Inflatable shape-adjustable composite maintenance tarpaulin

Abstract

The utility model discloses an inflatable shape-adjustable composite maintenance tarpaulin. The composite maintenance tarpaulin comprises a fireproof surface layer, a heat insulation layer, an inflatable shape-adjustable layer, a puncture-proof layer and a moisturizing substrate layer which are sequentially laminated and compounded from top to bottom through an adhesive, a plurality of air chambers are arranged in the inflatable shape-adjusting layer, the air chambers are sequentially communicated through one-way valves, the air chambers located at the two ends are provided with an air inlet connector and an air outlet connector respectively, and valves are arranged at the positions of the air inlet connector and the air outlet connector. The concrete curing device can ensure the curing effect, and can meet the requirement for concrete curing in a cold region or under the extreme heating power condition.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete curing devices. More specifically, this utility model relates to an inflatable and shape-adjustable composite curing tarpaulin. Background Technology

[0002] In the construction of large-scale concrete structures, facade curing technology has always been an industry-wide technical challenge restricting project quality. In the early stages of hydration reaction of fresh concrete, the unstable thermal properties of the surface covering layer and insufficient efficiency of the humidity maintenance system easily lead to plastic shrinkage cracks and temperature stress cracks, resulting in durability defects such as delayed compressive strength growth and excessive carbonation depth, posing significant risks to construction quality control and schedule management. Current facade curing processes mainly include: geotextile covering combined with intermittent watering, mobile constant temperature and humidity curing chambers, atomized spraying systems, and the application of film-forming curing agents. High-density fiber cloth combined with timed watering remains the conventional method, but it suffers from low efficiency, large fluctuations in thermal conductivity, and high dispersion in humidity control. Under alternating negative and negative temperature conditions, it is more prone to excessive surface temperature gradients and localized drying shrinkage cracks. While curing chamber systems can maintain a stable microenvironment (temperature control accuracy ±3℃, humidity ≥95%), they suffer from high equipment amortization costs and poor adaptability to working surfaces. When used in cold regions, atomization systems are limited by ambient temperature (freezing risk ≥60% at T<5℃), and poor sealing performance leads to significant fog loss at high altitudes. Film-forming materials also lack resistance to extreme weather conditions (retention rate ≤70% after heavy rain washout, failure after 3 freeze-thaw cycles at -15℃). Therefore, existing technologies lack specific solutions for extreme thermal conditions (daily temperature difference ≥20℃ or continuous high temperatures >40℃), limiting the applicable areas of the process. Utility Model Content

[0003] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0004] To achieve these objectives and other advantages according to this utility model, an inflatable and shape-adjustable composite maintenance tarpaulin is provided. The composite maintenance tarpaulin includes, from top to bottom, a fireproof surface layer, a heat insulation layer, an inflatable and shape-adjustable layer, a puncture-resistant layer, and a moisture-retaining base layer, which are laminated together by an adhesive. The inflatable and shape-adjustable layer has multiple air chambers, each of which is connected in sequence by a one-way valve. The air chambers at both ends are respectively provided with an air inlet and an air outlet, and valves are provided at both the air inlet and the air outlet.

[0005] Preferably, the fireproof surface layer is silicone rubber fiberglass cloth or aluminum foil composite fiberglass cloth, and the thickness of the fireproof surface layer is 0.8-1.5mm.

[0006] Preferably, the heat insulation layer is an aluminum silicate needled blanket with a thickness of 5-10 mm.

[0007] Preferably, the inflatable shaping layer is a TPU airbag, which is internally divided into multiple air chambers; the area of ​​each air chamber is no greater than 0.3m².

[0008] Preferably, the stab-resistant layer is a polyethylene stab-resistant fabric.

[0009] Preferably, the moisturizing base layer is an aramid spunlace nonwoven fabric, and the roughening treatment depth of the side in contact with the concrete is 0.3-0.5 mm.

[0010] Preferably, the adhesive is a polyurethane adhesive.

[0011] Preferably, the fireproof surface layer, the heat insulation layer, the air-filled shaping layer, the puncture-resistant layer, and the moisture-retaining base layer are stitched together as one piece using quilting.

