• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention discloses a damaged concrete permeability detection device including an air compressor, a water tank and a damaged concrete penetrometer, the concrete penetrometer comprising essentially four parts: an upper cover, a support sleeve a, a lower cover and a support base; a pressure gauge, a water inlet, a vent pipe and an annular sleeve b are distributed on the upper cover; the intermediate support sleeve a can take over the task of attaching a sample; and the bottom cover includes a water collector and a water outlet pipe; the top cover, the support sleeve a and the bottom cover are connected by high-strength bolts with a diameter of 14 mm; and a measuring cup for collecting water is arranged below the water outlet pipe.
    公开号:BE1026123B1
    申请号:E20195236
    申请日:2019-04-11
    公开日:2020-04-29
    发明作者:Yuan Qin；Weili Ma；Yingbiao Ma；Yulong Wang；Yue Zhang；Xianwei Zhang
    申请人:Univ Xian Technology；
    IPC主号:
    专利说明:

    PERMEABILITY DETECTION DEVICE FOR DAMAGED CONCRETE
    TECHNICAL FIELD
    The present invention belongs to the field of construction material detection device technologies and relates in particular to a permeability detection device for damaged concrete.
    BACKGROUND
    Anti-permeability of concrete refers to the ability of concrete to withstand the ingress of pressurized water. Almost all processes affecting the durability of concrete are related to water; thus, anti-permeability is an important index for evaluating the durability of concrete, since permeability is not only important for structures that require water resistance, but above all serves to assess the ability of concrete to permeate and corrode through corrosion media in one Resist environment. At present, anti-permeability is generally considered to be an important factor in evaluating the durability of concrete. As long as the permeability of concrete is very low, concrete has the desired ability to resist the permeation of water and other corrosive media, so that all durability indices of concrete are improved accordingly.
    A general permeability detection method for concrete is carried out based on a standard long-term performance and durability test of normal concrete (GBJ 82-1985) using an HS-4B concrete penetrometer. A micro crack exists naturally in concrete. Internal cracks develop under external load, and cracks even appear on the concrete surface. In this case, this method cannot be used to detect the permeability of damaged concrete. It is therefore necessary to develop a detection system that is suitable for the detection of the permeability of damaged concrete.
    PRESENTATION OF THE INVENTION
    An object of the present invention is to provide a permeability detection device for damaged concrete to solve a permeability detection problem of existing damaged concrete.
    A technical solution used in the present invention provides a damaged concrete permeability detection device that includes a concrete penetrometer, the concrete penetrometer connected to a water tank and the water tank connected to an air compressor; the concrete penetrometer includes a support base and several vertical support rods are attached to the support base; upper ends of a plurality of the support rods are connected together with a lower cover; on the bottom cover is one
    BE2019 / 5236
    Support sleeve a arranged; an upper cover is arranged on the support sleeve a; a water injection pipe is arranged on the upper cover; the water injection pipe is in internal communication with the support sleeve a; further, a water inlet is arranged on a side wall of an upper portion of the water injection pipe; the water inlet is connected to a lower portion of the water tank using a pipe; furthermore, a funnel-shaped water collecting device is arranged within the support sleeve a; a water outlet pipe is attached to a lower end of the water collecting device; the water outlet pipe runs down through the lower cover; a measuring cup is also arranged on an upper surface of the support base; the measuring cup is directly opposite the water outlet pipe; an annular sleeve b fixedly attached to an inner wall of the support sleeve a is fixed below the top cover; and the annular sleeve b and the water collecting device are separated and face each other vertically.
    Features of the present invention are further provided as follows:
    A vent pipe is located on the top cover; the vent pipe is in communication internally with the support sleeve a; and further a valve b is arranged on the vent pipe.
    A rubber layer is arranged on a contact surface between the support sleeve and the lower cover, and the lower cover is fastened to the support sleeve by a high-strength bolt.
    A rubber layer is arranged on a contact surface between the support sleeve and the top cover, and the top cover is fastened to the support sleeve by a high-strength bolt.
    Furthermore, a pressure gauge is arranged on an upper part of the water injection pipe.
    A valve a is arranged on the water injection pipe and the valve a is located below the water inlet.
    In the concrete permeability detection system, the hardening time, the concrete strength, a concrete type, and other sample conditions are not limited. In addition, a permeation water column is provided by pressurizing the air compressor, a height of the water column is adjustable, and an adjustment range is 0 to 0.8 MPa.
