On-site detection method and detection device for spraying amount of concrete protective material
阅读说明:本技术 一种混凝土防护材料喷涂量的现场检测方法和检测装置 (On-site detection method and detection device for spraying amount of concrete protective material ) 是由 刘铁男 詹仰东 于 2019-10-15 设计创作,主要内容包括:本发明涉及一种混凝土防护材料喷涂量现场检测方法,包括在一个混凝土防护材料喷涂区域内,均匀地粘贴多个酸碱试纸;实施混凝土防护材料喷涂;根据酸碱试纸的颜色变化,确定所述混凝土防护材料喷涂量是否达到标准。本发明利用无机渗透结晶型水溶液的本身特性,在施工现场就能够依据喷涂到酸碱度试纸上所显现的颜色来判定单位面积内喷涂的防护材料施工用量,判断是否达到设计要求。另外,本发明还涉及用于前述混凝土防护材料喷涂量现场检测的检测装置。(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.)
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;
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 in construction can and only can contact the acid-base test paper from the opening.
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 said waterproof base and said front cover are both made of plastic.
8. The test device as claimed in claim 5, wherein the front cover is detachably disposed on the waterproof base, so that the acid-base test paper is easy to replace.
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 issues for engineers. The protective spraying of organic coating materials on the surface of a concrete structure is 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 on the surface of the concrete structure, so that the integral waterproof and comprehensive durable protective 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 sprayed material is not basically remained on the surface of the concrete, and the change of the color and the surface characteristics of the surface of the concrete can not be observed by naked eyes, so that during site construction, the quality control in the construction process can not be directly detected as the thickness of a coating by the traditional skin-attached protection technology of an organic resin coating material, and a new detection method and means are needed so as to ensure that the construction quality construction progress can be controlled on site in engineering units in time.
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 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;
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 spraying area of the concrete protective material 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 shows a schematic view of the distribution of a plurality of detection devices within a concrete protective material spray area;
FIG. 2 is a schematic view of the whole detection 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. 7.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to 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 means is substantially rectangular in shape and has an area of about 6cm2~18cm2The 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 invention 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 the materials used in other spraying operations are contacted with acid-base test paper to generate regular color change.
The acid-base test strips are 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 manager will make a request for each spraying amount. 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
The cross-sectional view of the
The
Preferably, the illustrated embodiment also has a retaining
The
The back of the
Fig. 6 shows a schematic structural view of the
The
The contour of the
Preferably, the
Preferably, the side of the
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.
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