CN111220796A - Automatic concrete setting time measuring device for simulating field environment and using method thereof - Google Patents
Automatic concrete setting time measuring device for simulating field environment and using method thereof Download PDFInfo
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- CN111220796A CN111220796A CN202010137135.8A CN202010137135A CN111220796A CN 111220796 A CN111220796 A CN 111220796A CN 202010137135 A CN202010137135 A CN 202010137135A CN 111220796 A CN111220796 A CN 111220796A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/12—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring rising or falling speed of the body; by measuring penetration of wedged gauges
Abstract
The invention discloses a concrete setting time automatic measuring device for simulating a field environment and a using method thereof, wherein the device comprises a box body, a sample cylinder, a penetration resistance measuring module, a blowing module, a sunlight simulating module, a temperature and humidity sensor, a heater, a refrigerator, a dehumidifier, a humidifier and a small microcomputer, wherein the small microcomputer is connected with the temperature and humidity sensor to monitor and record the temperature and humidity in the box body in real time; the small microcomputer controls the operation of the blowing module, the sunlight simulation module, the heater, the refrigerator, the dehumidifier and the humidifier; and the small-sized microcomputer is connected with the penetration resistance measuring module to obtain the measuring data fed back by the penetration resistance measuring module and analyze and process the measuring data to obtain a penetration resistance value and a penetration resistance-time curve, thereby obtaining the setting time of the concrete. The device can simulate the construction site environment in the box body, realizes accurately judging the initial and final setting time of the concrete of the construction site in a laboratory, and has low labor intensity.
Description
Technical Field
The invention relates to the technical field of automatic determination of concrete setting time for simulating a field environment, in particular to an automatic determination device for concrete setting time for simulating the field environment and a using method thereof.
Background
The setting time is used as a main index for reflecting the setting performance of the concrete, and has important reference values for the preparation, transportation and application of concrete mixtures. According to the standard of GB/T50080-2016 (test method for the performance of common concrete mixtures), the setting time of the concrete is obtained by measuring and drawing a curve fitting of the penetration resistance-time of mortar screened out of the concrete mixture by adopting a penetration resistance method. The standard defines the time corresponding to the penetration resistance of 3.5MPa and 28.0MPa, respectively, as the initial setting time and the final setting time of the concrete.
The prior automatic measuring device for the coagulation time has a single testing environment and does not consider the influence of different environmental factors through searching published patent documents. In actual engineering, the site environment of the concrete is influenced by factors such as seasons, weather and the like in a complex and variable manner, and the coagulation property of the concrete is influenced to a great extent
At present, the devices for measuring the setting time of concrete mainly comprise a manual detection device and an automatic detection device. Compared with the former, the latter is simpler and more convenient to operate, can obviously reduce the working strength of personnel, and improves the accuracy of experimental data. The existing automatic condensation time measuring device has a single testing environment and does not consider the influence caused by different environmental factors. In actual engineering, the site environment of the concrete is influenced by factors such as seasons, weather and the like in a complex and variable manner, and the setting performance of the concrete is influenced to a great extent.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an automatic measuring device for concrete setting time in a simulated field environment, which can simulate a construction field environment in a box, and can accurately determine the initial and final setting time of the concrete in the construction field in a laboratory, so as to provide a reference for construction quality control, and the labor intensity of personnel is low.
