UHPC (Ultra High Performance Concrete) blocking mold and mold casting method thereof

Abstract

The invention discloses a UHPC (Ultra High Performance Concrete) blocking mold and a mold casting method thereof. The UHPC blocking mold comprises a UHPC mold, a limiting pressing block and a longitudinal blocking strip, a UHPC mold body is a rectangular modeling plate, modeling lines are arranged on the surface of the modeling plate, a mold frame enclosure of a square frame structure is arranged on the periphery of the modeling plate, a longitudinal barrier strip is arranged in the UHPC mold and is parallel to the short edge of the UHPC mold, the end of the longitudinal barrier strip is attached to the inner edge of the mold frame, and the number of the limiting pressing blocks is at least one set. The guide rail is arranged in the UHPC mold and is in contact with the side surface of the longitudinal barrier strip; the method has the beneficial effects that the mold manufacturing cost and time are reduced, and the UHPC production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of UHPC casting molds, and in particular relates to a UHPC retaining mold and a mold making method thereof. Background Art

[0002] UHPC (Ultra High Performance Concrete) is a high-performance concrete with excellent strength, durability and crack resistance, so it is widely used in the production of building components. However, there are some problems in the production of some simple UHPC flat products (such as UHPC decorative panels for exterior walls). For example, each specification of UHPC requires a separate production of matching molds, the large number of molds leads to high production costs, and the long mold production cycle leads to low production efficiency. Therefore, a low-cost and high-efficiency component production method is needed to meet the production needs of UHPC of different specifications. Summary of the invention

[0003] The object of the present invention is to provide a UHPC retaining mold and a mold making method thereof to solve the technical problems mentioned in the above background technology.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A UHPC retaining mold and a mold-making method thereof, comprising: a UHPC mold, a limiting pressure block, and a longitudinal retaining bar; the UHPC mold body is a rectangular molding plate, the molding plate surface is provided with molding patterns, the outer periphery of the molding plate is provided with a mold frame enclosure with a square frame structure, a longitudinal retaining bar is provided in the UHPC mold, the longitudinal retaining bar is parallel to the short side of the UHPC mold, and the end of the longitudinal retaining bar is in contact with the inner side of the mold frame, and the number of the limiting pressure block is at least one group, which is placed in the UHPC mold and contacts the side of the longitudinal retaining bar.

[0006] Further: In order to enable the UHPC mold to adjust both the molding width and the molding length, a retractable transverse baffle is provided on one side of the longitudinal baffle, and the transverse baffle includes an inner tube, an outer covering plate, an inner embedding strip, an inner embedding groove, a first fitting surface, and a second fitting panel; wherein the inner tube is a square tube structure, an inner embedding strip with an inverted trapezoidal structure in longitudinal section is provided on the top of the inner tube, an inner embedding groove that slidably fits with the inner embedding strip is provided below the outer covering plate with a strip-like structure, one end of the outer covering plate is vertically connected downwardly to a second fitting panel with a plate-like structure, and a side of the inner tube close to the second fitting panel is the first fitting surface; the inner side of the second fitting panel is fitted with the first fitting surface.

[0007] Furthermore: in order to prevent the transverse baffle from causing too large an appearance error to the finished UHPC mold, the thickness of the second bonding panel, that is, the spacing between the outer side surfaces of the first bonding surface and the second bonding panel, is controlled between 0.6 mm and 1 mm. That is to say, when the transverse baffle is involved in mold building, the error of the side surface of the finished UHPC mold close to the transverse baffle is only 0.6 mm to 1 mm in height. This error can be ignored after the subsequent seaming or caulking after the installation of the finished UHPC mold, and will not affect the aesthetics and neatness of the finished UHPC mold.

[0008] Furthermore: in order to facilitate the storage of the transverse baffle when it is not in use and avoid the loss of the transverse baffle, a receiving groove that can accommodate the contracted transverse baffle is opened on the top of the longitudinal baffle, and the transverse baffle is embedded in the receiving groove when not in use.

