CN111174679B - Assembled concrete roughness detection method - Google Patents
Assembled concrete roughness detection method Download PDFInfo
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- CN111174679B CN111174679B CN202010189631.8A CN202010189631A CN111174679B CN 111174679 B CN111174679 B CN 111174679B CN 202010189631 A CN202010189631 A CN 202010189631A CN 111174679 B CN111174679 B CN 111174679B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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Abstract
The assembled concrete roughness detection method comprises the following specific steps: dividing the surface to be detected of the test piece into at least 4 rectangular areas to be detected; arranging a sealing enclosure along the edge of the area to be detected; preparing silica gel and a curing agent; performing vacuum pumping and bubble discharging operation on the prepared mixed solution; pouring the mixed liquid after vacuumizing and discharging bubbles into a region to be detected; forming a reverse mold after the silica gel is solidified, taking down the sealing enclosure, and taking down the reverse mold; cleaning and drying the reverse mold; measuring the height h1 of the reverse die; according to the formula H ═ V/S; calculating to obtain the theoretical height h2 of the reverse mold; estimating the roughness of the surface to be detected according to the percentage of the difference between the actual height h1 and the theoretical height h2 in the theoretical height h 2; according to the invention, the silica gel mold is manufactured, the surface roughness to be detected is estimated according to the difference between the actual height and the measured height of the mold, and the manufactured silica gel mold can be used for measuring for multiple times to obtain data, so that the error is reduced; in addition, the silica gel mold can be stored for a long time.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to an assembly type concrete roughness detection method.
Background
In recent years, the research in the aspect of prefabricated concrete buildings in China is gradually increased, and the prefabricated concrete structure is formed by casting prefabricated components into a whole in situ through concrete, so that a joint surface is generated between the concrete and the prefabricated components. As a structural form which accords with an industrial production mode, the prefabricated concrete structure has the advantages of high construction speed, low labor intensity, less noise pollution and wet operation, easy control of product quality and the like, and becomes the mainstream direction of the development of domestic and foreign building industries. The stress performance of composite members such as a composite floor slab, a composite beam, a composite wall slab and the like in a prefabricated assembly type concrete structure greatly depends on the quality of a joint surface, particularly the shearing resistance and the seismic resistance of the joint surface, so the shearing resistance is often researched aiming at the joint surface, a plurality of factors are involved in the research process to have certain influence on the shearing resistance and the bearing capacity of the joint surface, one important factor is the roughness of the joint surface, the combination surfaces with different roughness have different influences on the shearing resistance, and the roughness of the joint surface is often measured quantitatively in the test process. The prior art has lower measurement accuracy on the roughness of the bonding surface.
In order to solve the problems, the application provides an assembly type concrete roughness detection method.
Disclosure of Invention
Objects of the invention
In order to solve the technical problem of lower measurement accuracy of the roughness of the bonding surface in the prior art, the invention provides an assembly type concrete roughness detection method, which comprises the steps of manufacturing a silica gel mold, estimating the surface roughness to be detected according to the difference between the actual height and the measurement height of the mold, and obtaining data through multiple measurements of the manufactured silica gel mold to reduce errors; in addition, the silica gel mold can be stored for a long time for subsequent inspection.
(II) technical scheme
In order to solve the problems, the invention provides an assembly type concrete roughness detection method, which comprises the following specific steps:
s1, dividing the surface to be detected of the test piece into at least 4 rectangular areas to be detected; and measuring the length and width of the tape detection zone; calculating the area S of the region to be detected through the length and the width;
s2, arranging a sealing enclosure along the edge of the area to be detected;
s3, pressing a key of 50: 1, mixing the silica gel and the curing agent, and fully and uniformly stirring the silica gel and the curing agent;
s4, performing vacuum pumping and bubble removing operation on the prepared mixed solution;
s5, brushing lubricating oil on the bottom of the area to be detected to ensure that the lubricating oil covers the whole area to be detected;
s6, pouring the mixed liquid which is vacuumized and discharged with bubbles into a region to be detected;
s7, forming a reverse mold after the silica gel is solidified, taking down the sealing enclosure, and taking down the reverse mold;
s8, cleaning and drying the reverse mold;
s9, measuring the height h1 of the reverse mold;
s10, according to formula H ═ V/S; calculating to obtain the theoretical height h2 of the reverse mold;
s11, estimating the roughness of the surface to be detected according to the percentage of the difference value between the actual height h1 and the theoretical height h2 in the theoretical height h 2; (h1-h2)/h2 × 100%.
