A device for detecting concrete working performance and a method of using the same

Abstract

The present invention provides a device for detecting the working performance of concrete and a method for using the same. The test platform frame is a square frame. A steel bar main reinforcement test piece is arranged in the test platform frame in the horizontal direction. The two ends of the steel bar main reinforcement test piece are respectively led out from the connecting grooves on the two opposite side walls of the test platform frame. The steel bar main reinforcement test piece outside the connecting groove is screwed with a main reinforcement connecting nut. A steel bar stirrup test piece is arranged above the steel bar main reinforcement test piece in the horizontal direction perpendicular to the steel bar main reinforcement test piece. The two ends of the steel bar stirrup test piece are respectively led out from the connecting grooves on the other two opposite side walls of the test platform frame. The two ends of the steel bar stirrup test piece are respectively screwed with stirrup connecting nuts. A concrete pouring frame is arranged right above the test platform frame. The slump cylinder is fixed on the concrete pouring frame in the vertical direction. This solves the problem that the existing concrete slump detection method can no longer meet the requirements of on-site detection. It belongs to the field of construction engineering and mechanical technology.

Description

Technical Field

[0001] The invention relates to a device for detecting the working performance of concrete and a use method thereof, belonging to the technical field of construction engineering and machinery. Background Art

[0002] Concrete is the most basic building material for construction projects, and its quality directly determines the quality of the entire project. Existing concrete performance testing methods include slump, expansion, expansion time, etc. For structural projects other than underwater concrete, the slump method is generally used for testing. Due to the unreasonable design of concrete mix ratio, poor adaptability of water reducer and cementitious materials, unreasonable sand ratio, etc., the concrete consistency will increase, become sticky, the slump time will be long, and the segregation will be capped. Although the slump is qualified, the concrete cannot pass through the outer steel mesh after entering the mold, and the flow is slow and the pile is hardened. In order to facilitate construction, workers can only use vibrators to drag and tamp for a long time or add water at will, causing concrete segregation and water seepage, which seriously affects the quality of the project entity. Especially for municipal subway station projects, the steel bars are dense and the spacing between steel bars is small. The existing concrete slump detection method can no longer meet the on-site detection requirements. Summary of the invention

[0003] The invention provides a device for detecting the working performance of concrete and a use method thereof, so as to solve the problem that the existing concrete slump detection method can no longer meet the requirements of on-site detection.

[0004] In order to solve the above problems, it is proposed to adopt a device for detecting the working performance of concrete, including a slump cylinder, a concrete pouring frame and a test platform frame. The test platform frame is a square frame with supporting legs arranged at the bottom of the four corners. The side walls on the opposite sides of the test platform frame are provided with connecting grooves in a horizontal direction opposite to each other. The main reinforcement test piece is arranged in the test platform frame in a horizontal direction. The two ends of the main reinforcement test piece are respectively led out from the connecting grooves on the two opposite side walls of the test platform frame, and the main reinforcement connecting nuts are screwed on the main reinforcement test piece outside the connecting grooves. A stirrup test piece is arranged above the main reinforcement test piece in a horizontal direction perpendicular to the main reinforcement test piece. The two ends of the stirrup test piece are respectively led out from the connecting grooves on the other two opposite side walls of the test platform frame, and the two ends of the stirrup test piece are respectively screwed with stirrup connecting nuts. The concrete pouring frame is arranged directly above the test platform frame, and the slump cylinder is fixed on the concrete pouring frame vertically.

[0005] The aforementioned device further includes a concrete plug plate, the concrete pouring frame is also a square frame, the bottom of the slump cylinder extends to the middle of the concrete pouring frame, and the outer wall of the slump cylinder is fixedly connected to the concrete pouring frame through a connecting rod arranged transversely and distributed along the circumference, the concrete plug plate is arranged with the bottom of the slump cylinder in the transverse direction, and a guide groove is opened on the side wall of the concrete pouring frame, and the concrete plug plate is arranged to slide in the transverse direction along the guide groove;

[0006] In the aforementioned device, the specific connection method between the concrete pouring frame 2 and the test platform frame 6 is as follows: there are raised connecting pins 5 at the four corners of the upper end of the test platform frame 6, and connecting holes matching the size of the connecting pins 5 are opened at the four corners of the bottom of the concrete pouring frame 2 corresponding to the connecting pins 5. The concrete pouring frame 2 is placed from top to bottom on the upper end of the test platform frame 6, and the corresponding connecting holes at the four corners are all sleeved on the connecting pins 5 to achieve the connection and limiting of the concrete pouring frame 2 and the test platform frame 6.

