CN109357946B - Self-compacting concrete hydration test system - Google Patents
Self-compacting concrete hydration test system Download PDFInfo
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- CN109357946B CN109357946B CN201811223174.9A CN201811223174A CN109357946B CN 109357946 B CN109357946 B CN 109357946B CN 201811223174 A CN201811223174 A CN 201811223174A CN 109357946 B CN109357946 B CN 109357946B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
The invention discloses a self-compacting concrete hydration test system, which comprises: the loading mechanism applies load to the edge detection piece, the infrared thermal imaging mechanism is used for collecting a surface temperature field of the detection piece, the infrared thermal imaging mechanism is movably arranged on at least one side of the loading mechanism, the height of the infrared thermal imaging mechanism is adjustable along with the size of a sample, and the computer control mechanism is respectively communicated with the loading mechanism and the infrared thermal imaging mechanism. According to the self-compacting concrete hydration test system provided by the embodiment of the invention, the loading mechanism, the infrared thermal imaging mechanism and the computer control mechanism are mutually and closely matched to simulate the real stress state of the self-compacting concrete filled in the gap between the tunnel surrounding rock and the shield segment, and the computer control mechanism monitors the hydration process of the self-compacting concrete under load by analyzing the changed surface temperature field of the detection piece in real time.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a self-compacting concrete hydration test system.
Background
The self-compacting concrete is the concrete which can fill any corner and steel bar gap in the template only by the self weight of the concrete without applying any vibration in the pouring process. In the shield process of the tunnel, the excellent flowing property of the self-compacting concrete is utilized to fill the gap between the surrounding rock and the shield segment, the surrounding rock and the shield segment form a high-strength complex through cement hydration reaction and are gradually condensed, and the ground surface subsidence is effectively controlled. The hydration reaction of the self-compacting concrete directly determines the mechanical property of the self-compacting concrete, monitors the hydration process of the self-compacting concrete under different pressure effects, and has important significance for selecting the self-compacting concrete meeting the engineering requirements.
The strength characteristics of self-compacting concrete in different curing ages are mainly determined by adopting a uniaxial compression test in the self-compacting concrete in the related technology, the mechanical property of the self-compacting concrete under the common curing condition is only indirectly reflected by the testing method according to the compressive strength, the whole process of the hydration reaction of the self-compacting concrete in a real stress state cannot be continuously monitored in real time, and the number of required samples is large.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the self-compacting concrete hydration test system can restore the real stress state of the self-compacting concrete, and is beneficial to accurately mastering the hydration reaction rule of the self-compacting concrete.
The self-compacting concrete hydration test system according to the embodiment of the invention comprises: loading mechanism, infrared thermal imaging mechanism and computer control mechanism, loading mechanism is used for near applying longitudinal load or applying vertical and horizontal two-way load along the test piece, infrared thermal imaging mechanism is used for gathering test piece surface temperature field, the movably establishment of infrared thermal imaging mechanism loading mechanism's one side at least, just infrared thermal imaging mechanism's height is along with the size of test piece is adjustable, computer control mechanism respectively with loading mechanism with infrared thermal imaging mechanism communication.
According to the self-compacting concrete hydration test system provided by the embodiment of the invention, the loading mechanism, the infrared thermal imaging mechanism and the computer control mechanism are mutually and closely matched so as to achieve the purpose of accurately, efficiently and continuously monitoring the hydration process of the bidirectional loading detection piece, the loading mechanism simulates the real stress state of the self-compacting concrete filled in the gap between the tunnel surrounding rock and the shield segment, the infrared thermal imager transmits the surface temperature field of the sample to the computer control mechanism, and the computer control mechanism monitors the hydration process of the self-compacting concrete through analyzing the changed infrared thermal image in real time.
