CN107621250B - Roughness detection method for concrete prefabricated part joint surface - Google Patents
Roughness detection method for concrete prefabricated part joint surface Download PDFInfo
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- CN107621250B CN107621250B CN201711077274.0A CN201711077274A CN107621250B CN 107621250 B CN107621250 B CN 107621250B CN 201711077274 A CN201711077274 A CN 201711077274A CN 107621250 B CN107621250 B CN 107621250B
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- plasticine
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- square frame
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- steel square
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- 238000001514 detection method Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 26
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 26
- 239000010935 stainless steel Substances 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000012153 distilled water Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000004898 kneading Methods 0.000 claims abstract description 3
- 238000005303 weighing Methods 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 abstract description 12
- 239000004576 sand Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 5
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004439 roughness measurement Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The invention discloses a concrete member joint surfaceThe roughness detection method comprises the following steps: 1) before testing, removing impurities on the surface of a tested member, and then selecting a proper area; coating a layer of demoulding oil on the selected area, and fixing the stainless steel square frame in the area; 2) filling the stainless steel square frame with plasticine until the stainless steel square frame is flush with the surface of the square frame; 3) removing the stainless steel square frame, and removing the plasticine attached to the surface of the component; 4) kneading the plasticine into a whole block, and weighing the plasticine with the weight m in the air
1To an accuracy of 0.01g, the plasticine is then placed in a basket and together in distilled water, the mass m of the plasticine in the water being weighed
2To the nearest 0.01 g; and calculating the roughness. The method for testing the surface roughness of the concrete by using the plasticine can test the roughness of the concrete member in the horizontal, vertical and inclined directions.
Description
Technical Field
The invention relates to a method for measuring the surface roughness of concrete, in particular to a method for detecting the roughness of a joint surface of a concrete prefabricated part.
Background
The existing concrete surface roughness measurement method adopts a sand-pouring method. The concrete processing method comprises the following steps of enclosing four plastic plates or three-ply plates on a concrete processing surface, enabling the highest plane of each plate to be parallel and level with the highest point of the processing surface, pouring standard sand on the surface and troweling the sand on the surface of each plastic plate, then completely sweeping out the sand on the inner side of each plastic plate, measuring the volume of the sand by using a measuring cylinder, and expressing the roughness of the processing surface by using a sand pouring method, wherein the concrete processing surface comprises the following steps:
and (4) filling sand with the average depth h equal to the volume of the standard sand/the cross-sectional area of the processing surface.
The residual sand on the surface of the concrete after the test by the sand filling method is not easy to be thoroughly removed, and the method cannot be used on the surface of a non-horizontal plane and is not suitable for the practical application of engineering.
Disclosure of Invention
In order to overcome the defect that the sand-pouring method cannot be applied to a non-horizontal plane, the invention aims to provide a method for testing the roughness of the surface of concrete by using plasticine, which can test the roughness of a concrete member in horizontal, vertical and inclined directions.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The invention provides a roughness detection method of a concrete prefabricated part joint surface, which comprises the following steps:
1) before testing, removing impurities on the surface of a tested member, and then selecting a proper area; coating a layer of demoulding oil on the selected area, and fixing the stainless steel square frame in the area;
2) filling the stainless steel square frame with plasticine until the stainless steel square frame is flush with the surface of the square frame;
3) removing the stainless steel square frame, and removing the plasticine attached to the surface of the component;
4) kneading the plasticine into a whole block, and weighing the plasticine with the weight m in the air
1To an accuracy of 0.01g, the plasticine is then placed in a basket and together in distilled water, the mass m of the plasticine in the water being weighed
2To the nearest 0.01 g; and calculating the roughness.
According to the method for detecting the roughness of the joint surface of the concrete prefabricated part, in the step 2), the concrete prefabricated part can be extruded by hands in the process, the concave-convex parts of the surface of the concrete prefabricated part are filled with plasticine, and the surplus plasticine is removed by a spatula.
According to the method for detecting the roughness of the joint surface of the concrete prefabricated part, in the step 3), if part of plasticine is stuck in the hole, the cement can be hooked out by using a steel wire.
The roughness detection method of the joint surface of the concrete prefabricated part comprises the following steps of 4), calculating the roughness by using a formula:
the unit mm.
The roughness detection method for the joint surface of the concrete prefabricated part can arrange a plurality of measuring areas for improving the accuracy, and the average value of all the measuring areas is taken during calculation.
