CN206223613U - Concrete anti-seepage test piece sleeve and anti-permeability performance detection means - Google Patents

Abstract

The utility model discloses a concrete anti-seepage test piece cover. The concrete anti-seepage test piece set is a hollow structure, and a micro-expansion sealing layer is arranged between the hollow inner wall of the hollow structure and the anti-seepage test piece. The micro-expansion sealing layer is set between the impermeable test piece and the impermeable test piece cover, and micro-expansion occurs during the test process, which increases the binding force on the test piece and ensures the tightness of the impermeable test piece and the impermeable test piece cover. The seal effectively reduces the water seepage around the impervious test piece, improves the sealing effect, is easy to operate, does not require heating, and has no pollution to the environment.

Description

Concrete impermeability test kit and impermeability testing device

technical field

The utility model relates to the technical field of building material detection, in particular to a concrete impermeability test piece set and an impermeability detection device.

Background technique

Concrete is an artificial building material widely used in construction. For some buildings, the concrete used in buildings is required to have specific impermeability properties. The concrete impermeability tester is mainly used for the test of the impermeability of concrete and the determination of the impermeability label. At the same time, it can also be used for the measurement and quality inspection of the air permeability of building materials. Therefore, it is widely used in production, construction, design, teaching and research and other fields. . The traditional anti-seepage instrument comes with an anti-seepage test set. Before pressing the concrete anti-seepage test piece into the anti-seepage test set, it is necessary to apply a sealing layer on the outer surface of the anti-seepage test piece. The purpose of applying the sealing layer is to make the anti-seepage The outer surface of the seepage test piece is completely sealed with the inner wall of the impervious test set, so that there will be no marginal leakage during the process of testing the applied water pressure. The traditional and commonly used method of applying the sealing layer is: apply the melted mixture of paraffin wax and rosin or use a triangular knife to evenly scrape the mixture of butter and talcum powder on the outer surface of the impervious test piece. This kind of sealing material is easy to leak when water is injected and pressurized, and the success rate of the test is low. Moreover, this kind of material needs to be melted at high temperature before it can be used. healthy.

Utility model content

Based on this, the utility model aims to overcome the defects of the prior art and provide a concrete impermeability test piece set and an impermeability detection device.

Its technical scheme is as follows:

A concrete anti-seepage test set, the concrete anti-seepage test set is a hollow structure, and a micro-expansion sealing layer is provided between the hollow inner wall of the hollow structure and the anti-seepage test piece. The micro-expansion sealing layer is set between the impermeable test piece and the impermeable test piece cover, and micro-expansion occurs during the test process, which increases the binding force on the test piece and ensures the tightness of the impermeable test piece and the impermeable test piece cover. The seal effectively reduces the water seepage around the impervious test piece, improves the sealing effect, is easy to operate, does not require heating, and has no pollution to the environment.

In one of the embodiments, the concrete impermeability test set is a hollow cylindrical structure. The anti-seepage test set adopts a cylindrical structure with the same upper and lower circumferences instead of the traditional circular platform structure with a wide bottom and a narrow top. In existing buildings, it is not necessary to pour, demould and maintain the core samples drilled on site, simplifying It eliminates the reprocessing process of sampling concrete core samples, facilitates the operation of inspectors, reduces the labor intensity of inspectors, and avoids the distortion or failure of test results caused by the difference between the test operation, the core sample and the impermeability of cast-in-place concrete. ; At the same time, because the core sample does not need to be molded and maintained again, the detection cycle is shortened. Similarly, the concrete impermeability test piece set can not only be used in existing buildings, but also can be popularized and used in the detection of concrete test pieces of new buildings, only the concrete of new buildings needs to be directly formed into cylindrical anti-seepage test pieces That's it.

In one of the embodiments, one end of the concrete impermeability test set is provided with an annular shoulder, and the annular shoulder is provided with evenly distributed bolt holes along the circumferential direction. The anti-seepage test piece set is connected with the chassis bolts on the anti-seepage instrument through the bolt holes on the shoulder of the ring, so that it is fixed on the upper part of the chassis. In one of the embodiments, the cylindrical structure is integrally formed with the annular shoulder. The process is simple, the production is convenient, and the consumables are less.

In one embodiment, the annular shoulder is provided with six evenly distributed bolt holes along the circumferential direction. The concrete impermeability test set is fastened to the upper part of the chassis through six bolt connections.

In one of the embodiments, the size of the concrete anti-seepage test piece set matches the size of the concrete anti-seepage test piece. The existing building concrete anti-seepage test piece can be pressed into the anti-seepage test piece set without secondary pouring.

In one embodiment, the micro-expansion sealing layer is a osmotic crystalline waterproof structure formed by interpenetrating polymer film layers and hardened cement. The permeable crystalline waterproof structure can be firmly bonded with the outer layer of cement and other materials, and its penetration depth is small, which does not affect the impermeability of the specimen. In addition, the micro-expansion sealing layer also includes an expansion material, which can cause micro-expansion in the hydration process of the inorganic powder and increase the binding force of the anti-seepage test piece. The micro-expansion sealing layer has good sealing and bonding strength, which improves the sealing and compression resistance of the impermeability test.

