Test equipment for exploring the effects of admixtures on concrete

Abstract

The present invention discloses a test device for exploring the influence of admixtures on concrete, which belongs to the field of concrete testing and detection technology. The device comprises a driving platform, a driving seat is fixed on the driving platform via the output end of a stepper motor, and a slump detection mechanism and a strength detection mechanism are provided on the outer surface of the driving seat, which are respectively used to detect the fresh mix performance and hardened performance of concrete after the admixture is added. The outer surface of the driving platform is connected to a detection drive mechanism via a stable bracket to provide driving force for the detection process. The present invention can achieve automatic and uniform mixing of admixtures and concrete and maintain their state through the synchronous swing of the slump detection slider and the adding mixing slider, thereby ensuring that when testing the fresh mix performance of concrete, the front and back intervals are too long and the fresh mix state cannot be maintained. The rebound detection arm automatically swings with the stepper motor, and the electronic rebound tester driven by the vortex track is combined to perform grid multi-point detection, thereby improving the coverage and accuracy of the concrete hardening performance detection.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete testing and detection, and in particular to testing equipment for exploring the influence of admixtures on concrete. Background Art

[0002] When the fresh mix performance and hardened performance of concrete need to adapt to the strength requirements of their respective use environments, it is often necessary to improve its performance by adding admixtures during the premixing process, such as: water reducers, which can improve the fluidity of concrete; early strength agents, which can accelerate the early strength development of concrete and shorten the setting time; air entraining agents, which can improve the frost resistance of concrete; and expansive agents, which can improve the crack resistance of concrete.

[0003] Currently, when testing the fresh performance of concrete, the ready-mixed concrete is often injected into a test cylinder, and then the test cylinder is removed. The slump height and spread area are then tested using measuring instruments. However, such traditional fresh concrete performance tests mainly rely on manual operation, which is subject to subjective judgment errors. In addition, the mixing uniformity after the admixture is added to the concrete and the state before the slump test are difficult to maintain. The lack of automated control will affect the accuracy of the data and increase the risk of test failure. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a test device for exploring the influence of admixtures on concrete.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A test device for exploring the effects of admixtures on concrete includes a drive platform for concrete testing, a drive seat fixed to the drive platform via the output end of a stepper motor, and a slump detection mechanism and a strength detection mechanism arranged on the outer surface of the drive seat in descending order. The slump detection mechanism is used to detect the fresh mix performance of concrete after the admixture is added, and the strength detection mechanism is used to detect the hardened performance of concrete after the admixture is added. The outer surface of the drive platform is connected to a detection drive mechanism via a stabilizing bracket to provide detection driving force for the slump detection mechanism and the strength detection mechanism.

[0007] The detection drive mechanism includes a drive disc fixed below the stabilizing bracket, the drive disc is provided with a collapse drive track and a collapse detection track, and a strength detection drive bar is fixedly installed at the bottom of the drive disc;

[0008] The collapse detection mechanism includes an addition box fixedly installed on the outside of the driving platform, an addition detection arm is provided on the side of the addition box close to the driving platform, a collapse detection slider is provided on the addition detection arm, the collapse detection slider is slidably connected to the driving disk through a driving connecting rod, and an addition mixing slider is provided on the side of the collapse detection slider away from the addition box.

[0009] Preferably, the stabilizing bracket is composed of upper and lower stabilizing rods, a ring-shaped stabilizing platform is fixed to the outer side of the lower stabilizing rod, and a stabilizing groove is provided on the top of the stabilizing platform to overlap with the adding box and the bottom of the stabilizing box.

[0010] Preferably, the collapse driving track consists of an extended track and an indented track, and both ends of the collapse driving track are connected to the collapse detection track.

[0011] Preferably, the bottom of the driving connecting rod is slidingly connected to the collapse driving track through a driving column, the adding mixing slider is slidingly connected to the collapse detection slider through a mixing rod, positioning magnetic strips are provided on the front and rear sides of the collapse detection slider, and the adding mixing slider is magnetically connected to the positioning magnetic strip through a positioning magnet.

[0012] Preferably, a positioning electric push rod is provided at the bottom of the adding detection arm, and the positioning electric push rod is clamped with the adding mixing slider through a positioning clamping rod.

[0013] Preferably, the collapse detection mechanism also includes resistance bars arranged on the front and rear sides of the collapse detection slider, and the resistance bars are slidingly connected to the collapse detection slider through a resistance adjustment slider. The resistance adjustment slider is rotatably connected to the side close to the adding box with an adjustment knob, and an adjustment screw is provided on one side of the adjustment knob.

