Early crack resistance detection device for stone chip concrete

Abstract

The utility model discloses an early crack resistance detection device for stone chip concrete, which belongs to the technical field of concrete crack resistance detection and comprises a base bottom plate. The counter-force angle steel is arranged at the upper end of the base bottom plate; the four side plates are rotationally arranged on the base bottom plate, a first area is defined by the four side plates, and a second area is defined by the four side plates and the counter-force angle steel; the plurality of bottom die supports are all arranged on the base bottom plate; the bottom die is arranged at the upper end of the bottom die support, the bottom die is detachably connected with the side die, and the bottom die is located in the first area; and one end of each side plate support is rotationally connected with the side plate, and the end, opposite to the end connected with the side plate, of each side plate support is rotationally connected with the counter-force angle steel. According to the utility model, the influence of binding power between the side mold and concrete can be eliminated, and the accuracy of anti-cracking detection of stone chip concrete is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete crack resistance detection, in particular to an early crack resistance detection device for stone chip concrete. Background Art

[0002] Reinforced concrete is the main material for infrastructure projects. Its concrete waste cannot be degraded and has a low recycling rate. Currently, methods such as recycling waste concrete after crushing and using other materials to replace sand and gravel have emerged, especially using granite stone chips to replace coarse aggregates in concrete.

[0003] Early cracks are a relatively common problem for stone chip concrete structures. To detect whether there are cracks in stone chip concrete structures in the early stage, existing early crack resistance detection devices for stone chip concrete use flat specimen molds and simulate the bottom friction of concrete with polytetrafluoroethylene sheets. However, this device has the bonding force between the angle steel side mold and concrete during the early crack resistance research of concrete, and at the same time, the friction force of the polytetrafluoroethylene sheet on the concrete is small. Content of the Utility Model

[0004] The purpose of the utility model is to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides an early crack resistance detection device for stone chip concrete, which can eliminate the bonding force between the side mold and concrete and improve the accuracy of early crack resistance detection of stone chip concrete.

[0005] The early crack resistance detection device for stone chip concrete according to the embodiment of the utility model includes a base bottom plate; a reaction angle steel, which is arranged at the upper end of the base bottom plate; four side plates, all four side plates are rotatably arranged on the base bottom plate, the four side plates enclose a first area, and a second area is enclosed between the four side plates and the reaction angle steel; a plurality of bottom mold supports, all of which are arranged on the base bottom plate, and are all located in the first area, and the plurality of bottom mold supports are evenly distributed along the length direction of the base bottom plate; a bottom mold, which is arranged at the upper end of the bottom mold support, the shape of the bottom mold corresponds to that of the side mold, the bottom mold and the side mold are detachably connected, and the bottom mold is located in the first area; a plurality of side plate supports, all of which are arranged in the second area, one end of each side plate support is connected to the side plate, and the opposite end of each side plate support connected to the side plate is connected to the reaction angle steel.

[0006] The early crack resistance detection device for stone chip concrete according to the embodiment of the utility model has at least the following beneficial effects: a plurality of side plate supports are evenly arranged on the outer wall of the side plate along the periphery of the first area, and the two ends of the side plate support are respectively connected to the outer wall of the side plate and the reaction angle steel to limit the position of the side plate. Thus, the concrete is poured into the first area. After the concrete is cured, the side plates around the concrete are turned outwards to separate the side plates from the concrete, so as to eliminate the influence of the bonding force between the side mold and concrete and improve the accuracy of early crack resistance detection of stone chip concrete.

[0007] According to some embodiments of the present utility model, the base floor is a steel plate.

[0008] According to some embodiments of the present utility model, the reaction angle steel includes two wing plates, the two wing plates are perpendicular to each other, and both of the two wing plates are connected to the base floor.

[0009] According to some embodiments of the present utility model, the bottom formwork support is angle steel.

[0010] According to some embodiments of the present utility model, a rough surface mortar board is laid on the top of the bottom formwork.

[0011] According to some embodiments of the present utility model, the side plate is rotatably connected to the base floor through a hinge.

