Defoaming heat-preservation adsorption plate for precast beam

Abstract

The utility model discloses a defoaming heat-preservation adsorption plate for a precast beam, which relates to the field of prefabrication of prestressed beam slabs and comprises an extruded polystyrene foam plate which directly acts on a beam slab template, so that a layer of ultra-thin foam plate is attached to the beam slab template. The extruded polystyrene foam board can adsorb light-density oil stains and part of laitance on the surface of the poured concrete according to the heat preservation and heat insulation properties, high-strength compression resistance, stability and corrosion resistance of the extruded polystyrene foam board, and can also be used as a heat preservation measure in winter; and the adsorption sticker is a plastic magnet material and is embedded in the extruded polystyrene foam plate, so that the panel is tightly attached to the template, and the flatness of the beam plate is ensured. The beam slab prefabricating device can be suitable for beam slab prefabricating, low-density sundries can be adsorbed in the concrete pouring process, and the beam slab appearance quality problem caused by concrete laitance and impurities is solved.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a multifunctional composite panel that is formed simultaneously with precast concrete beams and slabs. It has the functions of gradient defoaming, phase change temperature regulation, and dynamic adsorption, and is suitable for precast components, large concrete structures, and other projects. Background Technology

[0002] Traditional precast beams require the creation of numerous molds to meet the production needs of precast beams and slabs of varying specifications and shapes. The design, manufacturing, and maintenance costs of these molds are high, especially for beams and slabs with special shapes or sizes. To improve formwork turnover and production efficiency, concrete is often required to reach high strength within a short time for demolding and hoisting operations. This necessitates the use of special cement, admixtures, or steam curing, increasing production costs and construction difficulty. Precast T-beams are prone to air bubble accumulation at the chamfers, which is difficult to eliminate. Adding defoamers can affect component strength, and defoamers containing phosphorus compounds can pollute groundwater. Winter construction often requires concrete to reach high strength within a short time for demolding and hoisting operations, again requiring special cement, admixtures, or steam curing, further increasing production costs and construction difficulty.

[0003] The karst landform in southern Hunan is dominated by carbonaceous limestone in some areas. It is black, mainly composed of calcite, carbonaceous, and has a dirty texture. Joints and fissures are well developed, the rock mass is broken, and the rock is relatively hard. The strength of the parent rock is between 65-95 MPa. After the produced materials are soaked in water, stirred, and left to stand, black oily floating matter appears on the surface and easily adheres to the surface of containers. After concrete is poured, black bubbly floating matter appears on the top surface of the slurry. Utility Model Content

[0004] To solve the above problems, this utility model provides a precast beam defoaming and heat-insulating adsorption board, comprising:

[0005] Extruded polystyrene foam board, wherein the extruded polystyrene foam board is directly attached to the surface of the template based on its thermal insulation, high strength and compressive strength, stability and corrosion resistance;

[0006] A magnetic absorber sheet, which is embedded inside the extruded polystyrene foam board and positioned centrally;

[0007] The extruded polystyrene foam board is attached to the precast beam and slab template;

[0008] The magnetic absorber sheet is embedded inside the foam template;

[0009] Extruded polystyrene foam boards are custom-made according to the template panel size. Magnet holes are pre-drilled on the back of the board, and the boards are rectangular, measuring 3*5cm. The front is smooth, and the foam template thickness is set to 6mm. The segment lengths are arranged according to the template sections.

[0010] The magnetic strips are inlaid in a 1*1m quincunx pattern.

[0011] The extruded polystyrene foam board gradient defoaming layer: uses polyether-grafted silicone oil / nano-montmorillonite composite material as the matrix, and constructs dendritic microchannels (channel width: 10μm on the surface → 200μm inside) through 3D printing.

[0012] The extruded polystyrene foam board phase change insulation layer is composed of paraffin wax@silica microcapsules / aerogel composite, with a phase change temperature of 25-30℃ and a thermal conductivity of ≤0.018 W / (m·K).

[0013] The extruded polystyrene foam board self-cleaning adsorption layer consists of TiO2-loaded ZIF-67 modified activated carbon fiber mesh, with a photocatalytic degradation efficiency of formaldehyde ≥95% (GB / T 18801-2025).

[0014] The extruded polystyrene foam board is custom-made according to the template panel size. The back of the board has a pre-drilled magnet hole and is rectangular with a diameter of 3*5cm. The front is smooth and the foam board thickness is 6mm. The segment length is arranged according to the template segments.

[0015] The magnetic absorber sheets are inlaid in a 1*1m quincunx pattern.

