UHPC Performance Test Device and Test Method Applicable to Steel Bridge Deck Pavement

Abstract

The present invention relates to the technical field of ultra-high performance concrete test, and discloses a UHPC performance test device applicable to steel bridge deck paving, which comprises a base, a test tank and a support part. The test tank is arranged on the top of the base. The first end of the test tank is hinged to the first end of the base. The test tank has a pouring cavity with the cavity opening facing upwards. The bottom of the support part is movably connected to the second end of the base, and the top of the support part is movably connected to the second end of the test tank, so as to keep a predetermined angle between the bottom surface of the test tank and the top surface of the base. Based on the above structure, it is possible to simulate the bridge deck structure with the predetermined longitudinal and transverse slopes, continuously measure the thickness of the pouring layer of the test tank from its second end to its first end at a certain time interval, that is, the thickness of the pouring layer from the high side to the low side, and evaluate the fluidity and engineering applicability of the ultra-high performance concrete through the thickness deviation between the high and low sides, so as to determine whether the ultra-high performance concrete can meet the design requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-high performance concrete tests, and particularly to a UHPC performance test device suitable for steel bridge deck paving. The present invention also relates to a test method for the working performance of UHPC. Background Art

[0002] Due to its advantages such as good toughness, excellent mechanical properties, good durability, and long service life, UHPC (Ultra-High Performance Concrete) has been increasingly widely used in the engineering industry. In order to facilitate mixing, pouring, and on-site paving, certain requirements are put forward for the performance of UHPC mixtures in engineering construction. Currently, the research on the performance of UHPC mixtures mainly focuses on the direction of improving its fluidity and reducing its viscosity. For different structural forms, construction environments, and construction techniques in engineering, the requirements for UHPC performance will vary. Many structures and projects require UHPC to have good fluidity, low viscosity, and achieve self-compacting performance. The corresponding test devices and performance test methods generally include: the slump flow meter method, the L-type tester method, the U-type tester method, the J-ring slump flow tester method, etc.

[0003] However, in the application scenario of paving on steel bridge decks with fully paved steel studs and dense steel bar meshes and having a certain slope, not only corresponding requirements need to be put forward for the fluidity of UHPC materials, but also requirements for its volume stability in a semi-infinite space need to be considered. One cannot one-sidedly pursue a large fluidity or low viscosity of "self-leveling". Otherwise, the UHPC will flow from the high side to the low side due to the slope of the paving, resulting in a too thin paving layer thickness on the high side, thus leading to uneven paving thickness of the steel bridge deck. Therefore, for this kind of paving application scenario, the fluidity and viscosity of UHPC should be controlled within a range matching the on-site working conditions, so that it can maintain a uniform thickness and stability meeting the design requirements on a steel bridge deck designed with a certain longitudinal slope, transverse slope, or longitudinal and transverse slopes.

[0004] Currently, the existing test devices are mostly used for the shear strength test of UHPC, and there is no test device dedicated to testing the working performance of UHPC on bridge bodies with different slopes. Utility Model Content

[0005] The purpose of the present invention is to provide a UHPC performance test device suitable for steel bridge deck paving that can simulate bridge decks with different slopes, can simulate different steel structure bridge decks, and can test the fluidity and viscosity of UHPC.

[0006] To achieve the above object, the present invention provides a UHPC performance test device, which includes:

[0007] A base;

[0008] The test tank is provided at the top of the base. The first end of the test tank is hinged to the first end of the base. The test tank has a pouring cavity with the cavity opening facing upwards.

[0009] The supporting part, the bottom of the supporting part is movably connected to the second end of the base, and the top of the supporting part is movably connected to the second end of the test tank, so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base.

[0010] In some embodiments of the present application, the supporting part is a universal foot cup. The universal foot cup includes a bottom bracket, a movable ball head provided on the bottom bracket, a screw rod provided on the movable ball head, and a nut sleeved on the screw rod. The bottom bracket is provided on the base. The second end of the test tank has a connection hole, and the test tank is movably sleeved on the screw rod through the connection hole. The nut abuts against the bottom of the test tank, so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base.

