CN106018761A - Nondestructive detection system and method for quality of building concrete - Google Patents
Nondestructive detection system and method for quality of building concrete Download PDFInfo
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Abstract
The invention relates to a nondestructive detection system and a nondestructive detection method for the quality of building concrete. The system comprises a rebound instrument, a moisture meter and a processor, wherein the rebound instrument and the moisture meter are both electrically connected with the processor; the rebound instrument is used for detecting a rebound value H of the concrete of the building concrete, and sending the rebound value H to the processor; the moisture meter is used for detecting the moisture content S of the building concrete, and sending the moisture content S to the processor; the processor is used for calculating a strength value F of the building concrete according to the rebound value H and the moisture content S, F=a+bH+cS, and a, b and c are all natural numbers. According to the system, the strength value and a carbonization depth value of the concrete are calculated according to the rebound value measured by the rebound instrument and the moisture content measured by the moisture meter, so that high calculation accuracy is achieved, and damage to the concrete is avoided in a detection process.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a nondestructive testing system and a nondestructive testing method for building concrete quality.
Background
At present, the concrete strength in buildings has various measuring methods, such as a rebound method, an ultrasonic method, a core drilling method, a pulling-out method, a pouring-in method and the like, and even an ultrasonic rebound synthesis method, a core drilling rebound synthesis method and the like which are formed by combining the methods are provided. The internationally common method is to use a resiliometer to measure the rebound value and convert the rebound value to obtain the strength value of the detected concrete, the detection process by adopting the method is complex, and the detection result obtained by detection is not high in precision.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a nondestructive testing system and a nondestructive testing method for the quality of building concrete.
The technical scheme for solving the technical problems is as follows: a nondestructive testing system for building concrete quality comprises a resiliometer, a moisture meter and a processor, wherein the resiliometer and the moisture meter are electrically connected with the processor;
the resiliometer is used for detecting a rebound value H of the building concrete and sending the rebound value H to the processor;
the moisture meter is used for detecting the moisture rate S of the building concrete and sending the moisture rate S to the processor;
the processor is used for calculating to obtain a strength value F of the building concrete according to the rebound value H and the water fraction S; wherein F ═ a + bH + cS, and a, b, and c are natural numbers.
The invention has the beneficial effects that: according to the system, the strength value and the carbonization depth value of the concrete are calculated according to the rebound value measured by the resiliometer and the moisture rate measured by the moisture meter, so that the calculation precision is high, and the concrete cannot be damaged in the detection process.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, in the F ═ a + bH + cS, a is less than-36, b is less than 1.4 and less than 1.5, and c is less than 5.3 and less than 5.2.
The beneficial effect of adopting the further scheme is that: the coefficient of the rebound value and the water fraction is reasonably limited, so that the calculation accuracy is higher.
Further, a is-38.216, b is 1.484, and c is 5.225.
Further, the nondestructive testing system also comprises an input device which is electrically connected with the processor and is used for inputting the age Z of the building concrete;
in the F ═ a + bH + cS, a ═ a1+mlgZ，-22＜a1＜-21，1.4＜b＜1.6，2.3＜c＜2.4，0＜m＜0.0008。
The beneficial effect of adopting the further scheme is that: the detection precision of the concrete can be improved by considering the age of the building concrete in nondestructive detection of the quality of the building concrete.
Further, the processor includes:
the concrete strength calculation module is used for receiving the rebound value H and the water fraction S and calculating to obtain a strength value F of the building concrete according to the rebound value H and the water fraction S;
the conversion module is used for calling the strength value F and converting the strength value F and the rebound value H to obtain a carbonized depth value T of the building concrete; wherein,e. d and f are natural numbers.
The beneficial effect of adopting the further scheme is that: through the conversion module, the carbonization depth value of the concrete can be obtained through conversion according to the strength value of the concrete.
