Mortar and concrete admixture compatibility test device

Abstract

The utility model discloses a mortar and concrete admixture compatibility test device, which comprises an upper mortar expansion degree test cylinder and a lower mortar expansion degree test cylinder, a small opening of the upper mortar expansion degree test cylinder is connected with a small opening of the lower mortar expansion degree test cylinder, and a reverse conical cylinder is arranged on the upper portion of the lower mortar expansion degree test cylinder. The compatibility test device for the mortar and the concrete admixture does not need auxiliary experiments of multiple persons and can be operated by one person, the mortar injection efficiency is improved by the upper mortar expansion degree test cylinder at the upper part of the device, and the mortar overflowing along the extension of the cylinder wall can be prevented from flowing to a glass plate at the bottom by the reverse conical cylinder on the lower mortar expansion degree test cylinder; and the test accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of building material measurement, in particular to a mortar and concrete admixture compatibility test device. Background Art

[0002] Admixture compatibility testing is used to determine the compatibility of concrete admixtures based on admixture dosage, mortar expansion, and time loss. It can also be used to determine material changes. Appendix A of GB50119-2013, "Rapid Test Method for Compatibility of Concrete Admixtures," primarily utilizes raw materials (cement, mineral admixtures, fine aggregate, and other admixtures) actually used in engineering projects and replaces the cement paste flowability method with the mortar expansion method. Cement paste or mortar expansion is a measure of the fluidity of cement paste or mortar. Cement paste or mortar diffusion is the ability of a flowing cement paste or mortar to flow in its naturally packed state. To measure the spread of cement paste or mortar, conventional methods typically involve placing a mortar spread cylinder in a truncated cone mold in the center of a baseplate. A fixed amount of cement paste or mortar is then poured into the mold, which is then lifted vertically upward. After the mortar has flowed for a specified period of time, the maximum diameter of the flowing portion in two mutually perpendicular directions is measured with a ruler. The average value is then used as the spread of the cement paste or mortar. Rapid testing of concrete admixture compatibility using a conventional mortar spread cylinder in a truncated cone mold typically requires two people to assist in the test. Furthermore, as the mortar is poured, some mortar is left behind along the outside of the cylinder wall, potentially affecting test accuracy during cleaning. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a convenient and accurate mortar and concrete admixture compatibility test device.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a mortar and concrete admixture compatibility test device, the admixture compatibility test device includes an upper mortar expansion test cylinder and a lower mortar expansion test cylinder connected with two small openings, wherein the upper part of the lower mortar expansion test cylinder is provided with a reverse cone cylinder.

[0005] Furthermore, a reverse cone is provided above the lower mortar expansion test cylinder to form an integrated cone.

[0006] Furthermore, the upper mortar expansion test tube and the lower mortar expansion test tube are fixedly connected or detachably connected.

[0007] Furthermore, the wall thickness of the lower mortar expansion test tube is 2-20 mm, the upper inner diameter d is 50±0.5 mm, the lower inner diameter D is 100±0.5 mm, and the height h is 150±0.5 mm.

[0008] Furthermore, the included angle between the connection line of the barrel end and the barrel bottom of the reverse conical barrel and the horizontal plane is 35 - 50°.

[0009] Furthermore, the position where the barrel end of the reverse conical barrel is located is at 1 / 2 - 1 / 3 of the height of the lower mortar spread test barrel.

[0010] Furthermore, the height of the barrel bottom of the reverse conical barrel does not exceed the height where the upper diameter of the lower mortar spread test barrel is located.

[0011] Furthermore, the weight of the reverse conical barrel is 500 - 1000 g. The reverse conical barrel can be used as a self - weight tool, which can effectively improve the stability of the test under the operation of one person. On the other hand, it can be used as a receiving tool to prevent the slurry overflowing along the barrel wall from flowing to the bottom glass plate.

[0012] Furthermore, the lower diameter of the upper mortar spread test barrel is 1 / 2 of the lower diameter of the reverse conical barrel.

