Thick-painted cement-based waterproof coating

A waterproof coating, cement-based technology, applied in the field of cement-based waterproof coatings, can solve problems such as easy cracking, increase construction costs, time-consuming and labor-intensive, etc., and achieve the effect of large contact area, cost saving, and good elongation at break

Active Publication Date: 2015-08-26
HUIZHOU ORIENTAL YUHONG BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the polymer cement waterproof coating powder is mainly composed of cement and other powder raw materials. It is easy to crack after being mixed with liquid materials. It cannot be applied thickly at one time. Both require thin coating and multiple brushes. To reach a certain thickness, it takes many Repeated construction, time-consuming and labor-intensive, greatly increasing the construction cost

Method used

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  • Thick-painted cement-based waterproof coating
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  • Thick-painted cement-based waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Proportion the various raw materials according to Table 1 (weight ratio, the same below):

[0026]

[0027] 2. The preparation process is as follows:

[0028] Acrylic cationic high polymer emulsion, water, additives (defoamer, bactericide, plasticizer, propylene glycol, etc.) are weighed and added to the stirring tank, and the stirring tank is turned on for 15 minutes to disperse evenly to obtain the liquid material. Filling and packaging for use;

[0029] 32.5 white cement, river sand within the range of 40 mesh to 80 mesh + mountain sand within the range of 80 mesh to 120 mesh, glass beads with a particle size of 10 micron to 250 micron, and precipitated barium sulfate particles within the range of 200 mesh to 1250 mesh , naphthalene-based water reducer, etc., weighed and added to the mortar mixer, with a stirring speed of 300 rpm, started mixing and stirring for 5 minutes to disperse evenly, and then the powder was obtained, which was packaged for use.

[003...

Embodiment 2

[0034] 1. Proportion the various raw materials according to Table 2 (weight ratio, the same below):

[0035]

[0036] 2. The difference between the preparation process and Example 1 is that the raw material composition ratio is in accordance with Table 2, and the others are the same as in Example 1.

[0037] 3. The method of using the thick-coated cement-based waterproof coating is as follows:

[0038] Put the liquid material into the bucket, turn on the electric mixer, stir the liquid material, add the powder material into the bucket, wherein the mass ratio of the liquid material to the powder material is 1:2, and mix and stir at a speed of 500 rpm for 3 minute. Roller coating plane and facade construction, the thickness of one construction can reach 1.5mm ~ 2.0mm, no cracking, no sagging, no slippage and other adverse phenomena.

[0039] The measured bonding strength is ≥2.8MPa; the elongation at break is ≥80%.

Embodiment 3

[0041] 1. Proportion the various raw materials according to Table 3 (weight ratio, the same below):

[0042]

[0043] 2. The difference between the preparation process and Example 1 is that the composition ratio of the raw materials is in accordance with Table 3, and the others are the same as in Example 1.

[0044] 3. The method of using the thick-coated cement-based waterproof coating is as follows:

[0045] Add the liquid material into the bucket, turn on the electric mixer, stir the liquid material, add the powder material into the bucket, wherein the mass ratio of the liquid material to the powder material is 1:2.5, and mix and stir at a speed of 500 rpm for 3 minute. Roller coating plane and facade construction, the thickness of one construction can reach 1.5mm ~ 2.0mm, no cracking, no sagging, no slippage and other adverse phenomena.

[0046] The measured bonding strength is ≥3.0MPa; the elongation at break is ≥50%.

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Abstract

The invention discloses a thick-painted cement-based waterproof coating, which consists of liquid materials and powder materials, wherein the liquid materials and the powder materials are made from raw materials with parts by weight: the liquid materials comprise high polymer emulsion 80%-90%, water 10%-20% and auxiliaries 3%-10%, the powder materials comprise cement 30%-50%, graded sands 20%-40%, glass beads 10%-30%, precipitated barium sulphate 10%-30% and auxiliaries 3%-10%. The thick-painted cement-based waterproof coating can achieve a thickness which is required by standard construction through once thick-painted construction in the non-cracking condition, saves time and labor, and greatly saves cost for building construction. Experimental results show, the thick-painted cement-based waterproof coating uses roll coating, brush coating and roll coating modes to construct, can achieve 1.5mm-2.0mm construction thickness, can achieve above 3.5MPa bonding strength, can achieve above 250% elongation at break, and does not have unhealthy phenomena of cracking, sagging and slipping and the like.

Description

technical field [0001] The invention relates to a cement-based waterproof coating, in particular to a thick-coated cement-based waterproof coating. Background technique [0002] At present, the polymer cement waterproof coating powder is mainly composed of cement and other powder raw materials. It is easy to crack after being mixed with liquid materials. It cannot be applied thickly at one time. Both require thin coating and multiple brushes. To reach a certain thickness, it takes many Repeated construction is time-consuming and labor-intensive, which greatly increases the construction cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a thick-coated cement-based waterproof coating that can be applied in one pass to reach the thickness required by the standard, which greatly saves labor costs. [0004] The technical solution adopted by the present invention to solve the technical problem is: a kind of thick-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 王好望
Owner HUIZHOU ORIENTAL YUHONG BUILDING MATERIALS
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