An apparatus for automatically determining a concrete setting time in a simulated field environment according to an embodiment of a first aspect of the present invention includes:
the testing device comprises a box body, wherein a testing platform is arranged at the bottom in the box body;
the sample cylinder is arranged on the test platform and used for containing concrete to be tested;
a penetration resistance measuring module which is arranged in the box body and positioned above the sample cylinder and is used for measuring the penetration resistance of the concrete in the sample cylinder;
the blowing module is arranged in the box body, an air outlet of the blowing module faces the sample cylinder, and the blowing module is used for simulating the wind speed of a site environment;
the sunlight simulation module is arranged in the box body, faces the sample cylinder and is used for simulating the illumination of a field environment;
the temperature and humidity sensor is arranged in the box body and is used for measuring the temperature and humidity in the box body in real time;
the heater is used for heating the environment in the box body;
the refrigerator is used for cooling the environment in the box body;
the dehumidifier is used for reducing the humidity in the box body;
the humidifier is used for increasing the humidity in the box body;
the small microcomputer is connected with the temperature and humidity sensor to monitor and record the temperature and humidity in the box body in real time; the small microcomputer controls the operation of the blowing module, the sunlight simulation module, the heater, the refrigerator, the dehumidifier and the humidifier; and the small microcomputer is connected with the penetration resistance measuring module to obtain the measuring data fed back by the penetration resistance measuring module and analyze and process the measuring data to obtain a penetration resistance value and a penetration resistance-time curve, thereby obtaining the setting time of the concrete.
According to the automatic measuring device for the concrete setting time of the simulated field environment in the embodiment of the first aspect of the invention, when the concrete setting time in the sample cylinder is measured by simulating the field environment in the box body, the wind speed of the field environment is simulated through the blowing module, and the blowing module is controlled through the small microcomputer, so that the regulation of the wind speed in the box body can be realized, and the real setting state of the concrete under the conditions of different wind speeds can be measured more accurately; the sunlight simulation module simulates the illumination of the field environment and controls the operation of the sunlight simulation module through a small microcomputer, so that the adjustment of the illumination intensity in the box body can be realized, and the real condensation state of the concrete under the illumination conditions of different illumination intensities can be more accurately measured; the temperature and humidity in the box body are measured in real time through a temperature and humidity sensor, the temperature of the environment in the box body is raised through a heater or the temperature of the environment in the box body is lowered through a refrigerator, the humidity in the box body is lowered through a dehumidifier or the humidity in the box body is increased through a humidifier, and the operation of the heater, the refrigerator, the dehumidifier and the humidifier is controlled through a small-sized microcomputer. Therefore, the automatic measuring device for the concrete setting time of the simulation site in the embodiment of the first aspect of the invention can simulate the environment of the construction site in a box body more closely, so that the environment in the box body can reflect the real environment of the concrete of the construction site, and the accurate and reliable measurement data fed back by the penetration resistance measuring module is analyzed and processed by a small-sized microcomputer, thereby obtaining the accurate and reliable concrete setting time, being beneficial to accurately judging the setting state of the concrete of the construction site, realizing the accurate judgment of the initial setting time of the concrete of the construction site in a laboratory, being convenient for guiding engineering practice and controlling the construction quality of the concrete. In addition, the automatic concrete setting time measuring device for simulating the field environment according to the embodiment of the first aspect of the invention can automatically measure the setting time of concrete, and the labor intensity of personnel is low.
According to an embodiment of the first aspect of the present invention, the air blowing module, the sunlight simulation module, and the temperature and humidity sensor are all fixed on a side wall of the box body.
According to a further embodiment of the first aspect of the present invention, the air blowing module and the sunlight simulation module are located on one side of the box body, and the temperature and humidity sensor is located on the other side of the box body.
According to an embodiment of the first aspect of the present invention, the penetration resistance measuring module includes a three-axis linkage guide rail assembly and a penetration resistance testing assembly, the three-axis linkage guide rail assembly includes a first guide rail, a second guide rail and a third guide rail, the first guide rail and the second guide rail are arranged in parallel in the box body at intervals, two ends of the third guide rail are respectively supported on the first guide rail and the second guide rail, and the third guide rail is movable back and forth along the length direction of the first guide rail and the second guide rail; the upper end of the penetration resistance testing assembly is connected with the third guide rail and can move back and forth relative to the length direction of the third guide rail, and the lower end of the penetration resistance testing assembly is used for extending into concrete in the sample cylinder for measurement.
According to a further embodiment of the first aspect of the present invention, the arrangement height position of the blower module and the sunlight simulation module is located between the sample cartridge and the triaxial interlocking rail assembly, and the arrangement height position of the sunlight simulation module is higher than the arrangement height position of the blower module.
