Device and method for evaluating pouring quality of foam concrete

Abstract

The invention discloses a device for evaluating the pouring quality of foam concrete. The device comprises a fixing assembly, a detection assembly and an ultrasonic detector host, the ultrasonic detector host is electrically connected with the detection assembly; the fixing assembly comprises a double-layer sleeve, the detection assembly is arranged in the double-layer sleeve and comprises an ultrasonic transmitting probe and an ultrasonic receiving probe, the ultrasonic transmitting probe is fixedly arranged on one side of the double-layer sleeve, and the ultrasonic receiving probe is fixedly arranged on the other side of the double-layer sleeve. The detection assembly is adopted for detecting the wave velocities of different positions in each filling layer, then the pouring quality of the foam concrete is analyzed and evaluated, analysis is facilitated, point positions needing to be detected are selected conveniently according to requirements, and the device is high in applicability and convenient to use in filling of the foam concrete.

Description

Technical Field

[0001] The invention relates to the field of pouring quality detection, and in particular to a device and method for evaluating the pouring quality of foam concrete. Background Art

[0002] Foamed concrete refers to a new type of microporous lightweight material that is widely used in roadbed filling. When the foamed concrete is poured, the quality of the pouring is difficult to control because it is easy to delaminate, has poor integrity, and is unevenly stressed. The pouring process is cumbersome, and the pouring quality is difficult to control. Therefore, after the filling is completed, it is necessary to evaluate whether the filling layer meets the engineering pouring quality and judge the filling effect.

[0003] A Chinese invention patent (publication number: CN114859024A) has published a C60 high-strength self-compacting concrete high-throw segregation test device, and a Chinese invention patent (publication number: CN217133169U) has published a large drop free-fall pouring concrete anti-segregation performance detection device. The objects of these two patents are to detect the pouring quality of concrete, which is not suitable for foam concrete. For example, a Chinese invention patent (publication number: CN115015110A) provides a foam concrete stratification detection device and detection method. The principle of this method is to accurately detect whether there are stratification defects and other pouring quality problems of foam lightweight soil based on the acceleration curve. However, for foam concrete filling projects, it is necessary to accurately evaluate the pouring quality of the filling in real time on site, so as to adjust the proportion and process of foam concrete in time and ensure the construction quality.

[0004] Based on the above situation, the present invention proposes a device and method for evaluating the pouring quality of foam concrete to effectively solve the above problems. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention provides a device and method for evaluating the pouring quality of foam concrete.

[0006] The present invention adopts the following technical solution:

[0007] A device for evaluating the pouring quality of foam concrete comprises a fixing component, a detection component and an ultrasonic detector host; the ultrasonic detector host is electrically connected to the detection component; the fixing component comprises a double-layer casing, the detection component is arranged inside the double-layer casing, the detection component comprises an ultrasonic transmitting probe and an ultrasonic receiving probe, the ultrasonic transmitting probe is fixedly arranged on one side of the double-layer casing, and the ultrasonic receiving probe is fixedly arranged on the other side of the double-layer casing.

[0008] Furthermore, the double-layer casing comprises an outer casing and an inner casing, and the top surface and the bottom surface between the outer casing and the inner casing are closed and connected.

[0009] Furthermore, connecting wires of the ultrasonic transmitting probe and the ultrasonic receiving probe are arranged between the outer sleeve and the inner sleeve.

[0010] Furthermore, the ultrasonic transmitting probe and the ultrasonic receiving probe are arranged opposite to each other, and the same pair of ultrasonic transmitting probes and ultrasonic receiving probes are located in the same horizontal plane.

[0011] Furthermore, the left and right sides of the inner sleeve are respectively provided with a plurality of grooves, and the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively installed inside the corresponding grooves.

[0012] Furthermore, a signal line is fixedly installed on the top surface of the double-layer casing, and the signal line is electrically connected to the ultrasonic transmitting probe and the ultrasonic receiving probe.

[0013] Furthermore, a hook is fixed to the top of the double-layered sleeve, and a connecting hole is opened at the center of the upper surface and the center of the lower surface of the double-layered sleeve, and the connecting hole is connected to the inside of the double-layered sleeve.