And S12, obtaining the detection results of the multiple areas to be detected, and averaging the detection results to obtain a final result.
Preferably, the area of the selected area to be detected is controlled to be 50-100cm2。
Preferably, the amount of the silica gel is 500-1000 ml.
Preferably, the sealing enclosure in S2 is a transparent baffle.
Preferably, the seams of the sealing enclosure in S2 are sealed using hot melt adhesive.
Preferably, the evacuation bubble operation in S4 is performed for a period of time not longer than ten minutes.
Preferably, the temperature of the water for cleaning the reverse mold in S8 is controlled to be 20-30 ℃.
Preferably, in S9, the air-blowing drying method is used for the reverse mold, and the drying time does not exceed 30 minutes.
Preferably, the measured length, width and height values are in centimeters and are accurate to two decimal places.
The technical scheme of the invention has the following beneficial technical effects: in the invention, at least 4 rectangular areas to be detected are divided on the surface to be detected of a test piece; (as A1, A2, B1, B2); the rectangular region to be detected is divided into two groups, and the areas of the two groups are different; (A1 has the same area as A2; B1 has the same area as B2; A1 has a different area from B1); the rectangular region to be detected is convenient for calculating the area and installing a sealing enclosure; measuring the length and the width of the marked rectangular region to be detected by using a vernier caliper, and calculating the area S of the region to be detected according to the numerical values of the length and the width; the numerical value is in centimeter unit and is accurate to two digits after decimal point; arranging a sealing enclosure along the edge of the area to be detected, wherein the sealing enclosure is a transparent baffle; sealing the seam of the sealing enclosure by using hot melt adhesive; according to the following weight ratio of 50: 1, mixing the silica gel and the curing agent, and fully and uniformly stirring the silica gel and the curing agent; carrying out vacuumizing bubble-discharging operation on the prepared mixed solution, wherein the vacuumizing bubble-discharging operation time is not more than ten minutes; brushing lubricating oil on the bottom of the area to be detected to ensure that the lubricating oil covers the whole area to be detected; pouring 300ml of mixed liquid after vacuumizing and bubble discharging into a region to be detected, ensuring that the mixed liquid completely covers the whole region to be detected, forming a reverse mold after the silica gel is solidified, blowing the hot melt adhesive of the sealing enclosure by using an electric hair drier, taking down the sealing enclosure after the hot melt adhesive is molten, and taking down the reverse mold; cleaning and drying the reverse mold, and controlling the water temperature for cleaning the reverse mold to be 20-30 ℃; adopting a blowing drying mode for the reverse mold, wherein the drying time is not more than 30 minutes; measuring the height h1 of the reverse die; according to the formula H ═ V/S; calculating to obtain the theoretical height h2 of the reverse mold; estimating the roughness of the surface to be detected according to the percentage of the difference between the actual height h1 and the theoretical height h2 in the theoretical height h 2; (h1-h2)/h2 × 100%; obtaining detection results of a plurality of areas to be detected, and averaging the detection results to obtain a final result; according to the invention, the surface roughness to be detected is estimated according to the difference between the actual height and the measured height of the mold by manufacturing the silica gel mold, and the manufactured silica gel mold can be used for measuring for multiple times to obtain data, so that the error is reduced; in addition, the silica gel mold can be stored for a long time for subsequent inspection.
Drawings
Fig. 1 is a schematic structural diagram of the fabricated concrete roughness measurement method according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the method for detecting the roughness of the fabricated concrete provided by the invention comprises the following specific steps:
s1, dividing the surface to be detected of the test piece into at least 4 rectangular areas to be detected; and measuring the length and width of the tape detection zone; calculating the area S of the region to be detected through the length and the width;
s2, arranging a sealing enclosure along the edge of the area to be detected;
s3, pressing a key of 50: 1, mixing the silica gel and the curing agent, and fully and uniformly stirring the silica gel and the curing agent;
s4, performing vacuum pumping and bubble removing operation on the prepared mixed solution;
s5, brushing lubricating oil on the bottom of the area to be detected to ensure that the lubricating oil covers the whole area to be detected;
s6, pouring the mixed liquid which is vacuumized and discharged with bubbles into a region to be detected;
s7, forming a reverse mold after the silica gel is solidified, taking down the sealing enclosure, and taking down the reverse mold;
s8, cleaning and drying the reverse mold;
s9, measuring the height h1 of the reverse mold;
s10, according to formula H ═ V/S; calculating to obtain the theoretical height h2 of the reverse mold;
s11, estimating the roughness of the surface to be detected according to the percentage of the difference value between the actual height h1 and the theoretical height h2 in the theoretical height h 2; (h1-h2)/h2 × 100%.
