Anti-crack concrete and anti-crack concrete processing method

Abstract

The invention relates to the technical field of concrete processing, in particular to anti-crack concrete and an anti-crack concrete processing method. In order to improve the crack resistance of concrete serving as a supporting structure, during machining, a tie bar mechanism is used for being matched with a mold and first steel bars in a horizontal array, and the tie bar mechanism comprises a supporting table, a pressing table arranged above the supporting table, a first linear driving mechanism for adjusting the transverse position of the supporting table and the transverse position of the pressing table and a second linear driving mechanism for adjusting the longitudinal position of the pressing table; the two tendon stretching mechanisms are arranged in a mirror symmetry mode. The first reinforcing steel bars are stretched in the transverse direction and the upper direction, the first reinforcing steel bars in the state are fixed in the concrete, the upper end face of the concrete serves as a pressed face, and concrete cracking caused by bending of the first reinforcing steel bars can be relieved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete processing, and more specifically to anti-cracking concrete and an anti-cracking concrete processing method. Background Art

[0002] As the main supporting structure of a building, the performance stability and durability of concrete components are crucial to the safety of the entire building. However, concrete cracking is a problem that is easy to exist and difficult to completely avoid. This not only affects the aesthetics of the building, but more importantly, it may weaken the overall strength and bearing capacity of the structure, thereby threatening its safety. Concrete is not tough enough. In contrast, steel bars, as a metal product, have extremely high tensile strength and good toughness, which can effectively make up for the shortcomings of concrete in tensile properties. Therefore, steel bars are widely used as reinforcing materials in concrete structures to form reinforced concrete structures.

[0003] However, it is the difference in the physical properties of these two materials, especially their differences in response to external stress, that has become a potential factor in concrete cracking. When a building is subjected to external forces, the internal steel bars tend to bend or deform to a certain extent to absorb energy due to their excellent toughness. However, in this process, the deformation of the steel bars will produce tensile stress on the concrete around them. Since the tensile strength of concrete is much lower than that of steel bars, this continuous tensile stress exceeds the ultimate tensile strength of concrete, which will cause cracks in the concrete. Summary of the invention

[0004] The invention provides crack-resistant concrete and a crack-resistant concrete processing method, aiming at improving the crack-resistant ability of concrete used as a supporting structure.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A crack-resistant concrete processing device includes a tensioning mechanism, which includes a support platform, a press platform arranged above the support platform, a first linear drive mechanism for adjusting the lateral positions of the support platform and the press platform, and a second linear drive mechanism for adjusting the longitudinal position of the press platform; two tensioning mechanisms are arranged in mirror symmetry.

[0007] When the support table and the press table are fitted together, a linearly distributed flat mouth is formed.

[0008] The first linear drive mechanism includes two parallel guide rails, two slides respectively slidably connected to the two guide rails, a base fixed to the upper ends of the two slides, a first telescopic cylinder fixed to the base, a connecting piece fixed to the upper end of the base, and a support fixed to the connecting piece; the second linear drive mechanism includes a frame fixed to the support, a second telescopic cylinder fixed to the frame, and the movable end of the second telescopic cylinder is fixed to the top of the press table.

[0009] The connecting member includes a first base, a straight rod slidably connected to the first base, a limiting portion fixed to one end of the straight rod, and a second base fixed to the other end of the straight rod. A spring is sleeved on the straight rod, and the two ends of the spring are respectively in contact with the first base and the second base; there are two connecting members of the first linear drive mechanism, two first bases are fixed to the base, and two second bases are fixed to the lower end of the support.

[0010] A mold is arranged between the two reinforcement mechanisms. The mold is a split structure and can be combined and separated. When the mold is combined, a hole is arranged on the mold for the first reinforcement to pass through.

[0011] The mold includes a lower mold and an upper mold detachably connected to the upper end of the lower mold. The center of the upper mold is fixedly connected to a wall. When the upper mold and the lower mold are combined, linearly distributed circular holes are arranged on the end face close to the tensioning mechanism. The positions of the circular holes close to both sides of the tensioning mechanism correspond one by one to achieve axis coincidence, and the axes of all the circular holes are located on a virtual horizontal plane.