[0007] The method of use is as follows: ① Select the same main reinforcement test piece and stirrup test piece according to the requirements of the drawings, adjust the spacing between the main and stirrup test pieces, and tighten the main reinforcement connecting nuts and stirrup connecting nuts; ② Adjust the platform level adjustment nuts to make the platform level and stable; ③ Insert the concrete plug plate; ④ Connect the concrete pouring frame to the test platform frame through the connecting pin; ⑤ Fill the slump bucket with concrete three times, insert and tamp each layer 15 times, and level it; ⑥ Pull out the concrete plug plate, the concrete falls naturally, and immediately lift the concrete pouring frame upwards to separate the concrete pouring frame from the test platform frame below; ⑦ Observe whether the concrete can pass through the steel mesh smoothly.

[0008] Compared with the prior art, the device of the present invention can simulate the construction conditions of concrete on site when designing the concrete mix ratio, and intuitively show the state of concrete passing through the dense steel mesh, which makes up for the shortcomings of the traditional slump detection of concrete working performance and is more in line with actual requirements. During the concrete construction, the working state of the concrete before entering the mold can be detected to avoid the phenomenon of workers dragging and tamping the concrete for a long time and adding water artificially due to the pile-up and caking of concrete on the steel mesh, thereby ensuring the quality of the physical project, reducing the labor intensity of the workers and saving construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0010] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0011] Example

[0012] Refer to the attached Figure 1The present embodiment provides a device for detecting the working performance of concrete, comprising a slump cylinder 1, a concrete pouring frame 2 and a test platform frame 6. The test platform frame 6 is a square frame with supporting legs at the bottom of the four corners. The side walls on the opposite sides of the test platform frame 6 are provided with connecting grooves 61 in a horizontal direction in pairs. A main reinforcement test piece 7 is arranged in the test platform frame 6 in a horizontal direction. The two ends of the main reinforcement test piece 7 are respectively led out from the connecting grooves 61 on the two opposite side walls of the test platform frame 6, and the main reinforcement connecting nuts 9 are screwed on the main reinforcement test piece 7 outside the connecting grooves 61. A stirrup test piece 8 is arranged above the main reinforcement test piece 7 in a horizontal direction perpendicular to the main reinforcement test piece 7. The two ends of the stirrup test piece 8 are respectively led out from the connecting grooves 61 on the other two opposite side walls of the test platform frame 6, and the two ends of the stirrup test piece 8 are respectively screwed with stirrup connecting nuts 10. The concrete pouring frame 2 is set directly above the test platform frame 6, and the slump cylinder 1 is fixed on the concrete pouring frame 2 in a vertical direction.

[0013] The concrete pouring frame 2 is also a square frame. The four corners of the bottom of the concrete pouring frame 2 are connected to the four corners of the upper end of the test platform frame 6 through connecting pins 5. The specific connection method is: the four corners of the upper end of the test platform frame 6 have raised connecting pins 5, and the four corners of the bottom of the concrete pouring frame 2 are corresponding to the connecting pins 5. Connecting holes matching the size of the connecting pins 5 are opened. The concrete pouring frame 2 is placed on the upper end of the test platform frame 6 from top to bottom, and the corresponding connecting holes at the four corners are all sleeved on the connecting pins 5 to realize the connection and limiting of the concrete pouring frame 2 and the test platform frame 6. The bottom of the slump cylinder 1 extends to the middle of the concrete pouring frame 2, and the outer wall of the slump cylinder 1 is fixedly connected to the concrete pouring frame 2 through a connecting rod arranged transversely along the circumferential direction. The concrete plug plate 3 is arranged transversely with the bottom of the slump cylinder 1, and a guide groove 4 is opened on the side wall of the concrete pouring frame 2. The concrete plug plate 3 is arranged to slide transversely along the guide groove 4. The four supporting legs of the test platform frame 6 are all height-adjustable structures. The platform level adjustment nut 11 can be installed at the bottom of the supporting leg to facilitate the adjustment of the horizontal state of the platform.