[0014] Preferably, transparent detection windows are fixedly installed on the front and rear sides of the collapse detection slider, the collapse detection slider is fixedly installed with a collapse infrared detector through a mounting slide, and the mounting slide is clamped with the collapse detection slider by tightening the knob, and the additional detection arm is fixedly installed with an area detection infrared detector by bolts.

[0015] Preferably, the strength detection mechanism includes a rebound detection arm arranged on the side of the stabilization box close to the driving platform, the rebound detection arm is rotatably connected to two one-way ratchets movably connected to the strength detection driving bar through a stabilization ring, the stabilization ring is clamped with the one-way ratchet through a rotation blocking tooth, a rebound mounting seat is arranged between the two one-way ratchets, the rebound mounting seat is slidably connected to an electronic rebound tester through a rebound electric push rod, and an electronic rangefinder is arranged on the side of the stabilization bracket facing the stabilization box.

[0016] Preferably, a vortex rebound track is provided on the opposite side of the two one-way ratchets, and the vortex rebound track is slidably connected to both ends of the rebound mounting seat, and a rebound detection hole is opened on the side of the rebound mounting seat facing the stabilization box to provide a detection track for the detection rod detection process of the electronic rebound tester.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The synchronous swing of the slump detection slider and the adding and mixing slider can realize automatic and uniform mixing of admixture and concrete and maintain the state, thereby ensuring that when testing the fresh concrete performance, the interval between the front and the back is too long and the fresh state cannot be maintained. The rebound detection arm automatically swings with the stepper motor, combined with the vortex track to drive the electronic rebound hammer for grid multi-point detection, thereby improving the coverage and accuracy of concrete hardening performance testing.

[0019] 2. The electronic rebound tester automatically performs grid rebound on the sample surface under the drive of the vortex track, which can eliminate the deviation of manual point selection. At the same time, the carbonization depth of the dyed area of ​​the puncture surface of the same sample is measured through the integrated electronic rangefinder, which can realize the accurate detection of the strength of the concrete sample after curing.

[0020] 3. By completing the fresh and hardened properties of concrete from the fresh mix state to the hardened state after the addition of admixtures in a unified device, full-cycle testing can be carried out. This can conveniently and accurately determine the basic properties of concrete under the action of admixtures, providing a basis for optimizing the mix ratio of admixture addition. In addition, mixing, slump testing, rebound detection and carbonation measurement are all completed automatically through mechanical structures and sensors, minimizing the errors caused by manual testing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the test equipment proposed in the present invention for exploring the effects of admixtures on concrete;

[0022] Figure 2 This is an exploded view of the overall structure of the test equipment proposed in the present invention for investigating the effects of admixtures on concrete;

[0023] Figure 3 This is a schematic structural diagram of a slump detection mechanism in a test device for exploring the effects of admixtures on concrete proposed in the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A;

[0025] Figure 5 This is a schematic diagram of the internal structure of the cross section of the adding box in the test equipment proposed by the present invention for studying the effect of admixtures on concrete;

[0026] Figure 6 This is a schematic diagram of the structure of the strength detection mechanism in the test equipment for exploring the influence of admixtures on concrete proposed in the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the cross section of the one-way ratchet in the test equipment proposed by the present invention for studying the effects of admixtures on concrete;

[0028] Figure 8 This is a schematic diagram of the structure of the detection drive mechanism in the test equipment for exploring the effects of admixtures on concrete proposed in the present invention;

[0029] Figure 9 This is a flow chart of the test equipment proposed in the present invention for exploring the effects of admixtures on concrete.

[0030] 1. Driving platform; 11. Stabilizing bracket; 12. Driving seat; 2. Stabilizing platform; 3. Adding box; 31. Adding detection arm; 32. Collapse detection slider; 321. Positioning magnet; 322. Detection window; 33. Driving connecting rod; 331. Driving column; 34. Adding mixing slider; 341. Mixing rod; 35. Positioning electric push rod; 351. Positioning clamping rod; 36. Resistance adjustment slider; 37. Resistance bar; 38. Collapse infrared detector; 39. Area detection infrared detector; 4. Stabilizing box; 41. Rebound detection arm; 42. Stabilizing ring; 421. Rotational resistance tooth; 43. One-way ratchet; 431. Vortex rebound track; 432. Rebound mounting seat; 44. Rebound electric push rod; 45. Electronic rebound tester; 46. Electronic rangefinder; 5. Driving disk; 51. Collapse driving track; 52. Collapse detection track; 53. Strength detection driving bar. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0034] Example, see Figures 1 to 8 , a test equipment for exploring the influence of admixtures on concrete, including a driving platform 1 for concrete testing, a driving seat 12 is fixed on the driving platform 1 through the output end of a stepping motor, and a slump detection mechanism and a strength detection mechanism are sequentially arranged on the outer surface of the driving seat 12 from high to low. The slump detection mechanism is used to detect the fresh mix performance of concrete after adding admixtures, and the strength detection mechanism is used to detect the hardened performance of concrete after adding admixtures. The outer surface of the driving platform 1 is connected to a detection drive mechanism through a stable bracket 11, which provides detection driving force for the slump detection mechanism and the strength detection mechanism;