The anti-seepage performance detection device adopting the concrete anti-seepage test piece cover as in any of the above embodiments includes: an anti-seepage instrument, a chassis and an anti-seepage test piece cover, the chassis is arranged on the top of the anti-seepage instrument, and the anti-seepage test piece The sleeve is fastened to the upper part of the chassis by bolt connection.

In one of the embodiments, there are 6 test positions evenly distributed on the chassis. It can be used for 6 anti-seepage test pieces to test the anti-seepage performance at the same time.

In one of the embodiments, the six test positions are arranged in two rows and three columns along the length direction of the chassis.

The beneficial effects of the utility model are:

The micro-expansion sealing layer is set between the impermeable test piece and the impermeable test piece cover, and micro-expansion occurs during the test process, which increases the binding force on the test piece and ensures the tightness of the impermeable test piece and the impermeable test piece cover. The seal effectively reduces the water seepage around the impervious test piece, improves the sealing effect, is easy to operate, does not require heating, and has no pollution to the environment.

The anti-seepage test set adopts a cylindrical structure with the same upper and lower circumferences instead of the traditional circular platform structure with a wide bottom and a narrow top. In existing buildings, there is no need to pour, demould and maintain the core samples drilled on site, which simplifies The reprocessing process of sampling the concrete core sample facilitates the operation of the inspectors, reduces the labor intensity of the inspectors, and avoids the distortion or failure of the test results caused by the test operation, the difference between the core sample and the impermeability of the cast-in-place concrete; At the same time, since the core sample does not need to be molded and maintained again, the detection cycle is shortened. Similarly, the concrete impermeability test piece set can not only be used in existing buildings, but also can be popularized and used in the detection of concrete test pieces of new buildings, only the concrete of new buildings needs to be directly formed into cylindrical anti-seepage test pieces That's it.

The cylindrical structure and the ring shoulder are integrally formed, the process is simple, the production is convenient, and the consumables are less.

Description of drawings

Fig. 1 is a schematic diagram of the utility model anti-seepage test piece loading mold;

Fig. 2 is a three-dimensional view of the anti-seepage test piece cover of the utility model;

Fig. 3 is a schematic plan view of the anti-seepage performance testing device of the present invention.

Description of reference signs: 1-concrete impermeability test set, 2-impermeability test piece, 3-micro-expansion sealing layer, 4-ring shoulder, 5-bolt hole, 6-impermeability instrument, 7-chassis, 8-Digital display water pressure gauge.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the utility model, and do not limit the protection scope of the utility model.

As shown in Figure 1-2, a concrete impermeability test set 1, the impermeability test set 1 is a hollow cylinder structure, the cylindrical structure is integrally formed, the size of the impermeability test set 1 is related to the impermeability Specimen 2 was matched in size. Aggregate is a granular loose material that acts as a skeleton or filling in concrete. Aggregate, as the main raw material in concrete, plays the role of skeleton and support in the building, and the aggregate particle size is the diameter of the aggregate particle. Nowadays, commercial concrete is used in most housing construction projects. Usually, the aggregate particle size is controlled below 31.5mm, and the aggregate particle size is small, so the size of the impermeability test piece can be appropriately reduced. In this embodiment, the impermeability test piece 2 has a diameter of 150mm and a height of 150mm, instead of the traditional round table test piece of 185mm×175mm×150mm, the weight of the test piece is reduced by about 31%, which facilitates the operation of the testing personnel and effectively reduces the Labor intensity of inspectors. Moreover, in actual engineering application, the size of the anti-seepage test piece set 1 and the anti-seepage test piece 2 can be adjusted according to the actual situation of the aggregate particle size. The outer diameter of the cylindrical structure of the anti-seepage test piece set 1 matching the size of the anti-seepage test piece 2 is 170mm, and the thickness of the anti-seepage test piece set 1 is 8mm.

The micro-expansion sealing layer 3 is arranged between the anti-seepage test piece 2 and the anti-seepage test piece set 1 . The micro-expansion sealing layer 3 is a osmotic crystalline waterproof structure formed by interpenetrating polymer film layers and cement hardened body. The active solvent is used as the carrier, and its active ingredients can penetrate into the tiny cracks in the outer cement of impermeability test piece 2 and produce chemical reactions, and bond firmly with the outer cement and other materials to form a layer of crystalline and dense waterproof layer, which can penetrate The depth is within 2mm of the surface of the impermeability test piece, and does not affect the impermeability of the test piece. The material ratio of the micro-expansion sealing layer 3 is: K11 waterproof coating liquid material: superfine cement: micro-expansion agent = 9:25:2.8. The organic polymer emulsion in the K11 waterproof coating liquid material loses water and becomes a cohesive and continuous film layer. The cement absorbs the water in the emulsion and hardens. The polymer film layer and the cement hardened body penetrate each other and form a firm bond. A solid waterproof layer. The micro-expansion sealing layer 3 is also added with a micro-expansion agent, and an appropriate amount of micro-expansion agent produces micro-expansion during the cement hardening process, which increases the binding force of the anti-seepage test piece 2 . This kind of micro-expansion material has good sealing and bonding strength, which improves the sealing and compressive capacity of the impermeability test. After testing, the compressive property can reach more than 2.0Mpa.

