Sample preparation device for cement mortar wear resistance test

Abstract

The utility model relates to a sample preparation device for a cement mortar wear resistance test. The device is suitable for the technical field of cement mortar wear resistance test auxiliary equipment. According to the technical scheme, the sample preparation device for the cement mortar wear resistance test is characterized by being provided with a cover die, a cavity used for being filled with cement mortar is formed in the top face of the cover die, a positioning plate is installed at the position, corresponding to the cavity, of the cover die, and a lineation groove is formed in the positioning plate. Thus, when the cement mortar test mold provided with the cover mold is placed on the table top of a vibration table, cement mortar is loaded into the cover mold, the positioning plate is installed on the cover mold, and a worker can conveniently insert a knife into the marking groove in the positioning plate so as to carry out cement mortar marking operation on a cement mortar sample, so that the worker can conveniently operate the cement mortar test mold, and the working efficiency is improved. And meanwhile, the precision is relatively high.

Description

Technical Field

[0001] The utility model relates to a sample preparation device for cement mortar wear resistance test, and is applicable to the technical field of cement mortar wear resistance test auxiliary equipment. Background Art

[0002] The cement-sand ratio of the cement mortar wear resistance test specimen is 1:2.5, and the water-cement ratio is 0.44. Each sample needs to be molded into 3 specimens, which are stirred and molded separately. Each molded specimen should weigh 400g of cement, 1000g of natural quartz sand, and 176mL of water. The effective volume of the test mold cavity for the specimen is 150mm×150mm×30mm.

[0003] When mixing cement mortar, first add water to the pot, then add cement, put the pot on a fixed stand, and then start the machine immediately. After stirring at a low speed for 30 seconds, add quartz sand evenly at the beginning of the second 30 seconds. Stop stirring for 90 seconds, and use a rubber scraper to scrape the mortar on the blades and the pot wall into the pot within the first 15 seconds. Continue stirring at high speed for 60 seconds. The time error of each stage shall not exceed 1 second.

[0004] While the mortar is being stirred, clamp the test mold and mold sleeve in the center of the vibration table, and evenly load all the mixed mortar into the test mold. Start the vibration table, and start scratching the mortar with a knife after about 10 seconds. Make regular horizontal and vertical scratches 14 times each. In addition, use a knife to scratch the four corners of the specimen 10 times respectively. The entire tamping work should be completed within 90 seconds.

[0005] At present, when a knife is used to scratch the mortar horizontally and vertically, the positions of the 14 scratches are usually distinguished by naked eye observation. The equal division is not precise enough, which affects the accuracy of the test results. Utility Model Content

[0006] The technical problem to be solved by the utility model is: in order to solve the above technical problem, the utility model provides a sample preparation device for cement mortar wear resistance test.

[0007] The technical solution adopted by the utility model is: a sample preparation device for cement mortar wear resistance test, characterized in that: it has a sleeve mold, a cavity for filling cement mortar is opened on the top surface of the sleeve mold, a positioning plate is installed at a position corresponding to the cavity on the sleeve mold, and a scribing groove is opened on the positioning plate. In this way, when the cement mortar test mold equipped with the sleeve mold is placed on the table of the vibration table, the cement mortar is loaded into the sleeve mold, and the positioning plate is installed on the sleeve mold, so that it is convenient for personnel to insert a knife into the scribing groove on the positioning plate to scribing the cement mortar sample, which is not only convenient for personnel to operate, but also has high precision.

[0008] Positioning grooves are formed on the top surface of the sleeve mold at the positions around the cavity, and positioning blocks that match the positioning grooves are arranged on the positioning plate installed on the sleeve mold at positions corresponding to the positioning grooves. In this way, when the positioning plate is installed on the sleeve mold, the positioning blocks on the positioning plate match the positioning grooves on the sleeve mold, so that the positioning plate can be easily positioned and installed on the sleeve mold.

[0009] A handle is installed on the positioning plate, so that it is convenient for people to take the positioning plate.

[0010] The sleeve mold is made of iron, and the positioning plate is made of organic glass. In this way, it is convenient for personnel to place the positioning plate on the sleeve mold and check the condition of the cement mortar when performing the glue stripping operation on the cement mortar in the sleeve mold.

[0011] The chamber has a length of 150 mm, a width of 150 mm and a depth of 30 mm.

[0012] A clamping block is fixedly installed at the bottom of the sleeve mold, so that the sleeve mold can be conveniently installed on the cement mortar test mold.

[0013] The beneficial effects of the utility model are as follows: the utility model installs the sleeve mold on the cement mortar test mold, and places the cement mortar in the cavity of the sleeve mold. A positioning plate with a scoring groove is installed at a position corresponding to the cavity on the sleeve mold, and the positioning plate is installed on the sleeve mold through the cooperation of the positioning block on the positioning plate and the positioning groove on the sleeve mold, so that it is convenient for personnel to use a knife to pass through the positioning groove to score the cement mortar in the sleeve mold cavity; in the utility model, by using a positioning plate made of organic glass, it is convenient for personnel to check the state of the cement mortar when scoring the cement mortar. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : The structural schematic diagram of the sleeve mold in the utility model.

[0015] Figure 2 : The structural schematic diagram of the positioning plate in the utility model.

[0016] In the figure: 1. die set; 2. clamping block; 3. positioning groove; 4. positioning plate; 5. positioning block; 6. marking groove; 7. handle. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0018] This embodiment is a sample preparation device for cement mortar wear resistance test.