[0011] In some embodiments of the present application, two supporting parts are provided. The two supporting parts are arranged along the width direction of the base. The number of the connection holes is equal to and corresponds to the number of the supporting parts one by one. The connection holes are provided outside the pouring cavity.

[0012] In some embodiments of the present application, it further includes a first spirit level. The first spirit level is provided on the test tank and extends along the width direction of the test tank.

[0013] In some embodiments of the present application, the bottom wall of the pouring cavity has a plurality of mounting holes, and the steel structure model can be inserted into the mounting holes.

[0014] In some embodiments of the present application, it further includes the steel structure model. The bottom of the steel structure model has a positioning part corresponding to the mounting hole, and the positioning part is inserted into the mounting hole to connect the steel structure model and the test tank.

[0015] In some embodiments of the present application, the length of the positioning part matches the depth of the mounting hole, so that the bottom surface of the steel structure model fits the bottom wall of the pouring cavity.

[0016] In some embodiments of the present application, part or all of the side walls of the test tank are made of transparent materials.

[0017] In some embodiments of the present application, the base includes a bottom plate, a second spirit level, a third spirit level, and a plurality of adjusting supports. The supporting portion is disposed on the top surface of the second end of the bottom plate, the test tank is hinged to the top surface of the first end of the bottom plate, the second spirit level is disposed on the top surface of the bottom plate and extends along the length direction of the bottom plate, the third spirit level is disposed on the top surface of the bottom plate and extends along the width direction of the bottom plate, and the plurality of adjusting supports are evenly distributed at the bottom of the bottom plate.

[0018] In some embodiments of the present application, the predetermined angle is 0° to 35°.

[0019] Another object of the present invention is also to provide a test method for the working performance of UHPC, which includes the following steps:

[0020] Insert the steel structure model into the installation hole through the positioning portion;

[0021] Pour a predetermined volume of ultra-high performance concrete into the pouring cavity of the test tank to form a concrete paving layer;

[0022] Adjust the height of the nut sleeve on the screw rod so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base;

[0023] Obtain the thickness values of the concrete paving layers at the first end and the second end of the test tank, and calculate the deviation value between the two.

[0024] In some embodiments of the present application, before the step of inserting the steel structure model into the installation hole through the positioning portion, the following steps are further included:

[0025] Change the height of the adjusting support to keep the bottom plate horizontal;

[0026] Adjust the height of the nut sleeve on the screw rod to keep the test tank horizontal.

[0027] The present invention provides a UHPC performance test device suitable for steel bridge deck paving. Compared with the prior art, its beneficial effects are as follows:

[0028] The UHPC performance test device suitable for steel bridge deck pavement provided by the present invention includes a base, a test tank, and a support part. The test tank is arranged on the top of the base. The first end of the test tank is hinged to the first end of the base. The test tank has a pouring cavity with the cavity opening facing upwards. The bottom of the support part is movably connected to the second end of the base, and the top of the support part is movably connected to the second end of the test tank, so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base. Based on the above structure, ultra-high performance concrete with a certain volume and thickness is poured into the pouring cavity. According to the bridge deck structure with a predetermined slope to be simulated, the test tank is rotated around its first end to form a corresponding predetermined angle with the base, and the second end of the test tank is supported by the support part to maintain this predetermined angle, so as to simulate the bridge deck structure with the predetermined longitudinal and transverse slopes. At this time, the thickness of the pouring layer from the second end to the first end of the test tank is continuously measured at a certain time interval, that is, the thickness of the pouring layer from the high side to the low side. The fluidity and engineering applicability of the ultra-high performance concrete are evaluated through the thickness deviation between the high and low sides, so as to determine whether the ultra-high performance concrete can meet the design requirements. That is to say, different from the common test method for testing the shear strength of ultra-high performance concrete, this UHPC performance test device can evaluate the UHPC performance from the perspective of thickness deviation by simulating the bridge deck structure with a predetermined slope, thereby establishing a UHPC performance test method. The test results can be quantified, and it can be more intuitively and conveniently observed whether the ultra-high performance concrete under test is suitable for the bridge deck structure with the predetermined slope.