[0012] According to some embodiments of the present utility model, a plurality of through holes are formed in at least one side plate, and a screw rod is inserted through each through hole, and the screw rod is used to simulate the internal tensile force of the concrete.

[0013] According to some embodiments of the present utility model, the bottom formwork is a steel plate.

[0014] According to some embodiments of the present utility model, the bottom formwork support includes a first abutting top, a second abutting top and a telescopic part. The first abutting top and the second abutting top are respectively arranged at both ends of the telescopic part. One of the first abutting top and the second abutting top is rotatably connected to the reaction angle steel, and the other is rotatably connected to the side plate. The telescopic part is used to control the distance between the reaction angle steel and the side formwork.

[0015] According to some embodiments of the present utility model, the size of the first area is the equal-proportion reduced size of the highway concrete panel.

[0016] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 is a schematic structural diagram of a stone-chip concrete early cracking detection device according to an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 the explosion schematic diagram in

[0020] Figure 3 is Figure 1 the schematic structural diagram of the side plate support in

[0021] Reference numerals:

[0022] Base plate 100;

[0023] Reaction angle steel 200, wing plate 210;

[0024] Side plate 300, first area 310, second area 320, through hole 330, screw 340, hinge 350;

[0025] Bottom die support 400;

[0026] Bottom die 500;

[0027] Side plate support 600, first abutting top 610, second abutting top 620, telescopic part 630. Detailed implementation mode

[0028] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation descriptions such as up, down, front, back, left, right, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of the first time, the second time, etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0032] Refer to Figures 1 to 3 Describe a stone chip concrete early anti-cracking detection device according to an embodiment of the present invention.

[0033] As Figures 1 to 3As shown, the early anti-cracking detection device for crushed stone concrete includes a base bottom plate 100; a reaction angle steel 200, which is arranged at the upper end of the base bottom plate 100; four side plates 300, all of which are rotatably arranged on the base bottom plate 100. The four side plates 300 enclose a first area 310, and a second area 320 is enclosed between the four side plates 300 and the reaction angle steel 200; a plurality of bottom form supports 400, all of which are arranged on the base bottom plate 100 and are located in the first area 310. The plurality of bottom form supports 400 are evenly distributed along the length direction of the base bottom plate 100; a bottom form 500, which is arranged at the upper end of the bottom form support 400. The bottom form 500 corresponds to the shape of the first area 310. The bottom form 500 is detachably connected to the side plates 300 and is located in the first area 310; a plurality of side plate supports 600, which are arranged in the second area 320. One end of each side plate support 600 is rotatably connected to the side plate 300, and the opposite end of each side plate support 600 connected to the side plate 300 is rotatably connected to the reaction angle steel 200.

[0034] As Figure 1 and Figure 2 shown, the base bottom plate 100, the reaction angle steel 200 and the bottom form 500 are all rectangular. Specifically, the reaction angle steel 200 is arranged at the upper end of the base bottom plate 100. The four side plates 300 are rotatably arranged in an enclosed shape at the upper end of the base bottom plate 100. The first area 310 enclosed by the plurality of side plates 300 is rectangular, and the second area 320 enclosed by the plurality of side plates 300 and the reaction angle steel 200 is in a hollow rectangular shape, that is, the second area 320 is sleeved outside the first area 310. A plurality of bottom form supports 400 are arranged in the first area 310 along the front-back direction. The bottom form 500 is fixedly arranged on the bottom form supports 400 and corresponds to the shape of the first area 310. It should be noted that the bottom form 500 is detachably connected to the side plates 300. A plurality of side plate supports 600 are evenly arranged on the outer walls of the side plates 300 along the periphery of the first area 310. The two ends of the side plate supports 600 are respectively connected to the outer walls of the side plates 300 and the reaction angle steel 200 to limit the positions of the side plates 300. Thus, the concrete is poured into the first area 310. After the concrete is cured, the side plates 300 around the concrete are turned outwards to separate the side plates 300 from the concrete, thereby eliminating the influence of the adhesion force between the side plates 300 and the concrete and improving the detection efficiency of the anti-cracking of the crushed stone concrete.

