CN104678079A - Testing method of waterproof coating - Google Patents
Testing method of waterproof coating Download PDFInfo
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- CN104678079A CN104678079A CN201310630100.8A CN201310630100A CN104678079A CN 104678079 A CN104678079 A CN 104678079A CN 201310630100 A CN201310630100 A CN 201310630100A CN 104678079 A CN104678079 A CN 104678079A
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- cement
- water
- casing
- repellent paint
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Abstract
The invention provides a testing method of a waterproof coating. The method comprises the following steps: (a) providing cement material; (b) preparing a cement box body from the cement material through a die, wherein the cement box body comprises an outer side surface, an inner side surface and a corner, thereby simulating all parts, including an upstream face, a downstream face and internal and external corners, of a construction site; (c) coating the surface of the cement box body with a waterproof coating to obtain the cement box body coated with the waterproof coating; and (d) detecting the water permeating quantity of the cement box body coated with the waterproof coating, so as to determine the construction thickness of the waterproof coating.
Description
Technical field
The present invention relates to water-repellent paint method of testing, relate to a kind of structure of cement casing more specifically, and by method that the position such as back side and upstream face harmonizing yinyang angle at its construction simulation scene is assessed polymer cement waterproof material.
Background technology
Polymer cement waterproof paint is in China's large usage quantity in recent years, be application quantity rank forefront ten one of waterproof material.Waterproof producer is assessed by the pulling strengrth of test polymer cement waterproof paint, extensibility, watertightness, coating impermeability pressure, test specimen impermeability pressure and construction feel etc. mostly;
Main brushing in the market, roller coat two kinds of modes are constructed, oil work in order to laborsaving, raise the efficiency, construct not in accordance with the description of product sometimes, viscosity is regulated at the scene by adding water, reach the efficiency of good feel and Geng Gao, thus cause coating thickness to be significantly less than the construction thickness of product requirement itself, easily cause the low inferior problem of waterproof quality.Therefore reasonable, an effective appraisal procedure seems particularly important.
In sum, this area lacks a kind of Efficient Evaluation method to water-repellent paint.
Summary of the invention
The first object of the present invention is to obtain a kind of Efficient Evaluation method to water-repellent paint.
The second object of the present invention is to provide a kind of cement casing for method of testing of the present invention.
In a first aspect of the present invention, provide a kind of method of testing of water-repellent paint, it comprises the steps:
A () provides cement material;
B () described cement material is prepared into cement casing by mould; Described cement casing comprises casing lateral surface, box inside face and casing corner, thus can each position at construction simulation scene, comprises upstream face, back side harmonizing yinyang angular position;
C () applies described water-repellent paint in described cement box surface, obtain the cement casing after applying water-repellent paint;
D () measures the water percolating capacity of the cement casing after described coating water-repellent paint, thus determine the construction thickness of water-repellent paint.
In a specific embodiment of the present invention, described water-repellent paint is polymer cement waterproof material or polymer emulsion water-repellent paint.
In a specific embodiment of the present invention, described polymer cement waterproof material comprises polymer cement waterproof paint, polymer cement waterproof slurry, Polymer cement materials or its combination.
In a specific embodiment of the present invention, described cement material is made up of silica sand, cement, water three kinds of components, and the quality proportioning of silica sand, cement, water is 3 ~ 5:1:0.5 ~ 1.0.
In a specific embodiment of the present invention, in described quality ratio range, adjust the consumption of silica sand, cement, water, prepare multiple different cement casing, thus simulate different infiltration situations.
In a specific embodiment of the present invention, in described cement casing, five faces of inner side are upstream face, and the angle that medial surface comprises is inner corner trim; Five faces in outside are back side, and its corresponding angle comprised is external corner.
In a specific embodiment of the present invention, in described step (d), the construction thickness of determined water-repellent paint is the lowest construction thickness of described water-repellent paint.
In a specific embodiment of the present invention, in described step (d), described thickness equations is H=m/ ρ S
Wherein,
H is construction thickness (mm),
M is brushing quality (unit: g);
ρ is the density (unit: g/mm of waterproof material
3);
S is brushing area (mm
2).
In a specific embodiment of the present invention, in step (d), described water percolating capacity is measured by thieving paper weight method, quantizes water absorbing capacity by the weight change before and after thieving paper.
A second aspect of the present invention provides a kind of cement casing for method of testing of the present invention; Wherein,
Described cement casing comprises casing lateral surface, box inside face and casing corner, thus can each position at construction simulation scene, comprises upstream face, back side harmonizing yinyang angular position;
In described cement casing, five faces of inner side are upstream face, and the angle that medial surface comprises is inner corner trim; Five faces in outside are back side, and its corresponding angle comprised is external corner.