[0035] Furthermore, the stabilizing bracket 11 is composed of an upper and a lower stabilizing rod. A ring-shaped stabilizing platform 2 is fixed to the outer side of the lower stabilizing rod. A stabilizing groove is provided on the top of the stabilizing platform 2 to overlap with the bottom of the adding box 3 and the stabilizing box 4.

[0036] It should be noted that: when conducting a hardening test on concrete with the same admixture added, its fresh mix performance can be first tested through the slump detection mechanism. After it passes the test, it is cured until the time when hardening test can be performed, taken out, and placed at the detection position of the strength detection mechanism. At this time, the stepper motor is started, and the fresh mix performance and hardening performance of the concrete after the admixture is added can be tested simultaneously on the top of the driving platform 1. The curing process during the hardening of concrete is an existing technology and will not be repeated later.

[0037] like Figure 2 and Figure 8 As shown, the detection drive mechanism includes a drive disc 5 fixed below the stabilizing bracket 11, a collapse drive track 51 and a collapse detection track 52 are provided on the drive disc 5, and a strength detection drive bar 53 is fixedly installed at the bottom of the drive disc 5;

[0038] Furthermore, the collapse driving track 51 is composed of an extended track and an indented track, and both ends of the collapse driving track 51 are connected to the collapse detection track 52, so that after the admixture is mixed with the concrete, the collapse detection slider 32 can slide to the collapse detection track 52, and the limit state of the collapse detection slider 32 can be released, so that the freshly mixed concrete can collapse outward through the collapse detection slider 32, which is convenient for subsequent testing of its fresh mix performance.

[0039] It should be noted that the annular array of the collapse driving track 51 is arranged on the top of the driving disk 5. When the driving seat 12 rotates synchronously with the stepping motor, the collapse detection slider 32 can be driven to extend or retract along with the collapse driving track 51. Therefore, during the swinging process of the driving seat 12, the adding mixing slider 34 can mix the added admixture and the concrete, so that the concrete state during the detection is in the fresh state, and the concrete will not lag behind the fresh state during the detection, thereby achieving the purpose of improving the accuracy of the detection data.

[0040] When the strength test of the cured concrete specimen is carried out, the strength detection drive bar 53 contacts the one-way ratchet 43 during the swinging process, which can drive the rebound mounting seat 432 to rotate unidirectionally, so that the rebound electric push rod 44 can change the rebound position each time as the vortex rebound track 431 rotates, realizing multi-point rebound detection. Furthermore, when the same admixture is added to the concrete, its fresh mix performance and hardening performance can be tested at the same time, thereby achieving the effect of improving the test efficiency and comprehensively detecting the impact of the admixture on the concrete.

[0041] like Figures 3 to 5 As shown, the collapse detection mechanism includes an addition box 3 fixedly installed on the outside of the driving platform 1, and an addition detection arm 31 is provided on the side of the addition box 3 close to the driving platform 1. A collapse detection slider 32 is provided on the addition detection arm 31. The collapse detection slider 32 is slidingly connected to the driving disk 5 through a driving connecting rod 33, and an addition mixing slider 34 is provided on the side of the collapse detection slider 32 away from the addition box 3.

[0042] Furthermore, the bottom of the driving connecting rod 33 is slidably connected to the collapse driving track 51 through the driving column 331, and the adding mixing slider 34 is slidably connected to the collapse detection slider 32 through the mixing rod 341. The collapse detection slider 32 is provided with positioning magnetic strips on both the front and rear sides. The adding mixing slider 34 is magnetically connected to the positioning magnetic strips through the positioning magnet 321.