According to one embodiment of the invention, the self-compacting concrete hydration test system comprises a loading mechanism and a self-compacting concrete hydration test system, wherein the loading mechanism comprises: the bearing chassis is used for bearing the detection piece, the bearing chassis is arranged on the support frame, the transverse loader is arranged on the support frame and located on one transverse side of the detection piece and used for applying transverse load to the detection piece, and the longitudinal loader is arranged on the support frame and located on the upper side of the detection piece and used for applying longitudinal load to the detection piece. The mutual matching of the transverse loader and the longitudinal loader is utilized to simulate the real stress state of the detection piece, and the device is simple in structure and easy to regulate and control.
Optionally, the support frame comprises: base, first supporting beam and second supporting beam and carrier bar, first supporting beam with the lower extreme of second supporting beam respectively with the base is connected, first supporting beam with the upper end of second supporting beam respectively with the both ends of carrier bar are connected, wherein, it locates to bear the chassis the upper surface of base just is located first supporting beam with between the second supporting beam.
Further, one of the first support beam and the second support beam is provided with the lateral loader and the other is provided with a lateral load sensor for sensing the lateral load, the lateral load sensor being in communication with the computer control mechanism.
According to one embodiment of the invention, a hydraulic support for supporting the transverse loader is provided between the transverse loader and the base.
According to still another embodiment of the present invention, a lateral bearing plate is provided between the lateral load sensor and the detecting member, and one end of the lateral bearing plate comes into contact with the first support beam or the second support beam at a fixed end and the other end comes into contact with the detecting member at a fixed end.
Furthermore, the centroids of the transverse loader, the transverse load sensor and the transverse bearing plate are positioned on the same straight line.
Optionally, a longitudinal loader is disposed on a side of the load beam facing the load chassis, the load chassis and the detecting member are provided with longitudinal load sensors for sensing the longitudinal load, and the longitudinal load sensors are in communication with the computer control mechanism.
According to one embodiment of the invention, a longitudinal bearing plate is arranged between the detection member and the longitudinal load sensor and on the side of the longitudinal loader facing the load-bearing chassis.
According to a further embodiment of the invention the centroids of the longitudinal loader, the bearing plate, the load beam, the load chassis, the longitudinal load sensor and the base are located on the same line.
According to the self-compacting concrete hydration test system provided by the embodiment of the invention, the transverse loader and the longitudinal loader are jacks.
According to one embodiment of the invention, the infrared thermal imaging mechanism comprises: the system comprises a guide rail, a telescopic support and a thermal infrared imager, wherein the guide rail is arranged in front of and/or behind the loading mechanism, the guide rail extends along the front and back directions of the loading mechanism, the telescopic support is movably arranged on the guide rail along the extending direction of the guide rail, the height of the telescopic support is adjustable, the thermal infrared imager is used for collecting the surface temperature field of the detection piece, and the thermal infrared imager is arranged at the top of the telescopic support and is communicated with the computer control mechanism.
Furthermore, the thermal infrared imagers comprise two thermal infrared imagers which are respectively arranged on two opposite sides of the recording mechanism, and the centers of the lenses of the two thermal infrared imagers and the centroid of the detection piece are positioned on the same straight line.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a self-compacting concrete hydration test system according to an embodiment of the invention.
Reference numerals:
100: a self-compacting concrete hydration test system;
10: a loading mechanism;
11: a support frame; 111: a base; 112: a first support beam; 113: a second support beam;
114: a load beam; 12: a load-bearing chassis; 13: a transverse loader; 131: a lateral load sensor;
132: a hydraulic support; 133: a transverse bearing plate; 14: a longitudinal loader;
141: a longitudinal load sensor; 142: a longitudinal bearing plate;
20; an infrared thermal imaging mechanism; 21: a guide rail; 22: a telescopic bracket; 23: a thermal infrared imager;
30: a computer control mechanism;
40: and (4) a detection piece.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "axial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A self-compacting concrete hydration test system 100 in accordance with an embodiment of the present invention is described below with reference to fig. 1.
