阅读说明：本技术 一种水泥基材料自修复微胶囊的超声触发的辅助装置及方法 (Auxiliary device and method for ultrasonic triggering of cement-based material self-repairing microcapsule ) 是由 宋子健 余培培 李子铭 许婉 张英杰 徐娜 刘永琦 蔡焕春 于 2019-10-15 设计创作，主要内容包括：本发明公开了一种水泥基材料自修复微胶囊的超声触发的辅助装置及方法。所述装置包括容器、附着于容器外壁上的超声振子、容器内的试件固定装置及循环水装置。试件固定装置与容器内壁底部相连,用来放置微胶囊水泥基试件。连接循环水装置控制容器内温度,使试块处于恒温水浴状态下。容器外壁的超声振子与超声发生器相连,并由发生器控制超声的频率、功率、占空比和时间。本发明的辅助装置可调节性好,可以改变超声各项参数,进而探究超声各项参数对水泥基试件中微胶囊的触发效果及规律,体积小巧,操作方便,可重复使用,易于推广,应用前景广阔。(The invention discloses an auxiliary device and method for ultrasonic triggering of a cement-based material self-repairing microcapsule. The device comprises a container, an ultrasonic vibrator attached to the outer wall of the container, a test piece fixing device in the container and a circulating water device. The test piece fixing device is connected with the bottom of the inner wall of the container and used for placing the microcapsule cement-based test piece. The circulating water device is connected to control the temperature in the container, so that the test block is in a constant temperature water bath state. The ultrasonic vibrator on the outer wall of the container is connected with an ultrasonic generator, and the frequency, power, duty ratio and time of the ultrasonic are controlled by the generator. The auxiliary device has good adjustability, can change various ultrasonic parameters so as to explore the triggering effect and rule of the various ultrasonic parameters on the microcapsules in the cement-based test piece, and has the advantages of small volume, convenient operation, repeated use, easy popularization and wide application prospect.)

1. An ultrasonic triggering auxiliary device of a cement-based material self-repairing microcapsule is characterized by comprising a container, an ultrasonic device, a test piece fixing device and a circulating water device;

the container is of a hollow cubic structure, the top of the container is provided with a container cover, the bottom of the container is provided with a container support as a supporting base, and the lower part and the higher part of two opposite side surfaces of the container are respectively provided with a water inlet and a water outlet;

the ultrasonic devices are 6 ultrasonic vibrators and are respectively fixed on 4 side surfaces and the bottom surface of the outer wall of the container and the midpoint of the container cover;

the test piece fixing device comprises a grid box, a grid support column and a grid rotating shaft, wherein the grid box is a cube with 6 surfaces all being grids, the grid box is fixed at the middle point of the bottom of the inner wall of the container through the grid support column, and the grid rotating shaft is arranged at the junction of two side surfaces of the grid box, so that one side surface of the grid box can freely rotate around a shaft;

the circulating water device is respectively connected with the water inlet and the water outlet through pipelines.

2. The ultrasonic-triggered auxiliary device for the cement-based material self-repairing microcapsules of claim 1, wherein the container is made of engineering plastic, organic glass or nylon.

3. The ultrasonic-triggered auxiliary device for the self-repairing microcapsules of cement-based materials of claim 1, wherein a rubber ring is further installed in the container cover.

4. The ultrasonic-triggered auxiliary device for the cement-based material self-repairing microcapsules of claim 1, wherein the ultrasonic vibrator is fixed on the container through a KD-504A high-grade universal adhesive.

5. The ultrasonic-triggered auxiliary device for the self-repairing microcapsules of cement-based materials as claimed in claim 1, wherein the container support is of a chamfered structure.

6. The ultrasonic triggering method of the cement-based material self-repairing microcapsules based on the ultrasonic triggering auxiliary device of the cement-based material self-repairing microcapsules of claim 1 is characterized in that a circulating water device is started, water enters from a low position, water exits from a high position, a container is filled with water, a cement-based test piece is placed in a test piece fixing device, and the cement-based test piece is completely soaked in the water; connecting an ultrasonic vibrator with an ultrasonic generator, setting the ultrasonic frequency to be 20-40 KHZ, the power to be 100-300W and the ultrasonic time to be 10-15 min; and the circulating water is used for taking away the redundant heat generated by the ultrasonic waves, the temperature in the container is controlled, and the constant-temperature water bath of the test block is realized.

Technical Field

The invention belongs to the technical field of material performance test and inspection, and particularly relates to an ultrasonic triggering auxiliary device and method for a cement-based material self-repairing microcapsule.

Background

The trigger type microcapsule is one of leading-edge technologies of concrete crack self-repair, but the existing microcapsule trigger mode has the defects of uncontrollable trigger time, low release efficiency and the like. Therefore, the efficient and stable triggering method is found, and the method has a good application prospect.