[0029] In addition, the present invention also provides a test method for the working performance of UHPC, which evaluates the fluidity and engineering applicability of UHPC through the deviation value of the thickness on both the high and low sides of the ultra-high performance concrete paving layer, which is more intuitive and simpler, and the operation difficulty of this method is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the UHPC performance test device according to the embodiment of the present invention;

[0031] Figure 2 is the structural schematic diagram of the UHPC performance test device according to the embodiment of the present invention;

[0032] Figure 3 is the top view schematic diagram of the UHPC performance test device according to the embodiment of the present invention.

[0033] In the figure: 1. Base; 11. Bottom plate; 12. Second spirit level; 13. Third spirit level; 14. Adjusting support; 2. Test tank; 21. Pouring cavity; 211. Installation hole; 22. Connection hole; 23. First spirit level; 24. Side wall; 3. Support part; 31. Bottom support; 32. Movable ball head; 33. Screw; 34. Nut; 4. Steel structure model; 41. Positioning part. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0035] It should be understood that in the description of the present application, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 thus cannot be understood as a limitation to the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. That is, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, unless otherwise stated, the meaning of "plural" is two or more.

[0036] It should be noted that in the description of the present application, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0037] As Figures 1 to 3 shown, the embodiment of the present invention provides a UHPC performance test device applicable to steel bridge deck pavement, which includes a base 1, a test tank 2, and a support part 3. The test tank 2 is arranged on the top of the base 1. The first end of the test tank 2 is hinged to the first end of the base 1. The test tank 2 has a pouring cavity 21, and the opening of the pouring cavity 21 faces upward. The bottom of the support part 3 is movably connected to the second end of the base 1, and the top of the support part 3 is movably connected to the second end of the test tank 2, so that a predetermined angle is maintained between the bottom surface of the test tank 2 and the top surface of the base 1.

[0038] Based on the above structure, ultra-high performance concrete with a certain volume and thickness is poured into the pouring cavity 21. According to the bridge deck structure with a predetermined slope to be simulated, the test tank 2 is rotated around its first end to a corresponding predetermined angle with respect to the base 1, and the second end of the test tank 2 is supported by the support portion 3 to maintain this predetermined angle, thereby simulating the bridge deck structure with the predetermined longitudinal and transverse slopes. At this time, the thickness of the pouring layer from the second end to the first end of the test tank 2 is continuously measured at certain time intervals, that is, the thickness of the pouring layer from the high side to the low side. The fluidity and engineering applicability of the ultra-high performance concrete are evaluated through the thickness deviation between the high and low sides, so as to determine whether the ultra-high performance concrete can meet the design requirements. That is to say, different from the common test method for measuring the shear strength of ultra-high performance concrete, this UHPC performance test device can evaluate the UHPC performance from the perspective of thickness deviation by simulating the bridge deck structure with a predetermined slope, thereby establishing a UHPC performance test method. Its test results can be quantified, and it can be more intuitively and conveniently observed whether the ultra-high performance concrete used in the test is suitable for the bridge deck structure with the predetermined slope.

[0039] Optionally, as Figure 1 and Figure 2 shown, in this embodiment, the support portion 3 is a universal foot cup. The universal foot cup includes a base 31, a movable ball head 32 provided on the base 31, a screw 33 provided on the movable ball head 32, and a nut 34 sleeved on the screw 33. The base 31 is provided on the base 1. The second end of the test tank 2 has a connection hole 22. The test tank 2 is movably sleeved on the screw 33 through the connection hole 22. The nut 34 abuts against the bottom of the test tank 2 so that a predetermined angle is maintained between the bottom surface of the test tank 2 and the top surface of the base 1. Based on this, since the nut 34 abuts against the bottom of the test tank 2, the second end of the test tank 2 can be supported at different positions on the screw 33, thereby realizing that a predetermined angle is maintained between the bottom surface of the test tank 2 and the top surface of the base 1. Secondly, by adjusting the position of the nut 34 on the screw 33, the angle between the bottom surface of the test tank 2 and the top surface of the base 1 can be accurately adjusted. In addition, due to the high flexibility of the movable ball head 32, when the support portion 3 is a universal foot cup, the tester can more conveniently and quickly adjust the angle of the test tank 2 without affecting the rotation of the test tank 2.

