CN110672599B - On-site detection method and detection device for spraying amount of concrete protective material - Google Patents
On-site detection method and detection device for spraying amount of concrete protective material Download PDFInfo
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- CN110672599B CN110672599B CN201910979592.9A CN201910979592A CN110672599B CN 110672599 B CN110672599 B CN 110672599B CN 201910979592 A CN201910979592 A CN 201910979592A CN 110672599 B CN110672599 B CN 110672599B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/80—Indicating pH value
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
- G01N21/293—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection with colour charts, graduated scales or turrets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention relates to a concrete protective material spraying amount field detection method, which comprises the steps of uniformly sticking a plurality of acid-base test paper in a concrete protective material spraying area; spraying a concrete protective material; and determining whether the spraying amount of the concrete protective material reaches the standard or not according to the color change of the acid-base test paper. The invention utilizes the characteristics of the inorganic permeable crystallization type aqueous solution, can judge the construction amount of the protective material sprayed in unit area according to the color displayed by spraying the protective material on the pH test paper on a construction site, and judges whether the protective material meets the design requirements. In addition, the invention also relates to a detection device for the field detection of the spraying amount of the concrete protective material.
Description
Technical Field
The invention relates to a concrete surface protection construction technology, in particular to a construction quality inspection technology.
Background
The concrete material is a multi-phase multi-component rigid material containing a certain micro-porous structure, is used as a first large building engineering material, and has wide application, such as houses of industrial and civil buildings, water conservancy and hydropower dams, highway bridges, tunnel supporting linings, main body frame structures of nuclear industry, ports and wharfs, various underground buildings and the like. However, due to various factors such as the material characteristics of the concrete material, the construction control technology, the complexity of the engineering operation process and the like, the service life of the concrete is difficult to reach the design target of the engineering. Therefore, the overall waterproofness and overall durability of concrete structures have been important research topics for engineers. The concrete structure surface protective spraying organic coating materials are the most widely applied technical means at present, such as epoxy resin coating, polyurea coating, polyurethane coating, polymer cement coating and the like, and the action mechanism of the organic resin coating materials is that a protective film type fur coat is adhered to the surface of the concrete structure, so that the overall waterproof and comprehensive durability protection functions of the concrete structure are realized. The thickness of the coating needs to be detected in the construction process to ensure the realization of the protection function.
In recent years, a novel concrete waterproof and durable protection technology, namely a nano-modified inorganic silicate permeable crystallization type aqueous solution concrete protection material technology, appears. The product can penetrate to the surface of concrete with the depth of 40-70 mm, quickly react with calcium ions in the concrete to generate C-S-H gel crystals, close micro pores, capillary pores and micro cracks in a certain depth range of the concrete surface layer, and improve the compactness of the concrete surface layer, so that the comprehensive durability performances of the concrete, such as water leakage resistance, carbonization corrosion resistance, chloride ion permeability resistance, freeze thawing resistance, weak acid and weak alkali resistance, and the like, are realized, and the action effect of the product is as permanent long-term stability as that of a concrete body material. However, after the inorganic permeable crystallization type aqueous solution material is sprayed on the surface of concrete, the spraying material is not basically remained on the surface of the concrete, and the change of the surface color and the surface characteristics of the concrete can not be observed by naked eyes, so that when in site construction, the thickness of a coating which can not be directly detected by the traditional skin-sticking type protection technology of an organic resin coating material in the quality control of the construction process needs to have a new detection method and means so as to ensure that the construction quality construction progress of a project unit can be controlled in time on site.
Disclosure of Invention
Object of the Invention
In order to solve the problem of quality control in the field construction process of the inorganic permeable crystallization type aqueous solution protective material, the invention provides a detection method for timely and conveniently controlling the construction amount on the field.
Technical scheme
The technical scheme of the invention comprises the following steps: a method for on-site detecting the spraying amount of concrete protective material comprises,
uniformly sticking a plurality of acid-base test paper in a concrete protective material spraying area;
spraying a concrete protective material, wherein the concrete protective material is an inorganic silicate permeable crystallization type aqueous solution concrete protective material;
and determining whether the spraying amount of the concrete protective material reaches the standard or not according to the color change of the acid-base test paper.
Preferably, the method for detecting the spraying amount of the concrete protective material on site comprises the step of removing the acid-base test paper from the spraying area after the spraying amount of the concrete protective material reaches a standard.
Preferably, in the method for detecting the spraying amount of the concrete protective material on site, the spraying of the concrete protective material includes multiple spraying, and after each spraying, the acid-base test paper is removed from the spraying area.