The method for detecting the roughness of the joint surface of the concrete prefabricated part further comprises the step 5), and after the test is finished, the area coated with the mold oil is cleaned by using ethanol.
1) The method can be applied to the surface roughness detection of the concrete prefabricated part on the engineering site, and provides an effective control means for the quality of the fabricated building.
2) Compared with the traditional sand-filling method, the method has the advantages that the speed of measuring the surface roughness of the concrete is increased under the condition of lower cost, and the data is stable and accurate.
Drawings
FIG. 1 is a top view of a concrete surface roughness test method;
FIG. 2 is a side view of a concrete surface roughness test method;
FIG. 3 is a schematic diagram of measuring the volume of plasticine by a hydrostatic balance
Wherein the numerical designations denote the following:
1-concrete surface; 2-specification stainless steel square frame of 100 × 100 × 5 mm;
3-plasticine; 4-a static water balance;
5-plasticine removed from the concrete surface.
Detailed Description
Referring to fig. 1-3, a method for detecting roughness of a joint surface of a concrete prefabricated part includes the following steps:
1) before the test, removing impurities on the surface 1 of the tested member, and then selecting a proper area; coating a layer of demoulding oil on the selected area, and fixing the stainless steel square frame 2 in the area;
2) filling the stainless steel frame 2 with plasticine 3 until the surface of the stainless steel frame 2 is flush with the surface of the stainless steel frame 2, extruding by hands in the process to ensure that the concave-convex parts of the surface 1 of the component are filled with the plasticine, and removing the surplus plasticine by using a spatula;
3) removing the stainless steel frame 2, taking down the plasticine 3 attached to the surface of the member, and if part of the plasticine 3 is adhered to the hole, hooking the plasticine out by using a steel wire;
4) the plasticine 5 taken from the concrete surface is kneaded into a whole and weighed to its weight m in the air
1To an accuracy of 0.01g, the plasticine is then placed in a basket and together in distilled water, the mass m of the plasticine in the water is weighed with a hydrostatic balance 4
2To the nearest 0.01 g; roughness:
in order to improve the accuracy, a plurality of measuring areas can be arranged, and the average value of all the measuring areas is taken during calculation;
5) after the test was completed, the region coated with the release oil was washed with ethanol.
The present invention will be described in more detail with reference to specific preferred embodiments, but the present invention is not limited to the following embodiments.
Example 1
Randomly selecting 10 areas on the joint surface of a certain concrete member, coating a layer of demoulding oil on the selected areas, and fixing a stainless steel square frame in the areas; filling the stainless steel square frame with plasticine until the stainless steel square frame is flush with the surface of the square frame, extruding by hands in the process to ensure that the concave-convex parts of the surface of the component are filled with the plasticine, and removing the surplus plasticine by using a spatula; the stainless steel block is removed, the plasticine attached to the surface of the member is removed, and the weight m in the air is weighed by a static water balance 4
1To an accuracy of 0.01g, the plasticine is then placed in a basket and together in distilled water, the mass m of the plasticine in the water is weighed with a hydrostatic balance 4
2To the nearest 0.01 g. The data obtained and the results are shown in table 1 below:
TABLE 1 test of concrete surface roughness (mm) with plasticine
As can be seen from the data in table 1, the surface roughness measured over 10 areas of 100 x 100mm on the concrete surface had a mean value of 4.1, the individual values did not fluctuate much, and the data was relatively uniform.