Accompanying drawing explanation
Fig. 1 is the mould of cement casing;
Fig. 2 is the cement casing of brushing polymer cement waterproof paint.
Embodiment
The present inventor, through extensive and deep research, by improving preparation technology, obtains a kind of quick, easy appraisal procedure based on polymer cement waterproof material.Complete the present invention on this basis.
Inventive concept of the present invention is as follows:
The present invention discloses a kind of quick, easy appraisal procedure based on polymer cement waterproof material, is assessed the waterproof effect of polymer cement waterproof material by the upstream face of cement casing, back side harmonizing yinyang angle and is drawn minimum construction thickness.This method comprises the cement casing of construction simulation environment, and polymer cement waterproof material.Wherein cement casing by silica sand, cement and water three part form, corresponding proportioning is 3 ~ 5:1:0.5 ~ 1.0 (quality).Polymer cement waterproof material comprises one-component, two component two kinds of specifications, comprises polymer cement waterproof paint, polymer cement waterproof slurry, Polymer cement materials.The present invention has the features such as structure is simple, easy to operate, practical.
In the present invention, term " contains " or " comprising " represents that various composition can be applied in potpourri of the present invention or composition together.Therefore, term " primarily of ... composition " and " by ... form " be included in term and " contain " or in " comprising ".
Below describe in detail to various aspects of the present invention:
Method of testing
A method of testing for water-repellent paint, it comprises the steps:
A () provides cement material;
B () described cement material is prepared into cement casing by mould; Described cement casing comprises casing lateral surface, box inside face and casing corner, thus can each position at construction simulation scene, comprises upstream face, back side harmonizing yinyang angular position;
C () applies described water-repellent paint in described cement box surface, obtain the cement casing after applying water-repellent paint;
D () measures the water percolating capacity of the cement casing after described coating water-repellent paint, thus determine the construction thickness of water-repellent paint.
In the method for testing of water-repellent paint of the present invention, prepared by cement box body, shaping, maintenance operations is easy, easily occurs Seepage after adding water; Can the position such as upstream face, back side harmonizing yinyang angle at construction simulation scene easily.
In a specific embodiment of the present invention, described water-repellent paint is polymer cement waterproof material or polymer emulsion water-repellent paint.
The water resistance that the present invention can also be used for other brushings or roller coating class waterproof product measures.
In a specific embodiment of the present invention, described polymer cement waterproof material comprises polymer cement waterproof paint, polymer cement waterproof slurry, Polymer cement materials or its combination.
In a specific embodiment of the present invention, described cement material is made up of silica sand, cement, water three kinds of components, and the quality proportioning of silica sand, cement, water is 3 ~ 5:1:0.5 ~ 1.0.
In a specific embodiment of the present invention, in described quality ratio range, adjust the consumption of silica sand, cement, water, prepare multiple different cement casing, thus simulate different infiltration situations.
Inventor thinks, the silica sand provided, cement and water ratio within limits, can simulate different infiltration situations within the scope of this, and preparation is multiple at present, the difference mainly in order to avoid causing because of human factor.
In a specific embodiment of the present invention, in described cement casing, five faces of inner side are upstream face, and the angle that medial surface comprises is inner corner trim; Five faces in outside are back side, and its corresponding angle comprised is external corner.
The conventional term that described " upstream face ", " back side ", " inner corner trim ", " external corner " (being collectively referred to as at " negative and positive angle ") are those skilled in the art, is described as follows:
" upstream face ": below underground water table or have the position of effect of water pressure on concrete structure surface to be called upstream face under water.As: the inner wall surface of water tank, inner bottom surface.The wall face contacted with the soil body below basement underground water table, base plate bottom surface, needs earthing or is positioned at outdoor top board face, room, ground.
" back side ": relative to the one side of upstream face.
" negative and positive angle " comprises inner corner trim and external corner, specifically comprises metope inner corner trim and metope external corner.Such as, metope inner corner trim refers to the corner fallen in, as the angle of end face and surroundings wall; Metope external corner refers to the corner protruded, as the angle that turning, aisle two wall is formed.
In a specific embodiment of the present invention, in described step (d), the construction thickness of determined water-repellent paint is the lowest construction thickness of described water-repellent paint.
In a specific embodiment of the present invention, in described step (d), described thickness equations is H=m/ ρ S
Wherein,
H is construction thickness (mm),
M is brushing quality (unit: g);
ρ is the density (unit: g/mm of waterproof material
3);
S is brushing area (mm
2).