[0035] It should be noted that after the specimen is poured, vibrated, and leveled, the curing method of the specimen, the start and end times of the test observation, and the environmental conditions during the test can be selected according to the specific situation of the engineering object, so as to evaluate the early cracking tendency of concrete, including the effects of plastic shrinkage, drying shrinkage, and autogenous shrinkage. The main basis for evaluating crack resistance is the time when each crack appears on the surface of the specimen observed and recorded during the test, especially the initial crack time, the maximum width of the crack, the number of cracks, and the total length, etc.

[0036] In some specific embodiments of the present invention, the size of the first region 310 is the scaled-down size of the highway concrete slab, so as to further ensure the pertinence and accuracy of the test.

[0037] In some specific embodiments of the present invention, the base plate 100 is a steel plate.

[0038] In some specific embodiments of the present invention, the reaction angle steel 200 includes two wing plates 210, the two wing plates 210 are perpendicular to each other, and both of the two wing plates 210 are connected to the base plate 100. As Figure 1 and Figure 2 shown, the right angle of the reaction angle steel 200 is arranged upward, that is, the edges of the two base plates are both connected to the base plate 100 to form an inclined surface that slopes downward toward the second region 320.

[0039] In some specific embodiments of the present invention, the bottom formwork support 400 is an angle steel. As Figure 2 shown, the bottom formwork support 400 is an angle steel with the right angle part arranged upward. In this specific embodiment, four bottom formwork supports 400 are provided, and the four bottom formwork supports 400 are evenly distributed in the front-rear direction. Of course, according to the size and weight of the specimen, the number of bottom formwork supports 400 can also be set to 2, 3, 5, 6, etc.

[0040] In some specific embodiments of the present invention, a rough surface mortar board is laid on the top of the bottom formwork 500. Laying the rough surface mortar board on the bottom formwork 500 can create a flat surface to ensure that the specimen is evenly stressed during the test and reduce the uneven deformation at the bottom of the specimen. At the same time, by setting a rough surface texture on the bottom formwork 500, the bonding force between the bottom formwork 500 and the concrete is increased to ensure the firm combination between the concrete specimen and the bottom formwork 500 and prevent the specimen from separating or sliding from the bottom formwork 500 during the test.

[0041] In some specific embodiments of the present invention, the side plate 300 is rotatably connected to the base plate 100 through a hinge 350.

[0042] In some specific embodiments of the present utility model, a plurality of through holes 330 are formed in at least one side plate 300, and a screw rod 340 is inserted through each through hole 330. The screw rod 340 is used to simulate the internal tensile force of the concrete.

[0043] As Figure 1 shown, in this specific embodiment, three through holes 330 are formed in each side plate 300 with a shorter length, and a screw rod 340 is inserted through each through hole 330. The screw rod 340 extends from the second region 320 to the first region 310. When the poured concrete shrinks, the surroundings will be restricted by these screw rods 340 to provide the internal tensile force of the concrete.

[0044] In some specific embodiments of the present utility model, the bottom mold 500 is a steel plate, and the steel plate bottom mold 500 is connected to the angle steel bottom mold support 400 by spot welding.

[0045] In some specific embodiments of the present utility model, the bottom mold support 400 includes a first abutting top 610, a second abutting top 620 and a telescopic part 630. The first abutting top 610 and the second abutting top 620 are respectively arranged at both ends of the telescopic part 630. The first abutting top 610 and the second abutting top 620 are alternatively rotatably connected to the reaction angle steel 200, and the other is rotatably connected to the side plate 300. The telescopic part 630 is used to control the distance between the reaction angle steel 200 and the side plate 300.