Example 2
Randomly selecting 10 areas on the joint surface of a certain concrete member, coating a layer of demoulding oil on the selected areas, and fixing a stainless steel square frame in the areas; filling the stainless steel square frame with plasticine until the stainless steel square frame is flush with the surface of the square frame, extruding by hands in the process to ensure that the concave-convex parts of the surface of the component are filled with the plasticine, and removing the surplus plasticine by using a spatula; the stainless steel block is removed, the plasticine attached to the surface of the member is removed, and the weight m in the air is weighed by a static water balance 4
1To an accuracy of 0.01g, the plasticine is then placed in a basket and together in distilled water, standing still for a dayFlat 4 refers to the mass m of plasticine in water
2To the nearest 0.01 g. The data obtained and the results are shown in table 2 below:
TABLE 2 use of plasticine to test concrete surface roughness (mm)
As can be seen from the data in table 2, the surface roughness measured over 10 areas of 100 x 100mm on the concrete surface had a mean value of 5.7, the individual values did not fluctuate much, and the data was relatively uniform. When the method is used for testing the surface roughness of the concrete member, 10 areas can be selected for testing and calculation, and if the single data has larger floating, the testing area can be increased properly.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (3)
1. The method for detecting the roughness of the joint surface of the concrete prefabricated part is characterized by comprising the following steps of:
1) before testing, removing impurities on the surface of a tested member, and then selecting a proper area; coating a layer of demoulding oil on the selected area, and fixing the stainless steel square frame in the area;
2) filling the stainless steel square frame with plasticine until the stainless steel square frame is flush with the surface of the square frame;
3) removing the stainless steel square frame, and removing the plasticine attached to the surface of the component;
4) kneading the plasticine into a whole block, and weighing the plasticine with the weight m in the air
1To an accuracy of 0.01g, the plasticine is then placed in a basket and together in distilled water, the mass m of the plasticine in the water being weighed
2To the nearest 0.01 g; and calculating the roughness; the roughness calculation formula is as follows:
unit mm;
step 5), after the test is finished, cleaning the area coated with the mold oil by using ethanol;
in order to improve the accuracy, a plurality of measuring areas can be arranged, and the average value of all the measuring areas is taken during calculation.
2. The method for detecting the roughness of the joint surface of the concrete precast element according to claim 1, wherein: in the step 2), the components can be extruded by hands in the process, the concave-convex parts on the surfaces of the components are ensured to be filled with the plasticine, and the surplus plasticine is removed by a spatula.
3. The method for detecting the roughness of the joint surface of the concrete precast element according to claim 1, wherein: in the step 3), if part of the plasticine is stuck in the hole, the plasticine can be hooked out by a steel wire.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109387139A (en) * | 2018-12-12 | 2019-02-26 | 武宇生 | Concrete surface roughness detecting method and tester |
| CN109855518B (en) * | 2019-02-15 | 2019-09-03 | 南京市建筑安装工程质量检测中心 | Assembly concrete roughness detecting method |
| CN110398407A (en) * | 2019-07-30 | 2019-11-01 | 龙信建设集团有限公司 | A kind of concrete component faying face roughness detecting method based on reference block |
| CN110864610B (en) * | 2019-11-04 | 2021-08-03 | 杭州都市高速公路有限公司 | Method for testing three-dimensional roughness of reconstructed concrete surface based on 3D scanning |
| CN111174679B (en) * | 2020-03-18 | 2022-05-13 | 广东稳固检测鉴定有限公司 | Assembled concrete roughness detection method |
| CN111551489A (en) * | 2020-04-08 | 2020-08-18 | 国网河南省电力公司电力科学研究院 | Composite insulator bird pecking damage degree quantification method based on filling volume method |
| CN111964635B (en) * | 2020-08-28 | 2023-10-24 | 哈尔滨工业大学 | Method for testing surface roughness of concrete matrix repair |
| CN114739265B (en) * | 2022-04-23 | 2024-01-19 | 河南工程学院 | Measuring device and measuring method for accurately measuring roughness of concrete test piece |
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| CN204007582U (en) * | 2014-07-09 | 2014-12-10 | 同济大学 | A kind of concrete joint surface roughness measuring device |
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| CN104713443A (en) * | 2015-02-09 | 2015-06-17 | 西安航天动力机械厂 | Method for indirectly measuring weld joint assembly unfitness of butt joint |
| CN105333856A (en) * | 2014-08-11 | 2016-02-17 | 广州浪淘砂建材有限公司 | Interface roughness test method in basic interface processing of plastering |
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2017
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Patent Citations (7)
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| EP0497610A2 (en) * | 1991-02-01 | 1992-08-05 | General Electric Company | Quality assurance of surface treatments by analysis of substrate surface line traces |
| JP2001221629A (en) * | 2000-02-08 | 2001-08-17 | Sumitomo Chem Co Ltd | Method for inspecting shape of plastic body |
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Address after: Jianyan building, no.833, Baiyun Avenue North, Guangzhou, Guangdong 510440 Patentee after: Guangzhou Academy of Building Sciences Group Co.,Ltd. Country or region after: China Address before: Jianyan building, no.833, Baiyun Avenue North, Guangzhou, Guangdong 510440 Patentee before: GUANGZHOU INSTITUTE OF BUILDING SCIENCE Co.,Ltd. Country or region before: China |