[0040] Of course, the support portion 3 can also be other devices such as a telescopic rod, a flipping member, or a rocker arm that can support the test tank 2 to flip and maintain a predetermined angle with the base 1, such as a setting form of setting a motor to drive the flipping member to flip.

[0041] Specifically, as Figure 1 and Figure 3As shown, in this embodiment, there are two supporting parts 3, that is, there are two universal casters. The two supporting parts 3 are arranged along the width direction of the base 1. The number of connecting holes 22 is equal to that of the supporting parts 3 and they correspond one by one. The connecting holes 22 are arranged outside the casting cavity 21. Based on this, on the one hand, the two supporting parts 3 can play a stable supporting role for the test tank 2; on the other hand, by adjusting the positions of the nuts 34 on the two screws 33, the height of the second end of the test tank 2 can be changed to simulate the bridge deck structure with a predetermined longitudinal and transverse slope. That is, this UHPC performance test device can simulate the bridge deck structure with a predetermined longitudinal and transverse slope, and its simulation degree is closer to the actual paving application scenario. In addition, since the connecting holes 22 are arranged outside the casting cavity 21, specifically, the connecting holes 22 are located on the bottom wall of the test tank 2 outside the side wall 24 of the test tank 2. That is, the connection part between the supporting part 3 and the test tank 2 is located outside the casting cavity 21. Therefore, when casting, the side wall 24 of the test tank 2 plays a role of blocking, preventing the ultra-high performance concrete from contacting the supporting part 3 and affecting the rotation of the test tank 2.

[0042] Optionally, as Figure 1 and Figure 2 shown, in this embodiment, this UHPC performance test device further includes a first spirit level 23. The first spirit level 23 is arranged on the test tank 2 and extends along the width direction of the test tank 2. In this way, the second end of the test tank 2 can be leveled by observing the first spirit level 23. Specifically, by adjusting the position of the nut 34 and observing the first spirit level 23, the leveling of the test tank 2 can be achieved.

[0043] Optionally, as Figure 2 shown, considering that for the paving application scenario on a steel structure bridge deck with steel stud bolts and a dense steel bar mesh laid and a smoother contact surface, it is more necessary to evaluate the performance of ultra-high performance concrete. In this embodiment, the bottom wall of the casting cavity 21 has a plurality of mounting holes 211, and the steel structure model 4 can be inserted into the mounting holes 211 so that the steel structure model 4 is firmly installed in the casting cavity 21. Based on this, the steel structure model 4 with steel stud bolts of different spacings and different densities of steel bar meshes can be inserted into the mounting holes 211 and installed in the casting cavity 21, and a certain volume of ultra-high performance concrete is poured into the casting cavity 21. Thus, by measuring the thickness, the fluidity of the ultra-high performance concrete can be observed to evaluate the engineering applicability of the ultra-high performance concrete on the steel structure bridge deck with different steel stud bolts and different dense steel bar meshes. That is, this UHPC performance test device can further form a simulation environment closer to the actual application scenario, so that the test results are more accurate.

[0044] Preferably, the UHPC test device further includes a steel structure model 4. The bottom of the steel structure model 4 has a positioning portion 41 corresponding to the mounting hole 211. The positioning portion 41 is inserted into the mounting hole 211 to connect the steel structure model 4 and the test tank 2. Based on this, the steel structure model can be fabricated and replaced according to the actual engineering structure to better fit the specific application scenario, making the simulation environment more realistic.

[0045] Further, the length of the positioning portion 41 matches the depth of the mounting hole 211, so that the bottom surface of the steel structure model 4 is in contact with the bottom wall of the casting cavity 21. Based on this, it is convenient to pour UHPC and further form a simulation environment close to the actual cast steel bridge deck.

