion-relief walls are suitable for hazardous production workshops requiring explosion venting. Lightweight pressure-relief walls are used in production workshops prone to dust and gas explosions; lightweight, fragile walls are used in workshops containing high-energy explosives. Lightweight pressure-relief walls are available in two types: rock wool sandwich panel walls and single-layer profiled steel composite insulation walls. Lightweight, fragile walls are available in three types: fiber-reinforced cement board walls, expanded stone lightweight panel walls, and foamed concrete composite wall panels.

[0041] GRC stands for Glass Fiber Reinforced Concrete. GRC is a fiber-reinforced concrete composite material that uses alkali-resistant glass fiber as the reinforcing material and cement mortar as the matrix material. GRC is a material that allows designers to express their imagination through mold shaping, texture, feel and color.

[0042] GRC molds include cement molds, fiberglass molds, wooden molds, silicone molds, and steel molds. GRC steel molds offer the best surface finish and dimensional accuracy.

[0043] Before the initial setting begins, a large roller is used to roll and compact the entire material inside the mold, and then a small roller is used to refine the details and fully compact them. This quickly completes the connection between different parts and the glass fiber reinforced cement wall panel and the embedded iron parts, and effectively releases and discharges air bubbles inside the glass fiber reinforced cement wall panel.

[0044] Quickly refine the details and fully compact them to prevent the connection of the explosion vent wall from weakening later, thereby improving the service life and strength stability of the finished special-shaped explosion vent wall.

[0045] The vibration method replaces the traditional method of removing air bubbles. The mold does not need to be moved during the feeding process, which facilitates the feeding operation of the mold, improves the uniformity of feeding, and thus improves the quality of the special-shaped explosion-proof wall in the final product.

[0046] Furthermore, in S1, the ratio of cement to sand is typically 1:3.

[0047] Furthermore, in S2, the stirring device is a grinding wheel machine.

[0048] Furthermore, in step S3, the amount of clean water used should be appropriate, and the process should be stopped immediately when the mortar reaches a uniform slurry state.

[0049] The amount of water used should be appropriate; too much water will cause the mortar to be too fluid, while too little water will affect the quality of the mortar.

[0050] Furthermore, in S6, the thickness of each layer of glass fiber sprayed is 4-5 mm, and the thickness of each layer of cement mortar sprayed is 4-5 mm.

[0051] Furthermore, in S6, each layer is rolled with a roller to expel air bubbles and compact to increase density, and the spraying method is an alternating horizontal and vertical spraying operation.

[0052] The spraying method uses alternating horizontal and vertical spraying operations to improve the uniformity of material feeding inside the mold, thereby improving the quality of the finished product in the later stages.

[0053] Furthermore, in S5, the inner wall of the mold is coated with release oil at least twice, and each application of release oil must completely cover the inner wall of the mold.

[0054] Furthermore, in step S8, during demolding, appropriate hoisting tools are used to prevent damage to the specially shaped explosion-proof wall.

[0055] Furthermore, in step S4, the selected mold needs to be a mold with a structure that facilitates demolding.

[0056] Furthermore, in S8, if the GRC material is damaged and peels off during demolding, and the damaged area has bubbles and honeycombs with a diameter exceeding 2 mm, it should be repaired and smoothed. The cement mortar used for repair must have the same cement mortar ratio as the GRC material.

[0057] The working principle and usage process of this invention are as follows: Before the initial setting begins, a large pressure roller is used to roll and compact the overall material inside the mold. Then, a small pressure roller is used to refine the details and fully compact them. This quickly completes the connection between different continuous parts and the connection between the glass fiber reinforced cement wall panel and the embedded iron parts. It effectively releases and discharges air bubbles inside the glass fiber reinforced cement wall panel, and quickly refines and fully compacts the details, preventing the weakening of the connection of the explosion relief wall in the later stage. This improves the service life and strength stability of the finished special-shaped explosion relief wall, replacing the traditional vibration method for air bubble removal. During the material feeding process, the mold does not need to be moved, which facilitates the mold feeding operation, improves the uniformity of material feeding, and thus improves the quality of the finished special-shaped explosion relief wall.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for producing GRC material for a specially shaped explosion-proof wall, characterized in that: The following steps are included: S1. Prepare materials: Prepare cement, sand and clean water, with cement and sand mixed in the correct proportions; S2. Mixing and stirring: Pour the cement and sand from S1 into the mixing device and mix them together. S3. Mortar forming: During the mixing process, slowly add water while stirring until the mortar reaches a uniform slurry state. S4. Mold assembly: Clean the inner wall of the specially shaped explosion relief wall mold, check whether the mold size meets the accuracy standard, check whether the mold is deformed, and then assemble the mold. S5. Mold oiling: Apply release oil to the contact surface between the mold and the GRC material; S6, GRC material production: Spray glass fiber into the mold cavity with a glass fiber spray gun, and then spray cement mortar evenly into the mold cavity to make the glass fiber and cement mortar evenly mixed. S7. Material setting: Before the initial setting begins, use a large roller to roll and compact the entire material inside the mold, and then use a small roller to refine and fully compact the details, quickly completing the connection between different parts and the glass fiber reinforced cement wall panel and the embedded iron parts. After completion, wait for setting. S8. Mold Demolding: When demolding, the GRC material must have uniform support points. After demolding, the specially shaped explosion vent wall should immediately enter the curing area for proper curing. In S5, the inner wall of the mold should be coated with release oil at least twice, and each application of release oil should completely cover the inner wall of the mold. In step S8, during demolding, appropriate hoisting tools are used to prevent damage to the specially shaped explosion-proof wall; In step S4, the selected mold needs to be a mold with a structure that facilitates demolding. In S8, if the GRC material is damaged and peels off during demolding, and the damaged area has air bubbles and honeycombs with a diameter of more than 2 mm, it should be repaired and smoothed. The cement mortar used for repair must have the same cement mortar ratio as the GRC material.

2. The method for producing a specially shaped explosion-venting wall GRC material as described in claim 1, characterized in that: In S1, the ratio of cement to sand is typically 1:

3.

3. The method for producing a specially shaped explosion-venting wall GRC material as described in claim 1, characterized in that: In S2, the stirring device is a grinding wheel machine.

4. The method for producing a specially shaped explosion-venting wall GRC material as described in claim 1, characterized in that: In step S3, the amount of clean water should be appropriate, and the process should be stopped immediately when the mortar reaches a uniform slurry state.

5. The method for producing a specially shaped explosion-venting wall GRC material as described in claim 1, characterized in that: In S6, the thickness of each layer of glass fiber sprayed is 4~5mm, and the thickness of each layer of cement mortar sprayed is 4~5mm.

6. The method for producing a specially shaped explosion-venting wall GRC material as described in claim 1, characterized in that: In step S6, each layer is rolled with a roller to expel air bubbles and compact the layer to increase density. The spraying method involves alternating horizontal and vertical spraying operations.

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