Testing device for solidified soil dry-wet cycle

Abstract

The utility model belongs to the technical field of soil body tests, and particularly relates to a testing device for dry-wet cycle of solidified soil. Comprising a dry-wet cycle simulation cabin body, a water tank, an electric heating air box, a water bath, a heating rod, a partition plate, a water drain pipe, a first fragment interception filter screen, a first water level sensor, a second water level sensor, a humidity controller, an exhaust fan, a fragment collector, a drainage pipe, a second fragment interception filter screen, an automatic fragment dryer, a solidified soil sample, a fan, an electric heating wire and a temperature controller. According to the device, a heat conduction pipeline, a heat conduction control valve, a temperature sensor, a water conveying pipe and a water flow on-off valve are arranged, multiple times of drying and wetting treatment of the solidified soil sample can be carried out simultaneously, frequent sample moving is not needed, damage is reduced, and peeled fragments of the solidified soil sample in the dry-wet cycle process can be effectively collected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of soil test, specifically relates to a kind of for solidified soil dry-wet cycle test device. BACKGROUND

[0002] Solidified soil is a kind of multi-phase composite material made of soil, cementing material and additive etc. according to certain proportion, and prepared after curing. With its low cost, simple construction and other advantages, solidified soil is widely used in roadbed and foundation reinforcement, slope protection, channel lining and other engineering fields. However, the dry-wet cycle process caused by natural factors such as rainfall and surface water evaporation will have adverse effects on the working performance of solidified soil. Therefore, through indoor dry-wet cycle test, the dry-wet alternating process experienced by solidified soil in actual engineering is simulated, the physical and chemical change law is studied in depth, and the durability and stability of solidified soil under dry-wet alternating conditions are evaluated, which has important engineering significance. The traditional dry-wet cycle test method of solidified soil sample involves preparation, drying, wetting and cycle processing steps, and has the following limitations in the operation process:

[0003] (1) Dry-wet cycle test needs to dry and wet the sample for many times, which is time-consuming and low in efficiency;

[0004] (2) Frequent movement of sample in operation process is easy to cause structure damage, which may introduce artificial error, thereby affecting the accuracy and reliability of test results.

[0005] (3) The traditional test method is difficult to effectively realize the collection of spalling pieces of solidified soil sample in dry-wet cycle process. Therefore, it is necessary to study a kind of test device for dry-wet cycle of solidified soil to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims at researching a kind of test device for dry-wet cycle of solidified soil to solve the series of problems existing in the traditional dry-wet cycle test method of solidified soil sample. It has the characteristics of simple structure and convenient operation.

[0007] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0008] The utility model relates to a kind of test device for solidified soil dry-wet cycle, by dry-wet cycle simulation cabin main body, water tank, electric hot air box, water bath, heating rod, partition, drain pipe, first broken block intercepting screen, first water level sensor, second water level sensor, humidity controller, exhaust fan, broken block collector, drain pipe, second broken block intercepting screen, broken block automatic dryer, solidified soil sample, fan, heating wire, temperature controller, heat conduction pipeline, heat conduction control valve, temperature sensor, water pipe and water flow on-off valve are formed, it is characterized by: dry-wet cycle simulation cabin main body is equipped with water bath, heating rod, partition, drain pipe, first broken block intercepting screen, broken block collector, first water level sensor, second water level sensor, humidity controller, exhaust fan and temperature sensor in it;Water bath is equipped at the bottom of dry-wet cycle simulation cabin main body;Partition is located in water bath, and water bath is divided into upper water body area and lower heating area, and heating rod is installed in lower heating area;Drain pipe is installed on the right side wall of upper water body area of water bath, first broken block intercepting screen is located at the top opening of water bath, broken block collector is arranged above first broken block intercepting screen, first water level sensor is installed on the right side wall above the top of solidified soil sample, second water level sensor is arranged on the right side wall above first broken block intercepting screen, humidity controller is located on the left side wall in the lower middle part of dry-wet cycle simulation cabin main body, exhaust fan is installed on the right side wall of the top of dry-wet cycle simulation cabin main body, and temperature sensor is located on the left side wall in the upper middle part of dry-wet cycle simulation cabin main body;Drain pipe, broken block automatic dryer form broken block collector, solidified soil sample is located in the central region of broken block collector, and in the dry-wet cycle test process, the broken block of solidified soil sample peeling falls in the groove of broken block collector, broken block automatic dryer is arranged in the central interior of broken block collector, and drain pipe is located at the bottom of groove;Fan and heating wire form electric hot air box, and the right end of electric hot air box is connected with the left end of dry-wet cycle simulation cabin main body through heat conduction pipeline, and temperature controller and heat conduction control valve are installed on heat conduction pipeline;Water tank is connected with water bath located at the bottom of dry-wet cycle simulation cabin main body through water pipe, and water flow on-off valve is installed on water pipe.