And S12, obtaining the detection results of the multiple areas to be detected, and averaging the detection results to obtain a final result.
In the invention, at least 4 rectangular areas to be detected are divided on the surface to be detected of a test piece; (as A1, A2, B1, B2); the rectangular region to be detected is divided into two groups, and the areas of the two groups are different; (A1 has the same area as A2; B1 has the same area as B2; A1 has a different area from B1); the rectangular region to be detected is convenient for calculating the area and installing a sealing enclosure; measuring the length and the width of the marked rectangular region to be detected by using a vernier caliper, and calculating the area S of the region to be detected according to the numerical values of the length and the width; the numerical value is in centimeter unit and is accurate to two digits after decimal point; arranging a sealing enclosure along the edge of the area to be detected, wherein the sealing enclosure is a transparent baffle; sealing the seam of the sealing enclosure by using hot melt adhesive; according to the following weight ratio of 50: 1, mixing silica gel and a curing agent according to the proportion, and fully and uniformly stirring the silica gel and the curing agent; carrying out vacuumizing bubble-discharging operation on the prepared mixed solution, wherein the vacuumizing bubble-discharging operation time is not more than ten minutes; brushing lubricating oil on the bottom of the area to be detected to ensure that the lubricating oil covers the whole area to be detected; pouring 300ml of mixed liquid after vacuumizing and bubble discharging into a region to be detected, ensuring that the mixed liquid completely covers the whole region to be detected, forming a reverse mold after the silica gel is solidified, blowing the hot melt adhesive of the sealing enclosure by using an electric hair drier, taking down the sealing enclosure after the hot melt adhesive is molten, and taking down the reverse mold; cleaning and drying the reverse mold, and controlling the water temperature for cleaning the reverse mold to be 20-30 ℃; adopting a blowing drying mode for the reverse mold, wherein the drying time is not more than 30 minutes; measuring the height h1 of the reverse die; according to the formula H ═ V/S; calculating to obtain the theoretical height h2 of the reverse mold; estimating the roughness of the surface to be detected according to the percentage of the difference between the actual height h1 and the theoretical height h2 in the theoretical height h 2; (h1-h2)/h2 × 100%; and obtaining the detection results of a plurality of areas to be detected, and averaging the detection results to obtain a final result.
In an alternative embodiment, the area of the selected area to be detected is controlled to be 50-100cm2。
In an alternative embodiment, the amount of silica gel used is 500-1000 ml.
In an alternative embodiment, the sealing enclosure in S2 is a transparent baffle.
It should be noted that the transparent baffle is convenient for observing the pouring and solidification states of the inner silica gel.
In an alternative embodiment, the seams of the sealing enclosure in S2 are sealed using hot melt adhesive.
The hot melt adhesive is heated and melted, so that the hot melt adhesive is convenient to remove, dismantle and seal the enclosure;
in an alternative embodiment, the evacuation bubble operation of S4 is performed for no more than ten minutes.
It should be noted that, if it exceeds ten minutes, the silica gel is easily solidified and cannot be used, resulting in waste of silica gel.
In an alternative embodiment, the temperature of the water for cleaning the reverse mold in S8 is controlled to be 20-30 degrees celsius.
It should be noted that the water temperature is controlled at 20-30 ℃, which can reduce the error caused by the expansion and contraction caused by too high or too low temperature, and influence the final measurement result.
In an alternative embodiment, the blow drying is performed on the reverse mold in S9, and the drying time does not exceed 30 minutes.