[0014] When in use, ① select the same main reinforcement test piece 7 and stirrup test piece 8 according to the requirements of the drawings, adjust the spacing between the main and stirrup test pieces, and tighten the main reinforcement connecting nuts 9 and stirrup connecting nuts 10; ② adjust the platform level adjustment nuts 11 to make the platform level and stable; ③ insert the concrete plug 3; ④ the concrete pouring frame 2 is connected to the test platform frame 6 through the connecting pin 5; ⑤ fill the slump bucket 1 with concrete three times, insert and tamp each layer 15 times, and smooth it; ⑥ pull out the concrete plug 3, the concrete falls naturally, and immediately lift the concrete pouring frame 2 upwards to separate the concrete pouring frame 2 from the test platform frame 6 below; ⑦ observe whether the concrete can pass through the steel mesh smoothly.

[0015] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the working performance of concrete, characterized in that: The invention comprises a slump cone (1), a concrete pouring frame (2) and a test platform frame (6). The test platform frame (6) is a square frame with support legs arranged at the bottom of the four corners. The side walls of the test platform frame (6) are provided with connecting grooves (61) in a transverse direction in pairs. A main reinforcement test piece (7) is arranged in the test platform frame (6) in a transverse direction. The two ends of the main reinforcement test piece (7) are respectively led out from the connecting grooves (61) on the two side walls of the test platform frame (6). The main reinforcement test piece (7) outside the connecting grooves (61) is provided with a connecting groove (61). A main reinforcement connection nut (9) is screwed on, a steel stirrup test piece (8) is arranged above the steel main reinforcement test piece (7) in a transverse direction perpendicular to the steel main reinforcement test piece (7), two ends of the steel stirrup test piece (8) are respectively led out from connection grooves (61) on two opposite side walls of the test platform frame (6), and stirrup connection nuts (10) are screwed on the two ends of the steel stirrup test piece (8), a concrete pouring frame (2) is erected directly above the test platform frame (6), and a slump cylinder (1) is vertically fixed on the concrete pouring frame (2); It also includes a concrete plug plate (3), the concrete pouring frame (2) is also a square frame, the bottom of the slump cylinder (1) extends to the middle of the concrete pouring frame (2), and the outer wall of the slump cylinder (1) is fixedly connected to the concrete pouring frame (2) through a connecting rod that is distributed in the circumferential direction and arranged transversely, the concrete plug plate (3) is arranged with the bottom of the slump cylinder (1) in the transverse direction, and a guide groove (4) is opened on the side wall of the concrete pouring frame (2), and the concrete plug plate (3) is arranged to slide in the transverse direction along the guide groove (4); The concrete pouring frame (2) and the test platform frame (6) are specifically connected in the following manner: the four corners of the upper end of the test platform frame (6) are provided with protruding connection pins (5); the four corners of the bottom of the concrete pouring frame (2) corresponding to the connection pins (5) are provided with connection holes matching the size of the connection pins (5); the concrete pouring frame (2) is placed from top to bottom on the upper end of the test platform frame (6), and the corresponding connection holes at the four corners are all sleeved on the connection pins (5), so as to realize the connection and position limiting of the concrete pouring frame (2) and the test platform frame (6).

2. The method for using the device according to claim 1, characterized in that: The specific method is as follows: ① Select the same main reinforcement test piece (7) and stirrup test piece (8) according to the requirements of the drawings, adjust the spacing between the main reinforcement and stirrup test pieces, and tighten the main reinforcement connection nuts (9) and stirrup connection nuts (10); ② Adjust the platform level adjustment nuts (11) to make the platform level and stable; ③ Insert the concrete plug plate (3); ④ The concrete pouring frame (2) is connected to the test platform frame (6) through the connecting pin (5); ⑤ Fill the slump barrel (1) with concrete three times, and tamp each layer 15 times to make it flat; ⑥ Pull out the concrete plug plate (3), the concrete falls naturally, and immediately lift the concrete pouring frame (2) upward to separate the concrete pouring frame (2) from the test platform frame (6) below; ⑦ Observe whether the concrete can pass through the steel mesh smoothly.

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