[0014] Furthermore, a method for using the device for evaluating the quality of foam concrete pouring comprises the following steps:

[0015] Step 1: Place the fixing assembly and the detection assembly vertically on the detection site through a hook, connect the ultrasonic detector host to the ultrasonic transmitting probe and the ultrasonic receiving probe through a signal line, and the detection components are vertically equidistantly distributed, and are divided into 5 layers in total, which are the 1st to 5th layers from top to bottom;

[0016] Step 2: Fill the foam concrete. The foam concrete enters the double-layer casing through the connecting hole until it is completely filled. At this time, the ultrasonic transmitting probe of the i-th layer transmits the ultrasonic signal, and the corresponding ultrasonic receiving probe of the i-th layer receives the ultrasonic signal to obtain the wave velocity of the i-th layer of foam concrete at the initial time t0.

[0017] Step 3: After a fixed time interval t′, record the interval wave velocity v of the i-th layer of foam concrete at time t′ i,t' ;

[0018] Step 4: When the initial setting time t of the foam concrete is reached, the initial setting wave velocity v of the i-th layer of foam concrete at the initial setting time t is recorded again. i,t , stop recording at this time;

[0019] Step 5: Calculate the change amplitude of the wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the fixed interval time t′ respectively. i And the initial setting wave velocity variation amplitude Δ'v of the i-th layer of foam concrete at the initial filling time t0 and the initial setting time t i , the calculation formula is as follows:

[0020]

[0021]

[0022] Step 6: If the interval wave velocity variation amplitude of the i-th layer of foam concrete is Δ'v i and the initial setting wave velocity variation Δv i If the interval wave velocity variation amplitude Δ'v i and the initial setting wave velocity variation Δv i If one or both of them are greater than 10%, the quality of the foamed concrete pouring is considered to be poor;

[0023] Step 7: After data collection is completed, the fixed component and the detection component are pulled out and cleaned through the hook, and the detection position is refilled with foam concrete to complete the detection.

[0024] The present invention provides a device and method for evaluating the pouring quality of foam concrete: by adopting a detection component to detect the wave velocity at different positions in each filling layer, the pouring quality of the foam concrete is analyzed and evaluated, which is convenient for analysis and selection of points to be detected according to needs. The device has strong applicability and is easy to use in the filling of foam concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the main viewing angle of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the present invention from a top view angle;

[0028] Figure 4The structure of the cross section of the present invention is schematically shown Figure 1 ;

[0029] Figure 5 The structure of the cross section of the present invention is schematically shown Figure 2 .

[0030] The serial numbers marked in the figure are as follows: 1. Fixing component; 101. Double-layer sleeve; 1011. Outer sleeve; 1012. Inner sleeve; 102. Hook; 103. Connecting hole; 2. Detection component; 201. Ultrasonic transmitting probe; 202. Ultrasonic receiving probe; 203. Groove; 204. Signal line; 3. Ultrasonic detector host. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] See attached Figure 1-5 A device and method for evaluating the pouring quality of foam concrete, comprising a fixing component 1, a detection component 2 and an ultrasonic detector host 3; the fixing component comprises a double-layer casing 101, the detection component 2 is connected to the inside of the double-layer casing 101, the detection component 2 comprises an ultrasonic transmitting probe 201 and an ultrasonic receiving probe 202, the ultrasonic transmitting probe 201 is fixedly installed on one side of the double-layer casing 101, and correspondingly, the ultrasonic receiving probe 202 is fixedly installed on the other side of the double-layer casing 101.

[0033] When in use, the present technical solution is placed at the construction site to carry out foam concrete filling. During the filling, the foam concrete is filled inside the double-layer casing 101. After the filling is completed, the filled foam concrete is detected by an external ultrasonic detector host 3, and the change range of the detection result is compared to judge the pouring quality. After the detection is completed, when the foam concrete is in the initial setting state, the present technical solution is taken out to complete the detection.