[0046] As Figure 3 shown, the first abutting top 610 and the second abutting top 620 are respectively arranged at both ends of the telescopic part 630, and the first abutting top 610 and the second abutting top 620 are arranged in parallel. The first abutting top 610 and the second abutting top 620 are both perpendicularly connected to the telescopic part 630. Specifically, sleeves are sleeved on both the first abutting top 610 and the second abutting top 620, and the telescopic part 630 is a screw rod with an adjustable exposed length. Thus, one of the sleeves on the first abutting top 610 and the second abutting top 620 is fixed on the inclined surface of the reaction angle steel 200, and the sleeve on the other is fixed on the outer wall of the side plate 300, so that the bottom mold support 400 is respectively rotatably connected to the reaction angle steel 200 and the side plate 300. By adjusting the screw rod, the flipping of the side plate 300 can be realized, thereby controlling the installation and removal of the side plate 300.

[0047] The embodiments of the present utility model have been described in detail above with reference to the drawings. However, the present utility model is not limited to the above embodiments. Various changes can be made without departing from the gist of the present utility model within the knowledge scope of those of ordinary skill in the art.

Claims

1. A device for detecting early cracking of stone chip concrete, characterized in that: include: Base bottom plate (100); A reaction angle steel (200), wherein the reaction angle steel (200) is arranged on the upper end of the base bottom plate (100); Four side plates (300), wherein the four side plates (300) are all rotatably disposed on the base bottom plate (100), the four side plates (300) enclose a first area (310), and the four side plates (300) and the reaction angle steel (200) enclose a second area (320); a plurality of bottom mold supports (400), wherein the plurality of bottom mold supports (400) are all arranged on the base bottom plate (100), the plurality of bottom mold supports (400) are all located in the first area (310), and the plurality of bottom mold supports (400) are evenly distributed along the length direction of the base bottom plate (100); a bottom mold (500), the bottom mold (500) being arranged at the upper end of the bottom mold support (400), the bottom mold (500) corresponding to the shape of the first area (310), the bottom mold (500) being detachably connected to the side plate (300), and the bottom mold (500) being located in the first area (310); A plurality of side panel supports (600), wherein the plurality of side panel supports (600) are arranged in the second area (320), one end of each of the side panel supports (600) is rotatably connected to the side panel (300), and the opposite end of each of the side panel supports (600) connected to the side panel (300) is rotatably connected to the reaction angle steel (200).

2. The early crack detection device for stone chip concrete according to claim 1 is characterized in that: The base bottom plate (100) is a steel plate.

3. The early crack detection device for stone chip concrete according to claim 1 is characterized in that: The reaction angle steel (200) comprises two wing plates (210), the two wing plates (210) are perpendicular to each other, and the two wing plates (210) are both connected to the base bottom plate (100).

4. The early crack detection device for stone chip concrete according to claim 1 is characterized in that: The bottom mold support (400) is an angle steel.

5. The early crack detection device for stone chip concrete according to claim 1 is characterized in that: A rough mortar board is laid on the top of the bottom mold (500).

6. The early crack detection device for stone chip concrete according to claim 1 is characterized in that: The side plate (300) is rotatably connected to the base bottom plate (100) via a hinge (350).

7. The early cracking detection device for stone chip concrete according to claim 1 is characterized in that: At least one of the side plates (300) is provided with a plurality of through holes (330), each of the through holes (330) is penetrated by a screw rod (340), and the screw rod (340) is used to simulate the internal tension of concrete.

8. The early crack detection device for stone chip concrete according to claim 1 is characterized in that: The bottom mold (500) is a steel plate.

9. The early cracking detection device for stone chip concrete according to claim 6, characterized in that: The bottom mold support (400) includes a first abutting top portion (610), a second abutting top portion (620) and a telescopic portion (630), wherein the first abutting top portion (610) and the second abutting top portion (620) are respectively arranged at two ends of the telescopic portion (630), and one of the first abutting top portion (610) and the second abutting top portion (620) is rotatably connected to the reaction angle steel (200), and the other is rotatably connected to the side plate (300), and the telescopic portion (630) is used to control the distance between the reaction angle steel (200) and the side plate (300).

10. The early cracking detection device for stone chip concrete according to claim 1, characterized in that: The size of the first area (310) is a proportionally reduced size of a highway concrete panel.

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