Manufacturing method of light ultra-high performance concrete hollow exterior trimming panel

Abstract

The invention relates to the technical field of concrete structure decoration, in particular to a manufacturing method of a light ultra-high performance concrete hollowed-out exterior trimming panel, a concrete base and a silica gel mold are arranged, the silica gel mold is supported on the concrete base, a stepped groove matched with the light ultra-high performance concrete hollowed-out exterior trimming panel is formed in the silica gel mold, and the light ultra-high performance concrete hollowed-out exterior trimming panel is arranged in the stepped groove. Foam strips and embedded sleeves are arranged at local positions in the stepped grooves in the silica gel mold; through the combination of the concrete base, the silica gel mold, the wood foam strip positioner and the wood embedded sleeve positioner, pouring of the light ultra-high performance concrete hollow exterior trimming panel is achieved in the silica gel mold. The invention has the advantages that: the prefabricated UHPC is used as the outer decorative plate, so that the durability is better, and the service life is longer; due to the hydrophobic property, the finished product is more resistant to dirt and better in color and texture effect; the mold cost is reduced by fully utilizing the characteristics of various materials; the perfect surface decoration effect is achieved, the cost and the weight are reduced, and the transportation and construction difficulty is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete structure decoration, in particular to a light-weight super high-performance concrete hollow outer decorative plate manufacturing method, and particularly to a modeling design, a template manufacturing, a component manufacturing process, a surface treatment method and a simple construction method of a special-shaped super high-performance concrete outer decorative plate. BACKGROUND

[0002] Ordinary exposed concrete outer decorative panel is heavy in weight, which brings great difficulty to hoisting construction, and cannot meet the requirement of large tensile stress of specific projects. In order to facilitate connection construction, pre-embedded steel components (such as square tubes and corner codes) are generally used for outer hanging construction of the decorative panel, which is complex in construction and heavy in weight.

[0003] Although the alloy outer decorative panel is light in weight, it is easy to deform and rust, and the decorative effect is poor compared with concrete. Welding and other construction are not suitable for projects with tight schedules.

[0004] Super high-performance concrete (UHPC) provides the possibility for manufacturing thin-walled, hollow, hollow, special-shaped decorative components due to its ultra-high strength and excellent fluidity. The ultra-high durability, hydrophobicity, good color and texture effect make it the first choice for updating the outer decorative panel; The precast UHPC decorative panel has high structural requirements, and the structural design, mechanical calculation and process method need to be studied. When the component is poured, shrinkage cracks are easily generated. The requirements for the mold are correspondingly increased, and the number and quality of the mold greatly increase the cost.

[0005] The existing technology has the following technical problems when manufacturing precast assembled UHPC outer decorative panels: (1) The existing exposed brick concrete hanging panel is too heavy in quality, which increases the cost and the difficulty of transportation and installation. In order to achieve the purpose of light weight, the structure and pouring method of the outer decorative panel need to be further designed; (2) The UHPC decorative surface displayed outward has high aesthetic requirements, but thin-walled UHPC is prone to shrinkage cracks and small bubbles, which affects the finished product effect of the precast decorative panel; (3) The precast component structure shape precision and surface texture requirement is high, so the mold requirement is correspondingly increased, and the production cost is increased; at the same time, standard unit division is needed to achieve the decorative effect of the whole wall while reducing the types of molds; (4) In some scenes, the precast component surface has unique texture and color requirements, and needs to avoid the influence of concrete alkali return on the decorative surface, so a set of UHPC hollow precast decorative panel production and surface treatment process and method need to be established. SUMMARY

[0006] The application aims at providing a light-weighted super high-performance concrete hollow outer decorative plate manufacturing method according to the deficiencies of the prior art.

[0007] The application is achieved by the following technical scheme: A light-weighted super high-performance concrete hollow outer decorative plate manufacturing method, characterized in that the manufacturing method comprises the following steps: A concrete base and a silica gel mold are arranged, the silica gel mold is supported on the concrete base, a stepped groove matched with the light-weighted super high-performance concrete hollow outer decorative plate is arranged in the silica gel mold, the stepped groove is arranged along the plane of the silica gel mold and extends from one side to the other side; A foam strip is arranged at a local position in the stepped groove in the silica gel mold, the foam strip is fixed in the silica gel mold by a wooden foam strip locator, and the wooden foam strip locator is connected with the concrete base; A wooden embedded sleeve locator is arranged at a local position in the stepped groove in the silica gel mold, the wooden embedded sleeve locator is connected with the concrete base, and the embedded sleeve locator is used for embedding an embedded sleeve in the light-weighted super high-performance concrete hollow outer decorative plate with pouring; The pouring of the light-weighted super high-performance concrete hollow outer decorative plate in the silica gel mold is realized by the combination of the concrete base, the silica gel mold, the wooden foam strip locator and the wooden embedded sleeve locator.