[0034] As a technical optimization solution of the present invention, the ultrasonic transmitting probe 201 and the ultrasonic receiving probe 202 are arranged relative to each other, and the same pair of ultrasonic transmitting probes 201 and ultrasonic receiving probes 202 are in the same horizontal plane. The double-layer sleeve 101 includes an outer sleeve 1011 and an inner sleeve 1012, and the top surface and the bottom surface between the outer sleeve 1011 and the inner sleeve 1012 are sealed and connected. The left and right sides of the inner sleeve 1012 are respectively provided with five grooves 203, and the ultrasonic transmitting probe 201 and the ultrasonic receiving probe 202 are respectively installed inside the grooves 203.

[0035] The connecting wires of the ultrasonic transmitting probe 201 and the ultrasonic receiving probe 202 are arranged between the outer sleeve 1011 and the inner sleeve 1012. A signal line 204 is fixedly installed on the top surface of the double-layer sleeve 101, and the signal line 204 is electrically connected to the ultrasonic transmitting probe 201 and the ultrasonic receiving probe 202. When collecting data, the external ultrasonic detector host 3 is connected to the signal line 204 to collect data, which is convenient for use.

[0036] As a technical optimization solution of the present invention, two hooks 102 are fixedly installed on the top of the double-layer casing 101, and a connecting hole 103 is opened at the center of the upper surface and the center of the lower surface of the double-layer casing 101, and the connecting hole 103 is connected to the inside of the double-layer casing 101. When adjusting, the double-layer casing 101 is placed vertically at the construction site using the hooks 102, which is convenient for fixing the position of the detection component 2 and convenient for use.

[0037] A method for using a device for evaluating the quality of foam concrete pouring. According to the device for evaluating the quality of foam concrete pouring, when using the device, the steps are as follows:

[0038] Step 1: Place the fixing component 1 and the detection component 2 vertically on the detection site through a hook, connect the ultrasonic detector host 3 with the ultrasonic transmitting probe 201 and the ultrasonic receiving probe 202 through the signal line 204, and the detection components 2 are vertically equidistantly distributed, divided into 5 layers in total, from top to bottom, namely the 1st to the 5th layers.

[0039] Step 2: Fill the foamed concrete. The foamed concrete enters the double-layer casing 101 through the connecting hole 103 until it is completely filled. At this time, the ultrasonic transmitting probe 201 of the i-th layer transmits the ultrasonic signal, and the corresponding ultrasonic receiving probe 202 of the i-th layer receives the ultrasonic signal to obtain the initial wave velocity of the i-th layer of foamed concrete at the initial time t0.

[0040] Step 3: After a fixed time interval t′, record the interval wave velocity v of the i-th layer of foam concrete at time t′ i,t' .

[0041] Step 4: When the initial setting time t of the foam concrete is reached, the initial setting wave velocity v of the i-th layer of foam concrete at the initial setting time t is recorded again. i,t , then stop recording.

[0042] Step 5: Calculate the change amplitude of the wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the fixed interval time t′ respectively. iAnd the change amplitude of the initial setting wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the initial setting time t i , the calculation formula is as follows:

[0043]

[0044]

[0045] Step 6: If the interval wave velocity variation amplitude of the i-th layer of foam concrete is Δ'v i and the initial setting wave velocity variation Δv i If the interval wave velocity variation amplitude Δ'v i and the initial setting wave velocity variation Δv i If one or both of them are greater than 10%, it is considered that the pouring quality of the filled foam concrete is poor.

[0046] Step 7: After data collection is completed, the fixing assembly 1 and the detection assembly 2 are pulled out and cleaned through the hook 102, and the detection position is refilled with foam concrete to complete the detection.

[0047] Embodiment 2:

[0048] According to Example 1, when the device of the present invention is actually used, the actual process and data of the measurement are as follows:

[0049] The device is placed in the foundation pit where foam concrete needs to be filled, from top to bottom, in the 1st to 5th layers, with a total of 5 groups of monitoring points.

[0050] Fill the pre-mixed foam concrete, and stop filling when the foam concrete filling height is above the top surface of the device. At this time, collect the initial wave velocity data of the 1st to 5th layers of foam concrete in turn, and the results are as follows:

[0051] Layer 1: Initial time t0, initial wave speed 496m / s;

[0052] Layer 2: Initial state t0, initial wave velocity 494m / s;

[0053] Layer 3: Initial state t0, initial wave velocity 493m / s;

[0054] Layer 4: initial state t0, initial wave velocity 497m / s;

[0055] Layer 5: Initial state t0, initial wave velocity It is 495m / s.