[0009] Further, the heating rod, water bath and drain pipe are all made of stainless steel material, the drain pipe and water pipe are all PVC plastic pipes, the electric hot air box and heat conduction pipeline are all made of heat preservation material, and the partition is made of high-temperature-resistant nylon net.

[0010] Further, the second broken block intercepting screen is installed at both ends of the drain pipe, allowing water to pass through but intercepting the broken block of the solidified soil sample.

[0011] The utility model has the advantages as follows:

[0012] 1. The device can be used for automatic operation of multiple drying and wetting treatment of solidified soil samples, significantly improving test efficiency and avoiding the time-consuming and low-efficiency problems in traditional methods.

[0013] 2、The device is simple and convenient to operate, can flexibly simulate the needs of the solidified soil sample for different wetting environments through the provision of a double-mode wetting process, and can collect the debris of the solidified soil sample peeled off in the dry-wet cycle process by using the device, effectively solves the problem that the debris is difficult to collect in the traditional method, and significantly improves the comprehensiveness of the test data.

[0014] 3、The device can reduce the structural damage and human error caused by frequent movement of the solidified soil sample in the traditional method, and improve the reliability of the test data. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the related drawings involved in the embodiments or the prior art will be described in detail below.

[0016] Figure 1 is the overall structure schematic diagram of the device of the present application;

[0017] Figure 2 is the internal structure schematic diagram of the electric heating air bellow in the device of the present application;

[0018] Figure 3 is the internal structure schematic diagram of the dry-wet cycle simulation cabin main body in the device of the present application;

[0019] Figure 4 is the internal structure schematic diagram of the debris collector in the device of the present application;

[0020] Explanation of reference numerals in the drawing: 1-dry-wet cycle simulation cabin main body, 2-water tank, 3-electric heating air bellow, 4-water bath, 5-heating rod, 6-dividing plate, 7-drain pipe, 8-first debris intercepting filter screen, 9-first water level sensor, 10-second water level sensor, 11-humidity controller, 12-exhaust fan, 13-debris collector, 14-drain pipe, 15-second debris intercepting filter screen, 16-debris automatic drying machine, 17-solidified soil sample, 18-fan, 19-electric heating wire, 20-temperature controller, 21-heat conduction pipeline, 22-heat conduction control valve, 23-temperature sensor, 24-water supply pipe, 25-water flow on-off valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0022] The embodiments of the present application will be described in detail below with reference to the drawings.