    Advantageous effects of the present invention are as follows: The permeability detection device according to the invention for damaged concrete can measure the relative
    Provide permeability performance of damaged concrete without the need to manufacture a relatively large sample; can implement the detection of a small sample and can
    Permeability performance of samples with different curing times, different concrete strength and different types of concrete according to different requirements
    Implement BE2019 / 5236; For a thorough understanding of the condition of cracked concrete, the device can simulate leakage situations of cracked concrete at different water column heights; and further, a crack leakage principle of concrete can be examined by analyzing a leakage situation of a crack and a leakage parameter corresponding to the crack to provide a reliable theoretical basis for the safe execution of a water conservation project.
    BRIEF DESCRIPTION OF THE DRAWINGS
    1 is a schematic structural diagram of a permeability detection device for damaged concrete according to the present invention;
    FIG. 2 is a schematic structural diagram of a damaged concrete penetrometer of a damaged concrete permeability detector according to the present invention and FIG
    3 is a schematic diagram of the use of a damaged concrete penetrometer of a damaged concrete permeability detector according to the present invention.
    In the figures, 1. designate a pressure gauge; 2. a water inlet; 3. a valve a; 4. a vent pipe; 5. an upper cover; 7. an annular sleeve b; 8. a sample; 9. a support sleeve a; 10. a water collector; 11. a bottom cover; 12. a water outlet pipe; 13. a measuring cup and 14. a support base.
    DETAILED DESCRIPTION
    Details of the present invention are described below with reference to the accompanying drawings and certain implementations.
    As shown in Fig. 1, a damaged concrete permeability detection apparatus according to the present invention includes a concrete penetrometer (shown in Fig. 2), the concrete penetrometer connected to a water tank and the water tank connected to an air compressor; the concrete penetrometer includes a support base 14 and a plurality of vertical support rods are attached to the support base 14; upper ends of a plurality of the support rods are connected together with a lower cover 11; a support sleeve a 9 is arranged on the lower cover 11; on the support sleeve a 9, an upper cover 5 is arranged; a water injection pipe is arranged on the upper cover 5; the water injection pipe is in communication internally with the support sleeve a 9; further, a water inlet 2 is arranged on a side wall of an upper portion of the water injection pipe; the water inlet 2 is connected to a lower portion of the water tank using a pipe; furthermore, a funnel-shaped water collecting device 10 is arranged within the support sleeve a 9; a water outlet pipe 12 is attached to a lower end of the water collecting device 10; the water outlet pipe 12 runs down through the lower cover 11; is also on an upper surface of the support base 14
    BE2019 / 5236
    Measuring cup 13 arranged; the measuring cup 13 is directly opposite the water outlet pipe 12; an annular sleeve b 7 fixedly attached to an inner wall of the support sleeve a 9 is attached below the upper cover 5; and the annular sleeve b 7 and that
    Water collecting device 10 are separate and are located vertically opposite one another.
    A vent pipe 4 is arranged on the upper cover 5; the vent pipe 4 is in communication internally with the support sleeve a 9; and further a valve b is arranged on the vent pipe 4.
    A rubber layer is arranged on a contact surface between the support sleeve 9 and the lower cover 11, and the lower cover 11 is fastened to the support sleeve 9 by a high-strength bolt.
    A rubber layer is arranged on a contact surface between the support sleeve 9 and the upper cover 5, and the upper cover 5 is fastened to the support sleeve 9 by a high-strength bolt.
    Furthermore, a pressure gauge 1 is arranged on an upper part of the water injection pipe.
    A valve a 3 is arranged on the water injection pipe, and the valve a 3 is located below the water inlet 2.
    A detailed description is provided below with reference to certain embodiments.
    The volume of an air storage tank is 40 l and the nominal discharge pressure is 0.8 MPa. A water tank is made of stainless steel and its volume is 10 l. A penetrometer for damaged concrete is a key device of the system and is made of stainless steel. An air compressor, the water tank and the penetrometer for damaged concrete are connected using pressure-bearing flexible pipes with a diameter of 12 mm. Air is discharged through the air compressor and pressed into the water tank. The water container then presses water into the damaged concrete penetrometer to create water pressure in the penetrometer. The water pressure can be adjusted using a pressure gauge built in the air compressor and a pressure gauge 1 on the penetrometer, and a water pressure adjustment range is 0 to 0.8 MPa, i.e. H. the highest water column that can be simulated is 80 m.
    The penetrometer for damaged concrete is an essential component of the
    Detection system. As shown in Figure 2, the component includes four parts: an upper one
    Cover 5, a support sleeve a 9, a lower cover 11 and a support base 14.