In a specific embodiment of the present invention, in step (d), described water percolating capacity is measured by thieving paper weight method, quantizes water absorbing capacity by the weight change before and after thieving paper.
The preferred embodiment of the present invention
The object of the invention is to carry out quick, easy assessment by a kind of position such as upstream face, back side harmonizing yinyang angle of cement casing to polymer cement waterproof material, determine the lowest construction thickness of polymer cement waterproof material.
Technical scheme of the present invention is as follows: a kind of method of testing of polymer cement waterproof material comprises cement casing, and principal ingredient is silica sand, Portland cement and water, and mass ratio is 3 ~ 5:1:0.5 ~ 1.0.
The preparation of cement casing mainly comprises the following steps:
1) mould (as shown in Figure 1) is got out, uniform application machine oil on mould;
2) take a certain amount of silica sand, Portland cement and water and be placed in cement mixer, stir
3) sample that stirs is loaded in mould, with putty knife compacting, floating.
4) model the prepared demoulding after 24h, is placed in water maintenance 7d.
Assessment test mainly comprises the following steps:
1) polymer cement waterproof material is weighed in proportion, stir;
2) according to the consumption of coating thickness, brushing areal calculation polymer cement waterproof material, uniform application in cement casing the position such as inside surface, outside surface (coating itself can not uniform application time, a certain amount of water can be added, reach the requirement of uniform application).
3) after brushing, cement casing maintains four days at normal temperatures, adds certain water, coloured thieving paper on cement bottom half pad, observes whether seepage determine lowest construction thickness.
Advantage of the present invention: the various situations that the cement box body preparation in said method is simple, easy maintenance, the construction simulation scene pressed close to very much run into; Method of testing is easy and simple to handle, can draw lowest construction thickness fast and effectively, better guide field construction, the effective construction quality ensureing waterproofing work.
As no specific instructions, various raw material of the present invention all can be obtained by commercially available; Or prepare according to the conventional method of this area.Unless otherwise defined or described herein, all specialties used herein and scientific words and those skilled in the art the meaning be familiar with identical.In addition any method similar or impartial to described content and material all can be applicable in the inventive method.
Other aspects of the present invention, due to disclosure herein, are apparent to those skilled in the art.
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, measures according to national standard usually.If there is no corresponding national standard, then according to general international standard, normal condition or carry out according to the condition that manufacturer advises.Unless otherwise indicated, otherwise all numbers are weight portion, and all number percent is weight percentage, and described polymer molecular weight is number-average molecular weight.
Unless otherwise defined or described herein, all specialties used herein and scientific words and those skilled in the art the meaning be familiar with identical.In addition any method similar or impartial to described content and material all can be applicable in the inventive method.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
The mould of step one cement casing is as shown in Figure 1, first in the inside surface uniform application proper amount of machine oil of mould, stand-by.
Step 2 takes the silica sand of 6.4kg, the Portland cement of 1.6kg and the water of 960g, uses homo-mixer to be uniformly dispersed.
The potpourri be stirred in step 2 is poured in mould by step 3, repeatedly smashes and is inserted to closely knit, after striking off rear placement 24h, carry out the demoulding, put into water maintenance 7d(and prepare multiple cement casing simultaneously, synchronously test with putty knife).
Cement casing good for maintenance in step 3 takes out by step 4 from water, air-dry, test for added water, observes leakage scenarios, and writing time, the cement casing choosing seepage more serious is stand-by.
Step 5 takes a certain amount of two-component polymer cement waterproof paint (A(liquid material): B(powder)=1:1.5), wherein A:100g, B:150g, homo-mixer 1000 revs/min, stirs stand-by.
Comprise liquid material and powder two kinds of components in two component product, the liquid material of different product is different from the ratio of powder, needs the ratio illustrated according to the packing of product to carry out weighing, preparing burden during test.
Step 6 is with 2.5kg/m
2the thickness 1.5mm of consumption gained be standard, calculate required coating consumption.Cement casing is long: 22cm, wide: 17cm, high: 6cm, area: 842cm
2; Consumption then needed for 1 cement interior is 210.5g.Be coated with thickness and be set as 1.5mm, 1.0mm, 0.5mm, 0.3mm, the coating consumption then needed is respectively 210.5g, 140.3g, 70.2g, 42.1g coating, brushes at twice, every minor tick 12 ~ 24h, when coating itself can not evenly be brushed, appropriate water can be added and regulate.
Step 7 will be coated with the cement casing normal temperature maintenance 4d brushed in step 7, wherein brushing thickness is the inner corner trim appearance cracking of the cement casing of 1.5mm.