As shown in fig. 1, a self-compacting concrete hydration test system 100 according to one embodiment of the present invention includes: a loading mechanism 10, an infrared thermal imaging mechanism 20, and a computer control mechanism 30.
Specifically, as shown in fig. 1, the loading mechanism 10 can apply a force to the detecting member 40 in a longitudinal direction or a longitudinal direction and a transverse direction, and apply a load to the detecting member 40 in the longitudinal direction or the longitudinal direction and the transverse direction of the detecting member 40, wherein the loading mechanism 10 can apply a load to the detecting member 40 in the transverse direction alone, can apply a load to the detecting member 40 in the longitudinal direction alone, and can apply a load to the detecting member 40 in the transverse direction simultaneously, the infrared thermal imaging mechanism 20 is movably disposed on at least one side of the loading mechanism 10 for collecting a surface temperature field of the detecting member 40, that is, the infrared thermal imaging mechanism 20 can be one or multiple, and the height of the infrared thermal imaging mechanism 20 is adjustable, the computer control mechanism 30 is respectively in communication with the loading mechanism 10 and the infrared thermal imaging mechanism 20 for controlling the loading mechanism 10 to apply a load to the detecting member 40 and collecting temperature field information collected, and the collected data is processed to obtain the relation between the stress and the temperature field of the detection piece 40, and the computer control mechanism 30, the loading mechanism 10 and the infrared thermal imaging mechanism 20 can be connected by a data wire or wirelessly.
According to the self-compacting concrete hydration test system 100 provided by the embodiment of the invention, the loading mechanism 10, the infrared thermal imaging mechanism 20 and the computer control mechanism 30 are closely matched with each other so as to achieve the purpose of accurately and efficiently and continuously monitoring the hydration process of the loading detection piece 40, the loading mechanism 10 simulates the real stress state of the self-compacting concrete filled in the gap between the tunnel surrounding rock and the shield segment, the infrared thermal imager 23 transmits the temperature field of the sample to the computer control mechanism 30, and the computer control mechanism 30 monitors the hydration process of the self-compacting concrete through analyzing the changed infrared thermal image in real time.
As shown in fig. 1, according to an embodiment of the present invention, a loading mechanism 10 includes: the loading mechanism comprises a supporting frame 11, a bearing chassis 12, a transverse loader 13 and a longitudinal loader 14, wherein a loading chamber with an opening front and back is defined in the supporting frame 11, a detection piece 40 is arranged in the loading chamber, the bearing chassis 12 is arranged above the supporting frame 11, the bearing chassis 12 is arranged at the bottom of the loading chamber, the detection piece 40 is borne on the bearing chassis 12, the transverse loader 13 and the longitudinal loader 14 are both connected to the loading mechanism 10, the transverse loader 13 is arranged on the side portion of the loading chamber and used for applying transverse load to the detection piece 40, and the longitudinal loader 14 is arranged at the top of the loading chamber and used for applying load to the detection piece 40 from top to bottom along the longitudinal direction.
The structure of the supporting frame 11 is simple, convenience is provided for loading the detection piece 40, transverse and longitudinal loads are applied to the detection piece 40 by the transverse loader 13 and the longitudinal loader 14 respectively, the real stress state of the detection piece 40 can be simulated, a theoretical basis is provided for site construction, and the structure is simple and easy to control.
As shown in fig. 1, according to an embodiment of the present invention, the support frame 11 includes: the base 111, the first supporting beam 112, the second supporting beam 113 and the bearing beam 114 are sequentially connected in an end-to-end manner to form a rectangular frame-shaped structure, and a loading chamber is formed in the rectangular frame-shaped structure, specifically, the base 111 and the bearing beam 114 are arranged along the horizontal direction, the first supporting beam 112 and the second supporting beam 113 are arranged in parallel, the lower ends of the first supporting beam 112 and the second supporting beam 113 are connected with the base 111 respectively, the upper ends of the first supporting beam 112 and the second supporting beam 113 are connected with the two ends of the bearing beam 114 respectively, wherein the bearing chassis 12 is arranged on the upper surface of the base 111 and is located between the first supporting beam 112 and the second supporting beam 113.