[0012] A plurality of first steel bars are arranged in a linear array in the upper mold and the lower mold, and the circular holes with two coincident axes are used to place the first steel bars, and all the first steel bars are fixedly connected to the second steel bars, and a lifting ring is fixedly connected to the upper end of the second steel bar.

[0013] Anti-crack concrete processing device, support table, third telescopic cylinder,

[0014] A method for processing crack-resistant concrete comprises the following steps:

[0015] Step 1: inject part of the concrete into the mold;

[0016] Step 2: Pass a row of first horizontally arranged steel bars through the mold from left to right, and at this time, the concrete in the mold is lower than the first steel bars;

[0017] Step 3: Use two reinforcement mechanisms to clamp the reinforcement and stretch the first reinforcement;

[0018] Step 4: Pull the center of the first steel bar upwards;

[0019] Step 5: A window is formed at the upper end of the mold, and concrete is injected into the mold through the window until the mold is filled.

[0020] A crack-resistant concrete is processed by the above processing method, comprising a concrete body containing first steel bars distributed in a linear array, wherein the first steel bars are located on the same plane, and the upper end surface of the concrete body is a supporting surface.

[0021] The beneficial effects of the crack-resistant concrete and the crack-resistant concrete processing method of the present invention are:

[0022] By stretching the first reinforcing bar in the horizontal direction and upward and fixing the first reinforcing bar in this state in the concrete, the upper end surface of the concrete is used as a pressure surface, so that the cracking of the concrete caused by the bending of the first reinforcing bar can be alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front view of a crack-resistant concrete processing device of the present invention is shown;

[0024] Figure 2 A side view of the processing device is shown;

[0025] Figure 3 A stereogram of the tensioning mechanism is shown;

[0026] Figure 4 A schematic diagram showing the processing device removing the upper mold;

[0027] Figure 5 Shows Figure 4 A magnified view of point A;

[0028] Figure 6 A schematic diagram of the upper die is shown;

[0029] Figure 7 Shows Figure 6 Enlarged view of point B.

[0030] In the figure: a support platform 1; a press platform 2; a flat mouth 3; a guide rail 4; a slide 5; a base 6; a first base 7; a straight rod 8; a second base 9; a first telescopic cylinder 10; a frame 11; a second telescopic cylinder 12; a lower mold 13; an upper mold 14; a wall 15; a first steel bar 16; a second steel bar 17; a lifting ring 17a; a support platform 18; and a third telescopic cylinder 19. DETAILED DESCRIPTION

[0031] A method for processing crack-resistant concrete comprises the following steps:

[0032] Step 1: Prepare the mold and spray the mold release agent inside the mold. The mold includes a lower mold 13 and an upper mold 14 detachably connected to the upper end of the lower mold 13. A window is set in the center of the upper mold 14. A wall 15 connected and connected to the window is fixed on the upper mold 14. The wall 15 extends downward. Semicircular holes are set at the left and right ends of the end faces of the upper mold 14 and the lower mold 13 close to each other. When the upper mold 14 and the lower mold 13 are combined, the left and right ends form circular holes linearly distributed in the front and back directions. These circular holes are formed by the semicircular holes on the upper and lower sides being combined due to the one-to-one correspondence in position. The positions of the circular holes in the left and right directions correspond one-to-one to achieve axis coincidence, and the circular holes with coincident axes are a pair of circular holes;

[0033] Step 2: insert a first steel bar 16 into each pair of circular holes, and inject concrete into the mold through the window. At this time, the concrete in the mold is lower than the first steel bar 16;

[0034] Place the second steel bar 17 on the top or bottom of all the first steel bars 15, preferably on the bottom, the second steel bar 17 is perpendicular to the first steel bars 15, and weld the second steel bar 17 to all the first steel bars 15, and weld a lifting ring 17a at the upper end of the second steel bar 17;

