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A kind of preparation technology of self-caulking anti-seepage curtain type concrete precast pile

A technology of prefabricated concrete piles and preparation process, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of reduced concrete strength, decreased impermeability, unsatisfactory effect, etc. Effect

Active Publication Date: 2022-07-12
浙江宗盛建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the method of preparing expansive concrete is often used to improve the raw materials, which can compensate the shrinkage of the concrete poured in the cavity of the pipe pile, can play the role of crack resistance and waterproof, and improve the pore structure and pore gradation of the concrete. , to improve the impermeability of concrete, but only relying on the impermeability of precast concrete piles, the effect is generally unsatisfactory, and the quality of expansive concrete is difficult to control, and expansion cracking is prone to occur, which will instead lead to a decrease in concrete strength and impermeability. will also decrease

Method used

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  • A kind of preparation technology of self-caulking anti-seepage curtain type concrete precast pile
  • A kind of preparation technology of self-caulking anti-seepage curtain type concrete precast pile
  • A kind of preparation technology of self-caulking anti-seepage curtain type concrete precast pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 , a preparation process of self-caulking anti-seepage curtain-type precast concrete pile, comprising the following steps:

[0046] S1. Prepare concrete raw materials and mix them; standby;

[0047] S2. After binding the curtain-type steel cage, put it into the pipe pile mold, and apply a layer of demoulding oil with a thickness of 0.3-0.5mm on the inner wall of the mold;

[0048] S3, pouring the mixed concrete into the pipe pile mold, and centrifugally molding to obtain the prefabricated pile body 1;

[0049] S4. The prefabricated pile body 1 is statically stopped for 2-2.5 hours, and then steamed at atmospheric pressure. The temperature is raised to 75-80°C at 25°C / h, and the constant temperature is 6-8 hours. Patching procedure;

[0050] S5, remove the template and take out the prefabricated pile body 1, carry out natural maintenance, and hoist it to the outer yard.

[0051] The concrete raw material includes the following components in parts by weigh...

Embodiment 2

[0062] see figure 1 , a preparation process of self-caulking anti-seepage curtain-type precast concrete pile, comprising the following steps:

[0063] S1. Prepare concrete raw materials and mix them; standby;

[0064] S2. After binding the curtain-type steel cage, put it into the pipe pile mold, and apply a layer of demoulding oil with a thickness of 0.4mm on the inner wall of the mold;

[0065] S3, pouring the mixed concrete into the pipe pile mold, and centrifugally molding to obtain the prefabricated pile body 1;

[0066] S4. The prefabricated pile body 1 is statically stopped for 2.2 hours, and then steamed at atmospheric pressure, heated to 78°C at 25°C / h, kept at a constant temperature for 7 hours, and then cooled to room temperature within 1 hour, triggering the process of the curtain-type reinforcement cage to be repaired;

[0067] S5, remove the template and take out the prefabricated pile body 1, carry out natural maintenance, and hoist it to the outer yard.

[00...

Embodiment 3

[0071] seefigure 1 , a preparation process of self-caulking anti-seepage curtain-type precast concrete pile, comprising the following steps:

[0072] S1. Prepare concrete raw materials and mix them; standby;

[0073] S2. After binding the curtain-type steel cage, put it into the pipe pile mold, and apply a layer of 0.5mm thick demoulding oil on the inner wall of the mold;

[0074] S3, pouring the mixed concrete into the pipe pile mould, centrifugal forming, to obtain the prefabricated pile body 1;

[0075] S4. The prefabricated pile body 1 is statically stopped for 2.5 hours and then steamed at atmospheric pressure, heated to 80°C at 25°C / h, kept at a constant temperature for 8h, and then cooled to room temperature within 1h, triggering the process of the curtain-type reinforcement cage to be repaired;

[0076] S5. Remove the formwork, take out the prefabricated pile body 1, carry out natural maintenance, and hoist it to the outer yard.

[0077] The concrete raw material inc...

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Abstract

The invention discloses a preparation process of a self-caulking anti-seepage curtain-type prefabricated concrete pile, belonging to the technical field of concrete prefabricated piles. The invention can realize the method of pre-embedding a curtain-type steel cage, which not only improves the strength of the prefabricated pile body, but also improves the strength of the prefabricated pile body. The specially set water diversion and caulking rods are used to form a tight mesh structure through targeted diffusion and distribution. The anti-seepage detection is carried out on the outer surface of the prefabricated pile body. When the existence of cracks and water seepage are detected, the water diversion and caulking rods will penetrate The water is brought in to trigger the caulking procedure, using the characteristics of the gas push ball to react with water to release gas, to promote it to migrate to the crack, and then use the gas to force the self-releasing plugging rod to disintegrate to release the raw material used for caulking. When it comes into contact with permeated water, it reacts with the raw material close to the precast pile body and the adhesive to seal the cracks, and the reaction releases a lot of heat, which is conducive to evaporating the permeated water in the nearby area, and significantly improves the impermeability of the concrete precast pile. .

Description

technical field [0001] The invention relates to the technical field of concrete prefabricated piles, in particular to a preparation process of a self-caulking anti-seepage curtain type concrete prefabricated pile. Background technique [0002] Concrete piles are piles made of concrete (including ordinary reinforced concrete and prestressed concrete). and other ground treatment. As the prefabricated piles to hide the foundation, prefabricated concrete piles with a side length of 150-300mm, prestressed concrete pipe piles with a diameter of 300mm, steel pipe piles with a cross-sectional size of 100-300mm, and profiled steel can be used. [0003] Concrete is a porous body with different pore sizes (10-500μm). When there is a pressure difference in the surrounding medium (or concentration difference, temperature difference, potential difference), there will be media migration that obeys fluid mechanics, that is, infiltration. The impermeability of concrete is the basic perform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/18E02D5/30
CPCE02D19/18E02D5/30
Inventor 万金山
Owner 浙江宗盛建设有限公司
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