Preferably, the method for detecting the spraying amount of the concrete protective material on site comprises a plurality of detection devices adhered in a spraying area, wherein each detection device comprises the acid-base test paper,
the removing of the acid-base test paper from the spray area comprises removing the acid-base test paper from the detection device.
A detection device for the on-site detection method of the spraying amount of the concrete protective material comprises,
the waterproof base is adhered to the concrete protective material spraying area before construction;
the front cover is arranged on the waterproof base and comprises at least one opening facing the front;
acid-base test paper arranged between the waterproof base and the front cover,
the concrete protective material sprayed in construction can and only can contact the acid-base test paper from the opening.
Preferably, the front cover comprises an identification area, the identification area comprises a surface for recording construction parameters of the acid-base test paper, and the construction parameters comprise an area position, a construction second time and a construction date.
Preferably, the waterproof base and the front cover are both made of plastic.
Preferably, the front cover is detachably arranged on the waterproof base, so that the acid-base test paper is convenient to replace.
Technical effects
The invention utilizes the characteristics of the inorganic permeable crystallization type aqueous solution, can judge the construction amount of the protective material sprayed in unit area according to the color displayed by spraying the protective material on the pH test paper on a construction site, and judges whether the protective material meets the design requirements.
The detection device can conveniently acquire results independently at a plurality of engineering nodes such as primary construction and secondary construction, and the detection results are convenient to store, so that the construction amount of the protective materials in the construction process can be monitored.
Drawings
The present invention will be described in detail with reference to the following drawings.
FIG. 1 is a schematic view showing the distribution of a plurality of detection devices in a concrete protective material spray area;
FIG. 2 is a schematic view of the entire inspection apparatus according to the embodiment of the present invention;
FIG. 3 shows a cross-sectional view A-A of the cartridge of the detection device of FIG. 2;
FIG. 4 is a schematic diagram showing the structure of the base of the detecting device in FIG. 2;
FIG. 5 shows a cross-sectional view of the base of FIG. 4 taken along line B-B;
FIG. 6 is a schematic view showing the front cover of the detecting device of FIG. 2;
FIG. 7 shows a cross-sectional view taken along line C-C of the front cover of FIG. 6;
fig. 8 shows an enlarged view of a portion D in fig. 8.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
For a better understanding of the present invention, reference will now be made in detail to the present embodiments of the invention, which are illustrated in the accompanying drawings.
Fig. 1 shows a schematic distribution of a plurality of detection devices in a concrete protective material spraying area, which represents the implementation state of the detection method of the invention in a construction site.
The on-site detection method for the spraying amount of the concrete protective material comprises the following steps,
before the protective material spraying is carried out on a concrete protective material spraying area 1, a plurality of detection devices (with acid-base test paper) 2 are approximately uniformly stuck in the area, and the proportion of the detection devices covering the spraying area is less than 1%. Preferably, the detection device is substantially rectangular in shape and has an area of about 6cm 2 ～18cm 2 The length is about 3-6cm, and the width is about 2-3 cm.
When the protective material is sprayed on the acid-base test paper and the surface of the concrete around the acid-base test paper, the unit area spraying amount of the protective material sprayed on the acid-base test paper can reflect the unit area spraying amount on the surface of the concrete around the acid-base test paper. Meanwhile, the protective material sprayed on the surface of the surrounding concrete can permeate into the concrete covered below the test paper from the edge of the acid-base test paper.
The design standard of the detection device is that the total area covered in the area range is as small as possible, the area of each detection device is also as small as possible, so that materials sprayed on the surrounding concrete surface can uniformly penetrate into the concrete area covered by the detection device to form uniform protection as possible, the area covered by the acid-base test paper is relatively small, the amount of the protective materials penetrating into the area covered by the acid-base test paper is basically the same as that of the surrounding area, and the protective effect of the protective materials on the area is not influenced. Meanwhile, the color development area of the acid-base test paper on each detection device is not too small, so that the color change is suitably observed by human visual observation.
The acid-base test paper is an important means for detecting the spraying amount of the protective material. In the embodiment of the invention, the detected object is a nano-modified inorganic silicate permeable crystallization type aqueous solution concrete protective material, and the protective material is colorless when sprayed on the surface of concrete. The characteristic that the material can make the test paper develop color after contacting with the acid-base test paper is utilized, so that the spraying amount per unit area is displayed as the color change of the acid-base test paper, and the standard of the spraying amount is converted into the color standard of the color change of the acid-base test paper. In the embodiment of the invention, when the spraying amount of the nano-modified inorganic silicate permeable crystallization type aqueous solution concrete protective material reaches the standard, the acid-base test paper turns into deep red.