[0046] Optionally, as Figure 1 and Figure 2 shown, in order to facilitate the observation and measurement of the casting layer, in this embodiment, part or all of the side walls 24 of the test tank 2 are made of a transparent material. Of course, the bottom wall of the test tank 2 can also be made of a transparent material. In this way, it is convenient to observe and measure the casting layer and improve the accuracy of measurement.

[0047] Optionally, as Figure 1 shown, in this embodiment, the base 1 includes a bottom plate 11, a second spirit level 12, a third spirit level 13, and a plurality of adjusting supports 14. The supporting portion 3 is provided on the top surface of the second end of the bottom plate 11, and the test tank 2 is hinged to the top surface of the first end of the bottom plate 11. The second spirit level 12 is provided on the top surface of the bottom plate 11 and extends along the length direction of the bottom plate 11. The third spirit level is provided on the top surface of the bottom plate 11 and extends along the width direction of the bottom plate 11. The plurality of adjusting supports 14 are evenly distributed on the bottom of the bottom plate 11. Based on this, by adjusting the height of the adjusting supports 14 while observing the second spirit level 12 and the third spirit level 13, the bottom plate 11 can be leveled so that the bottom plate 11 always remains on a horizontal plane, making the test results more accurate.

[0048] Optionally, as Figure 1 shown, considering that the slope of the bridge is generally designed in the range of 0% - 6%, in this embodiment, the predetermined angle is 0° - 35°. In this way, the test tank 2 can cover and simulate steel bridge decks with all common predetermined slopes.

[0049] The embodiment of the present invention also provides a test method for the working performance of UHPC, which includes the following steps:

[0050] S1. Insert the steel structure model 4 into the mounting hole 211 through the positioning portion 41;

[0051] S2. Pour a predetermined volume of ultra-high performance concrete into the pouring cavity 21 of the test tank 2. Specifically, calculate the amount of ultra-high performance concrete according to a predetermined thickness and mix it. On this basis, 1 to 2 L of materials can be added to compensate for the mixing loss. After mixing, pour the ultra-high performance concrete into the pouring cavity 21 to form a concrete paving layer;

[0052] S3. Adjust the height of the adjusting nut 34 sleeved on the screw rod 33 so that a predetermined angle is maintained between the bottom surface of the test tank 2 and the top surface of the base 1, thereby simulating a steel bridge deck structure with a predetermined slope and laid with steel stud bolts and a dense steel bar mesh;

[0053] S4. Obtain the thickness values of the concrete paving layer at the first end and the second end of the test tank 2, and calculate the deviation value between the two. Specifically, repeat the measurement of the thickness value of the concrete paving layer at the first end of the test tank 2, that is, the thickness value of the low side, and measure the thickness value of the concrete paving layer at the second end of the test tank 2, that is, the thickness value of the high side, at intervals of a predetermined time. Each measurement takes at least two values and calculates their average value. Obtain the deviation value between the high side and the low side through the average thickness value of the high side and the average thickness value of the low side. When five identical deviation values are continuously obtained, measure the final actual deviation value. Compare the actual deviation value with the allowable deviation value of the ultra-high performance concrete paving layer thickness in the actual project. If it is within the allowable deviation value range, the tested ultra-high performance concrete is applicable to the paving of this actual project. If the actual deviation value exceeds the allowable deviation value range, it can be known that the ultra-high performance concrete tested in this test has poor engineering applicability to this actual project and has too large fluidity.

[0054] Optionally, in this embodiment, before step S1, the following steps are further included:

[0055] S01. Change the height of the adjusting support 14 to keep the bottom plate 11 horizontal. Specifically, change the height of the adjusting support 14 and observe the second spirit level 12 and the third spirit level 13 to keep the bottom plate 11 horizontal, so that this UHPC performance test device can be used on inclined planes and uneven surfaces, and the reliability is higher;

[0056] S02. Adjust the height of the adjusting nut 34 sleeved on the screw rod 33 and observe the first spirit level 23 to keep the test tank 2 horizontal. Based on this, the test can be made more standardized and the test results can be more accurate through leveling before the test.