Therefore, the supporting frame 11 with the structure is simple in structure, and the infrared thermal imaging mechanism 20 is not influenced to collect the temperature field of the detection piece 40.
As shown in fig. 1, according to an embodiment of the present invention, one of the first support beam 112 and the second support beam 113 is provided with a lateral loader 13, and the other is provided with a lateral load sensor 131 for sensing a lateral load, for example, the lateral loader 13 may be provided on a side wall surface of the first support beam 112, and the lateral load sensor 131 is provided on a side wall surface of the second support beam 113; the transverse loader 13 can also be arranged on the side wall surface of the second support beam 113, the transverse load sensor 131 is arranged on the side wall surface of the first support beam 112, and the transverse loader 13 and the transverse load sensor 131 are respectively arranged on the first support beam 112 and the second support beam 113, so that not only is a mounting bracket provided for the transverse loader 13 and the transverse load sensor 131, but also a support can be provided for the transverse loader 13 and the transverse load sensor 131, the loading mechanism 10 is ensured to be stable and can normally work, and the transverse loader 13 and the transverse load sensor 131 are prevented from moving or separating due to overlarge stress.
Wherein, the transverse loader 13 and the transverse load sensor 131 are located at the same height, and the transverse load sensor 131 is in communication with the computer control mechanism 30, so that the stress information of the detecting element 40 collected by the transverse load sensor 131 is transmitted to the computer control mechanism 30, and the hydration property of the detecting element 40 is obtained by combining the temperature field of the detecting element 40 collected by the infrared thermal imaging mechanism 20.
Further, as shown in fig. 1, a hydraulic bracket 132 for supporting the transverse loader 13 is provided between the transverse loader 13 and the base 111, the hydraulic bracket 132 extends in the vertical direction, and the height of the transverse loader 13 is adjusted according to the position of the detecting member 40, so that not only can the transverse loader 13 be prevented from moving in the vertical direction, but also the stability of the transverse loader 13 during loading is improved.
As shown in fig. 1, according to an embodiment of the present invention, a lateral bearing plate 133 is disposed between the lateral load sensor 131 and the detecting member 40, one end of the lateral bearing plate 133 contacts against the first supporting beam 112 or the second supporting beam 113, and the other end of the lateral bearing plate 133 contacts against the detecting member 40, on one hand, the lateral bearing plate 133 provides a supporting function for the detecting member 40, and the lateral bearing plate 133 cooperates with the lateral loader 13 to apply a lateral load to the detecting member 40, and on the other hand, the two ends of the lateral bearing plate 133 respectively contact against the lateral load sensor 131 and the detecting member 40, so as to transfer the lateral load borne by the detecting member 40 to the lateral load sensor 131, thereby providing convenience for collecting the lateral load of the detecting member 40.
As shown in fig. 1, according to an embodiment of the present invention, centroids of the transverse loader 13, the transverse load sensor 131 and the transverse bearing plate 133 are located on a same straight line, the transverse loader 13 and the transverse bearing plate 133 extend along the straight line, and a free end of the transverse loader 13 moves along the straight line, thereby improving structural stability of the self-compacting concrete hydration test system 100 when the detecting member 40 applies a transverse load, preventing damage to the transverse loader 13 and the transverse bearing plate 133 due to deviation of an acting force of the transverse loader 13 and a supporting force of the transverse bearing plate 133, and preventing an influence on a monitoring effect of the detecting member 40 due to stress inclination of the detecting member 40.