Of course, the method is not limited to the nano-modified inorganic silicate permeable crystallization type aqueous solution concrete protective material, and the spraying amount can be detected by adopting the scheme of the invention when materials used in other spraying operations are contacted with acid-base test paper to generate regular color change.
The acid-base indicator paper is preferably evenly distributed in the spray area, although this is not strictly required to be even, but generally even, and the entire area can be detected.
And after the acid-base test paper is well adhered, spraying a concrete protective material. General construction requires that the protective material be sprayed at least twice. In order to ensure the construction quality, the quality management party can make requirements on the spraying amount of each time. Therefore, the acid-base test paper is compared with the color chart after each spraying to see whether the color standard is met, namely whether the spraying amount standard is met.
Therefore, when the detection method of the present invention is used, the acid-base test paper is usually removed from the spraying area after each spraying. And before the next spraying, sticking new acid-base test paper again, and removing the acid-base test paper again after the next spraying is finished. After each construction, whether the spraying quantity standard is met or not can be determined by means of the color development condition of the acid-base test paper, the spraying is supplemented under the condition that the spraying quantity standard is not met until each position in the spraying area meets the standard, and then the acid-base test paper is removed.
After the acid-base test paper is removed, the acid-base test paper can be subjected to position marking and stored for later engineering acceptance. The acid-base test paper can be removed by directly removing each detection device and directly storing, or the acid-base test paper can be separately removed from the detection device and stored. The latter can more conveniently remove the acid-base test paper from the concrete spraying area and reduce the cost of the detection device.
FIG. 2 shows a schematic view of the structure of the detecting unit of the present invention. As shown, the detection device 2 includes a waterproof base 21, a front cover 22 and a card seat 23. In fig. 2, the waterproof base 21 is covered by the front cover 22, and the specific structure can be seen from fig. 4. The waterproof base 21 and the front cover 22 have the same profile, are placed on top of each other and are held in snap-fit by the clip 23 from one and the same end 214, 224.
The cross-sectional view of the cartridge 23 in the direction of A-A can be seen in FIG. 3. The holder 23 includes a receiving groove 231 capable of receiving the waterproof base 21 and the front cover 22. The waterproof base 21 and the front cover 22 are stacked along the width direction of the containing groove 231, and the stacked thickness of the waterproof base 21 and the front cover 22 is equal to the width h of the containing groove 231, so that the waterproof base 21 and the front cover 22 are reliably held in the containing groove 231, and the waterproof base 21 and the front cover 22 are not easily separated from each other.
The waterproof base 21 is constructed as shown in fig. 4. The test strip region 210 is a substantially rectangular plate, and occupies a portion of the base body 211, and the test strip region 210 surrounds the annular sealing slot 213. The test paper section 210 and the seal catching groove 213 are formed on the face of the base body 211 facing the front cover 22. The profile of seal pocket 213 can be seen in cross-section through B-B of FIG. 5. The sealing slot 213 is used for cooperating with the annular sealing protrusion 223 on the front cover 22, when the waterproof base 21 and the front cover 22 are overlapped and engaged by the socket 23, a waterproof seal is formed around the test paper area 21, so as to prevent the concrete protective material from entering the test paper area 21 from the gap between the waterproof base 21 and the front cover 22, and meanwhile, the cooperation of the sealing slot 213 and the sealing protrusion 223 will also play a role in overlapping and positioning, so that the waterproof base 21 and the front cover 22 are conveniently overlapped and positioned. The test strip area 21 may be designed to be slightly recessed (as seen in fig. 5) to facilitate the positioning of the acid-base test strip therein.
Preferably, there is also a retaining portion 215, shown in the illustrated embodiment, alongside the strip area 210, said retaining portion 215 being disposed on either side of the body 211 adjacent the end 214, shown as an arc recessed inwardly from the rectangular edge. The arc-shaped design is convenient for the fingers of a person to keep.
The waterproof base 21 is preferably formed by injection molding of materials such as plastics which do not react with the protective materials and are light and waterproof, and the phenomenon that the protective materials penetrating from the bottom surface of the base affect the color development of the acid-base test paper is avoided. Such as PC, PVC, PP, ABS, etc.
The back of the waterproof base 21 includes an adhesive portion adapted to adhere to a concrete surface, such as a removable and replaceable non-stick adhesive layer.
Fig. 6 shows a schematic structural view of the front cover 22. The front cover 22 has the same contour and size as the waterproof base 21. At the same position on the front cover body 221, the test paper section 220, the annular seal rib 223, and the holding portion 225 are also included.