[0056] After that, at a fixed interval of t′=0.5h, the interval wave velocity data of the 1st to 5th layers of foam concrete were collected, a total of 3 groups, and the results are as follows:

[0057] Group 1:

[0058] Layer 1: interval time t′, interval wave speed v 1,t' 489m / s;

[0059] Layer 2: interval time t′, interval wave speed v 2,t' 491m / s;

[0060] Layer 3: Interval time t′, interval wave speed v 3,t' 497m / s;

[0061] Layer 4: interval time t′, interval wave speed v 4,t' 503m / s;

[0062] Layer 5: Interval time t′, interval wave speed v 5,t' It is 502m / s.

[0063] Group 2:

[0064] Layer 1: interval time t′, interval wave speed v 1,t' 477m / s;

[0065] Layer 2: interval time t′, interval wave speed v 2,t' 487m / s;

[0066] Layer 3: Interval time t′, interval wave speed v 3,t' 504m / s;

[0067] Layer 4: interval time t′, interval wave speed v 4,t' 509m / s;

[0068] Layer 5: Interval time t′, interval wave speed v 5,t' It is 512m / s.

[0069] Group 3:

[0070] Layer 1: interval time t′, interval wave speed v 1,t' 473m / s

[0071] Layer 2: Interval time t′, interval wave speed v 2,t' 485m / s

[0072] Layer 3: Interval time t′, interval wave speed v 3,t' 507m / s

[0073] Layer 4: Interval time t′, interval wave speed v4,t' 511m / s

[0074] Layer 5: Interval time t′, interval wave speed v 5,t' 515m / s

[0075] After the initial setting time of the foam concrete reaches t = 2h, the initial setting wave velocity data of the 1st to 5th layers of foam concrete are collected again, and the results are as follows:

[0076] Layer 1: Initial coagulation time t, initial coagulation wave velocity v 1,t 471.3m / s;

[0077] Layer 2: Initial coagulation time t, initial coagulation wave velocity v 2,t 483.9m / s;

[0078] Layer 3: Initial coagulation time t, initial coagulation wave velocity v 3,t 509.3m / s;

[0079] Layer 4: Initial coagulation time t, initial coagulation wave velocity v 4,t 512.3m / s;

[0080] Layer 5: Initial coagulation time t, initial coagulation wave velocity v 5,t It is 516.8m / s.

[0081] Calculate the change amplitude of the wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the fixed interval time t′ respectively. i And the change amplitude of the initial setting wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the initial setting time t i , the results are as follows:

[0082] Interval wave speed variation range:

[0083] Group 1:

[0084] Layer 1: Δ'v1 is 1.4%;

[0085] Layer 2: Δ'v2 is 0.6%;

[0086] Layer 3: Δ'v3 is 0.8%;

[0087] Layer 4: Δ'v4 is 1.2%;

[0088] Layer 5: Δ’v5 is 1.4%.

[0089] Group 2:

[0090] Layer 1: Δ'v1 is 3.8%;

[0091] Layer 2: Δ'v2 is 1.4%;

[0092] Layer 3: Δ'v3 is 2.2%;

[0093] Layer 4: Δ'v4 is 2.4%;

[0094] Layer 5: Δ’v5 is 3.4%.

[0095] Group 3:

[0096] Layer 1: Δ'v1 is 4.6%;

[0097] Layer 2: Δ'v2 is 1.8%;

[0098] Layer 3: Δ'v3 is 2.8%;

[0099] Layer 4: Δ'v4 is 2.8%;

[0100] Layer 5: Δ’v5 is 4.0%.

[0101] Variation of initial condensation wave velocity:

[0102] Layer 1: Δv1 is 5.0%;

[0103] Layer 2: Δv2 is 2.0%;

[0104] Layer 3: Δv3 is 3.2%;

[0105] Layer 4: Δv4 is 3.0%;

[0106] Layer 5: Δv5 is 4.4%.