[0008] The foam strip and the foam strip locator are sequentially installed after 1 / 3 of the pouring in the silica gel mold is completed, and the pouring is continued until completion after the installation is completed.

[0009] The embedded sleeve is performed after the pouring is completed.

[0010] The silica gel mold is formed by wood fine carving standard structure prototype mold turning.

[0011] After 24 hours of pouring, the formwork is removed, the wooden foam strip locator and the wooden embedded sleeve locator are removed, the silica gel mold and the finished product of the light-weighted super high-performance concrete hollow outer decorative plate are lifted together, are separated from the concrete base, and then the silica gel mold is peeled off.

[0012] The application has the following advantages: (1) The prefabricated UHPC is used as an outer veneer plate, has better durability, and has a longer service life; due to its hydrophobic property, the finished product is more resistant to dirt, and the color and texture effect are also better.

[0013] (2) The complete mold of "concrete base + silica gel mold + wooden embedded part positioner" is used to fully utilize the characteristics of various materials and reduce the mold cost; the perfect surface decoration effect is realized, the front is hollowed out, and the back is hollowed out, thereby reducing the cost and weight, and greatly reducing the transportation and construction difficulty.

[0014] (3) The special multi-layer surface treatment process meets the requirements of unique texture and color of the surface, and avoids the influence of concrete back alkali on the decorative surface.

[0015] (4) Steam curing is carried out immediately after demolding, which can quickly improve the strength of UHPC and further reduce the shrinkage of UHPC in the later period, and reduce the risk of cracking of the component.

[0016] (5) Steam curing greatly shortens the curing time and improves the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the prefabricated hollow brick wall plate in the application; Figure 2 is a perspective structural schematic view of the prefabricated hollow brick wall plate in the application; Figure 3 is a front view of a standard unit of the prefabricated hollow brick wall plate in the application; Figure 4 is a back view of a standard unit of the prefabricated hollow brick wall plate in the application; Figure 5 is a structural schematic view of the combined mold in the application; Figure 6 is a structural schematic view of the combined mold in the application. DETAILED DESCRIPTION

[0018] The features and other related features of the application will be further described in detail below by combining the drawings through embodiments, so as to facilitate the understanding of the skilled in the art: As shown in Figures 1-6 , the marks in the figure represent: lightweight super high performance concrete hollow outer veneer plate 1, vertical keel 2, standard unit 3, hollow part 4, silica gel mold 5, foam strip 6, wooden foam strip positioner 7, wooden embedded sleeve positioner 8, concrete base 9.

[0019] Embodiment: As shown in Figures 1 to 6 , the lightweight super high performance concrete hollow outer veneer plate manufacturing method in the embodiment includes the following steps: (1) Carve out the standard structure prototype, and form the silica gel mold 5 by liquid silica gel reverse molding.

[0020] As shown in Figure 1 and Figure 2 , the light-weight super high-performance concrete hollow outer decorative plate 1 in the embodiment achieves the decoration effect of the whole wall by combination, reduces the types of molds, and beautifies the visual effect; adjacent standard units 3 are directly overlapped without connecting pieces, and the back is fixed through vertical keels 2. As shown in Figure 3 and Figure 4 , the standard unit 3 has a hollow part, which adopts a structure of hollowing out the front face and processing the back as a hollow, thereby reducing the self-weight and realizing light weight and high strength.

[0021] (2) Make the concrete base 9 and the wooden positioner, which includes the wooden foam strip positioner 7 and the wooden embedded sleeve positioner 8. Combine them into a complete set of "concrete base-silica gel mold-wooden positioner" molds.

[0022] In the embodiment, the concrete base 9 is adopted, which has the characteristics of large stiffness, not easy to deform, used for base, good support performance, large volume, low price, and good economy. The silica gel mold 5 has small stiffness, high dimensional accuracy, convenient reverse molding, and can guarantee the surface effect and size requirements of the prefabricated component. Meanwhile, the silica gel mold 5 and the concrete base 9 with large stiffness and small dimensional accuracy work together to further improve the manufacturing quality of the prefabricated component. The wooden positioner is easy to process, convenient to install and disassemble, and convenient for frequent installation and disassembly.

[0023] (3) Use white cotton cloth with diluent to scrub the silica gel mold 5 to ensure that the surface of the silica gel mold 5 is free of stains and foreign matter.

[0024] (4) Apply vaseline: wear clean gloves and apply vaseline on the concrete base 9 under the silica gel mold 5, and apply it completely on all sides.