The test strip area 220 is opposite to the test strip area 210, except that the test strip area 220 penetrates the front cover body 221 to form an opening (seen in a cross-sectional view along C-C in fig. 7), which is preferably divided into a plurality of cells by ribs 222. After the front cover 22 is stacked on the waterproof base 21, the test paper is accommodated in the test paper area 210 of the base and sandwiched between the front cover 22 and the waterproof base 21. After being sprayed, the protective material reaches the surface of the acid-base test paper through the opening and only reaches the surface of the acid-base test paper through the opening to react with the test paper.
The contour of the annular seal rib 223 is formed into a contour having a small top and a large root, as seen in fig. 8, which is an enlarged view of portion D in fig. 7, and the width of the root matches the width of the seal groove 213. This enables the waterproof base 21 and the front cover 22 to be quickly positioned and engaged when they are stacked. It is understood that the positions of the slots and ribs of the front cover 22 and the waterproof base 21 can be interchanged.
Preferably, the front cover 22 is formed by injection molding of a lightweight and waterproof material such as plastic that does not react with the protective material, so as to prevent the protective material penetrating from a position other than the opening from affecting the color development of the acid-base test paper. Such as PC, PVC, PP, ABS, etc.
Preferably, the side of the front cover 22 facing away from the waterproof base, otherwise known as the front surface, comprises an identification area. Preferably, the identification area is located between two holding portions 225. The identification area is used for recording construction parameters of the acid-base test paper, and the construction parameters comprise necessary quality information such as area positions, construction times, construction dates and the like. The marking zone comprises a flat surface suitable for writing or comprises a flat surface suitable for pasting paper.
By adopting the detection device, the acid-base test paper can receive the sprayed protective material from the opening only, so that the spraying amount per unit area on the acid-base test paper is the same as that on the surface of the surrounding concrete, the color development result on the acid-base test paper can calibrate the spraying amount on the surface of the concrete, and the overall effectiveness and reliability of construction quality are ensured.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for on-site detecting the spraying amount of a concrete protective material comprises the following steps,
uniformly sticking a plurality of acid-base test paper in a concrete protective material spraying area;
spraying a concrete protective material, wherein the concrete protective material is an inorganic silicate permeable crystallization type aqueous solution concrete protective material;
and determining whether the spraying amount of the concrete protective material reaches the standard or not according to the color change of the acid-base test paper.
2. The method for detecting the spraying amount of the concrete protective material on site as claimed in claim 1, wherein the acid-base test paper is removed from the spraying area after the spraying amount of the concrete protective material reaches a standard.
3. The method for detecting the spraying amount of the concrete protective material on site as claimed in claim 1, wherein the spraying of the concrete protective material includes spraying a plurality of times, and after each spraying, the acid-base test paper is removed from the spraying area.
4. The method for on-site detecting the spraying amount of the concrete protective material as claimed in claim 1, comprising a plurality of detecting devices attached to the spraying area, each detecting device comprising one of the acid-base test strips,
the removing of the acid-base test paper from the spray area comprises removing the acid-base test paper from the detection device.
5. A testing device for use in the testing method of any preceding claim, comprising,
a waterproof base;
the front cover is positioned on the waterproof base and comprises at least one opening facing the front;
an acid-base test paper arranged between the waterproof base and the front cover,
the concrete protective material sprayed during construction can contact the acid-base test paper from the opening only.
6. The testing device of claim 5, wherein the front cover includes an identification area including a surface for recording the acid-base indicator paper construction parameters including location of the area, construction sub-second, and construction date.
7. The testing device of claim 5, wherein the waterproof base and the front cover are both made of plastic.
8. The test device of claim 5, wherein the front cover is detachably disposed on the waterproof base, so that the acid-base test paper is easy to replace.
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| AU2007318532B2 (en) * | 2006-11-09 | 2012-11-01 | Denki Kagaku Kogyo Kabushiki Kaisha | Set accelerator and technique for spraying with the same |
| JP2014185958A (en) * | 2013-03-25 | 2014-10-02 | Seiko Epson Corp | Coloration measuring device |
| CN104155408B (en) * | 2014-07-09 | 2016-05-11 | 深圳大学 | A kind of chloride ions concentration of concrete is method and the test paper of test fast |
| CN109612989A (en) * | 2019-01-14 | 2019-04-12 | 中南大学 | Concrete carbonization depth measures reagent and its methods for making and using same |
| CN109912248B (en) * | 2019-02-27 | 2020-01-17 | 詹仰东 | Nano modified silicate osmotic crystallization material and use method thereof |
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| CN105388150A (en) * | 2015-10-29 | 2016-03-09 | 大连理工大学 | Oxytetracycline test paper based on chromatic aberration comparison, using method and making method |
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