One end of the impermeability test piece set 1 is provided with an annular shoulder 4, and the annular shoulder 4 is integrally formed with the cylindrical structure. The thickness of the annular shoulder 4 is 15mm. The annular shoulder 4 is provided with six bolt holes 5 evenly distributed along the circumferential direction.

Example 2

As shown in Figure 3, the anti-seepage performance detection device adopting the concrete anti-seepage test piece set of the above embodiment includes: an anti-seepage meter 6, a chassis 7 and an anti-seepage test piece set 1, and the chassis 7 is arranged on the anti-seepage meter Top 6, test position is established on the chassis 7. After the anti-seepage test piece 2 is pressed into the anti-seepage test piece set 1, it is placed in the test position on the chassis 7 of the anti-seepage instrument 6, and the anti-seepage test piece set 1 passes through the bolt hole 5 on the ring shoulder 4 to connect with the anti-seepage test piece. The chassis 7 on the osmometer 6 is bolted so that it is fixed in the test position on the top of the chassis 7 .

There are 6 test positions evenly distributed on the chassis 7 , and the 6 test positions are arranged in 2 rows and 3 columns along the length direction of the chassis 6 . The water pressure in the test can be read on the digital display water pressure gauge 8 on the casing surface of the anti-seepage meter 6 .

The method of adopting the above-mentioned anti-permeability detection device, the specific steps are as follows:

Step 1: Make the core sample without obvious defects into a cylinder with a diameter of 150mm and a height of 150mm as the impermeability test piece 2, and it is advisable to make six impermeability test pieces 2 for each group.

Step 2: Clean the surface of the anti-seepage test piece 2, and pre-wet the side of the anti-seepage test piece 2 with clean water to keep the side wet, but without clear water.

Step 3: Configure the micro-expansion sealing layer 3 according to the designed ratio, mix thoroughly until it is a paste without precipitation, leave it for five minutes, and then stir it for the second time for later use.

Step 4: Use a brush to evenly apply the paste, that is, the micro-expansion sealing layer 3, on the side of the anti-seepage test piece 2, and apply it three times. After brushing once, wait for preliminary drying (interval time 2-4 hours) and then paint again, and the thickness of the micro-expansion sealing layer 3 that brushes three times is about 1.5-2mm.

Step 5: When the anti-seepage test piece 2 is painted for the third time, the mold cavity of the anti-seepage test piece set 1 should be painted at the same time, that is, the hollow inner wall of the cylinder should be painted.

Step 6: Press the anti-seepage test piece 2 into the anti-seepage test piece set 1 with a pressurizing device, and perform the anti-seepage test after standing for 48 hours.

Step 7: Install the anti-seepage test piece set 1 with the anti-seepage test piece 2 on the test position on the chassis 7, pass through the bolt holes 5 on the ring shoulder 4, and connect the test position bolts with nuts.

Step 8: Turn on the anti-seepage instrument 6 to carry out the anti-seepage test.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be interpreted as a limitation on the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A concrete anti-seepage test piece cover, characterized in that, the concrete anti-seepage test piece cover is a hollow structure, and a micro-expansion sealing layer is provided between the hollow inner wall of the hollow structure and the anti-seepage test piece. 2. The concrete anti-seepage test set according to claim 1, characterized in that, the concrete anti-seepage test set is a hollow cylinder structure. 3. The concrete anti-seepage test piece cover according to claim 2, wherein one end of the concrete anti-seepage test piece cover is provided with a ring shoulder, and the ring shoulder is arranged along the circumferential direction. Evenly spaced bolt holes. 4. The concrete impermeability test piece set according to claim 3, characterized in that, the cylindrical structure is integrally formed with the ring shoulder. 5. The concrete anti-seepage test piece set according to claim 4, characterized in that, the size of the concrete anti-seepage test piece set matches the size of the concrete anti-seepage test piece. 6 . The concrete impermeability test piece set according to claim 1 , wherein the micro-expansion sealing layer is a osmotic crystalline waterproof structure formed by interpenetrating polymer film layers and hardened cement. 7. The concrete anti-seepage test piece cover according to claim 1, characterized in that, the penetration depth of the micro-expansion sealing layer is within the depth range of 2 mm on the surface of the anti-seepage test piece. 8. adopt the impermeability detection device of the concrete anti-seepage test piece cover as described in any one of claim 1-7, it is characterized in that, comprise: anti-seepage meter, chassis and described concrete impermeability test piece cover, so The chassis is set on the top of the anti-seepage instrument, and the concrete anti-seepage test piece set is fastened to the upper part of the chassis by bolts. 9. The impermeability testing device according to claim 8, characterized in that there are 6 testing positions evenly distributed on the chassis. 10 . The impermeability testing device according to claim 9 , wherein the six test positions are arranged in two rows and three columns along the length direction of the chassis. 11 .