[0013] Furthermore, the inner diameter of the upper opening of the upper mortar spread test barrel is slightly less than 50 mm, that is, slightly less than the inner diameter of the upper opening of the lower mortar spread test barrel, and the width of the upper opening of the upper mortar spread test barrel is greater than the wall thickness of the lower mortar spread test barrel. The mortar spread test barrel can be used as a funnel, placed reversely at the barrel end of the lower mortar spread test barrel, which can increase the self - weight of the test barrel, more effectively improve the pouring efficiency of the slurry, and at the same time can be used as a scraper to level the surface of the slurry.

[0014] The beneficial effects of the present utility model are as follows: The mortar and concrete admixture compatibility test device of the present utility model does not require the assistance of multiple people for the experiment and can be operated by one person. The upper mortar spread test barrel on the upper part of the device improves the mortar injection efficiency, and the reverse conical barrel on the lower mortar spread test barrel can prevent the slurry overflowing along the barrel wall from flowing to the bottom glass plate, thus improving the accuracy of the test. Description of the Drawings

[0015] Figure 1 is the upper mortar spread test barrel of Embodiment 1;

[0016] Figure 2 is the lower mortar spread test barrel of Embodiment 1;

[0017] Figure 3 is the admixture compatibility test device of Embodiment 1;

[0018] In the figure, the markings are: 1 - upper mortar spread test cylinder, 11 - upper opening of the upper mortar spread test cylinder, 12 - lower opening of the upper mortar spread test cylinder, 2 - lower mortar spread test cylinder, 21 - upper opening of the lower mortar spread test cylinder, 22 - lower opening of the lower mortar spread test cylinder, 3 - reverse conical cylinder, 31 - end of the reverse conical cylinder, 32 - bottom of the reverse conical cylinder, 33 - angle between the connection line of the end and the bottom of the reverse conical cylinder and the horizontal plane, 4 - admixture compatibility test device. Detailed implementation mode

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] As Figure 1 , Figure 2 , Figure 3 As shown in, a mortar and concrete admixture compatibility test device of the present utility model, the admixture compatibility test device includes an upper mortar spread test cylinder 1 and a lower mortar spread test cylinder 2 with their small openings connected, and a reverse conical cylinder 3 is provided on the upper part of the lower mortar spread test cylinder 2. A reverse conical cylinder 3 is provided above the lower mortar spread test cylinder 2 to form an integrated conical cylinder; the wall thickness of the lower mortar spread test cylinder 2 is 2 - 20 mm, the inner diameter d of the upper opening is 50 ± 0.5 mm, the inner diameter D of the lower opening is 100 ± 0.5 mm, and the height h is 150 ± 0.5 mm. The angle 33 between the connection line of the end 31 and the bottom 32 of the reverse conical cylinder is 35 - 50°; the position where the end 31 of the reverse conical cylinder 3 is located is at 1 / 2 - 1 / 3 of the height of the lower mortar spread cylinder; the height of the bottom 32 of the reverse conical cylinder 3 does not exceed the height of the upper opening of the lower mortar spread cylinder 2; the weight of the reverse conical cylinder 3 is 500 - 1000 g.

[0021] The upper mortar spread test cylinder 1 and the lower mortar spread test cylinder 2 are fixedly connected or detachably connected. The diameter of the lower opening of the upper mortar spread test cylinder 1 is 1 / 2 of the diameter of the lower opening of the reverse conical cylinder. The inner diameter of the upper opening of the upper mortar spread test cylinder 1 is slightly less than 50 mm.

