High-alkalinity all-solid-waste duct piece mold anti-adhesion coating and prefabrication curing method

Abstract

The invention discloses a high-alkalinity all-solid-waste duct piece mold anti-adhesion coating and a prefabrication curing method, and relates to the technical field of concrete duct piece preparation. The invention comprises fly ash, alkaline filler, fine sand, water and polyethylene fiber, and further comprises a prefabricating and curing method of the high-alkalinity all-solid waste duct piece mold, a steel mold is adopted as the mold of the prefabricating part, and curing is carried out in the environment of 80 DEG C. The curing is carried out according to the following steps that S1, the surface of the steel mold is coated with an isolation layer, and the isolation layer comprises the anti-adhesion coating; s2, the mold is filled with an EGC material, and meanwhile steam curing is conducted in the environment of 80 DEG C; the mold release agent has a good mold release effect with a steel mold, can block the chemical reaction of EGC concrete, and is resistant to high temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete segment preparation, and in particular to a highly alkaline all-solid waste segment mold anti-adhesion coating and a prefabrication and curing method. Background Art

[0002] EGC concrete segments are an application form of high-performance concrete. EGC is a high-performance composite material formed by adding fibers and optimizing the mix design, which has high ductility, good crack control ability and impact resistance. This material performs well in structural engineering, especially in earthquake resistance, impact resistance and durability.

[0003] EGC material has good adhesion to the rigid mold, and EGC material will generate a lot of heat during the molding process. In addition, the components need to be steamed at 80 degrees. Conventional release agents or paraffin will fail in high temperature environments, resulting in sticking to the mold and making demolding difficult. Summary of the invention

[0004] The purpose of the present invention is to provide a high-alkaline all-solid waste pipe segment mold anti-adhesion coating and a prefabrication curing method to achieve a good demoulding effect with a steel mold, block the chemical reaction of EGC concrete and resist high temperature.

[0005] In order to achieve the above effects, the present invention adopts the following technical means: A highly alkaline all-solid waste anti-adhesion coating for a pipe segment mold comprises fly ash, alkaline filler, fine sand, water and polyethylene fiber.

[0006] Preferably, the mixture comprises, by weight, 20 to 50 parts of fly ash, 10 to 20 parts of alkaline filler, 80 to 100 parts of fine sand, 800 to 1000 parts of water and 10 to 15 parts of polyethylene fiber.

[0007] Furthermore, in parts by weight, the fly ash comprises 35 parts, alkaline filler 15 parts, fine sand 90 parts, water 900 parts and polyethylene fiber 13 parts.

[0008] In addition, a method for prefabrication and curing of high-alkaline all-solid waste segment molds is provided, wherein the mold of the prefabricated component is a steel mold, which is cured at 80°C and cured according to the following steps: S1. Coating an insulating layer on the surface of the steel mold, wherein the insulating layer comprises the aforementioned anti-adhesion coating; S2. Fill the mold with EGC material and steam-cure it at 80°C.

[0009] Preferably, the insulating layer includes a first insulating layer and a second insulating layer, the first insulating layer is bonded to the steel mold, the second insulating layer is bonded to the first insulating layer, the second insulating layer is in contact with the EGC material, and the second insulating layer is the aforementioned anti-adhesion coating.

[0010] Furthermore, the first insulating layer is paraffin.

[0011] Furthermore, the step S1 includes first applying paraffin wax in the steel mold, and then applying the second insulating layer after the paraffin wax is cooled and solidified.

[0012] During use, the present invention has the following beneficial effects: Since the mold used for prefabricating the pipe segment components is a steel mold, the EGC material has good adhesion to the steel mold, and the EGC material will generate a lot of heat during the molding process, and the components need to be steamed at 80 degrees. Conventional release agents or paraffin will fail in high temperature environments. Therefore, this application adopts a good isolation medium constructed between the EGC concrete and the steel mold to block the contact between the steel mold and the EGC concrete. A first insulating layer is formed by brushing a layer of paraffin on the surface of the steel mold. After the paraffin solidifies, a layer of anti-adhesion coating composed of fly ash, alkaline filler, fine sand, water and polyethylene fiber is applied, which can fully contact with the paraffin coating and will not detach. At the same time, it can not react with EGC and is resistant to high temperatures. In this way, when demolding is required after curing is completed, the problem of material and steel mold adhesion can be well solved, large-scale application can be achieved, rapid demolding, and mass production can be achieved. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0014] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0016] Example 1 A highly alkaline all-solid waste anti-adhesion coating for a pipe segment mold comprises fly ash, alkaline filler, fine sand, water and polyethylene fiber.