[0107] To evaluate the pouring quality, the interval wave velocity variation amplitude Δ'v of each layer of foam concrete i and the initial setting wave velocity variation Δv i All of them are within 10%, indicating that the homogeneity and paste stability of the foamed concrete are good, and it can be considered that the pouring quality of the foamed concrete for filling is good.

[0108] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0109] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A device for evaluating the quality of foam concrete pouring, characterized in that: It includes a fixing component, a detection component and an ultrasonic detector host; the ultrasonic detector host is electrically connected to the detection component; the fixing component includes a double-layer casing, the detection component is arranged inside the double-layer casing, the detection component includes an ultrasonic transmitting probe and an ultrasonic receiving probe, the ultrasonic transmitting probe is fixedly provided on one side of the double-layer casing, and the ultrasonic receiving probe is fixedly provided on the other side of the double-layer casing.

2. The device for evaluating the pouring quality of foamed concrete according to claim 1, characterized in that: The double-layer casing comprises an outer casing and an inner casing, and the top surface and the bottom surface between the outer casing and the inner casing are sealed and connected.

3. The device for evaluating the pouring quality of foamed concrete according to claim 2, characterized in that: Connecting wires for the ultrasonic transmitting probe and the ultrasonic receiving probe are arranged between the outer sleeve and the inner sleeve.

4. The device for evaluating the pouring quality of foamed concrete according to claim 1, characterized in that: The ultrasonic transmitting probe and the ultrasonic receiving probe are arranged opposite to each other, and the same pair of ultrasonic transmitting probes and ultrasonic receiving probes are located in the same horizontal plane.

5. The device for evaluating the pouring quality of foamed concrete according to claim 1, characterized in that: The left and right sides of the inner sleeve are respectively provided with a plurality of grooves, and the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively installed inside the corresponding grooves.

6. The device for evaluating the pouring quality of foamed concrete according to claim 1, characterized in that: A signal line is fixedly installed on the top surface of the double-layer casing, and the signal line is electrically connected to the ultrasonic transmitting probe and the ultrasonic receiving probe.

7. The device for evaluating the pouring quality of foamed concrete according to claim 1, characterized in that: A hook is fixed on the top of the double-layer sleeve, and a connecting hole is opened at the center of the upper surface and the center of the lower surface of the double-layer sleeve, and the connecting hole is connected with the inside of the double-layer sleeve.

8. A method for using the device for evaluating the pouring quality of foamed concrete according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: Place the fixing assembly and the detection assembly vertically on the detection site through a hook, connect the ultrasonic detector host to the ultrasonic transmitting probe and the ultrasonic receiving probe through a signal line, and the detection components are vertically equidistantly distributed, and are divided into 5 layers in total, which are the 1st to 5th layers from top to bottom; Step 2: Fill the foam concrete. The foam concrete enters the double-layer casing through the connecting hole until it is completely filled. At this time, the ultrasonic transmitting probe of the i-th layer transmits the ultrasonic signal, and the corresponding ultrasonic receiving probe of the i-th layer receives the ultrasonic signal to obtain the wave velocity v of the i-th layer of foam concrete at the initial time t0. i,t0 ; Step 3: After a fixed time interval t′, record the interval wave velocity v of the i-th layer of foam concrete at time t′ i,t' ; Step 4: When the initial setting time t of the foam concrete is reached, the initial setting wave velocity v of the i-th layer of foam concrete at the initial setting time t is recorded again. i,t , stop recording at this time; Step 5: Calculate the change amplitude of the wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the fixed interval time t′ respectively. i And the change amplitude of the initial setting wave velocity of the i-th layer of foam concrete at the initial filling time t0 and the initial setting time t i , the calculation formula is as follows: Step 6: If the interval wave velocity variation amplitude of the i-th layer of foam concrete is Δ'v i and the initial setting wave velocity variation Δv i If the interval wave velocity variation amplitude Δ'v i and the initial setting wave velocity variation Δv i If one or both of them are greater than 10%, the quality of the foamed concrete pouring is considered to be poor; Step 7: After data collection is completed, the fixed component and the detection component are pulled out and cleaned through the hook, and the detection position is refilled with foam concrete to complete the detection.

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