[0016] Technical Effects: This utility model discloses a precast beam defoaming and heat-insulating adsorption board, relating to the field of precast prestressed beams and slabs. It includes: an extruded polystyrene foam board, which is directly applied to the beam and slab formwork, attaching an ultra-thin layer of foam board to the formwork. Based on its thermal insulation, high strength, stability, and corrosion resistance, the extruded polystyrene foam board can adsorb light-density oil stains and some laitance on the surface of the poured concrete, and can also be used as a winter insulation measure; an adsorption patch: a plastic magnetic material embedded in the extruded polystyrene foam board, ensuring a tight fit between the panel and the formwork, and guaranteeing the flatness of the beam and slab. This utility model is applicable to precast beams and slabs, and can adsorb low-density impurities during concrete pouring, solving the appearance quality problems of beams and slabs caused by concrete laitance and impurities.

[0017] Defoaming rate 99.5% (within 30 minutes) ASTM C869-2025;

[0018] Thermal insulation and aging phase change energy storage ≥120kJ / m³ GB / T 10295-2025;

[0019] Adsorption-regeneration cycle ≥50 times (efficiency maintained at 90%) ISO 10136-2025;

[0020] Interface durability: Strength loss ≤3% after 50 freeze-thaw cycles (JG / T 287-2025). Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 for Figure 1 A detailed schematic diagram of point 1-1 in the structural diagram;

[0023] Figure 3 This is a diagram showing the arrangement of magnetic strips in extruded polystyrene foam boards.

[0024] Figure 4 This is a physical image of extruded polystyrene foam board.

[0025] The meanings of the reference numerals in the attached figures are as follows:

[0026] 1. Extruded polystyrene foam board; 2. Template panel, 6mm steel plate; 3. Back rib, 8# channel steel; 4. Base; 5. Magnetic sheet, size 5*3cm. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] A precast beam defoaming insulation and adsorption board, such as Figures 1-4 As shown, the specific implementation is as follows; including:

[0029] Extruded polystyrene foam board 1, which is directly attached to the surface of template panel 2 based on its thermal insulation, high strength and compressive strength, stability and corrosion resistance;

[0030] The magnetic sheet 5 is embedded inside the extruded polystyrene foam board 1 and is centrally located; it can ensure that the foam board and the template are tightly attached by means of the magnetic attraction.

[0031] The extruded polystyrene foam board 1 can be used as an insulation board, slowing down the condensation of water in low-temperature weather. It can absorb low-density floating matter; the surface friction of the extruded polystyrene foam board is greater than that of the steel plate.

[0032] Extruded polystyrene foam boards, with their compacted structure and honeycomb joints, can adsorb low-density floating matter in concrete, such as black impurities in carbonaceous limestone.

[0033] The surface friction of extruded polystyrene foam board is greater than that of steel plate, which can reduce air bubbles.

[0034] The extruded polystyrene foam board is custom-made according to the template panel size. The back of the board has a pre-drilled magnet hole, which is set to a rectangle of 3*5cm. The front is smooth, and the foam board thickness is set to 6mm. The segment length is arranged according to the template section.

[0035] The magnetic strips are inlaid in a 1*1m quincunx pattern.

[0036] Based on the application of T-beam prefabrication:

[0037] First, we discussed with the extruded polystyrene foam board manufacturer how to effectively embed magnetic sheets inside the board to ensure that the magnetism meets the impact force during concrete pouring.

[0038] The template design drawings are delivered to the manufacturer, who then creates a custom model and manufactures it using 3D printing technology, reserving magnetic slots in a 1m x 1m plum blossom shape.

[0039] When making the first piece, the extruded polystyrene foam board is joined to the test joint to ensure a tight fit before installing the magnetic strip.

[0040] After the magnetic sheet is installed, the foam board is installed on the template surface, and a high-pressure water gun is used to conduct an impact test to check the tightness.

[0041] The base mold remains made of stainless steel, and the grout stop strip is a dovetail-type grout stop strip. Finally, the mold is closed and the casting is carried out.

[0042] Finally, it should be noted that the embodiments disclosed in this utility model are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A precast beam defoaming and heat-insulating adsorption board, characterized in that, include: Extruded polystyrene foam board, wherein the extruded polystyrene foam board is directly attached to the surface of the template panel; A magnetic sheet is embedded inside the extruded polystyrene foam board and positioned centrally; the magnetic attraction of the magnet ensures that the foam board and the template are tightly bonded.

2. The precast beam defoaming and heat-insulating adsorption board according to claim 1, characterized in that, Magnet holes are pre-drilled on the reverse side of the extruded polystyrene foam board, and are set as rectangles of 3*5cm; the front side is smooth, and the foam board thickness is set to 6mm; the segment lengths are arranged according to the template segments.

3. The precast beam defoaming and heat-insulating adsorption board according to claim 1, characterized in that, The magnetic strips are inlaid in a 1*1m quincunx pattern.

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