[0009] Furthermore: in order to facilitate accurate adjustment of the size of the casting mold during mold building, a horizontal scale is provided on the long side of the mold frame, and a vertical scale is provided on the short side of the mold frame.

[0010] Further: A UHPC mold making method comprises the following steps:

[0011] Step S1, cleaning the mold: cleaning the inside of the UHPC mold, cleaning the molding patterns of the molding plate, and preventing the particle impurities on the molding plate from affecting the surface texture;

[0012] Step S2, applying a release agent: applying a release agent on the surface of the molding plate of the UHPC mold and the vertical inner side of the mold frame to more effectively demold without damaging the product;

[0013] Step S3, mold blocking: according to the required plate size, longitudinal blocking bars or transverse blocking bars or both are used to form a cofferdam inside the UHPC mold into a required area and shape. The total length of the inner tube and the outer covering plate can be adjusted by pulling the inner tube and the outer covering plate in the transverse blocking bar to make them fit the position of the longitudinal blocking bar;

[0014] Step S4, grouting: mix the UHPC premix and pour it inside the cofferdam formed by the longitudinal baffle or the transverse baffle. The UHPC premix is ​​a self-leveling material, so the UHPC premix is ​​naturally leveled. In order to speed up the leveling rate, tools can be used to assist in spreading the material.

[0015] Step S5, air-drying and curing: Cover the top surface of the UHPC mold with a tarp to allow the UHPC premix to dry naturally; both air-drying and demoulding curing must meet the UHPC curing standard strength requirements, and early demoulding, transportation, and construction are not allowed;

[0016] Step S6, demoulding: demoulding after standing to reach the curing strength;

[0017] Step S7, edge cutting and grinding: after using the longitudinal baffles and the transverse baffles, there will be burrs after demoulding, which requires edge cutting and grinding;

[0018] Further: in the step S3: after the cofferdam is realized by using the longitudinal baffle or the transverse baffle, the longitudinal baffle is as close to the molding plate as possible to prevent leakage of the UHPC premix or reduce leakage of the slurry, and a plurality of limiting pressure blocks can be attached to one side of the longitudinal baffle to prevent the mold from being displaced due to insufficient lateral pressure of pouring the UHPC premix.

[0019] Further: in step S4: the UHPC premix needs to be poured with tamping to ensure that the premix is ​​poured evenly and filled densely; steel bars can be added according to the size and strength requirements of the UHPC to increase the strength of the plate, and embedded sleeves or embedded bars can be added according to the plate installation requirements.

[0020] Further: in the step S3, when there is no need to adjust the mold length, the transverse baffle is not used and is stored in the receiving groove.

[0021] Further: In step S3, the longitudinal stop bar and the transverse stop bar can be used to be close to one side of the finished UHPC mold, and aligned with the transverse scale and the longitudinal scale respectively, and the size of the finished UHPC mold can be accurately adjusted by the values ​​represented by the scale lines on the transverse scale and the longitudinal scale.

[0022] In summary, the present invention has the following beneficial effects:

[0023] ① Reduce mold production costs: The mold blocking process is realized through longitudinal and transverse baffles, which reduces the number of molds required for UHPC of different specifications, thereby reducing mold production costs.

[0024] ② Reduce mold processing time: The mold blocking process is realized through longitudinal and transverse baffles, which reduces the number of molds required for UHPC of different specifications, thereby shortening the mold processing time.

[0025] ③In summary, the method of this patent application, in the process of UHPC component production, realizes the production of multiple specification size plates with a single mold through the mold blocking process, without the need to open a mold separately according to each specification. These advantages will reduce the number of UHPC molds produced, thereby reducing the mold production cost, reducing the UHPC production cost, saving mold production time, and accelerating UHPC production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the transverse baffle in the present invention; Figure 3It is a schematic diagram of the structure of the mold side thin plate of the present invention; Figure 4 It is a schematic diagram of the storage structure of the transverse baffle and the longitudinal baffle in the present invention; Figure 5 It is a schematic diagram of the steps of the present invention; Figure 6 It is a schematic diagram of the use of the longitudinal baffle in the present invention; Figure 7 It is a schematic diagram of a UHPC finished product manufactured by the UHPC mold in the present invention; In the figure, 1. UHPC mold; 2. limiting pressure block; 3. longitudinal baffle; 4. transverse baffle; 5. transverse scale; 6. longitudinal scale; 11. molding plate; 12. mold frame; 31. receiving groove; 41. inner tube; 42. outer covering plate; 43. inner embedded strip; 44. inner embedded groove; 45. first bonding surface; 46. second bonding panel.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0034] Example:

[0035] See also Figure 1-Figure 5 , the present invention provides a technical solution:

[0036] A UHPC retaining mold and a mold-making method thereof, comprising: a UHPC mold 1, a limiting pressing block 2, and a longitudinal retaining bar 3; the UHPC mold 1 has a main body of a rectangular molding plate 11, the molding plate 11 has molding patterns on its surface, and the molding plate 11 is enclosed by a mold frame 12 with a square frame structure on its periphery; a longitudinal retaining bar 3 is arranged inside the UHPC mold 1, the longitudinal retaining bar 3 is parallel to the short side of the UHPC mold 1, and its end is in contact with the inner side of the mold frame 12; the limiting pressing block 2 is at least one group, and is placed inside the UHPC mold 1 and in contact with the side of the longitudinal retaining bar 3.

[0037] A retractable transverse baffle 4 is provided on one side of the longitudinal baffle 3, and the transverse baffle 4 includes an inner tube 41, an outer covering plate 42, an inner embedded strip 43, an inner embedded groove 44, a first fitting surface 45, and a second fitting panel 46; wherein the inner tube 41 is a square tube structure, and an inner embedded strip 43 with an inverted trapezoidal structure in longitudinal section is provided on the top of the inner tube 41, and an inner embedded groove 44 that slidably fits with the inner embedded strip 43 is provided below the outer covering plate 42 with a strip-like structure, and one end of the outer covering plate 42 is vertically connected downwardly to a second fitting panel 46 with a plate-like structure, and a side of the inner tube 41 close to the second fitting panel 46 is the first fitting surface 45; the inner side of the second fitting panel 46 is fitted with the first fitting surface 45.

[0038] The thickness of the second bonding panel 46, that is, the distance between the outer side surfaces of the first bonding surface 45 and the second bonding panel 46 is controlled to be between 0.6 mm and 1 mm. That is to say, when the transverse baffle 4 is involved in mold building, the error of the side surface of the finished UHPC mold close to the transverse baffle 4 is only 0.6 mm to 1 mm in height. This error can be ignored after subsequent seam beautification or caulking, and will not affect the aesthetics and neatness of the finished UHPC mold.

[0039] The top of the longitudinal baffle 3 is provided with a receiving groove 31 for receiving the contracted transverse baffle 4 . The transverse baffle 4 is embedded in the receiving groove 31 when not in use.

[0040] The long sides of the mold frame 12 are provided with transverse scales 5 , and the short sides of the mold frame 12 are provided with longitudinal scales 6 .

[0041] Brief description of the usage process:

[0042] A UHPC mold and a mold making method thereof, comprising the following steps:

[0043] Step S1, cleaning the mold: cleaning the inside of the UHPC mold 1, cleaning the molding patterns of the molding plate 11, and preventing the particle impurities on the molding plate 11 from affecting the surface texture;

[0044] Step S2, applying a release agent: applying a release agent on the surface of the molding plate 11 of the UHPC mold 1 and the vertical inner side of the mold frame 12 to more effectively demold the product without damaging it;

[0045] Step S3, mold blocking: according to the required plate size, longitudinal blocking bars 3 or transverse blocking bars 4 or both longitudinal blocking bars 3 and transverse blocking bars 4 are used to form a cofferdam inside the UHPC mold 1 into a required area and shape. The total length of the inner tube 41 and the outer covering plate 42 can be adjusted by pulling the inner tube 41 and the outer covering plate 42 in the transverse blocking bar 4 to adapt to the position of the longitudinal blocking bar 3;