[0017] Specifically, by weight, it includes 20 parts of fly ash, 10 parts of alkaline filler, 80 parts of fine sand, 800 parts of water and 10 parts of polyethylene fiber.

[0018] In addition, a method for prefabrication and curing of a high-alkaline all-solid waste segment mold is provided, wherein the mold of the prefabricated component is a steel mold, which is cured at 80°C and cured according to the following steps: S1. Coating an insulating layer on the surface of the steel mold, wherein the insulating layer comprises the aforementioned anti-adhesion coating; S2. Fill the mold with EGC material and steam-cure it at 80°C.

[0019] Preferably, the insulating layer includes a first insulating layer and a second insulating layer, the first insulating layer is bonded to the steel mold, the second insulating layer is bonded to the first insulating layer, the second insulating layer is in contact with the EGC material, and the second insulating layer is the aforementioned anti-adhesion coating.

[0020] Specifically, the first insulating layer is paraffin.

[0021] Furthermore, the step S1 includes first applying paraffin wax in the steel mold, and then applying the second insulating layer after the paraffin wax is cooled and solidified.

[0022] In this way, since the mold used for prefabricating the pipe segment components is a steel mold, the EGC material has good adhesion to the steel mold, and the EGC material will generate a lot of heat during the molding process, and the components need to be steamed in an environment of 80 degrees. Conventional release agents or paraffin will fail in a high temperature environment. Therefore, this application adopts a good isolation medium constructed between the EGC concrete and the steel mold to block the contact between the steel mold and the EGC concrete. A first insulating layer is formed by brushing a layer of paraffin on the surface of the steel mold. After the paraffin solidifies, a layer of anti-adhesion coating composed of fly ash, alkaline filler, fine sand, water and polyethylene fiber is applied, which can fully contact with the paraffin coating and will not detach, and at the same time can not react with EGC and is resistant to high temperature. In this way, when demolding is required after curing is completed, the problem of material and steel mold adhesion can be well solved, large-scale application can be achieved, rapid demolding, and mass production can be achieved.

[0023] Example 2 A highly alkaline all-solid waste anti-adhesion coating for a pipe segment mold comprises fly ash, alkaline filler, fine sand, water and polyethylene fiber.

[0024] Specifically, by weight, it includes 50 parts of fly ash, 20 parts of alkaline filler, 100 parts of fine sand, 1000 parts of water and 15 parts of polyethylene fiber.

[0025] In addition, a method for prefabrication and curing of a high-alkaline all-solid waste segment mold is provided, wherein the mold of the prefabricated component is a steel mold, which is cured at 80°C and cured according to the following steps: S1. Coating an insulating layer on the surface of the steel mold, wherein the insulating layer comprises the aforementioned anti-adhesion coating; S2. Fill the mold with EGC material and steam-cure it at 80°C.

[0026] Preferably, the insulating layer includes a first insulating layer and a second insulating layer, the first insulating layer is bonded to the steel mold, the second insulating layer is bonded to the first insulating layer, the second insulating layer is in contact with the EGC material, and the second insulating layer is the aforementioned anti-adhesion coating.

[0027] Specifically, the first insulating layer is paraffin.

[0028] Furthermore, the step S1 includes first applying paraffin wax in the steel mold, and then applying the second insulating layer after the paraffin wax is cooled and solidified.

[0029] In this way, since the mold used for prefabricating the pipe segment components is a steel mold, the EGC material has good adhesion to the steel mold, and the EGC material will generate a lot of heat during the molding process, and the components need to be steamed in an environment of 80 degrees. Conventional release agents or paraffin will fail in a high temperature environment. Therefore, this application adopts a good isolation medium constructed between the EGC concrete and the steel mold to block the contact between the steel mold and the EGC concrete. A first insulating layer is formed by brushing a layer of paraffin on the surface of the steel mold. After the paraffin solidifies, a layer of anti-adhesion coating composed of fly ash, alkaline filler, fine sand, water and polyethylene fiber is applied, which can fully contact with the paraffin coating and will not detach, and at the same time can not react with EGC and is resistant to high temperature. In this way, when demolding is required after curing is completed, the problem of material and steel mold adhesion can be well solved, large-scale application can be achieved, rapid demolding, and mass production can be achieved.