Further, the scaling module comprises:
a vertical surface carbonization depth calculation unit for respectively detecting the rebound value H of the concrete vertical surface of the building when the resiliometer and the moisture meter detect1Water content of1Then, the strength value F of the concrete vertical surface of the building is calculated1And depth value T of carbonization1；F1＝a+bH1+cS1，d1＝n1-q1logZ；-16＜n1＜-15，1.7＜q1＜1.8，1.5＜e1＜1.7，-1＜f1＜-0.9；
A horizontal plane carbonization depth calculation unit for respectively detecting the rebound value H of the concrete horizontal plane of the building when the resiliometer and the moisture meter detect2Water content of2Then, the strength value F of the concrete level of the building is calculated2And depth value T of carbonization2；F＝a+bH2+cS2，d2＝n2-q2lgZ；3.35＜n2＜3.4，6.34＜q2＜6.35，1.2＜e2＜1.3，-1.3＜f2＜-1.2。
The beneficial effect of adopting the further scheme is that: the strength of the building concrete can be calculated in all directions by respectively calculating the wall surface carbonization depth and the bed surface carbonization depth.
Further, theAnd d1＝n1-q1lgZ in the letter "n1＝-15.883，q1＝-1.761，e1＝1.635，f1＝-0.996；
The above-mentionedAnd d2＝n2-q2lgZ in the letter "n2＝3.382，q2＝6.348，e2＝1.217，f2＝2.558。
The beneficial effect of adopting the further scheme is that: through reasonable limitation on each parameter, the measurement of the carbonization depth is more accurate.
A nondestructive testing method for building concrete quality is characterized by comprising the following steps:
s1, detecting a rebound value H of the building concrete by using a rebound instrument, and sending the rebound value H to a processor;
s2, detecting the moisture percentage S of the building concrete by adopting a moisture meter and sending the moisture percentage S to a processor;
s3, calculating the strength value F of the building concrete by the processor according to the rebound value H and the water fraction S; wherein F ═ a + bH + cS, and a, b, and c are natural numbers.
The invention has the beneficial effects that: according to the method, the strength value and the carbonization depth value of the concrete are calculated according to the rebound value measured by the resiliometer and the moisture rate measured by the moisture meter, so that the calculation precision is high, and the concrete cannot be damaged in the detection process.
Further, in the F ═ a + bH + cS, a is less than-36, b is less than 1.4 and less than 1.5, and c is less than 5.3 and less than 5.2; or
In the F ═ a + bH + cS, a ═ a1+mlgZ，-22＜a1-21, 1.4 < b < 1.6, 2.3 < c < 2.4, 0 < m < 0.0008, and Z is the age of the concrete of the building.
Further, in step S3, the concrete strength calculation module in the processor receives the springback value H and the water fraction S, and calculates an strength value F of the building concrete according to the springback value H and the water fraction S;
a conversion module in the processor calls the strength value F and converts the strength value F and the rebound value H to obtain a carbonized depth value T of the building concrete; wherein,e. d and f are natural numbers;
when the resiliometer and the moisture meter respectively detect the rebound value H of the concrete vertical surface of the building1Water content of1Then, a vertical surface carbonization depth calculation unit in the conversion module calculates a strength value F of the vertical surface of the concrete of the building1And depth value T of carbonization1；F1＝a+bH1+cS1，d1＝n1-q1lgZ；-16＜n1＜-15，1.7＜q1＜1.8，1.5＜e1＜1.7，-1＜f1< -0.9; by wall is meant perpendicular to the ground
When the resiliometer and the moisture meter respectively detect the rebound value H of the concrete level of the building2Water content of2Then, a horizontal plane carbonization depth calculation unit in the conversion module calculates the strength value F of the concrete horizontal plane of the building2And depth value T of carbonization2；F＝a+bH2+cS2，d2＝n2-q2lgZ；3.35＜n2＜3.4，6.34＜q2＜6.35，1.2＜e2＜1.3，-1.3＜f2< -1.2; horizontal, top, or ground.
The above-mentionedAnd d1＝n1-q1lgZ in the letter "n1＝-15.883，q1＝-1.761，e1＝1.635，f1＝-0.996；
The above-mentionedAnd d2＝n2-q2lgZ in the letter "n2＝3.382，q2＝6.348，e2＝1.217，f2＝2.558。
Drawings
FIG. 1 is a connection block diagram of a system of an embodiment of the present invention;
FIG. 2 is a control flow diagram of a method according to an embodiment of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the system for non-destructive testing of building concrete quality of the present embodiment includes a resiliometer, a moisture meter and a processor, wherein the resiliometer and the moisture meter are electrically connected to the processor;
the resiliometer is used for detecting a rebound value H of the building concrete and sending the rebound value H to the processor;
the moisture meter is used for detecting the moisture rate S of the building concrete and sending the moisture rate S to the processor;
the processor is used for calculating to obtain a strength value F of the building concrete according to the rebound value H and the water fraction S; wherein F ═ a + bH + cS, and a, b, and c are natural numbers.