[0046] Step S4, grouting: mix the UHPC premix, and pour it inside the cofferdam formed by the longitudinal baffle 3 or the transverse baffle 4. The UHPC premix is ​​a self-leveling material, so the UHPC premix is ​​kept naturally leveled. In order to speed up the leveling rate, tools can be used to assist in spreading the material;

[0047] Step S5, air-drying and curing: Cover the top surface of the UHPC mold 1 with a tarp to allow the UHPC premix to dry naturally; both air-drying and demoulding curing must meet the UHPC curing standard strength requirements, and early demoulding, transportation, and construction are not allowed;

[0048] Step S6, demoulding: demoulding after standing to reach the curing strength;

[0049] Step S7, edge cutting and grinding: after using the longitudinal baffle 3 and the transverse baffle 4, there will be burrs after demoulding, which requires edge cutting and grinding;

[0050] In the step S3, after the cofferdam is realized by using the longitudinal baffle 3 or the transverse baffle 4, the longitudinal baffle 3 is as close to the molding plate 11 as possible to prevent leakage of the UHPC premix or reduce leakage of the slurry. A plurality of limiting pressure blocks 2 can be attached to one side of the longitudinal baffle 3 to prevent the mold from being displaced due to insufficient lateral pressure of pouring the UHPC premix.

[0051] In step S4: the UHPC premix needs to be poured with tamping to ensure that the premix is ​​poured evenly and filled densely; steel bars can be added according to the size and strength requirements of the UHPC to increase the strength of the plate, and embedded sleeves or embedded bars can be added according to the plate installation requirements.

[0052] In the step S3 , when the molding length does not need to be adjusted, the transverse baffle 4 is not used and is stored in the receiving groove 31 .

[0053] In step S3, the longitudinal baffle 3 and the transverse baffle 4 can be used to be close to one side of the finished UHPC mold and aligned with the transverse scale 5 and the longitudinal scale 6 respectively, and the size of the finished UHPC mold can be accurately adjusted by the values ​​represented by the scale lines on the transverse scale 5 and the longitudinal scale 6.

[0054] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A UHPC retaining mold, comprising: A UHPC mould (1), a limiting pressure block (2), and a longitudinal stop bar (3); the main body of the UHPC mould (1) is a rectangular moulding plate (11), the surface of the moulding plate (11) is provided with moulding patterns, the outer periphery of the moulding plate (11) is provided with a mould frame (12) with a square frame structure for enclosure, a longitudinal stop bar (3) is provided inside the UHPC mould (1), the longitudinal stop bar (3) is parallel to the short side of the UHPC mould (1), and the end of the longitudinal stop bar (3) is in contact with the inner side of the mould frame (12), and the limiting pressure block (2) is provided in at least one group, which is placed inside the UHPC mould (1) and in contact with the side of the longitudinal stop bar (3).

2. A UHPC blocking mold according to claim 1, characterized in that: A retractable transverse blocking bar (4) is provided on one side of the longitudinal blocking bar (3), and the transverse blocking bar (4) comprises an inner tube (41), an outer covering plate (42), an inner embedding bar (43), an inner embedding groove (44), a first bonding surface (45), and a second bonding panel (46); wherein the inner tube (41) is a square tube structure, an inner embedding bar (43) having an inverted trapezoidal structure in longitudinal section is provided on the top of the inner tube (41), an inner embedding groove (44) which is slidably matched with the inner embedding bar (43) is provided below the outer covering plate (42) having a strip plate structure, one end of the outer covering plate (42) is vertically connected downwardly to a second bonding panel (46) having a plate structure, and a side of the inner tube (41) close to the second bonding panel (46) is the first bonding surface (45); and the inner side of the second bonding panel (46) is bonded to the first bonding surface (45).