In an alternative embodiment, the measured length, width, and height values are in centimeters and are accurate to two decimal places.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. The assembled concrete roughness detection method is characterized by comprising the following specific steps of:
s1, dividing the surface to be detected of the test piece into at least 4 rectangular areas to be detected; and measuring the length and width of the region to be detected; calculating the area S of the region to be detected through the length and the width;
s2, arranging a sealing enclosure along the edge of the area to be detected;
s3, pressing a key of 50: 1, mixing the silica gel and the curing agent, and fully and uniformly stirring the silica gel and the curing agent;
s4, performing vacuum pumping and bubble removing operation on the prepared mixed solution;
s5, brushing lubricating oil on the bottom of the area to be detected to ensure that the lubricating oil covers the whole area to be detected;
s6, pouring the mixed liquid which is vacuumized and discharged with bubbles into a region to be detected;
s7, forming a reverse mold after the silica gel is solidified, taking down the sealing enclosure, and taking down the reverse mold;
s8, cleaning and drying the reverse mold;
s9, measuring the height h1 of the reverse mold;
s10, according to formula H ═ V/S; calculating to obtain the theoretical height h2 of the reverse mold;
s11, estimating the roughness of the surface to be detected according to the percentage of the difference value between the actual height h1 and the theoretical height h2 in the theoretical height h 2; (h1-h2)/h2 × 100%;
and S12, obtaining the detection results of the multiple areas to be detected, and averaging the detection results to obtain a final result.
2. The fabricated concrete roughness detection method according to claim 1, wherein the area of the selected area to be detected is controlled to be 50-100cm2。
3. The fabricated concrete roughness measurement method as claimed in claim 1, wherein the amount of silica gel is 500-1000 ml.
4. The fabricated concrete roughness test method of claim 1, wherein the sealing enclosure in S2 is a transparent baffle.
5. The fabricated concrete roughness test method of claim 1, wherein the seam of the sealing enclosure in S2 is sealed by using hot melt adhesive.
6. The fabricated concrete roughness test method of claim 1, wherein the operation time of vacuumizing and bubble-removing in S4 is not more than ten minutes.
7. The fabricated concrete roughness detecting method according to claim 1, wherein the temperature of water for cleaning the reverse mold in S8 is controlled to be 20-30 ℃.
8. The fabricated concrete roughness detection method of claim 1, wherein in the step S9, the air blowing drying method is adopted for the reverse mold, and the drying time is not more than 30 minutes.
9. The fabricated concrete roughness measurement method of claim 1, wherein the measured length, width and height values are in centimeters and are accurate to two decimal places.
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| CN202010189631.8A CN111174679B (en) | 2020-03-18 | 2020-03-18 | Assembled concrete roughness detection method |
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| CN111174679B true CN111174679B (en) | 2022-05-13 |
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| US6775004B1 (en) * | 2002-10-08 | 2004-08-10 | John B. Putman | Measuring surface roughness to calculate filler dispersion in a polymer sample |
| CN106018233A (en) * | 2016-05-18 | 2016-10-12 | 河海大学 | Device for acquiring void structure of large-void asphalt mixture and method |
| CN106225677A (en) * | 2016-09-26 | 2016-12-14 | 广西科技大学 | Automobile engine cylinder head combustion chamber volume measuring method |
| CN106989696A (en) * | 2017-04-01 | 2017-07-28 | 东台磊达钢帘线有限公司 | A kind of wire drawing die work cone angle detection method |
| CN107621250A (en) * | 2017-11-06 | 2018-01-23 | 广州市建筑科学研究院有限公司 | A kind of roughness detecting method of concrete prefabricated element faying face |
| CN207763684U (en) * | 2017-12-19 | 2018-08-24 | 中国地质大学（北京） | A kind of crack roughness modeling mechanism |
| CN110779433A (en) * | 2019-11-27 | 2020-02-11 | 长安大学 | Concrete chiseling surface roughness measuring device and measuring method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2020
- 2020-03-18 CN CN202010189631.8A patent/CN111174679B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6775004B1 (en) * | 2002-10-08 | 2004-08-10 | John B. Putman | Measuring surface roughness to calculate filler dispersion in a polymer sample |
| CN106018233A (en) * | 2016-05-18 | 2016-10-12 | 河海大学 | Device for acquiring void structure of large-void asphalt mixture and method |
| CN106225677A (en) * | 2016-09-26 | 2016-12-14 | 广西科技大学 | Automobile engine cylinder head combustion chamber volume measuring method |
| CN106989696A (en) * | 2017-04-01 | 2017-07-28 | 东台磊达钢帘线有限公司 | A kind of wire drawing die work cone angle detection method |
| CN107621250A (en) * | 2017-11-06 | 2018-01-23 | 广州市建筑科学研究院有限公司 | A kind of roughness detecting method of concrete prefabricated element faying face |
| CN207763684U (en) * | 2017-12-19 | 2018-08-24 | 中国地质大学（北京） | A kind of crack roughness modeling mechanism |
| CN110779433A (en) * | 2019-11-27 | 2020-02-11 | 长安大学 | Concrete chiseling surface roughness measuring device and measuring method |
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