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A kind of lightweight polymer cement mortar with waterproof and anticorrosion function

A cement mortar and polymer technology, which is applied in the field of polymer cement mortar materials, can solve the problems of corrosion damage of light boards, damage of light boards, high water absorption, etc.

Active Publication Date: 2021-07-20
北京固瑞恩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual use process, many coal transport trestles have the problem of leakage caused by the damage of the waterproof layer. The water for washing the coal powder seeps into the light board on the inner ground of the trestle, which in turn causes the damage of the light board. In some coal mines, There is even a problem that the light board is damaged and the large pieces fall
There are two main reasons for the damage of the light board. One is that the water used to wash the coal powder is corrosive to a certain extent (the coal powder contains sulfur and other corrosive impurities), which causes corrosion damage to the light board; the other reason is that the light The board has low strength and high water absorption rate. After absorbing water, it is easy to cause freeze-thaw damage when the temperature is lower than 0°C
In order to repair the damaged lightweight board, it is also necessary to use lightweight cement mortar materials, and the current common lightweight cement mortar has a high water absorption rate and does not have anti-corrosion functions. After repairing with these materials, it is easy to reappear damage The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Component A: 100 parts of ordinary silicon 42.5 grade cement, 0.3 parts of 9mm long polypropylene fiber, 0.3 parts of powder polycarboxylate superplasticizer, 0.1 part of powder defoamer, 3 parts of thixotropic agent. The above-mentioned various raw materials are mixed evenly with a mortar mixer and then packed into bags.

[0016] Component B: Surface-treated vitrified microbeads;

[0017] The surface treatment method is as follows: use a forced mixer with low speed and heating and heat preservation function, and the speed of the stirring blade should not exceed 100 rpm. Put 100kg of vitrified microspheres with a diameter of 1-2mm into the mixer and start stirring, and at the same time start the heating function of the mixer. Heat and melt the paraffin, and use a high-pressure airless sprayer to atomize the melted paraffin and spray it into the mixer, and spray it while stirring, so that the atomized paraffin particles are attached to the surface of the glass beads. A...

Embodiment 2

[0021] Component A: 100 parts of ordinary silicon 42.5 grade cement, 0.3 parts of 9mm long polypropylene fiber, 0.3 parts of powder polycarboxylate superplasticizer, 0.1 part of powder defoamer, 3 parts of thixotropic agent. The above-mentioned various raw materials are mixed evenly with a mortar mixer and then packed into bags.

[0022] Component B: Surface-treated vitrified microbeads;

[0023] The surface treatment method is as follows: use a forced mixer with low speed and heating and heat preservation function, and the speed of the stirring blade should not exceed 100 rpm. Put 100kg of vitrified microspheres with a diameter of 1-2mm into the mixer and start stirring, and at the same time start the heating function of the mixer, and control the temperature inside the mixer at 65-70°C. Heat and melt 25kg of paraffin (60#), and use a high-pressure airless sprayer to atomize the melted paraffin and spray it into the mixer, spray it while stirring, and control the spraying sp...

Embodiment 3

[0028] Component A: 100 parts of ordinary silicon 52.5 grade cement, 0.3 part of 9mm long polypropylene fiber, 0.4 part of powder polycarboxylate superplasticizer, 0.2 part of powder defoamer, 2 parts of thixotropic agent. The above-mentioned various raw materials are mixed evenly with a mortar mixer and then packed into bags.

[0029] Component B: surface-treated ceramsite;

[0030] The surface treatment method is as follows: use a forced mixer with low speed and heating and heat preservation function, and the speed of the stirring blade should not exceed 100 rpm. Put 100kg of ceramsite with a diameter of 3-5mm into the blender and start stirring. At the same time, start the heating function of the blender to control the temperature inside the blender at 60-65°C. Heat and melt 20kg of paraffin (58#), and use a high-pressure airless sprayer to atomize the melted paraffin and spray it into the mixer. The injection speed of the paraffin is controlled at 1kg / min. The paraffin p...

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Abstract

The invention provides a light-weight polymer cement mortar with waterproof and anti-corrosion function, which can be used for repairing light boards of coal transport trestles. The lightweight polymer cement mortar consists of three components: A, B, and C. Component A: 100 parts of cement, 0-5 parts of fiber, and 0.1-5 parts of additives; Component B: surface-treated vitrified microspheres , expanded perlite, ceramsite, polystyrene particles, floating beads and other lightweight aggregates; component C: one or more of polyacrylate emulsion, neoprene emulsion, epoxy emulsion mixed in proportion. During construction, first mix components A and C into a uniform cement paste, then add component B and continue stirring evenly to obtain a lightweight polymer cement mortar with waterproof and anti-corrosion functions.

Description

technical field [0001] The invention relates to a polymer cement mortar material, and more particularly relates to a lightweight polymer cement mortar with waterproof and anticorrosion functions. Background technique [0002] In the coal industry, in order to avoid problems such as dust and rain, after coal is dug out of the mine, it is rarely stacked in the open air. It is usually transported into special silos for storage through coal transport trestles. Most of the coal transportation trestles are of the steel structure type, and the conveyor belt is erected on it. At the same time, in order to avoid coal scattering and dust during the transportation process, the trestle bridges are generally of a fully enclosed type, and the sides and tops are generally closed with color steel plates. In order to facilitate the actions of maintenance and maintenance personnel, the interior floor of the trestle bridge is generally laid with a lightweight cement-based slab with steel mesh,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/06C04B111/20C04B111/27
CPCC04B20/12C04B28/04C04B28/06C04B2111/20C04B2111/27C04B2201/20C04B2201/50C04B16/0633C04B2103/302C04B2103/50C04B2103/0085C04B14/24C04B24/26C04B20/1018C04B20/1077C04B18/027C04B24/281C04B24/06C04B14/185C04B24/2682
Inventor 仲朝明陈田万宇宋振业汤青青
Owner 北京固瑞恩科技有限公司