[0012] Preferably, it also includes a plurality of stainless steel buttonholes spaced along the outer periphery of the composite curing tarpaulin.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. The inflatable and shape-adjustable composite curing tarpaulin provided by this utility model can make the moisturizing base layer fit tightly with the concrete surface through the inflatable and shape-adjustable layer, making it difficult for airflow to enter and ensuring the curing effect; and by introducing gases of different temperatures into each air chamber, it can adapt to the concrete curing needs under cold or extreme heat conditions.

[0015] 2. The inflatable and shape-adjustable composite curing tarpaulin provided by this utility model is further reinforced by quilting on the basis of lamination and composite, which can effectively improve the peel strength and meet the working conditions of high-altitude and strong winds.

[0016] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the composite curing tarpaulin described in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the air chamber described in this utility model;

[0019] Figure 3 This is a schematic diagram of the quilting thread described in this utility model. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0021] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figures 1 to 3 As shown, this utility model provides an inflatable and shape-adjustable composite maintenance tarpaulin. The composite maintenance tarpaulin includes, from top to bottom, a fireproof surface layer 1, a heat insulation layer 2, an inflatable and shape-adjustable layer 3, a puncture-resistant layer 4, and a moisture-retaining base layer 5, which are laminated together by an adhesive. The inflatable and shape-adjustable layer 3 has multiple air chambers 31, and each air chamber 31 is connected in sequence by a one-way valve. The air chambers at both ends are respectively provided with an air inlet and an air outlet. Valves are provided at both the air inlet and the air outlet.

[0023] In this technical solution, the moisturizing base layer 5 faces the concrete surface to be cured during use to maintain moisture. The outermost fireproof surface layer 1 provides fire protection to meet high-altitude fire protection requirements. The heat insulation layer 2 provides insulation to meet the curing needs of cold regions. The inflatable shaping layer 3 can eliminate gaps between the tarpaulin and the concrete by filling each air chamber 31 with air or water; it can also meet the curing temperature requirements by continuously introducing high-temperature gas. Adjacent air chambers 31 are connected by a one-way valve, so even if a single air chamber is damaged, it will not affect the overall effect. Although the air chambers 31 are unidirectionally connected, they are not limited to being arranged in a row; for example... Figure 2 As shown, the air chambers 31 are arranged in a matrix within the inflation shaping layer 3, and the airflow within the inflation shaping layer follows an S-shaped or N-shaped pattern. A transverse connecting flow path can also be provided between the two rows of air chambers 31 containing the air inlet and exhaust ports to further improve inflation and exhaust efficiency. The puncture-resistant layer 4 provides protection for the inflation shaping layer 3, preventing the air chambers 31 from being punctured. The above five-layer structure is laminated with an adhesive to form the composite curing tarpaulin with a flexible sheet-like structure.

[0024] After the concrete formwork is removed, the composite curing tarpaulin is quickly placed in position. Water is replenished to the moisture-retaining base layer 5 through an external water supply device until it is saturated. The inflation device is then connected to the air inlet, and the valve at the exhaust port is closed. Inflation begins and stops when the pressure reaches 10-15 kPa. When the ambient temperature is low, and the temperature difference between the concrete surface and the environment exceeds 20°C, high-temperature gas can be continuously introduced into the inflatable shaping layer 3. The air inlet temperature can be adjusted by monitoring the temperature difference between the concrete surface and the environment. After curing, the composite curing tarpaulin is deflated and the system is ready for the next stage of curing.

[0025] In another technical solution, the fireproof surface layer 1 is made of silicone rubber fiberglass cloth or aluminum foil composite fiberglass cloth, and the thickness of the fireproof surface layer 1 is 0.8-1.5mm. The fireproof surface layer 1 allows the entire tarpaulin to withstand a 1000℃ flame for 30 seconds without melting through.

[0026] In another technical solution, the thermal insulation layer 2 is an aluminum silicate needled blanket with a thickness of 5-10 mm. Aluminum silicate needled blankets possess characteristics such as chemical stability, thermal stability, and low thermal conductivity, providing excellent thermal insulation properties.

[0027] In another technical solution, the inflatable shaping layer 3 is a TPU airbag, which is internally divided into multiple air chambers 31; the area of ​​each air chamber 31 is no greater than 0.3 m². Multiple air chambers 31 are formed inside the TPU airbag by setting partitions or directly using adhesives, and flow channels are formed between adjacent air chambers 31 according to the airflow direction, with a one-way valve provided. The TPU airbag has high elasticity, high tear strength, and abrasion resistance, and maintains good flexibility at low temperatures and stable performance at high temperatures.

[0028] In another technical solution, the stab-resistant layer 4 is a polyethylene stab-resistant fabric. The polyethylene stab-resistant fabric is lightweight, wear-resistant, cut-resistant, and stab-resistant, protecting the inflatable shaping layer 3 from punctures, while also exhibiting good adhesion to the moisturizing base layer 5.

[0029] In another technical solution, the moisturizing base layer 5 is an aramid spunlace nonwoven fabric, and the surface in contact with the concrete has a roughening treatment depth of 0.3-0.5 mm. After roughening treatment, the surface of the moisturizing base layer 5 can form water-retaining micropores with a porosity ≥40%. The aramid spunlace nonwoven fabric can slowly release moisture, extending the moisturizing effect to more than 72 hours.

[0030] In another technical solution, the adhesive is a polyurethane adhesive. The layers of the composite curing tarpaulin are laminated together using polyurethane adhesive, specifically through hot pressing at 120-150℃.

[0031] In another technical solution, the fireproof surface layer 1, the heat insulation layer 2, the inflatable shaping layer 3, the puncture-resistant layer 4, and the moisture-retaining base layer 5 are stitched together using quilted thread 6. After lamination and molding, each layer of the composite protective tarpaulin is reinforced with quilted thread 6 to enhance the structural stability of the tarpaulin during turnover and use. The quilted thread 6 is carbon fiber reinforced polyester thread with a tensile strength ≥800N / cm. (Refer to...) Figure 3 The quilting lines 6 include outer quilting lines arranged around the perimeter of the composite curing tarpaulin and inner quilting lines arranged crisscrossingly inside the outer quilting lines. Care must be taken to avoid the air chambers 31 during the processing of the inner quilting lines. The interval between two adjacent inner quilting lines, either longitudinally or laterally, is 10–20 cm.

[0032] In another technical solution, a plurality of stainless steel eyelets 7 are also provided at intervals along the outer periphery of the composite curing tarpaulin. Multiple pieces of the composite curing tarpaulin can be spliced ​​together using the stainless steel eyelets 7 to meet the needs of large-area concrete curing; the composite curing tarpaulin can also be fixed by connecting it to an external anchoring structure using the stainless steel eyelets 7.

[0033] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An inflatable and shape-adjustable composite maintenance tarpaulin, characterized in that, The composite maintenance tarpaulin includes, from top to bottom, a fireproof surface layer, a heat insulation layer, an inflatable shaping layer, a puncture-resistant layer, and a moisture-retaining base layer, which are laminated together by an adhesive. The inflatable shaping layer has multiple air chambers, which are connected in sequence by one-way valves. The air chambers at both ends are provided with an air inlet and an air outlet, and valves are provided at both the air inlet and the air outlet.

2. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The fireproof surface layer is made of silicone rubber fiberglass cloth or aluminum foil composite fiberglass cloth, and the thickness of the fireproof surface layer is 0.8-1.5mm.

3. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The heat insulation layer is an aluminum silicate needled blanket with a thickness of 5-10mm.

4. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The inflatable shaping layer is a TPU airbag, which is divided into multiple air chambers; the area of ​​each air chamber is no greater than 0.3m².

5. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The stab-resistant layer is made of polyethylene stab-resistant fabric.

6. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The moisturizing base layer is an aramid spunlace nonwoven fabric, and the surface in contact with the concrete has a roughening treatment depth of 0.3-0.5 mm.

7. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The adhesive is a polyurethane adhesive.

8. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, The fireproof surface layer, the heat insulation layer, the inflatable shaping layer, the puncture-resistant layer, and the moisturizing base layer are stitched together as one piece using quilting.

9. The inflatable and shape-adjustable composite maintenance tarpaulin as described in claim 1, characterized in that, It also includes a plurality of stainless steel buttonholes spaced along the outer periphery of the composite curing tarpaulin.

Images