[0023] As Figures 1-4The application discloses a kind of solidified soil sample dry-wet cycle test device, by dry-wet cycle simulation cabin main body 1, water tank 2, electric hot air box 3, water bath 4, heating rod 5, partition 6, drain pipe 7, first broken block intercepting screen 8, first water level sensor 9, second water level sensor 10, humidity controller 11, exhaust fan 12, broken block collector 13, drain pipe 14, second broken block intercepting screen 15, broken block automatic drying machine 16, solidified soil sample 17, fan 18, electric heating wire 19, temperature controller 20, heat conduction pipeline 21, heat conduction control valve 22, temperature sensor 23, water pipe 24 and water flow on-off valve 25 are constituted.The dry-wet cycle simulation cabin main body 1 is internally provided with a water bath tank 4, a heating rod 5, a partition 6, a drain pipe 7, a first broken block interception filter screen 8, a broken block collector 13, a first water level sensor 9, a second water level sensor 10, a humidity controller 11, an exhaust fan 12 and a temperature sensor 23, the bottom of the dry-wet cycle simulation cabin main body 1 is provided with the water bath tank 4, the partition 6 is located in the water bath tank 4, and the water bath tank 4 is divided into an upper water body area and a lower heating area, the heating rod 5 is installed in the lower heating area to heat water, the wetting process of the solidified soil sample 17 can adopt two ways of direct soaking wetting or heating and humidifying, the drain pipe 7 is installed on the right side wall of the upper water body area of the water bath tank 4, the first broken block interception filter screen 8 is located at the top opening of the water bath tank 4, can effectively block the broken blocks of the solidified soil sample 17 and keep the water flow unobstructed, the broken block collector 13 is arranged above the first broken block interception filter screen 8 and is used for collecting the broken blocks of the solidified soil sample 17 in the dry-wet cycle test process, the first water level sensor 9 is installed on the right side wall above the top of the solidified soil sample 17 and is used for monitoring and controlling the water level in the direct soaking wetting process of the solidified soil sample 17, the second water level sensor 10 is arranged on the right side wall above the first broken block interception filter screen 8 and has the water level dynamic monitoring function in the heating and humidifying process, so as to prevent the water level from being too high to submerge the solidified soil sample 17, the humidity controller 11 is located on the left side wall below the middle of the dry-wet cycle simulation cabin main body 1 and is used for monitoring and controlling the humidity in the dry-wet cycle simulation cabin main body 1 in real time in the heating and humidifying process of the solidified soil sample 17, so as to ensure that the humidity reaches the set range, the exhaust fan 12 is installed on the right side wall of the top of the dry-wet cycle simulation cabin main body 1, so as to ensure that the hot air is discharged in time after the solidified soil sample 17 is dried, improve the hot air circulation efficiency and make the internal environment quickly return to the initial state, and the temperature sensor 23 is located on the left side wall above the middle of the dry-wet cycle simulation cabin main body 1 and is used for monitoring the temperature in the dry-wet cycle simulation cabin main body 1 in real time, so as to ensure that the temperature is kept at the set drying temperature; the drain pipe 14 and the broken block automatic drying machine 16 constitute the broken block collector 13, the solidified soil sample 17 is located in the central region of the broken block collector 13, in the dry-wet cycle test process, the broken blocks of the solidified soil sample 17 fall into the groove of the broken block collector 13, the broken block automatic drying machine 16 is arranged in the central interior of the broken block collector 13 and can dry the wet broken blocks, and the drain pipe 14 is located at the bottom of the groove and can discharge the water in the groove in time, so as to maintain the dry environment in the broken block collector 13; the fan 18 and the electric heating wire 19 constitute the electric heating air box 3, the right end of the electric heating air box 3 is connected with the left end of the dry-wet cycle simulation cabin main body 1 through the heat conduction pipeline 21, the temperature controller 20 and the heat conduction control valve 22 are installed on the heat conduction pipeline 21 and control the heat supply process; the water tank 2 is connected with the water bath tank 4 located at the bottom of the dry-wet cycle simulation cabin main body 1 through the water conveying pipe 24, and the water flow on-off valve 25 is installed on the water conveying pipe 24 and controls the water supply.

[0024] The specific operation steps of the device are as follows:

[0025] For the dry-wet cycle test, the steps are as follows:

[0026] First, first, dry test, the solidified soil sample 17 is placed in the dry-wet cycle simulation cabin main body 1, the heating wire 19 is used for heating, when the dry temperature preset by the temperature controller 20 is reached, the fan 18 and the heat conduction control valve 22 are started synchronously, the fan 18 uniformly delivers hot air to the dry-wet cycle simulation cabin main body 1 through the heat conduction pipeline 21, and the solidified soil sample 17 is dried, the temperature sensor 23 monitors the temperature in the heat conduction pipeline 21 in real time, and the temperature is ensured to always remain at the dry temperature preset by the temperature controller 20. After the set dry time ends, the fan 18 and the heat conduction control valve 22 are closed in turn, the heating wire 19 stops heating, and the dry test process of the solidified soil sample 17 is completed. At the same time, the exhaust fan 12 is started, and the residual hot air in the dry-wet cycle simulation cabin main body 1 is discharged in time, improving the hot air circulation efficiency and ensuring that the cabin environment quickly returns to the initial state, preparing for the subsequent wet test.