According to a still further embodiment of the first aspect of the present invention, the arrangement height position of the temperature and humidity sensor is higher than the arrangement height position of the sample cartridge and lower than the arrangement height position of the blower module.
According to a further embodiment of the first aspect of the present invention, the mini-microcomputer comprises a program control module, a data analysis module and a digital display panel; wherein the program control module controls the blowing module, the sunlight simulation module, the penetration resistance measurement module, the heater, the refrigerator, the dehumidifier, and the humidifier; the data analysis module is connected with the penetration resistance testing assembly and is used for analyzing and processing the measurement data acquired by the penetration resistance testing assembly to obtain a penetration resistance value and a penetration resistance-time curve so as to obtain the setting time of the concrete; the digital display panel is used for displaying the processing result of the data analysis module and displaying the temperature and humidity measured by the temperature and humidity sensor.
According to a still further embodiment of the first aspect of the present invention, the system further comprises a data acquisition module; one end of the data acquisition module is connected with the temperature and humidity sensor and the penetration resistance measuring module and is used for acquiring the temperature and humidity in the box body measured by the temperature and humidity sensor and acquiring the measuring data of the penetration resistance testing assembly; the other end of the data acquisition module is connected with the data analysis module of the small microcomputer and used for feeding back the acquired temperature and humidity in the box body and the measured data of the penetration resistance testing assembly to the data analysis module.
According to a still further embodiment of the first aspect of the present invention, the apparatus further comprises a microcomputer control chamber, and the data acquisition module, the mini-microcomputer, the heater, the refrigerator, the dehumidifier, and the humidifier are disposed in the microcomputer control chamber.
According to an embodiment of the first aspect of the present invention, door bodies are disposed on the box body and the microcomputer control chamber, and transparent glass observation windows are disposed on the door body of the box body and the door body of the microcomputer control chamber.
The invention also provides a use method of the automatic concrete setting time measuring device for simulating the field environment.
The use method of the automatic concrete setting time measuring device for simulating the field environment according to the embodiment of the second aspect of the invention comprises the following steps:
after concrete to be tested is placed in the sample cylinder, the sample cylinder is placed at a fixed position of the test platform;
the small microcomputer is turned on, the ambient temperature, humidity and air speed parameters are set, and the heater, the refrigerator, the dehumidifier, the humidifier and the blowing module are started and controlled; setting the illumination intensity, and starting and controlling the sunlight simulation module; setting the position parameters of the sample cylinder, starting and controlling the penetration resistance measuring module to perform a penetration resistance measuring test; recording data of the temperature and humidity sensor, data of a displacement sensor in the penetration resistance measuring module and data of a pressure sensor in the penetration resistance measuring module by the small microcomputer; processing the acquired data by the small microcomputer to obtain the penetration resistance of the concrete under different environmental effects, drawing a penetration resistance-time curve and determining the initial and final setting time of the concrete;
and after the penetration resistance test is finished, the penetration resistance measuring module automatically moves to the original position, the small-sized microcomputer is manually closed, the sample cylinder is taken out, and the test is finished.
The use method of the automatic concrete setting time measuring device for simulating the field environment according to the embodiment of the second aspect of the invention has the following advantages: firstly, simulating the real environment of the concrete in the construction site in the box body through the blowing module, the sunlight simulation module, the temperature and humidity sensor, the heater, the refrigerator, the dehumidifier, the humidifier and the small microcomputer, so that the real environment of the concrete in the construction site can be reflected by the environment in the box body, and the measuring result of the concrete setting time in the sample cylinder can accurately and reliably reflect the setting state of the concrete in the construction site; secondly, the measured data of the penetration resistance measuring module is accurate and reliable, and the accurate and reliable measured data fed back by the penetration resistance measuring module is analyzed and processed by a microcomputer control system, so that the initial and final setting time of the concrete on a construction site can be accurately judged, and reliable guidance is provided for the control of the construction quality of the concrete; thirdly, the setting time of the concrete can be automatically measured, the working strength of personnel is obviously reduced, the possibility of manual operation errors can be reduced, and the accuracy of experimental data is improved; fourthly, the initial and final setting time of the concrete on the construction site can be accurately judged in a laboratory, so that the engineering practice can be conveniently guided, and the construction quality of the concrete can be controlled. 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 an automatic concrete setting time measuring apparatus for simulating an on-site environment according to an embodiment of the first aspect of the present invention.
