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A kind of preparation method of self-healing cement-based material

A cement-based material and self-healing technology, applied in the field of building materials, can solve the problems of limited self-healing ability and slow self-healing speed of self-healing concrete, shorten the self-healing time, promote self-polymerization, increase the The effect of bond strength

Active Publication Date: 2021-02-02
辽宁恒智科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention: In view of the limited self-healing ability and slow self-healing speed of the current self-healing concrete, the present invention provides a preparation method of self-healing cement-based materials

Method used

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  • A kind of preparation method of self-healing cement-based material

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preparation example Construction

[0021] A preparation method of a self-healing cement-based material, the preparation method comprising the steps of:

[0022] (1) Grind calcium silicate and aluminum powder at 500r / min for 70 minutes according to the mass ratio of 1:3~5, use nitrogen for protection during the grinding process, collect the ground material, and mix the ground material and the mixture Put it into an ultrasonic vibrator at a mass ratio of 1:4 for 20 minutes of ultrasonic vibration, collect the vibrator, and set aside;

[0023] (2) Put the clay, surfactant and ethanol solution into the ball mill at a mass ratio of 4 to 6:1:3 to 5, then add steel balls with a diameter of 60mm that are 5 to 6 times the mass of clay, and run at 600r / min Ball milling for 1 hour, during the ball milling process, the temperature inside the ball mill is not higher than 40°C, collect the ball milled material, filter, and collect the filter residue;

[0024] (3) In parts by weight, take 80-90 parts of 1.2mol / L ethanol solu...

Embodiment 1

[0028] The mixture is prepared by heating ethanol and pine resin at a mass ratio of 1:2 at 50°C for 40 minutes to obtain the mixture.

[0029] The surfactant of choice is polyoxyethylene alkanolamide.

[0030] The choice of additive is furfural.

[0031] A preparation method of a self-healing cement-based material, the preparation method comprising the steps of:

[0032] (1) According to the mass ratio of 1:3, grind calcium silicate and aluminum powder at 500r / min for 70min, use nitrogen for protection during the grinding process, collect the ground material, and mix the ground material and the mixture by mass Ratio 1:4, put it into an ultrasonic vibrator for 20 minutes of ultrasonic vibration, collect the vibrator, and set aside;

[0033] (2) Put the clay, surfactant and ethanol solution into the ball mill according to the mass ratio of 4:1:3, then add steel balls with a diameter of 60mm that are 5 times the mass of clay, and perform ball milling at 600r / min for 1h. The te...

Embodiment 2

[0038] The mixture is prepared by heating ethanol and pine resin at a mass ratio of 1:2 at 55°C for 40 minutes to obtain the mixture.

[0039] The choice of surfactant is sodium dodecylbenzenesulfonate.

[0040] The choice of additive is furfural.

[0041] A preparation method of a self-healing cement-based material, the preparation method comprising the steps of:

[0042] (1) According to the mass ratio of 1:5, grind calcium silicate and aluminum powder at 500r / min for 70min, use nitrogen for protection during the grinding process, collect the ground material, and mix the ground material and the mixed solution by mass Ratio 1:4, put it into an ultrasonic vibrator for 20 minutes of ultrasonic vibration, collect the vibrator, and set aside;

[0043] (2) Put the clay, surfactant and ethanol solution into the ball mill at a mass ratio of 6:1:5, then add steel balls with a diameter of 60 mm that are 6 times the mass of clay, and perform ball milling at 600 r / min for 1 hour. The...

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Abstract

The invention discloses a preparation method of a self-healing cement-based material, which belongs to the field of building materials. The present invention grinds calcium silicate and aluminum powder, uses nitrogen to protect during the grinding process, collects the ground material, puts the ground material and the mixed solution into an ultrasonic oscillator for ultrasonic vibration, and collects the oscillating material; Put the clay, surfactant and ethanol solution into the ball mill, add steel balls for ball milling, collect the ball mill, filter, and collect the filter residue; stir and mix the ethanol solution and filter residue to obtain a stirred mixture; mix the stirred mixture, water, fly ash and Put the polyvinyl alcohol into a container to heat, cool to room temperature, add additives, mix, freeze-dry, collect the freeze-dried product, pulverize, sieve, and collect the sieved particles; put the sieved particles and cement into a mixer for stirring, The mix was collected, ie from the cured cementitious material.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of a self-healing cement-based material. Background technique [0002] Cement-based composite materials are typical brittle materials, which are prone to cracks during use. If the cracks are controlled or repaired at an early stage, crack propagation can be avoided and the safety and durability of the building can be guaranteed. For the control of cracks, the common method now is to add fiber materials or other additives to improve the overall toughness of cement-based composites. In terms of repair, technical means such as microbial methods, repair adhesives, and active self-repair systems can be used to repair cracks. [0003] Concrete has its own defects such as high brittleness and low tensile strength that are difficult to overcome, and it is easy to produce cracks under the influence of the use process and the surrounding environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/18
CPCC04B28/188C04B2111/343C04B22/04C04B24/026C04B24/2623C04B24/008C04B14/10C04B24/16C04B24/2652
Inventor 董发勇施衍刘红妹
Owner 辽宁恒智科技发展有限公司
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