[0057] Since the test method and the UHPC performance test device used in this experiment evaluate the fluidity and engineering applicability of UHPC through the deviation value of the thickness on the high and low sides, it is more intuitive and simpler, with lower operation difficulty. It can not only truly simulate the steel bridge deck structure with fully laid steel stud bolts and dense steel reinforcement meshes in actual projects by installing a steel structure model, but also simulate the longitudinal slope and transverse slope of the steel bridge deck by applying universal foot cups, so that the simulation results are closer to the actual application scenarios, and thus the test results are more accurate.

[0058] In summary, the embodiment of the present invention provides a UHPC performance test device suitable for steel bridge deck paving, which mainly consists of a base 1, a test tank 2 and a support part 3. The test tank 2 is arranged on the top of the base 1. The first end of the test tank 2 is hinged to the first end of the base 1. The test tank 2 has a pouring cavity 21 with the cavity opening facing upwards. The bottom of the support part 3 is movably connected to the second end of the base 1, and the top of the support part 3 is movably connected to the second end of the test tank 2, so that a predetermined angle is maintained between the bottom surface of the test tank 2 and the top surface of the base 1. Compared with the prior art, this UHPC performance test device has the advantages of being able to simulate bridge decks with different slopes, being able to simulate steel structure bridge decks, and being able to test the fluidity and viscosity of UHPC, etc.

[0059] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A test method for the performance of UHPC using a UHPC performance device applicable to steel bridge deck paving, characterized in that, The UHPC performance device applicable to steel bridge deck paving includes: A base; A test tank, provided at the top of the base. The first end of the test tank is hinged to the first end of the base. The test tank has a casting cavity with the cavity opening facing upward; A support part, the bottom of the support part is movably connected to the second end of the base, and the top of the support part is movably connected to the second end of the test tank, so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base; The bottom wall of the casting cavity has a plurality of mounting holes, and the steel structure model can be inserted into the mounting holes; The UHPC performance device applicable to steel bridge deck paving further includes the steel structure model. The bottom of the steel structure model has a positioning part corresponding to the mounting holes, and the positioning part is inserted into the mounting holes to connect the steel structure model and the test tank; The base includes a bottom plate, a second spirit level, a third spirit level and a plurality of adjusting supports. The support part is provided on the top surface of the second end of the bottom plate. The test tank is hinged to the top surface of the first end of the bottom plate. The second spirit level is provided on the top surface of the bottom plate and extends along the length direction of the bottom plate. The third spirit level is provided on the top surface of the bottom plate and extends along the width direction of the bottom plate. The plurality of adjusting supports are evenly distributed at the bottom of the bottom plate; The test method for UHPC performance is: inserting the steel structure model into the mounting holes through the positioning part; Pouring a predetermined volume of ultra-high performance concrete into the casting cavity of the test tank to form a concrete paving layer; Adjusting the height of the nut sleeved on the screw rod so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base; Obtaining the thickness values of the concrete paving layers at the first end and the second end of the test tank and calculating the deviation value between the two; Before the step of inserting the steel structure model into the mounting holes through the positioning part, changing the height of the adjusting support to keep the bottom plate horizontal, and adjusting the height of the nut sleeved on the screw rod to keep the test tank horizontal.

2. The test method for UHPC performance according to claim 1, wherein: The support part is a universal foot cup. The universal foot cup includes a bottom bracket, a movable ball head provided on the bottom bracket, a screw rod provided on the movable ball head, and a nut sleeved on the screw rod. The bottom bracket is provided on the base. The second end of the test tank has a connection hole, and the test tank is movably sleeved on the screw rod through the connection hole. The nut abuts against the bottom of the test tank so that a predetermined angle is maintained between the bottom surface of the test tank and the top surface of the base.

3. The test method for UHPC performance according to claim 2, wherein: Two support parts are provided, and the two support parts are arranged along the width direction of the base. The number of connection holes is equal to and corresponds to the number of support parts one by one, and the connection holes are provided outside the casting cavity.

4. The test method for UHPC performance according to claim 3, wherein: It further includes a first spirit level, and the first spirit level is provided on the test tank and extends along the width direction of the test tank.

5. The test method for the UHPC performance according to claim 1, wherein: Part or all of the side walls of the test tank are made of transparent materials.

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