Fig. 2 is a schematic structural diagram of a penetration resistance measuring module of the automatic concrete setting time measuring apparatus for simulating an on-site environment according to the embodiment of the first aspect of the present invention.
Reference numerals:
concrete setting time automatic measuring device 1000 for simulating field environment
Penetration resistance measuring module 3
Tri-axial linked rail assembly 301 first rail 3011 second rail 3012
Sunlight simulation module 5
Temperature and humidity sensor 6
Refrigerating machine 8
Small-sized microcomputer 11
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.
An automatic concrete setting time measuring apparatus 1000 simulating an on-site environment according to an embodiment of the first aspect of the present invention will be described with reference to fig. 1 to 2.
As shown in fig. 1 to 2, an automatic measuring apparatus 1000 for concrete setting time simulating a site environment according to an embodiment of the first aspect of the present invention includes a housing 1, a sample tube 2, a penetration resistance measuring module 3, an air blowing module 4, a sunlight simulating module 5, a temperature and humidity sensor 6, a heater 7, a refrigerator 8, a dehumidifier 9, a humidifier 10, and a microcomputer 11. A testing platform 101 is arranged at the bottom in the box body 1; the sample cylinder 2 is arranged on the test platform 101 and used for containing concrete to be tested; the penetration resistance measuring module 3 is arranged in the box body 1 and positioned above the sample cylinder 2 and is used for measuring the penetration resistance of concrete in the sample cylinder 2; the blowing module 4 is arranged in the box body 1, and an air outlet of the blowing module 4 faces the sample cylinder 2 and is used for simulating the wind speed of a field environment; the sunlight simulation module 5 is arranged in the box body 1 and faces the sample cylinder 2 and is used for simulating the illumination of the field environment; the temperature and humidity sensor 6 is arranged in the box body 1 and used for measuring the temperature and humidity in the box body 1 in real time; the heater 7 is used for heating the environment in the box body 1; the refrigerator 8 is used for cooling the environment in the box body 1; the dehumidifier 9 is used for reducing the humidity in the box body 1; the humidifier 10 is used for increasing the humidity in the box body 1; the small microcomputer 11 is connected with the temperature and humidity sensor 6 to monitor and record the temperature and humidity of the sample cylinder 2 in real time; the small microcomputer 11 controls the operation of the air blowing module 4, the sunlight simulation module 5, the heater 7, the refrigerator 8, the dehumidifier 9 and the humidifier 10; and the small microcomputer 11 is connected with the penetration resistance measuring module 3 to obtain the measuring data fed back by the penetration resistance measuring module 3 and analyze and process the measuring data to obtain the penetration resistance value and the penetration resistance-time curve, thereby obtaining the setting time of the concrete.