The strength value F of the concrete in this embodiment has two calculation modes, which are specifically as follows:
one is, in said F ═ a + bH + cS, -40 < a < -36, 1.4 < b < 1.5, 5.2 < c < 5.3. More preferably, a is-38.216, b is 1.484, and c is 5.225. According to the calculation mode, the age of the concrete is not considered, the rebound value of the building concrete is detected only through the rebound tester, and the moisture rate of the building concrete is detected through the moisture meter, so that the strength value of the concrete can be accurately obtained.
The nondestructive testing system also comprises an input device which is electrically connected with the processor and is used for inputting the age Z of the building concrete; in the F ═ a + bH + cS, a ═ a1+mlgZ，-22＜a1-21, 1.4 < b < 1.6, 2.3 < c < 2.4, 0 < m < 0.0008, and Z is the age of the concrete of the building. The age of the concrete needs to be considered in the calculation mode, the age of the concrete can be input into the processor through the input module in the processor in the calculation process, and then the strength of the concrete is calculated according to the calculation mode.
Although the two calculation modes have different coefficient ranges, the calculation result can accurately reflect the strength of the concrete.
As shown in fig. 1, the processor of the present embodiment includes:
the concrete strength calculation module is used for receiving the rebound value H and the water fraction S and calculating to obtain a strength value F of the building concrete according to the rebound value H and the water fraction S;
the conversion module is used for calling the strength value F and converting the strength value F and the rebound value H to obtain a carbonized depth value T of the building concrete; wherein,e. d and f are natural numbers.
As shown in fig. 1, the scaling module of this embodiment includes:
a vertical surface carbonization depth calculation unit for respectively detecting the rebound value H of the concrete vertical surface of the building when the resiliometer and the moisture meter detect1Water content of1Then, the strength value F of the concrete vertical surface of the building is calculated1And depth value T of carbonization1；F1＝a+bH1+cS1，d1＝n1-q1lgZ；-16＜n1＜-15，1.7＜q1＜1.8，1.5＜e1＜1.7，-1＜f1< -0.9; the vertical surface in the vertical surface carbonization depth calculation unit of the embodiment refers to a wall surface or a column body and the like perpendicular to the bottom surface;
a horizontal plane carbonization depth calculation unit for respectively detecting the rebound value H of the concrete horizontal plane of the building when the resiliometer and the moisture meter detect2Water content of2Then, the strength value F of the concrete level of the building is calculated2And depth value T of carbonization2；F＝a+bH2+cS2，d2＝n2-q2lgZ；3.35＜n2＜3.4，6.34＜q2＜6.35，1.2＜e2＜1.3，-1.3＜f2< -1.2. The horizontal plane in the horizontal plane carbonization depth calculation unit of the present embodiment refers to the top surface, the ground surface, or the like of a building parallel to the ground.
The strength of the building concrete can be calculated in all directions by respectively calculating the carbonization depth of the vertical plane and the carbonization depth of the horizontal plane.
The description of the present embodimentAnd d1＝n1-q1lgZ in the letter "n1＝-15.883，q1＝-1.761，e1＝1.635，f1＝-0.996；
The above-mentionedAnd d2＝n2-q2lgZ in the letter "n2＝3.382，q2＝6.348，e2＝1.217，f2＝2.558。
Through reasonable limitation on each parameter, the measurement of the carbonization depth is more accurate.
Example 2
As shown in fig. 2, a method for testing the quality of the concrete of the building by using the nondestructive testing system of embodiment 1 of the present embodiment includes the following steps:
s1, detecting a rebound value H of the building concrete by using a rebound instrument, and sending the rebound value H to a processor;
s2, detecting the moisture percentage S of the building concrete by adopting a moisture meter and sending the moisture percentage S to a processor;
s3, calculating the strength value F of the building concrete by the processor according to the rebound value H and the water fraction S; wherein F ═ a + bH + cS, and a, b, and c are natural numbers.
The strength value F of the concrete in this embodiment has two calculation modes, which are specifically as follows:
one is, in said F ═ a + bH + cS, -40 < a < -36, 1.4 < b < 1.5, 5.2 < c < 5.3. More preferably, a is-38.216, b is 1.484, and c is 5.225. According to the calculation mode, the age of the concrete is not considered, the rebound value of the building concrete is detected only through the rebound tester, and the moisture rate of the building concrete is detected through the moisture meter, so that the strength value of the concrete can be accurately obtained.