As shown in fig. 1, according to an embodiment of the present invention, a longitudinal loader 14 is disposed on a side of the load beam 114 facing the load chassis 12, the longitudinal loader 14 extends downward from a bottom surface of the load beam 114 in a vertical direction, the load chassis 12 is disposed at a bottom of the longitudinal loader 14, the detecting member 40 is disposed between the longitudinal loader 14 and the load chassis 12, a longitudinal load sensor is disposed between the detecting member 40 and the load chassis 12, the longitudinal load sensor 141 is used for sensing a longitudinal load of the detecting member 40, and the longitudinal load sensor 141 is in communication with the computer control mechanism 30 to transmit the longitudinal load of the detecting member 40 to the computer control mechanism 30.
As shown in fig. 1, according to an embodiment of the present invention, at least one of the sides of the longitudinal loader 14 facing the loading chassis 12 and between the detecting member 40 and the longitudinal load sensor 141 is provided with a longitudinal bearing plate 142, specifically, the upper end face and the lower end face of the detecting member 40 are respectively connected to the lower end of the longitudinal loader 14 and the upper end of the longitudinal load sensor 141, and at least one of the upper end face and the lower end face of the detecting member 40 is provided with the longitudinal bearing plate 142, for example, one longitudinal bearing plate 142 may be provided between the detecting member 40 and the longitudinal load sensor 141, one longitudinal bearing plate 142 may be provided on the side of the longitudinal loader 14 facing the detecting member 40, one longitudinal bearing plate 142 may be provided on each of the upper end face and the lower end face of the detecting member 40, and the longitudinal bearing plate 142 on the upper end face of the detecting member 40 is connected to the.
Through set up vertical bearing plate 142 in the upper and lower terminal surface of detection piece 40, not only can prevent that vertical loader 14 direct contact detection piece 40 from causing the damage of detection piece 40, can also guarantee that detection piece 40 atress is balanced, promoted the accuracy of detection piece 40 pressure-bearing data.
As shown in fig. 1, furthermore, centroids of the longitudinal loader 14, the longitudinal bearing plate 142, the bearing beam 114, the bearing chassis 12, the longitudinal load sensor 141 and the base 111 are located on a same straight line, and the longitudinal loader 14 and the bearing chassis 12 both extend along the straight line, along which a free end of the longitudinal loader 14 moves, thereby improving structural stability of the self-compacting concrete hydration test system 100 when the detecting member 40 applies a lateral load, preventing damage to the longitudinal loader 14 and the longitudinal bearing plate 142 due to deviation of an acting force of the longitudinal loader 14 and a supporting force of the longitudinal bearing plate 142, preventing influence on a monitoring effect of the detecting member 40 due to stress inclination of the detecting member 40, and improving accuracy of data.
As shown in fig. 1, the transverse loader 13 and the longitudinal loader 14 are both jacks, which are simple in structure, easy to control the loading and unloading processes, and low in cost.
As shown in fig. 1, according to one embodiment of the present invention, an infrared thermal imaging mechanism 20 includes: the loading device comprises guide rails 21, a telescopic support 22 and a thermal infrared imager 23, wherein the guide rails 21 are arranged in front of and/or behind the loading mechanism 10, specifically, one guide rail 21 or two guide rails 21 can be arranged, if one guide rail 21 is arranged, the guide rail 21 can be arranged in front of the loading mechanism 10 or behind the loading mechanism 10, the guide rail 21 extends along the front-back direction of the loading mechanism 10, the telescopic support 22 is arranged on the guide rail 21 and moves along the extending direction of the guide rail 21, the height of the telescopic support 22 can be adjusted according to the height of a detection piece 40, the thermal infrared imager 23 is arranged at the top of the telescopic support 22 and used for collecting the temperature field of the detection piece 40, and the thermal infrared imager 23 is communicated with the computer control mechanism 30.
On the one hand, can provide convenience for thermal infrared imager 23's slip through setting up guide rail 21, prevent that thermal infrared imager 23 from taking place the slope, can also promote thermal infrared imager 23 data acquisition's accuracy through the distance between adjusting thermal infrared imager 23 and the detection piece 40, on the other hand, through installing thermal infrared imager 23 on height-adjustable's telescopic bracket 22, height through adjusting telescopic bracket 22 ensures that thermal infrared imager 23 is located the same height with detection piece 40, the accuracy of thermal infrared imager 23 data acquisition has further been promoted.