[0019] In this embodiment, there is a sleeve mold 1, a cavity for filling cement mortar is formed on the top surface of the sleeve mold 1, and a clamping block 2 is fixedly installed on the bottom surface of the sleeve mold 1. In this way, when the sleeve mold 1 is clamped on the cement mortar test mold on the vibration table, the clamping block 2 on the sleeve mold 1 is tightly connected to the cement mortar test mold.

[0020] In this embodiment, a chamber for filling cement mortar is provided on the top surface of the sleeve mold 1, and the length of the chamber is 150 mm, the width is 150 mm, and the depth is 30 mm. Positioning grooves 3 are provided on the top surface of the sleeve mold 1 at the positions around the chamber, and the positioning grooves 3 arranged around the chamber are square as a whole. A positioning plate 4 is installed on the sleeve mold 1, and a marking groove 6 is provided on the positioning plate 4. In this way, after the cement mortar is filled into the chamber of the sleeve mold 1, the positioning plate 4 is installed on the sleeve mold 1, so that it is convenient for personnel to hold a knife and pass the knife through the marking groove 6 on the positioning plate 4 to perform the cement mortar marking operation in the chamber.

[0021] In this embodiment, a positioning block 5 is installed on the bottom surface of the positioning plate 4 at a position corresponding to the positioning groove 3 on the sleeve mold 1. In this way, under the cooperation of the positioning block 5 on the positioning plate 4 and the positioning groove 3 on the sleeve mold 1, it is convenient to quickly install the positioning plate 4 on the sleeve mold 1.

[0022] In this embodiment, in order to facilitate personnel to take and place the positioning plate 4 , handles 7 are fixedly installed at both sides of the positioning plate 4 .

[0023] In this embodiment, there are fourteen scoring grooves 6, which are arranged in a zigzag shape, and two adjacent scoring grooves 6 are connected to each other, and the width of the scoring grooves 6 is 2 mm. In this way, it is convenient for personnel to move the knife along the scoring grooves 6.

[0024] In this embodiment, the sleeve mold 1 is made of iron material, and the positioning plate 4 is made of organic glass. In this way, when the positioning plate 4 is installed on the sleeve mold 1, it is convenient for personnel to check the state of cement mortar in the sleeve mold 1 through the transparent positioning plate 4.

[0025] The method of using this embodiment is:

[0026] When mixing mortar, first add water to the pot, then add cement, put the pot on a fixed stand, and then start the machine immediately. After stirring at a low speed for 30 seconds, add quartz sand evenly at the beginning of the second 30 seconds. Stop stirring for 90 seconds, and use a rubber scraper to scrape the mortar on the blades and the pot wall into the pot within the first 15 seconds. Continue stirring at high speed for 60 seconds. The time error of each stage shall not exceed 1 second.

[0027] While the mortar is being stirred, the cement mortar test mold is placed at the center of the vibration table, the sleeve mold 1 is clamped on the cement mortar test mold, and the clamping block 2 on the sleeve mold 1 is tightly and firmly attached to the cement mortar test mold;

[0028] Put the mixed cement mortar into the sleeve mold 1;

[0029] The staff holds the handle 7 on the positioning plate 4 and moves the positioning plate 4 onto the sleeve mold 1, and makes the positioning block 5 on the positioning plate 4 fall into the positioning groove 3 on the sleeve mold 1;

[0030] Start the vibration table, and start scratching the cement mortar with a knife after about 10 seconds. First, scratch horizontally 14 times along the scoring groove 6, then lift the positioning plate 4, rotate the positioning plate 4 horizontally 90°, place the positioning plate 4 on the sleeve mold 1, and make the positioning convex edge 5 fall into the positioning groove 3, and then scratch vertically 14 times along the scoring groove 6;

[0031] Use a knife to insert 10 times at the four corners of the cement mortar in the sleeve mold 1.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sample preparation device for cement mortar wear resistance test, characterized in that: The invention comprises a sleeve mold (1), a cavity for filling cement mortar is provided on the top surface of the sleeve mold (1), a positioning plate (4) is installed at a position corresponding to the cavity on the sleeve mold (1), and a marking groove (6) is provided on the positioning plate (4).

2. The sample preparation device for cement mortar wear resistance test according to claim 1, characterized in that: Positioning grooves (3) are formed on the top surface of the sleeve mold (1) at positions around the cavity, and positioning blocks (5) that cooperate with the positioning grooves (3) are arranged on a positioning plate (4) installed on the sleeve mold (1) at positions corresponding to the positioning grooves (3).

3. The sample preparation device for cement mortar wear resistance test according to claim 1, characterized in that: A handle (7) is mounted on the positioning plate (4).

4. The sample preparation device for cement mortar wear resistance test according to claim 1, characterized in that: The sleeve mold (1) is made of iron, and the positioning plate (4) is made of organic glass.

5. The sample preparation device for cement mortar wear resistance test according to claim 1, characterized in that: The chamber has a length of 150 mm, a width of 150 mm and a depth of 30 mm.

6. The sample preparation device for cement mortar wear resistance test according to claim 1, characterized in that: A clamping block (2) is fixedly mounted on the bottom of the sleeve mold (1).

7. The sample preparation device for cement mortar wear resistance test according to claim 1, characterized in that: The marking grooves (6) are arranged in a zigzag shape, and two adjacent marking grooves (6) are connected to each other.

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