[0025] (5) Apply release agent: wear clean gloves, dip the cloth in water-based release agent, and evenly apply it to the inner side of the silica gel mold 5 to avoid staining the silica gel mold 5.

[0026] (6) Stir the super high-performance concrete and pour it.

[0027] (7) Install the foam strip 6 and the wooden foam strip positioner 7. The foam strip 6 is installed at the designed position in the silica gel mold 2, corresponding to the hollow part 4 of the standard unit 3, and the wooden foam strip positioner 7 is used to fix the position of the foam strip 6 in the silica gel mold 2. The wooden foam positioner 7 is connected and fixed with the concrete base 9 through the wooden strip arranged on the side of the concrete base 9. After about 1 / 3 of the super high-performance concrete mixture is poured, install the foam strip 6 and the corresponding wooden foam positioner 7 in sequence.

[0028] (8) Install the embedded sleeve and wooden embedded sleeve locator 8: Continue to pour the super high performance concrete mixture until completion, then install the embedded sleeve which is positioned by the wooden embedded sleeve locator 8, which is also connected by setting wooden strips on the side of the concrete base 9.

[0029] (9) After all the pouring work is completed, immediately spray the surface of the poured member and cover it with a curing film.

[0030] (10) After 24 hours of pouring, remove the formwork, remove the wooden foam strip locator 7 and the wooden embedded sleeve locator 8, first lift the silicone and the finished product together, separate it from the concrete base 9, then peel off the silicone mold 2. Check the surface defects after demolding, and immediately move into the steam curing shed after confirming that there is no error. Immediately cover the steam curing shed and perform steam curing.

[0031] (11) After the steam curing is completed, wait for the surface of the member to dry, then proceed to the surface treatment.

[0032] (12) The UHPC hollow brick wall panel is subjected to four layers of surface treatment, namely, primer spraying, drum roughening, color paint spraying, and polyurethane finish spraying, to ensure that the color, texture, and visual quality of the member meet the requirements, and the back alkali will not affect the surface decoration effect.

[0033] Although the above embodiments have been described in detail with reference to the accompanying drawings for the purpose of illustrating the concepts and embodiments of the present application, those of ordinary skill in the art can recognize that various improvements and changes can be made to the present application without departing from the scope defined by the claims, and therefore, detailed description is not given here.

Claims

1. A method for manufacturing a lightweight super high performance concrete hollow exterior panel, characterized in that: The manufacturing method comprises the following steps: setting a concrete base and a silica gel mold, the silica gel mold is supported on the concrete base, a stepped groove matched with the light-weight ultra-high performance concrete hollow outer veneer is arranged in the silica gel mold, the stepped groove is arranged along the plane of the silica gel mold and extends from one side to the other side; foam strips are arranged at local positions in the stepped groove in the silica gel mold, the foam strips are fixed in the silica gel mold by wooden foam strip locators, the wooden foam strip locators are connected with the concrete base; wooden embedded sleeve locators are arranged at local positions in the stepped groove in the silica gel mold, the wooden embedded sleeve locators are connected with the concrete base, the embedded sleeve locators are used for embedding embedded sleeves in the light-weight ultra-high performance concrete hollow outer veneer during pouring; the pouring of the light-weight ultra-high performance concrete hollow outer veneer in the silica gel mold is realized by the combination of the concrete base, the silica gel mold and the wooden foam strip locators and the wooden embedded sleeve locators.

2. The method for manufacturing a light-weight, ultra-high performance concrete hollowed-out exterior veneer panel according to claim 1, characterized in that: The foam strips and the foam strip locators are sequentially installed in order after 1 / 3 of the pouring in the silica gel mold is completed; after the installation is completed, the pouring is continued until the pouring is completed.

3. The method for manufacturing a light-weight, ultra-high performance concrete hollowed-out exterior veneer panel according to claim 1, characterized in that: The embedded sleeves are processed after the pouring is completed.

4. The method for manufacturing a light-weight, ultra-high performance concrete hollowed-out exterior veneer panel according to claim 1, characterized in that: The silica gel mold is formed by wooden fine carving standard structure prototype turning.

5. The method for manufacturing a light-weight, ultra-high performance concrete hollow exterior panel according to claim 1, characterized in that: After 24 hours of the pouring, the mold is removed, the wooden foam strip locators and the wooden embedded sleeve locators are removed, the silica gel mold and the finished product of the light-weight ultra-high performance concrete hollow outer veneer are lifted together, the silica gel mold and the finished product of the light-weight ultra-high performance concrete hollow outer veneer are separated from the concrete base, and then the silica gel mold is peeled off.

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