[0035] Step 3: Use two reinforcement mechanisms to clamp the reinforcement and stretch the first reinforcement 16;

[0036] Among them, the tensioning mechanism includes a support platform 1, a first linear drive mechanism for adjusting the lateral position of the support platform 1, the first linear drive mechanism includes two parallel guide rails 4, two slides 5 respectively slidably connected to the two guide rails 4, a base 6 fixed to the upper ends of the two slides 5, a hydraulic first telescopic cylinder 10 with a telescopic end facing left is arranged on the right side of the base 6, the base 6 is fixed to the telescopic end of the first telescopic cylinder 10, and also includes a connecting piece fixed to the upper end of the base 6, the support platform 1 is fixed to the connecting piece, and also includes a press platform 2 arranged above the support platform 1, a second linear drive mechanism fixed to the support platform 1 for driving the press platform 2 to rise and fall, the second linear drive mechanism includes a frame 11 fixed to the support platform 1, a second telescopic cylinder 12 fixed to the frame 11, the telescopic end of the second telescopic cylinder 12 is arranged downward, and the telescopic end of the second linear drive mechanism is fixed to the top of the press platform 2.

[0037] The tensioning mechanism is provided with two on the left and right sides in mirror symmetry, and the left sides of all the first steel bars 16 are pressed and fixed between the support platform 1 and the press platform 2 on the left, and the right sides of all the first steel bars 16 are pressed and fixed between the support platform 1 and the press platform 2 on the right. Then, the first telescopic cylinder 10 is started to increase the distance between the two bases 6, so that the support platform 1 and the press platform 2 apply a tensile force to the first steel bars 15.

[0038] Step 4: Spray a mold release agent on the part of the hanger that contacts the lifting ring 17a, hook the hanger on the lifting ring 17a, and pull the second steel bar 17 upward, so that the second steel bar 17 pulls all the first steel bars 16, and applies an upward force to the center of the first steel bar 16;

[0039] Step 5: A window is formed at the upper end of the mold. Concrete is poured into the mold through the window until the mold is filled, but the ring 17a is not covered. The wall 15 prevents the surrounding concrete from flowing to the ring 17a. After the concrete solidifies, remove the hanger, dismantle the lower mold 13 and the upper mold 14, and pour concrete into the solid part of the formed concrete. After solidification, a concrete support structure containing linearly distributed first steel bars 16 is formed inside. The support surface of the anti-crack concrete is above the concrete to withstand the downward pressure. Finally, the first steel bars 16 that are used for concrete are cut off.

[0040] To further illustrate, when the support platform 1 and the pressing platform 2 are fitted together, a linearly distributed flat opening 3 is formed, thereby pressing and fixing the first steel bars 16 of different diameters, and the mold size and the circular hole diameter are positively correlated with the diameter of the first steel bars 16 .

[0041] To further illustrate, for example Figure 3 The connecting member includes a first base 7, a straight rod 8 slidably connected to the first base 7, a limiter fixed to the left end of the straight rod 8, and a second base 9 fixed to the right end of the straight rod 8. A spring is sleeved on the straight rod 8, and the two ends of the spring are in contact with the first base 7 and the second base 9 respectively, and the limiter is against the left end of the first base 7; the first linear drive mechanism is provided with two connecting members, two first bases 7 are fixed to the base 6, and two second bases 9 are fixed to the lower end of the support 1. The spring is in a compressed state and is used to provide a force in the direction of stretching the first steel bar 16. If the first steel bar 16 bends upward when it is suspended, the spring will be further compressed.

[0042] A mold is arranged between the two reinforcement mechanisms. The mold is a split structure and can be combined and separated. When the mold is combined, a hole is arranged on the mold for the first reinforcement 15 to pass through.

[0043] A support platform 18 is provided below the mold, and a third telescopic cylinder 19 for adjusting the height of the support platform 18 is fixedly connected to the lower end of the support platform 18 so as to align the flat mouth 3 and the round hole.