[0043] Furthermore, a positioning electric push rod 35 is provided at the bottom of the adding detection arm 31, and the positioning electric push rod 35 is engaged with the adding mixing slider 34 through a positioning clamping rod 351;

[0044] It should be noted that the slump detection mechanism is divided into a fresh mix state maintenance process and a fresh mix performance detection process during the detection process of the effect of admixtures on concrete. The fresh mix state maintenance process is to mix the slump detection slider 32 and the adding mixing slider 34 through the mixing rod 341 when they swing along the slump driving track 51.

[0045] A further advantage of adopting the above method is that when the admixture and concrete are in a fresh state, the positioning magnet 321 can attract the positioning magnetic strip, so that the mixing rod 341 is located in the concrete and admixture mixing area of ​​the adding box 3. Then, when the driving connecting rod 33 swings on the driving disk 5 via the driving column 331, the driving connecting rod 33 drives the slump detection slider 32 and the mixing rod 341 to synchronously mix the fresh concrete, so that the fresh concrete can be kept in the fresh state to the greatest extent during the detection.

[0046] When it is necessary to test the fresh mix performance of concrete after adding admixtures, the stepper motor drives the driving seat 12 to rotate, so that the addition detection arm 31 is located in the slump detection track 52, so that the slump detection slider 32 can move toward the driving seat 12 along with the flow of internal concrete, showing a slump state, so that the slump height and spreading area can be detected by the slump infrared detector 38 and the area detection infrared detector 39 later;

[0047] Based on the above, after the concrete and admixture are mixed, the positioning electric push rod 35 is started to drive the positioning clamping rod 351 to clamp the adding mixing slider 34, so that when the collapse detection slider 32 is attached to the adding box 3, the mixing rod 341 can be completely placed in the mixing hole groove of the collapse detection slider 32, which will not cause serious obstruction to the collapse of the concrete, so that the collapse detection slider 32 can move toward the driving seat 12 with the surface tension of the wet concrete, and be detected by the collapse infrared detector 38 and the area detection infrared detector 39.

[0048] like Figure 2 、 Figure 6 and Figure 7 As shown, the slump detection mechanism also includes resistance bars 37 arranged on the front and rear sides of the slump detection slider 32, and the resistance bars 37 are slidably connected to the slump detection slider 32 through a resistance adjustment slider 36. The resistance adjustment slider 36 is rotatably connected to the side of the adding box 3 with an adjustment knob, and an adjustment screw is provided on one side of the adjustment knob. Transparent detection windows 322 are fixedly installed on the front and rear sides of the slump detection slider 32. The slump detection slider 32 is fixedly installed with a slump infrared detector 38 through a mounting slide, and the mounting slide is clamped with the slump detection slider 32 by tightening the knob. The adding detection arm 31 is fixedly installed with an area detection infrared detector 39 by bolts.

[0049] It should be noted that when testing the fresh performance of concrete with admixtures, the slump detection slider 32 is pushed by the fresh concrete to move out of the addition box 3 until it stops. The outward movement distance of the slump detection slider 32 can be detected at the area detection infrared detector 39. The height of the concrete in the space enclosed by the slump detection slider 32 and the addition box 3 after collapse can be detected at the slump infrared detector 38. Therefore, the fresh performance of the concrete can be obtained based on the height change and the spread area of ​​the concrete before and after collapse.

[0050] Based on the above, when different admixtures are added to the adding box 3, resulting in a change in the slump height and a large slump spreading area, the knob on the resistance adjusting slider 36 is rotated to drive the threaded rod on the resistance adjusting slider 36 to rotate, so that the outward movement length of the resistance adjusting slider 36 becomes shorter, thereby squeezing the inner edge of the resistance bar 37, increasing the outward movement resistance of the slump detection slider 32, and then the slump detection range of the slump detection slider 32 can be increased by cooperating with the resistance bar 37 through the resistance adjusting slider 36;

[0051] Based on the above, a tightening knob is provided on the mounting slide. By rotating the tightening knob, the fixed plug rotatably provided on the knob can be pressed against the surface of the slump detection slider 32, thereby adjusting the position of the slump infrared detector 38. In addition, a plurality of mounting holes are provided on the additional detection arm 31, and the corresponding detection hole position can be selected according to the slump degree of the concrete.

[0052] Based on the above, an infrared radio signal transceiver is provided in the collapse infrared detector 38 and the area detection infrared detector 39. The internal infrared ranging process is the existing technology and will not be repeated here. In addition, the collapse infrared detector 38 and the area detection infrared detector 39 are set with the maximum limit threshold of the fresh concrete collapse. When the fresh concrete performance exceeds its limit threshold, the infrared radio signal in the collapse infrared detector 38 can be received normally, and the infrared radio signal in the area detection infrared detector 39 is blocked by the collapse detection slider 32 and cannot be received normally. At this time, it indicates that the fresh concrete performance is unqualified when this admixture is added.