In the other case, in the F ═ a + bH + cS, a ═ a1+mlgZ，-22＜a1-21, 1.4 < b < 1.6, 2.3 < c < 2.4, 0 < m < 0.0008, and Z is the age of the concrete of the building. The age of the concrete needs to be considered in the calculation mode, the age of the concrete can be input into the processor through the input module in the processor in the calculation process, and then the strength of the concrete is calculated according to the calculation mode.
Although the two calculation modes have different coefficient ranges, the calculation result can accurately reflect the strength of the concrete.
As shown in fig. 1, in step S3 of this embodiment, the concrete strength calculation module in the processor receives the springback value H and the water fraction S, and calculates a strength value F of the building concrete according to the springback value H and the water fraction S;
a conversion module in the processor calls the strength value F and converts the strength value F and the rebound value H to obtain a carbonized depth value T of the building concrete; wherein,e. d and f are natural numbers;
when the resiliometer and the moisture meter respectively detect the rebound value H of the concrete vertical surface of the building1Water content of1Then, a vertical surface carbonization depth calculation unit in the conversion module calculates a strength value F of the vertical surface of the concrete of the building1And depth value T of carbonization1；F1＝a+bH1+cS1，d1＝n1-q1lgZ；-16＜n1＜-15，1.7＜q1＜1.8，1.5＜e1＜1.7，-1＜f1< -0.9; by wall is meant perpendicular to the ground
When the resiliometer and the moisture meter respectively detect the rebound value H of the concrete level of the building2Water content of2Then, a horizontal plane carbonization depth calculation unit in the conversion module calculates the strength value F of the concrete horizontal plane of the building2And depth value T of carbonization2；F＝a+bH2+cS2，d2＝n2-q2lgZ；3.35＜n2＜3.4，6.34＜q2＜6.35，1.2＜e2＜1.3，-1.3＜f2< -1.2; horizontal, top, or ground.
The above-mentionedAnd d1＝n1-q1lgZ in the letter "n1＝-15.883，q1＝-1.761，e1＝1.635，f1＝-0.996；
The above-mentionedAnd d2＝n2-q2lgZ in the letter "n2＝3.382，q2＝6.348，e2＝1.217，f2＝2.558。
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The nondestructive testing system for the building concrete quality is characterized by comprising a resiliometer, a moisture meter and a processor, wherein the resiliometer and the moisture meter are electrically connected with the processor;
the resiliometer is used for detecting a rebound value H of the building concrete and sending the rebound value H to the processor;
the moisture meter is used for detecting the moisture rate S of the building concrete and sending the moisture rate S to the processor;
the processor is used for calculating to obtain a strength value F of the building concrete according to the rebound value H and the water fraction S; wherein F ═ a + bH + cS, and a, b, and c are natural numbers.
2. The system of claim 1, wherein in the F ═ a + bH + cS, the-40 < a < -36, 1.4 < b < 1.5, and 5.2 < c < 5.3.
3. The system of claim 2, wherein a is-38.216, b is 1.484, and c is 5.225.
4. The system of claim 1, further comprising an input device electrically connected to the processor for inputting the age Z of the building concrete;
in the F ═ a + bH + cS, a ═ a1+mlgZ，-22＜a1＜-21，1.4＜b＜1.6，2.3＜c＜2.4，0＜m＜0.0008。
5. The system of claim 4, wherein the processor comprises:
the concrete strength calculation module is used for receiving the rebound value H and the water fraction S and calculating to obtain a strength value F of the building concrete according to the rebound value H and the water fraction S;
the conversion module is used for calling the strength value F and converting the strength value F and the rebound value H to obtain a carbonized depth value T of the building concrete; wherein,e. d and f are natural numbers.