Further, as shown in fig. 1, the thermal infrared imagers 23 include two thermal infrared imagers 23 respectively disposed on two opposite sides of the loading mechanism 10, specifically, the thermal infrared imaging mechanism 20 includes two guide rails 21 disposed on the front and rear sides of the loading mechanism 10, each guide rail 21 is provided with a telescopic bracket 22, the two thermal infrared imagers 23 are respectively mounted on the telescopic brackets 22 on the front and rear sides of the loading mechanism 10, and the lens centers of the two thermal infrared imagers 23 and the centroid of the detecting element 40 are located on the same straight line.
Two thermal infrared imagers 23 simultaneous working not only can monitor the temperature field condition of the different sides of detection piece 40 simultaneously, can also reduce infrared data acquisition's error, ensures the accuracy of data collection, and self-compaction concrete hydration test system 100 can be located independent constant temperature space and work moreover, has avoided outdoor environment and personnel to walk about the influence to sample temperature field, ensures the accuracy of data.
The operation of the self-compacting concrete hydration test system 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the detection member 40 is a self-compacting concrete sample, the detection member 40 is now placed on the bearing chassis 12, then the telescopic bracket 22 is adjusted, the thermal infrared imager 23 is adjusted to a proper position, the hydraulic bracket 132 is adjusted to adjust the transverse loader 13 to a proper position, the computer control mechanism 30 is started, the thermal infrared imager 23 is opened, the transverse loader 13 applies a transverse load to the detection member 40 as required, the longitudinal loader 14 applies a longitudinal load to the detection member 40, the surface temperature field of the detection member 40 acquired by the thermal infrared imager 23 is transmitted to the computer control mechanism 30, and the computer control mechanism 30 analyzes the hydration process of the self-compacting concrete under the loading condition according to the change of the surface temperature field.
The experimental operating steps are as follows:
s1, checking the operation condition of each component before the experiment begins, and ensuring that the self-compacting concrete hydration test system 100 can work normally;
s2, placing the demolded self-compacting concrete sample on the carrying chassis 12, and adjusting the hydraulic support 132 to enable the loading end of the transverse loader 13 to be positioned right side of the self-compacting concrete sample;
s3, adjusting the telescopic support 22 to enable the thermal infrared imager 23 to be in an ideal position, and starting the thermal infrared imager 23;
and S4, according to the test requirements, the transverse loader 13 and the longitudinal loader 14 start to apply loads, the thermal infrared imager 23 starts to collect the temperature field of the surface of the self-compacting concrete sample, and the transverse load data, the axial load data and the sample surface temperature field data are transmitted to the computer control mechanism 30 in real time through data lines.
S5, after the hydration monitoring process of the self-compacting concrete sample is completed, the transverse loader 13 starts to unload, after the unloading is completed, the longitudinal loader 14 starts to load the self-compacting concrete sample to be damaged, and the strength of the self-compacting concrete sample is recorded.
And S6, after the test is finished, storing the monitoring data, closing the transverse loader 13, the longitudinal loader 14 and the thermal infrared imager 23 in sequence, and cleaning the bearing chassis 12.