[0030] Example 3 A highly alkaline all-solid waste anti-adhesion coating for a pipe segment mold comprises fly ash, alkaline filler, fine sand, water and polyethylene fiber.

[0031] Specifically, by weight, it includes 35 parts of fly ash, 15 parts of alkaline filler, 90 parts of fine sand, 900 parts of water and 13 parts of polyethylene fiber.

[0032] In addition, a method for prefabrication and curing of a high-alkaline all-solid waste segment mold is provided, wherein the mold of the prefabricated component is a steel mold, which is cured at 80°C and cured according to the following steps: S1. Coating an insulating layer on the surface of the steel mold, wherein the insulating layer comprises the aforementioned anti-adhesion coating; S2. Fill the mold with EGC material and steam-cure it at 80°C.

[0033] Preferably, the insulating layer includes a first insulating layer and a second insulating layer, the first insulating layer is bonded to the steel mold, the second insulating layer is bonded to the first insulating layer, the second insulating layer is in contact with the EGC material, and the second insulating layer is the aforementioned anti-adhesion coating.

[0034] Specifically, the first insulating layer is paraffin.

[0035] Furthermore, the step S1 includes first applying paraffin wax in the steel mold, and then applying the second insulating layer after the paraffin wax is cooled and solidified.

[0036] In this way, since the mold used for prefabricating the pipe segment components is a steel mold, the EGC material has good adhesion to the steel mold, and the EGC material will generate a lot of heat during the molding process, and the components need to be steamed in an environment of 80 degrees. Conventional release agents or paraffin will fail in a high temperature environment. Therefore, this application adopts a good isolation medium constructed between the EGC concrete and the steel mold to block the contact between the steel mold and the EGC concrete. A first insulating layer is formed by brushing a layer of paraffin on the surface of the steel mold. After the paraffin solidifies, a layer of anti-adhesion coating composed of fly ash, alkaline filler, fine sand, water and polyethylene fiber is applied, which can fully contact with the paraffin coating and will not detach, and at the same time can not react with EGC and is resistant to high temperature. In this way, when demolding is required after curing is completed, the problem of material and steel mold adhesion can be well solved, large-scale application can be achieved, rapid demolding, and mass production can be achieved.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly alkaline all-solid waste segment mold anti-adhesion coating, characterized in that: It consists of fly ash, alkaline filler, fine sand, water and polyethylene fibers.

2. The highly alkaline all-solid waste segment mold anti-adhesion coating according to claim 1, characterized in that: Calculated by weight, it includes 20-50 parts of fly ash, 10-20 parts of alkaline filler, 80-100 parts of fine sand, 800-1000 parts of water and 10-15 parts of polyethylene fiber.

3. The highly alkaline all-solid waste segment mold anti-adhesion coating according to claim 2, characterized in that: By weight, it includes 35 parts of fly ash, 15 parts of alkaline filler, 90 parts of fine sand, 900 parts of water and 13 parts of polyethylene fiber.

4. A method for prefabrication and curing of highly alkaline all-solid waste segment molds, characterized in that: The molds for prefabricated components are made of steel molds, which are cured at 80°C and cured according to the following steps: S1. Coating an insulating layer on the surface of the steel mold, wherein the insulating layer comprises the anti-adhesion coating according to any one of claims 1 to 3; S2. Fill the mold with EGC material and steam-cure it at 80°C.

5. A method for prefabrication and curing of highly alkaline all-solid waste segment molds according to claim 4, characterized in that: The insulating layer includes a first insulating layer and a second insulating layer, the first insulating layer is bonded to the steel mold, the second insulating layer is bonded to the first insulating layer, and the second insulating layer is in contact with the EGC material, and the second insulating layer is the anti-adhesion coating according to any one of claims 1 to 3.

6. A method for prefabrication and curing of highly alkaline all-solid waste segment molds according to claim 5, characterized in that: The first insulating layer is paraffin.

7. A method for prefabrication and curing of highly alkaline all-solid waste segment molds according to claim 6, characterized in that: The step S1 includes first applying paraffin wax in the steel mold, and then applying the second insulating layer after the paraffin wax is cooled and solidified.