    A diameter of the top cover is 200 mm, a thickness of the top cover is 10 mm, on the top cover there is a pressure gauge 1 (a measuring range is 0 to
    BE2019 / 5236
    MPa), a water inlet 2 (a diameter is 20 mm and a height is 10 cm), a vent pipe 4 (a diameter is 20 mm, a height is 5 cm and a center of the vent pipe 4 is 25 mm from the central axis of the permeation device ) and six bolt holes (bolts are high-strength bolts with a diameter of 14 mm). Connected below the roof level is a thin-walled annular sleeve b 7 with a diameter of 40 mm, a height of 40 mm and a wall thickness of 10 mm is connected below a level of the upper cover; the sleeve is welded below the top cover of the penetrometer to prevent water leakage through a sample sidewall and an error to avoid an error in the measurement data.
    A central part of the penetrometer is a support sleeve a 9 with an outer diameter of 200 mm, an inner diameter of 100 mm, a height of 13 mm and a wall thickness of 10 mm; the support sleeve a 9 is connected to the upper cover 5 and the lower cover 11 using high-strength bolts; and a rubber sheet is disposed on a connecting part of the support sleeve a 9 and the lower cover 11, and the rubber sheet is used to prevent water from seeping through a side wall of the sample to avoid affecting the accuracy of experimental data.
    The lower cover 11 with a diameter of 200 mm and a thickness of 10 mm is located below the support sleeve a 9. In a middle of the lower cover 11 there is a water outlet pipe 12 (a diameter is 10 mm and a height is 6 cm). Six bolt holes are arranged near edges of the lower cover 11 (a size of the bolt hole is the same as that of the upper cover). A conical water collecting device 10 (a height is 40 mm) is connected to the lower cover, and a connection thereof is the same as that used for the upper cover.
    A sample of damaged concrete 8 used to detect the permeability is placed on the water collecting device 10; an upper surface of the sample is in contact with the annular sleeve 7; and a contact part between the sample and the annular sleeve 7 is connected by means of epoxy resin adhesive in order to prevent water from flowing out through side walls of the sample and the penetrometer in order to avoid effects on the detection result.
    A principle of measurement of the penetrometer set for damaged concrete is as follows: the water tank is connected to the water inlet 2 of the penetrometer in order to provide constant water pressure for the penetrometer; the concrete sample 8 with cracks is penetrated under the influence of the constant water pressure. Water flows through the sample 8 (shown in Fig. 3) from the water outlet pipe 12 at the bottom of the penetrometer and is collected by a measuring cup 13 located below the penetrometer; and the permeability of the
    BE2019 / 5236
    Concrete sample with cracks is calculated by calculating a water yield per unit of time.
    A method for using a permeability detection device according to the invention for damaged concrete includes in particular the following steps:
    Step 1: Before the permeability measurement, pretreat a sample 8 of damaged concrete, which essentially comprises: immersing the sample of damaged concrete in water for two days, removing the sample, wiping water off a sample surface with a cotton fabric and drying, except for there are no signs of water on the sample surface.
    Step 2: Placing the sample of damaged concrete 8 in a damaged concrete penetrometer, with a specific placement procedure including:
    Step 2.1: connecting an annular sleeve a 9 to a lower cover 11 and arranging a rubber layer between the annular sleeve a 9 and the lower cover 11 in order to connect them by means of a high-strength bolt 6.
    Step 2.2: placing the sample of damaged concrete 8 on the water collecting device 10.
    Step 2.3: coating a contact surface between an annular sleeve b 7 and the sample 8 with epoxy resin adhesive in order to connect the sample 8 to the annular sleeve b 7.
    Step 2.4: Connect a top cover 5 to the annular sleeve a 9 using a high strength bolt.
    Step 3: Connect an air compressor, water tank and penetrated concrete penetrometer using a pressure-bearing flexible pipe.
    Step 4: Start the measurement: first switch on a power supply to the air compressor, open a water outlet pipe 2 and a vent pipe 4 of the penetrometer, and when water flows out through the vent pipe 4, close the vent pipe 4. During the measurement, the water pressure of the water tank is adjusted by adjusting the Air pressure of the air compressor is set so that the water container provides a constant water pressure for the penetrometer, the water pressure can be set, a value of the water pressure can reach up to 0.8 MPa, water flows from water inlet 2 into the penetrometer, some of the water flows through Cracks in the damaged concrete to the bottom of the penetrometer, flows out of the water outlet pipe 12 and is collected by a measuring cup 13 located underneath. To reduce the impact of self-repairing cracks, the measurement is stopped within a fixed measurement time and the flow rate is calculated.
    Step 5: After completing the measurement, turn off the power to the air compressor, open the top cover of the penetrometer, dispose of the water inside, and take out the sample.
    BE2019 / 5236
    The permeability detection device for damaged concrete according to the invention has the following features:
    (1) Permeability detection for damaged concrete can be implemented.