[0053] like Figure 1 and Figure 2 As shown, the strength detection mechanism includes a rebound detection arm 41 provided on the side of the stabilizing box 4 close to the driving platform 1. The rebound detection arm 41 is rotatably connected to two one-way ratchets 43 movably connected to the strength detection driving bar 53 through a stabilizing ring 42. The stabilizing ring 42 is engaged with the one-way ratchets 43 through a rotation blocking tooth 421. A rebound mounting seat 432 is provided between the two one-way ratchets 43. The rebound mounting seat 432 is slidably connected to an electronic rebound tester 45 through a rebound electric push rod 44. An electronic rangefinder 46 is provided on the side of the stabilizing bracket 11 facing the stabilizing box 4.

[0054] Furthermore, a vortex rebound track 431 is provided on the opposite side of the two one-way ratchets 43. The vortex rebound track 431 is slidably connected to both ends of the rebound mounting seat 432. The rebound mounting seat 432 is provided with a rebound detection hole on the side facing the stabilizing box 4, providing a detection track for the detection rod detection process of the electronic rebound tester 45.

[0055] It should be noted that: when the rebound detection arm 41 swings synchronously with the swing of the stepping motor through the drive seat 12, the one-way ratchet 43 at this time will contact the bottom of the strength detection drive bar 53 and rotate clockwise, so that the two sides of the rebound mounting seat 432 are in contact with the vortex rebound track 431 and move in a vortex manner, thereby driving the detection rod of the electronic rebound tester 45 to fit the surface of the concrete sample in the stabilization box 4 to perform a multi-point rebound test, and obtain its rebound value. The electronic rangefinder 46 installed on the stabilization bracket 11 is used to obtain the carbonization degree of the puncture surface in the stabilization box 4 (the carbonization degree of concrete is obtained by chiseling the detection surface, spraying the detection reagent, and depth detection of the stained area and the non-stained area, which is the existing technology), so that the hardening performance of the concrete after curing can be accurately detected.

[0056] Working principle:

[0057] The test process of the influence of admixtures on concrete in the present invention is divided into a fresh mix performance detection process and a hardening detection process, wherein the fresh mix performance detection process consists of a fresh mix state maintenance process and a fresh mix performance detection process. The fresh mix state maintenance process is to mix the slump detection slider 32 and the adding mixing slider 34 through the mixing rod 341 when they swing with the slump driving track 51.

[0058] The fresh mix performance detection process is as follows: the slump detection slider 32 is pushed to move outside the adding box 3 by the fresh concrete until it stops, and the outward movement distance of the slump detection slider 32 can be detected at the area detection infrared detector 39. At the slump infrared detector 38, the height of the concrete after collapse in the space enclosed by the slump detection slider 32 and the adding box 3 is detected, so that the fresh mix performance of the concrete can be obtained based on the height change and spreading area before and after the concrete collapse.

[0059] The hardening performance test process is as follows: the rebound detection arm 41 swings synchronously with the swing of the stepping motor through the drive seat 12. At this time, the one-way ratchet 43 will contact the bottom of the strength detection drive bar 53 and rotate clockwise, so that the two sides of the rebound mounting seat 432 are in contact with the vortex rebound track 431 and move in a vortex manner, thereby driving the detection rod of the electronic rebound tester 45 to fit the surface of the concrete sample in the stabilization box 4 to perform a multi-point rebound test, and obtain its rebound value. The carbonization degree of the puncture surface in the stabilization box 4 is obtained through the electronic rangefinder 46 installed on the stabilization bracket 11. The carbonization degree of concrete is obtained by chiseling the detection surface, spraying the detection reagent, and depth detection of the stained area and the non-stained area. This is an existing technology, which can accurately detect the hardening performance of the concrete after curing.