The ultrasonic wave has the advantages of good directivity, strong penetrating power, concentrated energy, improved reaction conditions, accelerated reaction speed, improved reaction yield and the like, is widely applied and researched in the aspects of degradation and polymerization of macromolecules, organic synthesis, separation and the like, and is also widely applied to gap detection and segregation detection of concrete.

The ultrasonic technology is utilized to trigger the microcapsules in the cement-based material, so that the release rate of the microcapsules can be improved, the efficient controllable release of the microcapsules can be realized, the reliability of the microcapsule repairing technology can be improved, the quality and the safety of a concrete structure can be improved, and considerable benefits can be brought. However, at present, the application of ultrasonic waves in triggering microcapsules in cement-based materials has not been reported.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the ultrasonic triggering auxiliary device and method for the cement-based material self-repairing microcapsules, which have good adjustability, small volume, convenient operation, repeated use, easy popularization and wide application prospect, and can change various ultrasonic parameters so as to further explore the triggering effect and rule of the various ultrasonic parameters on the microcapsules in the cement-based test piece.

The invention is realized by the following technical scheme:

an ultrasonic triggering auxiliary device of a cement-based material self-repairing microcapsule comprises a container, an ultrasonic device, a test piece fixing device and a circulating water device;

the container is of a hollow cubic structure, the top of the container is provided with a container cover, the bottom of the container is provided with a container support as a supporting base, and the lower part and the higher part of two opposite side surfaces of the container are respectively provided with a water inlet and a water outlet;

the ultrasonic devices are 6 ultrasonic vibrators and are respectively fixed on 4 side surfaces and the bottom surface of the outer wall of the container and the midpoint of the container cover;

the test piece fixing device comprises a grid box, a grid support column and a grid rotating shaft, wherein the grid box is a cube with 6 surfaces all being grids, the grid box is fixed at the middle point of the bottom of the inner wall of the container through the grid support column, and the grid rotating shaft is arranged at the junction of two side surfaces of the grid box, so that one side surface of the grid box can freely rotate around a shaft;

the circulating water device is respectively connected with the water inlet and the water outlet through pipelines.

Preferably, the material of the container is engineering plastics, organic glass or nylon.

Preferably, a rubber ring is further installed in the container cover.

Preferably, the ultrasonic vibrator is fixed on the container through KD-504A high-grade universal adhesive.

Preferably, the container support is of a chamfered structure.

An ultrasonic triggering method of a cement-based material self-repairing microcapsule comprises the following steps: starting a circulating water device, feeding water at a low position, discharging water at a high position to enable the container to be filled with water, and placing the cement-based test piece in the test piece fixing device to enable the cement-based test piece to be completely soaked in the water; connecting an ultrasonic vibrator with an ultrasonic generator, setting the ultrasonic frequency to be 20-40 KHZ, the power to be 100-300W and the ultrasonic time to be 10-15 min; and the circulating water is used for taking away the redundant heat generated by the ultrasonic waves, the temperature in the container is controlled, and the constant-temperature water bath of the test block is realized.

The invention has the following beneficial effects:

the auxiliary device for ultrasonic triggering of the cement-based material self-repairing microcapsules fills the blank in the field of ultrasonic triggering of the cement-based material self-repairing microcapsules in the prior art, can be matched with a laboratory to perform an ultrasonic triggering cement-based self-repairing microcapsule experiment, performs the triggering experiment on the cement-based self-repairing microcapsules by changing various parameters such as frequency, power and the like of ultrasonic, researches the triggering effect of the triggering experiment, and finally forms a mature ultrasonic triggering mechanism. The auxiliary device has good adjustability, can change various ultrasonic parameters, further explores the triggering effect and rule of the various ultrasonic parameters on the microcapsules in the cement-based test piece, and has the advantages of small size, convenience in operation, reusability, easiness in popularization and wide application prospect.

Drawings

FIG. 1 is a schematic view of the overall structure of the auxiliary device of the present invention;

FIG. 2 is a top view of the overall structure of the auxiliary device of the present invention;

in fig. 3: FIG. 3-a is a schematic view of a structure of a mesh grid safety catch hole; FIG. 3-b is a top view of a grid security bolt fastening hole structure; FIG. 3-c is a schematic view of a structure of a grid security door latch; fig. 3-d is a top view of a grid security door structure.

In the figure: 1. a rubber ring; 2. a water outlet; 3. a water inlet; 4. a mesh box; 5. a container cover; 6. a grid strut; 7. an ultrasonic vibrator; 8. a container sidewall; 9. a container support; 10. a mesh grid rotating shaft; 11. a grid safety plug; 12. leading out the positive electrode; 13. and (5) leading out the negative electrode.

Detailed Description

The invention is described in further detail below with reference to specific embodiments and with reference to the following drawings.