According to the automatic measuring device 1000 for the concrete setting time of the simulated field environment of the embodiment of the first aspect of the invention, when the simulated field environment in the box body 1 measures the concrete setting time in the sample cylinder 2, the wind speed of the field environment is simulated through the blowing module 4, and the blowing module 4 is controlled through the small microcomputer 11, so that the regulation of the wind speed in the box body 1 can be realized, and the real setting state of the concrete under the conditions of different wind speeds can be measured more accurately; the sunlight simulation module 5 simulates the illumination of the field environment and controls the operation of the sunlight simulation module 5 through the small microcomputer 11, so that the illumination intensity in the box body 1 can be adjusted, and the real condensation state of the concrete under the illumination conditions of different illumination intensities can be more accurately measured; the temperature and humidity in the box body 1 are measured in real time through the temperature and humidity sensor 6, the temperature in the box body 1 is raised through the heater 7 or lowered through the refrigerator 8, the temperature in the box body 1 is lowered through the dehumidifier 9, the humidity in the box body 1 is increased through the humidifier 10, and the heater 7, the refrigerator 8, the dehumidifier 9 and the humidifier 10 are controlled through the small microcomputer 11 to operate, so that the temperature and the humidity in the box body 1 can be adjusted, and the real condensation state of concrete under different temperature and humidity conditions can be measured more accurately. Therefore, the automatic measuring device 1000 for the concrete setting time of the simulation site according to the embodiment of the first aspect of the present invention can more closely simulate the environment of the construction site in the box 1, so that the environment in the box 1 can reflect the real environment of the concrete of the construction site, and the accurate and reliable measurement data fed back by the penetration resistance measurement module 3 is analyzed and processed by the small microcomputer 11, thereby obtaining the accurate and reliable setting time of the concrete, facilitating the accurate determination of the setting state of the concrete of the construction site, realizing the accurate determination of the initial and final setting time of the concrete of the construction site in a laboratory, facilitating the guidance of engineering practice, and controlling the construction quality of the concrete. In addition, the automatic concrete setting time measuring device 1000 for simulating the on-site environment according to the embodiment of the first aspect of the present invention can automatically measure the setting time of concrete, and the labor intensity of personnel is low.
According to an embodiment of the first aspect of the present invention, the air blowing module 4, the sunlight simulating module 5 and the temperature and humidity sensor 6 are fixed on the side wall of the box 1. Thus, the structure is reasonable and reliable.
According to a further embodiment of the first aspect of the present invention, the air blowing module 4 and the sunlight simulating module 5 are located on one side of the box 1, and the temperature and humidity sensor 6 is located on the other side of the box 1. Therefore, the interference of the air blowing module 4 and the sunlight simulation module 5 on the temperature and humidity sensor 6 can be avoided, and the measuring result is influenced.
According to one embodiment of the first aspect of the present invention, the penetration resistance measuring module 3 comprises a triaxial linkage rail assembly 301 and a penetration resistance testing assembly 302, the triaxial linkage rail assembly 301 comprises a first rail 3011, a second rail 3012 and a third rail 3013, the first rail 3011 and the second rail 3012 are arranged in parallel in the box 1 at a relative interval, two ends of the third rail 3013 are supported on the first rail 3011 and the second rail 3012 respectively, and the third rail 3013 is movable back and forth along the length direction of the first rail 3011 and the second rail 3012; the upper end of the penetration resistance test module 302 is connected to the third rail 3013 and is movable back and forth in the longitudinal direction of the third rail 3013, and the lower end of the penetration resistance test module 302 is used for extending into the concrete in the sample cylinder 2 to be measured. The penetration resistance testing assembly 302 generally comprises a probe, a pressure sensor and a displacement sensor, when the setting time of the concrete in the sample cylinder 2 is measured in a construction site, the lower end of the penetration resistance testing assembly 302 extends into the concrete in the sample cylinder 2, and the penetration resistance measured by the probe and the position thereof can be collected through the pressure sensor and the displacement sensor.
According to a further embodiment of the first aspect of the present invention, the arrangement height position of the blower module 4 and the sunlight simulating module 5 is located between the sample tube 2 and the triaxial interlocking rail assembly 301, and the arrangement height position of the sunlight simulating module 5 is higher than that of the blower module 4. Therefore, the structure is reasonable, the real environment where the concrete is located in a construction site can be simulated more closely, and the accuracy of the measurement result is ensured.
According to a still further embodiment of the first aspect of the present invention, the arrangement height position of the temperature and humidity sensor 6 is higher than the arrangement height position of the sample cartridge 2 and lower than the arrangement height position of the blower module 4. Therefore, the measurement result of the temperature and humidity sensor 6 is closer to the real temperature and humidity of the concrete in the sample cylinder 2, and the accuracy of the measurement result is ensured.