    According to the present invention, permeability detection for damaged concrete can be implemented, and the assessment of the permeability of concrete with cracks is not only suitable for concrete materials, but can also be suitable for the permeability test of rock materials.
    (2) A sample used is small in size, easy to manufacture and inexpensive.
    During the manufacture of the sample used in the damaged concrete permeability detection apparatus according to the present invention, the sample is small in size, easy to mix, harden and the like, and the cost of the sample is reduced.
    (3) The permeability of concrete can be detected when a high water column is used.
    The permeability detection device for damaged concrete according to the present invention can change a value of water pressure by setting an air pressure value to perform a permeability test under different constant water pressure.
    权利要求:
    Claims (6)
    [1]
    1. Permeability detector for damaged concrete, comprising a concrete penetrometer, the concrete penetrometer being connected to a water tank and the water tank being connected to an air compressor; wherein the concrete penetrometer comprises a support base (14) and a plurality of vertical support rods are attached to the support base (14); wherein upper ends of a plurality of the support rods are connected together with a lower cover (11); a support sleeve a (9) being arranged on the lower cover (11); an upper cover (5) being arranged on the support sleeve a (9); a water injection pipe being arranged on the upper cover (5); wherein the water injection pipe is in communication with the support sleeve a (9); wherein a water inlet (2) is further arranged on a side wall of an upper portion of the water injection pipe; wherein the water inlet (2) is connected to a lower portion of the water tank using a pipe; wherein a funnel-shaped water collecting device (10) is further arranged within the support sleeve a (9); a water outlet pipe (12) is attached to a lower end of the water collecting device (10); the water outlet pipe (12) extending down through the lower cover (11); wherein a measuring cup (13) is further arranged on an upper surface of the support base (14); the measuring cup (13) lying directly opposite the water outlet pipe (12); an annular sleeve b (7) fixedly attached to an inner wall of the support sleeve a (9) is fixed below the top cover (5), and wherein the annular sleeve b (7) and the water collecting device (10) are separated and vertically opposed to each other.
    [2]
    2. Permeability detection device for damaged concrete according to claim 1, wherein a vent pipe (4) is arranged on the upper cover (5); wherein the vent pipe (4) is in communication with the support sleeve a (9); and wherein a valve b is further arranged on the vent pipe (4).
    [3]
    3. Permeability detector for damaged concrete according to claim 1, wherein a rubber layer layer is arranged on a contact surface between the support sleeve (9) and the lower cover (11) and the lower cover (11) is fastened to the support sleeve (9) by a high-strength bolt .
    [4]
    4. Permeability detector for damaged concrete according to claim 1, wherein a rubber layer layer is arranged on a contact surface between the support sleeve (9) and the upper cover (5) and the upper cover (5) is fastened to the support sleeve (9) by a high-strength bolt .
    [5]
    5. Permeability detector for damaged concrete according to claim 1, wherein a pressure gauge (1) is further arranged on an upper part of the water injection pipe.
    BE2019 / 5236
    [6]
    6. Permeability detector for damaged concrete according to claim 1, wherein on
    Water injection pipe a valve a (3) is arranged and the valve a (3) below the
    Water inlets (2) is located.
    类似技术:
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    同族专利:
    公开号 | 公开日
    BE1026123A1|2019-10-15|
    CN108982327A|2018-12-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH07198583A|1993-12-28|1995-08-01|Chuo Kaihatsu Kk|Water permeability measuring apparatus and water permeability measuring method using the same|
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    CN103698260B|2014-01-13|2017-07-28|江苏省交通科学研究院股份有限公司|A kind of new-old pavement binder course water permeability detection method and detection means|
    CN105136645A|2015-09-13|2015-12-09|华南理工大学|Drainage asphalt mixture water permeability performance test device and test method thereof|
    CN105527213A|2016-01-14|2016-04-27|滨州学院|Device and method for testing solid sample microfracture permeable rate|
    CN106769774A|2017-01-13|2017-05-31|河南省交院工程检测科技有限公司|Bituminous paving infiltration detection means and the method for the constant pressure varying head that a kind of anti-side is oozed|CN111307683A|2019-11-22|2020-06-19|浙江大学|Self-balancing reinforced concrete structure impermeability test device and method|
    CN112858141A|2021-04-13|2021-05-28|西南石油大学|System and method for testing permeability of concrete under negative temperature and salt solution|
    法律状态:
    2020-06-24| FG| Patent granted|Effective date: 20200429 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201810909852.0A|CN108982327A|2018-08-10|2018-08-10|A kind of damage concrete permeability detection device|
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