3. A UHPC blocking mold according to claim 2, characterized in that: The thickness of the second bonding panel (46), that is, the distance between the first bonding surface (45) and the outer side surface of the second bonding panel (46) is controlled to be between 0.6 mm and 1 mm. That is to say, when the transverse baffle (4) is involved in the mold making, the error of the side surface of the finished UHPC mold close to the transverse baffle (4) is only 0.6 mm to 1 mm in height. This error can be ignored after the subsequent seam beautification or caulking, and will not affect the aesthetics and neatness of the finished UHPC mold.

4. A UHPC blocking mold according to claim 3, characterized in that: The top of the longitudinal baffle (3) is provided with a receiving groove (31) capable of receiving the contracted transverse baffle (4); the transverse baffle (4) is embedded in the receiving groove (31) when not in use.

5. A UHPC retaining mold according to claim 4, characterized in that: The long side of the mold frame (12) is provided with a transverse scale (5), and the short side of the mold frame (12) is provided with a longitudinal scale (6).

6. A UHPC mold making method according to claim 5, characterized in that: The following steps are involved: Step S1, cleaning the mold: cleaning the inside of the UHPC mold (1), cleaning the molding patterns of the molding plate (11), and preventing the particle impurities on the molding plate (11) from affecting the surface texture; Step S2, applying a release agent: applying a release agent on the surface of the molding plate (11) of the UHPC mold (1) and the vertical inner side of the mold frame (12) to more effectively release the mold without damaging the product; Step S3, blocking the mold: according to the required plate size, longitudinal blocking bars (3) or transverse blocking bars (4) or both longitudinal blocking bars (3) and transverse blocking bars (4) are used to form a cofferdam inside the UHPC mold (1) into a required area and shape. The total length of the inner tube (41) and the outer covering plate (42) can be adjusted by pulling the inner tube (41) and the outer covering plate (42) in the transverse blocking bar (4) to make them fit the position of the longitudinal blocking bar (3); Step S4, grouting: Mix the UHPC premix and pour it inside the cofferdam formed by the longitudinal baffle (3) or the transverse baffle (4). The UHPC premix is ​​a self-leveling material, so the UHPC premix is ​​allowed to maintain natural leveling. In order to speed up the leveling rate, tools can be used to assist in spreading the material; Step S5, air-drying and curing: Cover the top surface of the UHPC mold (1) with a rain cloth to allow the UHPC premix to dry naturally; both air-drying and demoulding curing must meet the strength requirements of the UHPC curing standard, and early demoulding, transportation, and construction are not allowed; Step S6, demoulding: demoulding after standing to reach the curing strength; Step S7, edge cutting and grinding: After using the longitudinal baffle (3) and the transverse baffle (4), there will be burrs after demoulding, which requires edge cutting and grinding.

7. A UHPC mold making method according to claim 6, characterized in that: In the step S3, after the cofferdam is formed by using the longitudinal baffle (3) or the transverse baffle (4), the longitudinal baffle (3) is as close to the molding plate (11) as possible to prevent leakage of the UHPC premix or minimize leakage of the slurry. A plurality of limiting pressure blocks (2) can be attached to one side of the longitudinal baffle (3) to prevent displacement of the mold due to insufficient lateral pressure when pouring the UHPC premix.

8. A UHPC mold making method according to claim 6, characterized in that: In step S4: the UHPC premix needs to be poured with tamping to ensure that the premix is ​​poured evenly and filled densely; steel bars can be added according to the size and strength requirements of the UHPC to increase the strength of the plate, and embedded sleeves or embedded bars can be added according to the plate installation requirements.

9. A UHPC mold making method according to claim 6, characterized in that: In the step S3, when the molding length does not need to be adjusted, the transverse baffle (4) is not used and is stored in the receiving groove (31).

10. A UHPC mold making method according to claim 6, characterized in that: In step S3, the longitudinal stop bar (3) and the transverse stop bar (4) can be used to be close to one side of the finished UHPC mold and aligned with the transverse scale (5) and the longitudinal scale (6) respectively, and the size of the finished UHPC mold can be accurately adjusted by the values ​​represented by the scale lines on the transverse scale (5) and the longitudinal scale (6).

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