According to a further embodiment of the first aspect of the present invention, the mini-microcomputer 11 comprises a program control module, a data analysis module and a digital display panel; wherein, the program control module controls the blowing module 4, the sunlight simulation module 5, the penetration resistance measuring module 3, the heater 7, the refrigerator 8, the dehumidifier and the humidifier 10; the data analysis module is connected with the penetration resistance testing assembly 302 and is used for analyzing and processing the measurement data acquired by the penetration resistance testing assembly 302 to obtain a penetration resistance value and a penetration resistance-time curve so as to obtain the setting time of the concrete; the digital display panel displays the processing result of the data analysis module and is used for displaying the temperature and the humidity measured by the temperature and humidity sensor 6. It can be understood that the air blowing module 4, the sunlight simulation module 5, the penetration resistance measuring module 3, the heater 7, the refrigerator 8, the dehumidifier and the humidifier 10 are controlled by the program control module to adjust the air speed, the illumination intensity and the temperature and humidity in the box body 1 so as to simulate the real environment of the concrete in the construction site, so that the environment in the box body 1 can more appropriately reflect the real environment of the concrete in the construction site; the penetration resistance measuring module 3 is controlled through the program control module, namely the three-axis linkage guide rail assembly 301 and the penetration resistance testing assembly 302 are controlled, and the probe penetration position of the penetration resistance testing assembly 302 can be accurately positioned by setting the position parameters of the sample cylinder 2; the data analysis module is connected with the penetration resistance testing assembly 302 and is used for analyzing and processing the measurement data acquired by the penetration resistance testing assembly 302 to obtain a penetration resistance value and a penetration resistance-time curve so as to obtain the setting time of the concrete; the digital display panel is used for displaying the processing result of the analysis module (such as the penetration resistance value, the penetration resistance-time curve, the setting time of concrete and the like) and displaying the temperature and humidity measured by the temperature and humidity sensor 6.
According to a still further embodiment of the first aspect of the present invention, the system further comprises a data acquisition module 12; one end of the data acquisition module 12 is connected with the temperature and humidity sensor 6 and the penetration resistance measurement module 3, and is used for acquiring the temperature and humidity in the box body 1 measured by the temperature and humidity sensor 6 and acquiring measurement data of the penetration resistance measurement component 302; the other end of the data acquisition module 12 is connected with a data analysis module of the microcomputer 11, and is used for feeding back the acquired temperature and humidity in the box body 1 and the measurement data of the penetration resistance testing component 302 to the data analysis module. It can be understood that the temperature and humidity values measured by the temperature and humidity sensor and the pressure sensor data and the displacement sensor data in the penetration resistance measuring module 3 can be conveniently collected by arranging the data collecting module, and the collected data are fed back to the data analyzing module, so that the concrete setting time under different environmental conditions can be conveniently determined,
according to a further embodiment of the first aspect of the present invention, the apparatus further comprises a microcomputer control chamber 13, and the data acquisition module 12, the mini-microcomputer 11, the heater 7, the refrigerator 8, the dehumidifier and the humidifier 10 are disposed in the microcomputer control chamber 13. Thus, the automatic measuring device 1000 for concrete setting time simulating the on-site environment has a compact and reasonable structure, and uses the microcomputer control room 13 to prevent dust and protect the data acquisition module 12, the mini-microcomputer 11, the heater 7, the refrigerator 8, the dehumidifier and the humidifier 10.
According to an embodiment of the first aspect of the present invention, the door bodies are disposed on the box body 1 and the microcomputer control chamber 13, so as to facilitate taking and placing of concrete and maintenance of the interior of the microcomputer control chamber 13, and the transparent glass observation windows are disposed on the door body of the box body 1 and the door body of the microcomputer control chamber 13, so as to facilitate observation of the internal state of the box body 1.
The second aspect of the present invention also provides a method for using the automatic measuring device 1000 for concrete setting time for simulating the field environment.