[0060] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A test apparatus for investigating the effect of admixtures on concrete, comprising a driving platform (1) for concrete testing, characterized in that: A driving seat (12) is fixed on the driving platform (1) via the output end of the stepping motor. A slump detection mechanism and a strength detection mechanism are sequentially arranged on the outer surface of the driving seat (12) from high to low. The slump detection mechanism is used to detect the fresh performance of concrete after adding admixtures, and the strength detection mechanism is used to detect the hardening performance of concrete after adding admixtures. The outer surface of the driving platform (1) is connected to a detection driving mechanism via a stabilizing bracket (11) to provide detection driving force for the slump detection mechanism and the strength detection mechanism. The detection drive mechanism comprises a drive disc (5) fixed below the stabilizing bracket (11), a collapse drive track (51) and a collapse detection track (52) being provided on the drive disc (5), a strength detection drive bar (53) being fixedly mounted on the bottom of the drive disc (5), the collapse drive track (51) being composed of an extended track and an indented track, and both ends of the collapse drive track (51) being connected to the collapse detection track (52); The slump detection mechanism comprises an addition box (3) fixedly mounted on the outside of the driving platform (1); an addition detection arm (31) is provided on the side of the addition box (3) close to the driving platform (1); a slump detection slider (32) is provided on the addition detection arm (31); the slump detection slider (32) is slidably connected to the driving disk (5) via a driving connecting rod (33); and an addition mixing slider (34) is provided on the side of the slump detection slider (32) away from the addition box (3); The bottom of the driving connecting rod (33) is slidably connected to the collapse driving track (51) via a driving column (331); the adding and mixing slider (34) is slidably connected to the collapse detection slider (32) via a mixing rod (341); positioning magnetic strips are provided on both the front and rear sides of the collapse detection slider (32); the adding and mixing slider (34) is magnetically connected to the positioning magnetic strips via a positioning magnet (321); a positioning electric push rod (35) is provided at the bottom of the adding detection arm (31); the positioning electric push rod (35) is clamped to the adding and mixing slider (34) via a positioning clamping rod (351); When testing the fresh performance of concrete admixtures, the slump detection slider (32) is pushed by the fresh concrete to move out of the addition box (3) until it stops. The outward movement distance of the slump detection slider (32) can be detected at the area detection infrared detector (39), and the height of the concrete after collapse in the space enclosed by the slump detection slider (32) and the addition box (3) can be detected at the slump infrared detector (38).

2. The test equipment for exploring the influence of admixtures on concrete according to claim 1, characterized in that: The stabilizing bracket (11) is composed of an upper stabilizing rod and a lower stabilizing rod. A ring-shaped stabilizing platform (2) is fixed to the outer side of the lower stabilizing rod. A stabilizing groove is provided on the top of the stabilizing platform (2) and is overlapped with the bottom of the adding box (3) and the stabilizing box (4).

3. The test equipment for exploring the influence of admixtures on concrete according to claim 1, characterized in that: The collapse detection mechanism further comprises resistance bars (37) arranged on both sides of the collapse detection slider (32), the resistance bars (37) being slidably connected to the collapse detection slider (32) via a resistance adjustment slider (36), the resistance adjustment slider (36) being rotatably connected to an adjustment knob on one side close to the adding box (3), and an adjustment screw being arranged on one side of the adjustment knob.

4. The test equipment for exploring the influence of admixtures on concrete according to claim 1, characterized in that: Transparent detection windows (322) are fixedly mounted on both the front and rear sides of the collapse detection slider (32). A collapse infrared detector (38) is fixedly mounted on the collapse detection slider (32) via a mounting slide, and the mounting slide is engaged with the collapse detection slider (32) by tightening a knob. An area detection infrared detector (39) is fixedly mounted on the additional detection arm (31) via a bolt.

5. The test equipment for exploring the influence of admixtures on concrete according to claim 1, characterized in that: The strength detection mechanism comprises a rebound detection arm (41) arranged on a side of the stabilizing box (4) close to the driving platform (1); the rebound detection arm (41) is rotatably connected to two one-way ratchets (43) movably connected to the strength detection driving bar (53) through a stabilizing ring (42); the stabilizing ring (42) is engaged with the one-way ratchets (43) through a rotation blocking tooth (421); a rebound mounting seat (432) is arranged between the two one-way ratchets (43); the rebound mounting seat (432) is slidably connected to an electronic rebound tester (45) through a rebound electric push rod (44); and an electronic rangefinder (46) is arranged on the side of the stabilizing bracket (11) facing the stabilizing box (4).

6. The test equipment for exploring the influence of admixtures on concrete according to claim 5, characterized in that: A vortex rebound track (431) is provided on opposite sides of the two one-way ratchets (43), and both ends of the vortex rebound track (431) and the rebound mounting seat (432) are slidably connected. A rebound detection hole is provided on the side of the rebound mounting seat (432) facing the stabilizing box (4), providing a detection track for the detection rod detection process of the electronic rebound tester (45).

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