Claims

1. A crack-resistant concrete processing device, comprising a tensioning mechanism, wherein the tensioning mechanism comprises a support platform (1), a press platform (2) arranged above the support platform (1), a first linear drive mechanism for adjusting the lateral position of the support platform (1) and the press platform (2), and a second linear drive mechanism for adjusting the longitudinal position of the press platform (2); two tensioning mechanisms are arranged in mirror symmetry.

2. According to the anti-crack concrete processing device described in claim 1, the support platform (1) and the press platform (2) form a linearly distributed flat mouth (3) when they are attached.

3. According to the anti-cracking concrete processing device described in claim 1, the first linear drive mechanism includes two parallel guide rails (4), two slides (5) respectively slidably connected to the two guide rails (4), a base (6) fixed to the upper ends of the two slides (5), a first telescopic cylinder (10) fixed to the base (6), a connecting piece fixed to the upper end of the base (6), and a support platform (1) fixed to the connecting piece; the second linear drive mechanism includes a frame (11) fixed to the support platform (1), a second telescopic cylinder (12) fixed to the frame (11), and the movable end of the second telescopic cylinder (12) is fixed to the top of the press platform (2).

4. The anti-cracking concrete processing device according to claim 3, wherein the connecting member comprises a first base (7), a straight rod (8) slidably connected to the first base (7), a limiting portion fixed to one end of the straight rod (8), and a second base (9) fixed to the other end of the straight rod (8), and a spring is sleeved on the straight rod (8), and the two ends of the spring are respectively in contact with the first base (7) and the second base (9); the first linear drive mechanism is provided with two connecting members, the two first bases (7) are fixed to the base (6), and the two second bases (9) are fixed to the lower end of the support platform (1).

5. According to the crack-resistant concrete processing device of claim 4, a mold is arranged between the two reinforcement mechanisms, and the mold is a split structure that can be combined and separated. When the mold is combined, a hole is arranged on the mold for the first reinforcement (15) to pass through.

6. According to the crack-resistant concrete processing device of claim 5, the mold includes a lower mold (13), and an upper mold (14) detachably connected to the upper end of the lower mold (13), the center of the upper mold (14) is fixedly connected to a wall body (15), and when the upper mold (14) and the lower mold (13) are combined, linearly distributed circular holes are arranged on the end surface close to the reinforcement mechanism, the positions of the circular holes close to both sides of the reinforcement mechanism correspond one to one to achieve axis coincidence, and the axes of all the circular holes are located on a virtual horizontal plane.

7. According to the crack-resistant concrete processing device of claim 6, a plurality of first steel bars (15) are arranged in a linear array in the upper mold (14) and the lower mold (13), and the circular holes with two coincident axes are used to place the first steel bars (15), and all the first steel bars (15) are fixedly connected to the second steel bars (17), and a lifting ring (17a) is fixedly connected to the upper end of the second steel bar (17).

8. According to the crack-resistant concrete processing device of claim 6, a support platform (18) is arranged below the mold, and a third telescopic cylinder (19) for adjusting the height of the support platform (18) is fixedly connected to the lower end of the support platform (18).

9. A method for processing crack-resistant concrete, characterized in that: The following steps are involved: Step 1: inject part of the concrete into the mold; Step 2: Pass a row of first horizontally arranged steel bars (16) through the mold from left to right, and at this time, the concrete in the mold is lower than the first steel bars (16); Step 3: using two reinforcement tensioning mechanisms to clamp the reinforcement and stretch the first reinforcement (16); Step 4: Pull the center of the first steel bar (16) upwards; Step 5: A window is formed at the upper end of the mold, and concrete is injected into the mold through the window until the mold is filled.

10. A crack-resistant concrete processed by the crack-resistant concrete processing method according to claim 9, comprising a concrete body containing first steel bars (16) distributed in a linear array, wherein the first steel bars (16) are located on the same plane, and the upper end surface of the concrete body is a supporting surface.

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