Other configurations and operations of self-compacting concrete hydration test system 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A self-compacting concrete hydration test system, comprising:
the loading mechanism is used for applying longitudinal load or longitudinal and transverse bidirectional loads to the detection piece;
the infrared thermal imaging mechanism is used for collecting a surface temperature field of the detection piece in a hydration process, the infrared thermal imaging mechanism is movably arranged on at least one side of the loading mechanism, and the height of the infrared thermal imaging mechanism is adjustable along with the size of the detection piece; the infrared thermal imaging mechanism includes: the guide rail is arranged in front of and/or behind the loading mechanism and extends along the front-back direction of the loading mechanism; the telescopic bracket is movably arranged on the guide rail along the extending direction of the guide rail, and the height of the telescopic bracket is adjustable; the thermal infrared imager is used for collecting the surface temperature field of the detection piece, is arranged at the top of the telescopic bracket and is communicated with the computer control mechanism; the thermal infrared imager transmits the surface temperature field of the sample to the computer control mechanism, and the computer control mechanism monitors the hydration process of the detection piece through analyzing the changed thermal infrared image in real time;
and the computer control mechanism is respectively communicated with the loading mechanism and the infrared thermal imaging mechanism.
2. The self-compacting concrete hydration test system of claim 1, wherein the loading mechanism comprises:
a support frame;
the bearing chassis is used for bearing the detection piece and is arranged on the supporting frame;
the transverse loader is arranged on the supporting frame and positioned on one transverse side of the detection piece and used for applying transverse load to the detection piece;
the longitudinal loader is arranged on the supporting frame and positioned at the upper part of the detection piece and is used for applying longitudinal load to the detection piece.
3. The self-compacting concrete hydration test system of claim 2, wherein the support frame comprises: the device comprises a base, a first supporting beam, a second supporting beam and a bearing beam, wherein the lower ends of the first supporting beam and the second supporting beam are respectively connected with the base, the upper ends of the first supporting beam and the second supporting beam are respectively connected with the two ends of the bearing beam,
the bearing chassis is arranged on the upper surface of the base and is positioned between the first supporting beam and the second supporting beam.
4. The self-compacting concrete hydration test system of claim 3, wherein one of said first support beam and said second support beam is provided with said lateral loader and the other is provided with a lateral load sensor for sensing said lateral load, said lateral load sensor being in communication with said computer control mechanism.
5. The self-compacting concrete hydration test system of claim 4, wherein a hydraulic support for supporting the lateral loader is provided between the lateral loader and the base.
6. The self-compacting concrete hydration test system of claim 4, wherein a lateral bearing plate is arranged between the lateral load sensor and the detection piece, and one end of the lateral bearing plate is in end-to-end contact with the first support beam or the second support beam, and the other end of the lateral bearing plate is in end-to-end contact with the detection piece.
7. The self-compacting concrete hydration test system of claim 6, wherein the centroids of the lateral loader, the lateral load sensor and the lateral bearing plate are located on the same line.
8. The self-compacting concrete hydration test system of claim 3, wherein a longitudinal loader is provided on a side of the load beam facing the load-bearing chassis, the load-bearing chassis and the test piece are provided with longitudinal load sensors for sensing the longitudinal load, the longitudinal load sensors being in communication with the computer control mechanism.
9. The self-compacting concrete hydration test system of claim 8, wherein longitudinal bearing plates are provided between the test piece and the longitudinal load cell and on a side of the longitudinal loader facing the load-bearing chassis.
10. The self-compacting concrete hydration test system of claim 9, wherein centroids of the longitudinal loader, the longitudinal bearing plate, the load beam, the load-bearing chassis, the longitudinal load sensor, and the base are located on a same line.
11. The self-compacting concrete hydration test system according to any one of the claims 2-10, wherein the transverse loader and the longitudinal loader are jacks.
12. The self-compacting concrete hydration test system according to claim 1, wherein the thermal infrared imagers comprise two thermal infrared imagers, the two thermal infrared imagers are respectively arranged on two opposite sides of the loading mechanism, and the centers of lenses of the two thermal infrared imagers and the centroid of the detection piece are located on the same straight line.
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| CN109736778B (en) * | 2019-03-01 | 2023-11-21 | 中国石油大学(北京) | Infrared monitoring device and method for hydration deformation of well bore |
| CN112781984A (en) * | 2020-12-25 | 2021-05-11 | 浙江工业大学 | Multifunctional thermal imaging fatigue test monitor |
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