[0022] Embodiment:

[0023] As Figure 1 , Figure 2 , Figure 3As shown in the figure, a compatibility test device for mortar and concrete admixtures. The admixture compatibility test device includes an upper mortar spread test cylinder 1 and a lower mortar spread test cylinder 2 with their small openings connected. A reverse conical cylinder 3 is provided at the upper part of the lower mortar spread test cylinder 2. A reverse conical cylinder 3 is provided above the lower mortar spread test cylinder 2 to form an integral conical cylinder. The wall thickness of the lower mortar spread test cylinder 2 is 2 - 20 mm, the inner diameter d of the upper opening is 50 ± 0.5 mm, the inner diameter D of the lower opening is 100 ± 0.5 mm, and the height h is 150 ± 0.5 mm. The angle 33 between the line connecting the cylinder end 31 and the cylinder bottom 32 of the reverse conical cylinder and the horizontal plane is 35 - 50°. The position where the cylinder end 31 of the reverse conical cylinder 3 is located is at 1 / 2 - 1 / 3 of the height of the lower mortar spread cylinder. The height of the cylinder bottom 32 of the reverse conical cylinder 3 does not exceed the height of the upper opening of the lower mortar spread cylinder 2. The weight of the reverse conical cylinder 3 is 500 - 1000 g.

[0024] The upper mortar spread test cylinder 1 and the lower mortar spread test cylinder 2 are fixedly connected or detachably connected. The diameter of the lower opening of the upper mortar spread test cylinder 1 is 1 / 2 of the diameter of the lower opening of the reverse conical cylinder. The inner diameter of the upper opening of the upper mortar spread test cylinder 1 is slightly less than 50 mm.

[0025] During the test, the admixture compatibility test device 4 is used for testing. On the one hand, the reverse conical cylinder 3 can be used as a self-weight tool, which can effectively improve the stability of the test under the operation of one person. On the other hand, it can be used as a receiving tool to prevent the slurry flowing out along the cylinder wall from flowing to the bottom glass plate. At the same time, the upper mortar spread test cylinder 1 can be used as a funnel, placed reversely at the cylinder end of the lower mortar spread test cylinder 2, which can increase the self-weight of the test cylinder, more effectively improve the pouring efficiency of the slurry, and can also be used as a scraper to level the surface of the slurry.

Claims

1. A compatibility test device for mortar and concrete admixtures, characterized in that: The admixture compatibility test device includes an upper mortar spread test cylinder and a lower mortar spread test cylinder with their small openings connected. A reverse conical cylinder is provided at the upper part of the lower mortar spread test cylinder.

2. The compatibility test device for mortar and concrete admixture according to claim 1, characterized in that: A reverse conical cylinder is provided above the lower mortar spread test cylinder to form an integrated conical cylinder.

3. A compatibility test device for mortar and concrete admixtures according to claim 1, characterized in that: The upper mortar spread test cylinder and the lower mortar spread test cylinder are fixedly connected or detachably connected.

4. A compatibility test device for mortar and concrete admixtures according to claim 1, characterized in that: The wall thickness of the lower mortar spread test cylinder is 2 - 20 mm, the inner diameter d of the upper opening is 50 ± 0.5 mm, the inner diameter D of the lower opening is 100 ± 0.5 mm, and the height h is 150 ± 0.5 mm.

5. The compatibility test device for mortar and concrete admixture according to claim 1, wherein: The angle between the connection line of the cylinder end and the cylinder bottom of the reverse conical cylinder and the horizontal plane is 35 - 50°.

6. The compatibility test device for mortar and concrete admixtures according to claim 1, characterized in that: The position where the cylinder end of the reverse conical cylinder is located is at 1 / 2 - 1 / 3 of the height of the lower mortar spread cylinder.

7. An apparatus for testing the compatibility of mortar and concrete admixtures according to claim 1, characterized in that: The height of the cylinder bottom of the reverse conical cylinder does not exceed the height where the upper opening of the lower mortar spread cylinder is located.

8. The compatibility test device for mortar and concrete admixtures according to claim 1, characterized in that: The weight of the reverse conical cylinder is 500 - 1000 g.

9. The compatibility test device for mortar and concrete admixtures according to claim 1, characterized in that: The diameter of the lower opening of the upper mortar spread test cylinder is 1 / 2 of the diameter of the lower opening of the reverse conical cylinder.

10. The compatibility test device for mortar and concrete admixtures according to claim 1, characterized in that: The inner diameter of the upper opening of the upper mortar spread test cylinder is slightly less than 50 mm.

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