The method for using the automatic measuring device 1000 for concrete setting time simulating on-site environment according to the embodiment of the second aspect of the invention comprises the following steps:
after concrete to be tested is placed in the sample cylinder 2, the sample cylinder 2 is placed at a fixed position of the test platform 101;
the small microcomputer 11 is turned on, the ambient temperature, humidity and air speed parameters are set, and the heater 7, the refrigerator 8, the dehumidifier 9, the humidifier 10 and the blowing module 4 are started and controlled; setting the illumination intensity, and starting and controlling the sunlight simulation module 5; setting position parameters of the sample cylinder 2, starting and controlling the penetration resistance measuring module 3 to perform a penetration resistance measuring test; recording data of the temperature and humidity sensor 6, data of a displacement sensor in the penetration resistance measuring module 3 and data of a pressure sensor in the penetration resistance measuring module 3 by a small microcomputer 11; processing the acquired data by a small microcomputer 11 to obtain the penetration resistance of the concrete under different environmental effects, drawing a penetration resistance-time curve and determining the initial and final setting time of the concrete;
after the penetration resistance test is finished, the penetration resistance measuring module 3 automatically moves to the original position, the small-sized microcomputer is manually closed, the sample cylinder 2 is taken out, and the test is finished.
The method for using the apparatus 1000 for automatically measuring concrete setting time for simulating a field environment according to the embodiment of the second aspect of the present invention has the following advantages: firstly, the real environment of the concrete in the construction site is simulated in the box body 1 through the air blowing module 4, the sunlight simulation module 5, the temperature and humidity sensor 6, the heater 7, the refrigerator 8, the dehumidifier 9, the humidifier 10 and the small microcomputer 11, so that the real environment of the concrete in the construction site can be reflected by the environment in the box body 1, and the measuring result of the concrete setting time in the sample cylinder 2 can be ensured to accurately and reliably reflect the setting state of the concrete in the construction site; secondly, the measured data of the penetration resistance measuring module 3 is accurate and reliable, and the accurate and reliable measured data fed back by the penetration resistance measuring module 3 is analyzed and processed by a microcomputer control system, so that the initial and final setting time of the concrete on a construction site can be accurately judged, and reliable guidance is provided for the control of the construction quality of the concrete; thirdly, the setting time of the concrete can be automatically measured, the working strength of personnel is obviously reduced, the possibility of manual operation errors can be reduced, and the accuracy of experimental data is improved; fourthly, the initial and final setting time of the concrete on the construction site can be accurately judged in a laboratory, so that the engineering practice can be conveniently guided, and the construction quality of the concrete can be controlled.
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 (11)
1. An automatic measuring device for concrete setting time simulating an on-site environment, comprising:
the testing device comprises a box body, wherein a testing platform is arranged at the bottom in the box body;
the sample cylinder is arranged on the test platform and used for containing concrete to be tested;
a penetration resistance measuring module which is arranged in the box body and positioned above the sample cylinder and is used for measuring the penetration resistance of the concrete in the sample cylinder;
the blowing module is arranged in the box body, an air outlet of the blowing module faces the sample cylinder, and the blowing module is used for simulating the wind speed of a site environment;
the sunlight simulation module is arranged in the box body, faces the sample cylinder and is used for simulating the illumination of a field environment;
the temperature and humidity sensor is arranged in the box body and is used for measuring the temperature and humidity in the box body in real time;
the heater is used for heating the environment in the box body;
the refrigerator is used for cooling the environment in the box body;
the dehumidifier is used for reducing the humidity of the environment in the box body;
the humidifier is used for increasing the humidity of the environment in the box body;
the small microcomputer is connected with the temperature and humidity sensor to monitor and record the temperature and humidity in the box body in real time; the small microcomputer controls the operation of the blowing module, the sunlight simulation module, the heater, the refrigerator, the dehumidifier and the humidifier; and the small microcomputer is connected with the penetration resistance measuring module to obtain the measuring data fed back by the penetration resistance measuring module and analyze and process the measuring data to obtain a penetration resistance value and a penetration resistance-time curve, thereby obtaining the setting time of the concrete.
2. The apparatus of claim 1, wherein the blower module, the sunlight simulation module and the temperature/humidity sensor are fixed to a sidewall of the housing.