6. The system of claim 5, wherein the scaling module comprises:
a vertical surface carbonization depth calculation unit for respectively detecting the rebound value H of the concrete vertical surface of the building when the resiliometer and the moisture meter detect1Water content of1Then, the strength value F of the concrete vertical surface of the building is calculated1And depth value T of carbonization1；F1＝a+bH1+cS1，d1＝n1-q1lgZ；-16＜n1＜-15，1.7＜q1＜1.8，1.5＜e1＜1.7，-1＜f1＜-0.9；
A horizontal plane carbonization depth calculation unit for respectively detecting the rebound value H of the concrete horizontal plane of the building when the resiliometer and the moisture meter detect2Water content of2Then, the strength value F of the concrete level of the building is calculated2And depth value T of carbonization2；F＝a+bH2+cS2，d2＝n2-q2lgZ；
3.35＜n2＜3.4，6.34＜q2＜6.35，1.2＜e2＜1.3，-1.3＜f2＜-1.2。
7. The system of claim 6, wherein the system is configured to perform non-destructive testing of the concrete quality of the buildingAnd d1＝n1-q1lgZ in the letter "n1＝-15.883，q1＝-1.761，e1＝1.635，f1＝-0.996；
The above-mentionedAnd d2＝n2-q2lgZ in the letter "n2＝3.382，q2＝6.348，e2＝1.217，f2＝2.558。
8. A nondestructive testing method for building concrete quality is characterized by comprising the following steps:
s1, detecting a rebound value H of the building concrete by using a rebound instrument, and sending the rebound value H to a processor;
s2, detecting the moisture percentage S of the building concrete by adopting a moisture meter and sending the moisture percentage S to a processor;
s3, calculating the strength value F of the building concrete by the processor according to the rebound value H and the water fraction S; wherein F ═ a + bH + cS, and a, b, and c are natural numbers.
9. The method for nondestructive testing of building concrete quality of claim 8 wherein in said F ═ a + bH + cS, -40 < a < -36, 1.4 < b < 1.5, 5.2 < c < 5.3; or
In the F ═ a + bH + cS, a ═ a1+mlgZ，-22＜a1-21, 1.4 < b < 1.6, 2.3 < c < 2.4, 0 < m < 0.0008, and Z is the age of the concrete of the building.
10. The method according to claim 8 or 9, wherein in step S3, the concrete strength calculation module in the processor receives the rebound value H and the water fraction S, and calculates an strength value F of the building concrete according to the rebound value H and the water fraction S;
a conversion module in the processor calls the strength value F and converts the strength value F and the rebound value H to obtain a carbonized depth value T of the building concrete; wherein,e. d and f are natural numbers;
when the resiliometer and the moisture meter respectively detect the rebound value H of the concrete vertical surface of the building1Water content of1Then, a vertical surface carbonization depth calculation unit in the conversion module calculates a strength value F of the vertical surface of the concrete of the building1And depth value T of carbonization1；F1＝a+bH1+cS1，d1＝n1-q1lgZ；-16＜n1＜-15，1.7＜q1＜1.8，1.5＜e1＜1.7，-1＜f1＜-0.9；
When the resiliometer and the moisture meter respectively detect the rebound value H of the concrete level of the building2Water content of2Then, a horizontal plane carbonization depth calculation unit in the conversion module calculates the strength value F of the concrete horizontal plane of the building2And depth value T of carbonization2；F＝a+bH2+cS2，d2＝n2-q2lgZ；3.35＜n2＜3.4，6.34＜q2＜6.35，1.2＜e2＜1.3，-1.3＜f2＜-1.2；
The above-mentionedAnd d1＝n1-q1lgZ in the letter "n1＝-15.883，q1＝-1.761，e1＝1.635，f1＝-0.996；
The above-mentionedAnd d2＝n2-q2lgZ in the letter "n2＝3.382，q2＝6.348，e2＝1.217，f2＝2.558。
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| CN106568647A (en) * | 2016-10-25 | 2017-04-19 | 武汉理工大学 | Nerve network-based concrete strength predication method |
| CN106568647B (en) * | 2016-10-25 | 2019-03-08 | 武汉理工大学 | A kind of Strength Forecast of Concrete method neural network based |
| CN110987693A (en) * | 2019-12-20 | 2020-04-10 | 上海申昆混凝土集团景祥混凝土有限公司 | Method, device and system for detecting concrete strength data based on rebound method |
| WO2022003994A1 (en) * | 2020-06-30 | 2022-01-06 | 株式会社Just.Will | Effective material age estimation device, compressive strength estimation device, and program |
| GB2611661A (en) * | 2020-06-30 | 2023-04-12 | Univ Tokyo | Effective material age estimation device, compressive strength estimation device, and program |
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