Step 8 adds a certain amount of water and wraps up coloured thieving paper around being coated with in the cement casing that brushes, observes cement casing.
Experimental result: brushing thickness is that 0.3mm cement casing occurs seepage on the 3rd day; , within 20 days, there is seepage in the cement casing of 0.5mm thickness; 1.5 and cement casing 3 moonsets of 1.0mm occur seepage.There is cracking in the cement casing inner corner trim of 1.5mm, the unsuitable thick brush of this coating is described.Therefore the lowest construction thickness of this coating is 1.0mm.
Testing crew of the present invention observes following situation, be then judged to be corresponding " ne-leakage ", " seepage " or " cracking " situation:
● " ne-leakage ": cement box external surface water stain-free, open fire, coloured thieving paper are unchanged
● " seepage ": cement box external surface has water stain, open fire or coloured thieving paper moisture absorption variable color
● " cracking ": waterproof material occurs microgroove or slight crack in film forming rear surface
The foregoing is only preferred embodiment of the present invention, and be not used to limit substantial technological context of the present invention, substantial technological content of the present invention is broadly defined in the right of application, any technology entities that other people complete or method, if with application right define identical, also or a kind of change of equivalence, be all covered by being regarded as among this right.
The all documents mentioned in the present invention are quoted as a reference all in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read foregoing of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (10)
1. a method of testing for water-repellent paint, is characterized in that, comprises the steps:
A () provides cement material;
B () described cement material is prepared into cement casing by mould; Described cement casing comprises casing lateral surface, box inside face and casing corner, thus can each position at construction simulation scene, comprises upstream face, back side harmonizing yinyang angular position;
C () applies described water-repellent paint in described cement box surface, obtain the cement casing after applying water-repellent paint;
D () measures the water percolating capacity of the cement casing after described coating water-repellent paint, thus determine the construction thickness of water-repellent paint.
2. the method for claim 1, is characterized in that, described water-repellent paint is polymer cement waterproof material or polymer emulsion water-repellent paint.
3. method as claimed in claim 2, is characterized in that, described polymer cement waterproof material comprises polymer cement waterproof paint, polymer cement waterproof slurry, Polymer cement materials or its combination.
4. the method for claim 1, is characterized in that, described cement material is made up of silica sand, cement, water three kinds of components, and the quality proportioning of silica sand, cement, water is 3 ~ 5:1:0.5 ~ 1.0.
5. method as claimed in claim 4, is characterized in that, adjust the consumption of silica sand, cement, water in described quality ratio range, prepare multiple different cement casing, thus simulate different infiltration situations.
6. the method for claim 1, is characterized in that, in described cement casing, five faces of inner side are upstream face, and the angle that medial surface comprises is inner corner trim; Five faces in outside are back side, and its corresponding angle comprised is external corner.
7. the method for claim 1, is characterized in that, in described step (d), the construction thickness of determined water-repellent paint is the lowest construction thickness of described water-repellent paint.
8. the method for claim 1, is characterized in that, in described step (d), described thickness equations is H=m/ ρ S
Wherein,
H is construction thickness (mm),
M is brushing quality (unit: g);
ρ is the density (unit: g/mm of waterproof material
3);
S is brushing area (mm
2).
9. the method for claim 1, is characterized in that, in step (d), described water percolating capacity is measured by thieving paper weight method, quantizes water absorbing capacity by the weight change before and after thieving paper.
10. the cement casing for method of testing as claimed in claim 1; Wherein,
Described cement casing comprises casing lateral surface, box inside face and casing corner, thus can each position at construction simulation scene, comprises upstream face, back side harmonizing yinyang angular position;
In described cement casing, five faces of inner side are upstream face, and the angle that medial surface comprises is inner corner trim; Five faces in outside are back side, and its corresponding angle comprised is external corner.
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| CN201310630100.8A CN104678079A (en) | 2013-11-29 | 2013-11-29 | Testing method of waterproof coating |
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| CN201310630100.8A CN104678079A (en) | 2013-11-29 | 2013-11-29 | Testing method of waterproof coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157674A (en) * | 2018-11-08 | 2020-05-15 | 立邦涂料（中国）有限公司 | Rapid testing method for plane thick coating cracking resistance of water-based polymer wall coating material |
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| 余剑英等: "水泥基渗透结晶型防水涂料抗渗透试验方法比较", 《新型建筑材料》, no. 3, 25 March 2006 (2006-03-25), pages 37 - 38 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111157674A (en) * | 2018-11-08 | 2020-05-15 | 立邦涂料（中国）有限公司 | Rapid testing method for plane thick coating cracking resistance of water-based polymer wall coating material |
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