[0027] Second, wet test, for direct immersion wetting: open the water flow on-off valve 25, deliver water from the water tank 2 to the water bath 4 through the water delivery pipe 24, the first water level sensor 9 monitors the water level in real time, and when the water level reaches the set height, the water flow on-off valve 25 is closed to stop water supply. The water in the water bath 4 uniformly wets the solidified soil sample 17 through the first broken block interception screen 8, realizing direct immersion wetting. For heating and humidification: start the heating rod 5 to heat the water in the water bath 4, the humidity controller 11 monitors the humidity in the dry-wet cycle simulation cabin main body 1 in real time, and when the set humidity is reached, adjust the power of the heating rod 5 to maintain stable humidity, and the second water level sensor 10 monitors the water level in real time to prevent the water level from being too high to submerge the solidified soil sample 17. The water vapor is uniformly distributed in the dry-wet cycle simulation cabin main body 1, and the gaseous humidification of the solidified soil sample 17 is completed. After the set wetting time required by the test ends, the water flow on-off valve 25 and the heating rod 5 are closed, and the drain pipe 7 is opened to discharge the water in the water bath 4 in time, and the wet test is completed.

[0028] Third, in the dry-wet cycle process, the broken blocks peeled off from the solidified soil sample 17 fall into the groove of the broken block collector 13, the broken block automatic dryer 16 is started, the hot air is uniformly delivered to the groove through the heat conduction pipeline 21 to dry the broken blocks, in addition, the accumulated water in the groove during direct immersion wetting and the water vapor generated during drying are discharged through the drain pipe 14 to ensure the dry environment in the broken block collector 13. After drying, the broken blocks are collected.

[0029] Fourth, after one dry-wet cycle is completed, repeat the first step, the second step and the third step, start the second dry-wet cycle until all the dry-wet cycles are completed.

[0030] The main features and advantages of the present application are described in detail above, and it should be noted that in the specification, relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations. Through the above description, those skilled in the art can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features, and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A test apparatus for wet-dry cycle of solidified soil, comprising a wet-dry cycle simulation chamber body (1), a water tank (2), an electric heating box (3), a water bath (4), a heating rod (5), a partition (6), a drain pipe (7), a first fragment interception filter (8), a first water level sensor (9), a second water level sensor (10), a humidity controller (11), an exhaust fan (12), a fragment collector (13), a drain pipe (14), a second fragment interception filter (15), an automatic fragment dryer (16), a solidified soil sample (17), a fan (18), an electric heating wire (19), a temperature controller (20), a heat conduction pipe (21), a heat conduction control valve (22), a temperature sensor (23), a water supply pipe (24), and a water flow shut-off valve (25), characterized in that: The main body (1) of the wet-dry cycle simulation chamber is equipped with a water bath (4), heating rods (5), partitions (6), drain pipes (7), a first debris interception filter (8), a debris collector (13), a first water level sensor (9), a second water level sensor (10), a humidity controller (11), an exhaust fan (12), and a temperature sensor (23); the bottom of the main body (1) of the wet-dry cycle simulation chamber is equipped with a water bath (4); the partitions (6) are located inside the water bath (4), dividing the water bath (4) into an upper water area and a lower heating area, the lower heating area A heating rod (5) is installed inside; a drain pipe (7) is installed on the right side wall of the upper water area of ​​the water bath (4); a first fragment interception filter (8) is located at the top opening of the water bath (4); a fragment collector (13) is set above the first fragment interception filter (8); a first water level sensor (9) is installed on the right side wall above the top of the solidified soil sample (17); a second water level sensor (10) is set on the right side wall above the first fragment interception filter (8); and a humidity controller (11) is located on the lower left side of the main body (1) of the wet-dry cycle simulation chamber. On the side wall, an exhaust fan (12) is installed on the top right side wall of the dry-wet cycle simulation chamber body (1), and a temperature sensor (23) is located on the upper left side wall of the middle part of the dry-wet cycle simulation chamber body (1); a drain pipe (14) and an automatic fragment dryer (16) form a fragment collector (13), and a solidified soil sample (17) is located in the central area of ​​the fragment collector (13). During the dry-wet cycle test, fragments of the solidified soil sample (17) fall into the groove of the fragment collector (13), and the automatic fragment dryer (16) is set in the fragment collector. Inside the center of the device (13), the drain pipe (14) is located at the bottom of the groove; the fan (18) and the heating wire (19) form an electric heating box (3), the right end of the electric heating box (3) is connected to the left end of the dry and wet cycle simulation chamber body (1) through the heat conduction pipe (21), and the temperature controller (20) and the heat conduction control valve (22) are installed on the heat conduction pipe (21); the water tank (2) is connected to the water bath (4) located at the bottom of the dry and wet cycle simulation chamber body (1) through the water supply pipe (24), and the water flow cut-off valve (25) is installed on the water supply pipe (24).

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