3. The apparatus of claim 2, wherein the air blowing module and the sunlight simulating module are located on one side of the box, and the temperature and humidity sensor is located on the other side of the box.
4. The automatic measuring device for concrete setting time simulating on-site environment according to claim 1, wherein the penetration resistance measuring module comprises a three-axis linkage guide rail assembly and a penetration resistance testing assembly, the three-axis linkage guide rail assembly comprises a first guide rail, a second guide rail and a third guide rail, the first guide rail and the second guide rail are oppositely arranged in parallel in the box body at intervals, two ends of the third guide rail are respectively supported on the first guide rail and the second guide rail, and the third guide rail can move back and forth along the length direction of the first guide rail and the second guide rail; the upper end of the penetration resistance testing assembly is connected with the third guide rail and can move back and forth relative to the length direction of the third guide rail, and the lower end of the penetration resistance testing assembly is used for extending into concrete in the sample cylinder for measurement.
5. The apparatus of claim 4, wherein the blower module and the sunlight simulation module are disposed at a height higher than that of the blower module between the sample container and the triaxial interlocking rail assembly.
6. The apparatus for automatically measuring concrete setting time according to claim 5, wherein the temperature/humidity sensor is disposed at a height higher than the height of the sample container and lower than the height of the blower module.
7. The apparatus as claimed in claim 4, wherein the mini-microcomputer comprises a program control module, a data analysis module and a digital display panel; wherein the program control module controls the blowing module, the sunlight simulation module, the penetration resistance measurement module, the heater, the refrigerator, the dehumidifier, and the humidifier; the data analysis module is connected with the penetration resistance testing assembly and is used for analyzing and processing the measurement data acquired by the penetration resistance testing assembly to obtain a penetration resistance value and a penetration resistance-time curve so as to obtain the setting time of the concrete; the digital display panel is used for displaying the processing result of the data analysis module and displaying the temperature and humidity measured by the temperature and humidity sensor.
8. The apparatus for automatically measuring concrete setting time according to claim 7, further comprising a data acquisition module; one end of the data acquisition module is connected with the temperature and humidity sensor and the penetration resistance measuring module and is used for acquiring the temperature and humidity in the box body measured by the temperature and humidity sensor and acquiring the measuring data of the penetration resistance testing assembly; the other end of the data acquisition module is connected with the data analysis module of the small microcomputer and used for feeding back the acquired temperature and humidity in the box body and the measured data of the penetration resistance testing assembly to the data analysis module.
9. The apparatus of claim 8, further comprising a microcomputer control room, wherein the data acquisition module, the mini-microcomputer, the heater, the refrigerator, the dehumidifier, and the humidifier are disposed in the microcomputer control room.
10. The device for automatically measuring the concrete setting time for simulating the field environment according to claim 1, wherein door bodies are arranged on the box body and the microcomputer control chamber, and transparent glass observation windows are arranged on the door bodies of the box body and the door bodies of the microcomputer control chamber.
11. A method of using an apparatus for automatically measuring concrete setting time in a simulated field environment according to any one of claims 1 to 10, comprising the steps of:
after concrete to be tested is placed in the sample cylinder, the sample cylinder is placed at a fixed position of the test platform;
the small microcomputer is turned on, the ambient temperature, humidity and air speed parameters are set, and the heater, the refrigerator, the dehumidifier, the humidifier and the blowing module are started and controlled; setting the illumination intensity, and starting and controlling the sunlight simulation module; setting the position parameters of the sample cylinder, starting and controlling the penetration resistance measuring module to perform a penetration resistance measuring test; recording data of the temperature and humidity sensor, data of a displacement sensor in the penetration resistance measuring module and data of a pressure sensor in the penetration resistance measuring module by the small microcomputer; processing the acquired data by the small microcomputer to obtain the penetration resistance of the concrete under different environmental effects, drawing a penetration resistance-time curve and determining the initial and final setting time of the concrete;
and after the penetration resistance test is finished, the penetration resistance measuring module automatically moves to the original position, the small-sized microcomputer is manually closed, the sample cylinder is taken out, and the test is finished.
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