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Reinforced waterproof self-repairing concrete sound barrier and preparation method thereof

A sound barrier and concrete technology, which is applied in construction, noise absorption devices, etc., can solve the problems of concrete sound barrier cracks that cannot be completely solved, loss of waterproof ability, temporary cure, etc., to eliminate shrinkage, improve compactness, and improve waterproofing performance effect

Inactive Publication Date: 2019-04-05
JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing concrete sound barrier waterproofing technology mainly uses ordinary cement-based waterproof coating, which belongs to the surface sealing waterproof material. The waterproof effect mainly acts on the surface. Once the waterproof layer is damaged or peeled off, the waterproof ability will be lost.
At the same time, the existing concrete sound barrier crack treatment method uses repair materials to repair macroscopic cracks, but due to the limitation of repair materials, these cracks can only be completely repaired after a long period of maintenance after repair, otherwise cracks will still appear. The method treats the symptoms but not the root cause, and the cracks in the concrete sound barrier cannot be completely solved

Method used

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  • Reinforced waterproof self-repairing concrete sound barrier and preparation method thereof

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Effect test

Embodiment 1

[0032] A reinforced waterproof self-repairing concrete sound barrier, including a face plate and a back plate, and sound-absorbing material rock wool is arranged between the face plate and the back plate; the raw materials of the face plate and the back plate are: PO 42.5 grade Portland cement 320 parts; I grade F 50 parts of similar fly ash, the loss on ignition of fly ash is ≤8%; 680 parts of fine aggregate; 700 parts of coarse aggregate; 150 parts of water; 40 parts of early strength high-performance water reducing agent; ; 2 parts of methyl cellulose ether; 5 parts of self-healing agent sodium silicate; 2 parts of glass fiber cloth; 35 parts of steel mesh; 10 parts of sound-absorbing cotton;

[0033] The fine aggregate is continuously graded medium sand, the coarse aggregate is continuously graded gravel of 5-10mm; the glass fiber cloth has a bulk density of 130g / m 3 , the width is 420mm, the length is 1890mm; the steel mesh is The steel bar has a width of 420 mm and a l...

Embodiment 2

[0043] An enhanced waterproof self-repairing concrete sound barrier, including a face plate and a back plate, and sound-absorbing material glass wool is arranged between the face plate and the back plate; the raw materials of the face plate and the back plate are: PO 42.5 grade cement Portland cement 350 parts; I grade 70 parts of class F fly ash, loss on ignition ≤ 8%; 750 parts of fine aggregate; 800 parts of coarse aggregate; 180 parts of water; 50 parts of early strength high-performance water reducer; 30 parts of catalyst calcium formate; 5 parts of plain ether; 15 parts of self-healing agent sodium silicate; 10 parts of glass fiber cloth; 60 parts of steel mesh; 30 parts of sound-absorbing cotton;

[0044] The fine aggregate is continuously graded medium sand, and the coarse aggregate is continuously graded crushed stone of 5-10mm. The bulk density of glass fiber cloth is 130g / m 3 , a width of 500mm and a length of 3890mm. The steel mesh is The steel bar has a width ...

Embodiment 3

[0054] A reinforced waterproof self-repairing concrete sound barrier, including a panel and a back panel, and a sound-absorbing material polyamide foam is arranged between the panel and the back panel; the raw materials of the panel and the back panel are: raw material PO 42.5 grade Portland cement 330 parts ; 60 parts of fly ash, Class I F, loss on ignition ≤ 8%; 700 parts of fine aggregate; 730 parts of coarse aggregate; 160 parts of water; 43 parts of early-strength high-performance water reducer; catalyst calcium formate 23 parts; 3 parts of methyl cellulose ether; 8 parts of self-healing agent sodium silicate; 5 parts of glass fiber cloth; 40 parts of steel mesh and 15 parts of sound-absorbing cotton;

[0055] The fine aggregate is continuously graded medium sand, and the coarse aggregate is continuously graded crushed stone of 5-10mm. Fiberglass cloth has a bulk density of 130g / m 3 , width 450mm, length 2000mm. The steel mesh is The steel bar has a width of 4500mm an...

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Abstract

The invention discloses a reinforced waterproof self-repairing concrete sound barrier and a preparation method thereof, which belongs to the technical field of concrete sound barriers. The sound barrier is prepared from the following raw materials: silicate cement, coal ash, fine aggregates, coarse aggregates, water, water reducing agent, catalyst, cellulose ether, self-repairing agent, glass fiber cloth, reinforcement mesh sheets and sound absorption cotton. By adopting the reinforced waterproof self-repairing concrete sound barrier of the invention, the surface of internal siliceous raw materials can be cross-linked with hydroxyl group in a hydration manner, a hydrophobic layer is formed in a manner that a Si-O-Si group faces the siliceous raw material and a methyl group facing outside,so that the surface waterproof performance of the concrete sound barrier can be improved. The concrete sound barrier of the invention is good in surface flexural strength, surface compressive strength, wind pressure resistance, bending fracture load resistance, freeze-thaw resistance and the like and longer in the service life.

Description

technical field [0001] The invention belongs to the technical field of concrete sound barriers, in particular to a reinforced waterproof self-repairing concrete sound barrier and a preparation method thereof. Background technique [0002] At present, most railway non-metallic sound barrier products are concrete sound barriers, and they are installed outdoors. They have long been affected by external wind, rain, temperature, vibration and the defects of concrete materials, resulting in poor waterproof performance of concrete sound barriers during use. It is easy to produce micro-cracks, so that harmful ions enter the interior of the concrete sound barrier, erode the concrete and internal steel bars, and reduce the surface flexural strength, surface compressive strength, wind pressure resistance, bending fracture load resistance, and freeze-thaw resistance of the concrete sound barrier Performance, etc., shorten the service life of concrete noise barriers, especially affecting...

Claims

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Application Information

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IPC IPC(8): C04B28/04E01F8/00C04B111/27C04B111/52C04B111/76
CPCC04B28/04C04B2111/27C04B2111/52C04B2111/76C04B2201/50E01F8/00C04B18/08C04B14/06C04B14/02C04B2103/302C04B24/383C04B24/04C04B12/04C04B14/42C04B14/48C04B20/0048
Inventor 洪少华张玉岁王卫东宣君许晶晶姜建华孙斌李娟
Owner JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENG