CN115521163A - Method and device for removing free water in cement concrete - Google Patents
Method and device for removing free water in cement concrete Download PDFInfo
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- CN115521163A CN115521163A CN202211181132.XA CN202211181132A CN115521163A CN 115521163 A CN115521163 A CN 115521163A CN 202211181132 A CN202211181132 A CN 202211181132A CN 115521163 A CN115521163 A CN 115521163A
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- cement concrete
- concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0204—Selection of the hardening environment making use of electric or wave energy or particle radiation
- C04B40/0209—Electric, magnetic or electromagnetic fields
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0003—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of electric or wave energy or particle radiation
- C04B40/0007—Electric, magnetic or electromagnetic fields
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0067—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of vibrations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a method and a device for removing free water in cement concrete. Inserting a plurality of conductive materials into poured cement concrete, wherein at least one conductive material in the plurality of conductive materials is a positive electrode, and at least one conductive material is a negative electrode; and electrifying direct current to the anode and the cathode to form a preset voltage, electrifying the direct current to the anode and the cathode by the method for removing free water in the cement concrete disclosed by the above, so that the free water between the anode and the cathode can flow in a specific direction, when the water is excessively gathered, the water can be separated out from the cement concrete, the water content of the cement concrete is reduced, the strength of the concrete can be improved by reducing the water content of the cement concrete, therefore, when the strength grade of the concrete does not reach the standard due to excessive water addition, the strength grade of the concrete can be effectively improved by the method disclosed by the application, the strength grade of the concrete can reach the standard, the strength grade of the concrete is prevented from being scrapped due to the failure of the strength grade of the concrete, and the waste of materials is avoided.
Description
Technical Field
The invention relates to the field of buildings, in particular to a method and a device for removing free water in cement concrete.
Background
The cement concrete is an engineering composite material formed by mixing cement, sand, stone and the like into a whole by water, and is generally prepared according to requirements, namely water, cement, sand, stone and the like in different proportions are prepared according to concrete strength grades, wherein the water content can directly influence the performance of the cement concrete, so that when the cement concrete with the required grade is prepared, the water content in the cement concrete needs to be ensured to be within a preset range.
However, in the cement concrete preparation process, excessive water is inevitably added, which reduces the concrete strength grade, and finally only cement concrete which cannot reach the strength grade is scrapped, thereby wasting materials seriously.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a method and an apparatus for removing free water in cement concrete, so as to solve the problem that cement concrete is wasted due to the fact that the strength grade of the concrete cannot meet the requirement caused by excessive water addition in the existing cement concrete configuration process.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the invention discloses a method for removing free water in cement concrete in a first aspect, which comprises the following steps:
s1, inserting a plurality of conductive materials into poured cement concrete, wherein at least one conductive material in the plurality of conductive materials is a positive electrode, and at least one conductive material is a negative electrode;
and S2, electrifying direct current to the positive electrode and the negative electrode to form preset voltage.
Preferably, S2 includes:
and intermittently electrifying direct current to the positive electrode and the negative electrode, wherein the negative electrode and the positive electrode form preset voltage when the direct current is electrified.
Preferably, the method further comprises the following steps:
adding activated carbon into the cement concrete.
Preferably, after S2, the method further comprises:
s3, judging whether the water discharge of the cement concrete reaches a preset value or not;
s4, if the water discharge of the cement concrete reaches a preset value, electrifying in an intermittent mode;
s5, if the water discharge of the cement concrete does not reach a preset value, exchanging the anode and the cathode of the conductive material;
and S6, electrifying in an intermittent mode.
Preferably, when performing S2, the method further includes:
vibration is applied to the cement concrete.
The second aspect of the invention discloses a device for removing free water in cement concrete, which comprises: the device comprises a direct current power supply and a plurality of conductive materials connected with the direct current power supply, wherein the conductive materials are used for being inserted into cement concrete.
Preferably, the plurality of conductive materials are distributed in the concrete in a plum blossom shape.
Preferably, the method further comprises the following steps: and the vibration mechanism is used for vibrating the cement concrete.
From the above, the invention discloses a method and a device for removing free water in cement concrete. Inserting a plurality of conductive materials into the poured cement concrete, wherein at least one conductive material in the plurality of conductive materials is a positive electrode, and at least one conductive material is a negative electrode; and electrifying direct current to the anode and the cathode to form preset voltage, electrifying direct current to the anode and the cathode by the method for removing free water in the cement concrete, so that the free water between the anode and the cathode can flow in a specific direction, when the water is excessively gathered, the water can be separated out from the cement concrete, the water content of the cement concrete is reduced, the strength of the concrete can be improved by reducing the water content of the cement concrete, therefore, when the strength of the concrete does not reach the standard due to excessive water addition, the strength grade of the concrete can be effectively improved by the method disclosed by the application, the strength grade of the concrete can reach the standard, the concrete is prevented from being scrapped due to the fact that the strength grade of the concrete does not reach the standard, and material waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method for removing free water from cement concrete according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for removing free water from cement concrete according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a plurality of conductive materials inserted into cement concrete in a plum blossom shape according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the invention provides a method for removing free water in cement concrete, and referring to fig. 1, fig. 1 is a flow schematic diagram of the method for removing free water in cement concrete, and the method for removing free water in cement concrete at least comprises the following steps:
s1, inserting a plurality of conductive materials into poured cement concrete, wherein at least one conductive material in the plurality of conductive materials is a positive electrode, and at least one conductive material is a negative electrode.
And S2, supplying direct current to the positive electrode and the negative electrode to form a preset voltage.
It should be noted that the conductive material may be a copper sheet or a copper rod, or an iron sheet or an iron rod, and those skilled in the art may select the conductive material according to requirements;
the preset voltage is determined according to the distance between the cathode and the anode to ensure the potential gradient between the anode and the cathode, in the embodiment of the present invention, the potential gradient may be 1.25V/cm, and a person skilled in the art may select the preset voltage according to the strength grade and the target strength grade of the current concrete, which is not specifically limited in this embodiment.
At least one conductive material is selected from the multiple conductive materials to serve as a positive electrode, at least one conductive material is connected with the positive electrode of the power supply at the last night, the conductive material of the positive electrode is connected with the negative electrode of the power supply, a loop can be formed in the cement concrete, and then a certain voltage can be formed.
It should be noted that, by applying a dc current to the positive electrode and the negative electrode to form a predetermined voltage, water in the cement concrete between the positive electrode and the negative electrode can be made to flow in a specific direction, and when the water is excessively accumulated, the water can be precipitated from the surface of the cement concrete, thereby reducing the amount of water in the cement concrete.
It is noted that when inserting conductive material into the cement concrete, one of the conductive materials is required to be placed close to the formwork.
According to the embodiment of the invention, a plurality of conductive materials are inserted into poured cement concrete, at least one conductive material in the plurality of conductive materials is taken as an anode, and at least one conductive material is taken as a cathode; and electrifying direct current to the anode and the cathode to form preset voltage, electrifying direct current to the anode and the cathode by the method for removing free water in the cement concrete, so that the free water between the anode and the cathode can flow in a specific direction, when water is excessively gathered, the water can be separated out from the cement concrete, the water content of the cement concrete is reduced, the strength of the concrete can be improved by reducing the water content of the cement concrete, therefore, when the strength grade of the concrete does not reach the standard due to excessive water addition, the strength grade of the concrete can be effectively improved by the method disclosed by the application, the strength grade of the concrete can reach the standard, the concrete is prevented from being scrapped when the strength grade of the concrete does not reach the standard, the waste of materials is avoided, in the process of configuring the high-strength concrete (the strength grade is more than C120), the water can be fully stirred by a certain proportion of water, so that the components of the water cannot be reduced, and by the method disclosed by the application, after the cement concrete is configured, the target high-strength concrete can be obtained by reducing the cement, and the difficulty in configuring the high-strength concrete can be effectively reduced.
Specifically, in the process of executing step S2, the specific executing step of step S2 includes:
and intermittently supplying direct current to the positive electrode and the negative electrode, wherein the negative electrode and the positive electrode form preset voltage when the positive electrode and the negative electrode are electrified.
It should be noted that, by intermittently supplying direct current to the positive electrode and the negative electrode, on one hand, the corrosion of the conductive material can be effectively slowed down, on the other hand, the free water accumulation time can be ensured, and the electroosmosis effect is improved; different concrete ingredients and strengths, different electrifying and intermittence time, and the electrifying time and the intermittence time can be selected by the technical personnel according to the requirements.
Preferably, the power is applied for 2h, and the interval is 15min.
Further, the method for removing free water in the cement concrete also comprises the following steps:
adding activated carbon into the cement concrete.
It should be noted that, by adding activated carbon into the cement concrete, the conductivity between the positive electrode and the negative electrode can be effectively improved, which is favorable for improving the flow velocity of water in the cement concrete, and thus, water in the concrete can be rapidly precipitated.
Further, after executing step S2, referring to fig. 2, the following steps are also included:
s3, judging whether the water discharge of the cement concrete reaches a preset value or not, and if the water discharge of the cement concrete reaches the preset value, executing the step S4; and if the water discharge of the cement concrete does not reach the preset value, executing the step S5.
And S4, electrifying in an intermittent mode.
And S5, exchanging the anode and the cathode of the conductive material, and electrifying in an intermittent mode.
And S6, electrifying in an intermittent mode.
It should be noted that, by judging whether the water displacement of the cement concrete reaches the preset value, it can be worth judging whether the electroosmosis effect is obvious, when the water displacement of the cement concrete does not reach the preset value, it can be judged that the electroosmosis effect is abnormal, therefore, step S5 needs to be executed, namely, the positive electrode and the negative electrode of the conducting material need to be exchanged, even if the conducting material originally connected with the negative electrode of the power supply is connected with the positive electrode of the power supply, and the conducting material originally connected with the positive electrode of the power supply is connected with the negative electrode of the power supply, then step S6 is executed, namely, the intermittent power supply is adopted; when the water discharge of the cement concrete reaches a preset value, the electroosmosis effect can be judged to be normal, so that the step S4 needs to be executed, namely, the intermittent energization is adopted, so that the corrosion of the conductive material is slowed down, the free water accumulation time is ensured, and the electroosmosis effect is improved; different concrete ingredients and strengths, different electrifying time and different intermittence time, and the electrifying time and the intermittence time can be selected by a person skilled in the art according to requirements.
It should be noted that the reason why the water displacement of the cement concrete does not reach the preset value is that the water flow channel of the cement concrete is blocked and cannot flow to the same position, so that the water flow direction in the cement concrete is changed by exchanging the positive electrode and the negative electrode of the conductive material, so that the water in the cement concrete can flow to the same position, and the water in the cement concrete can be separated out.
Further, when step S2 is executed, the following steps are also executed:
vibration is applied to the cement concrete.
It should be noted that, by applying vibration to the cement concrete, a water flow channel can be formed between the positive electrode and the negative electrode, so that the flow velocity of water in the cement concrete can be increased, and water in the concrete can be rapidly precipitated.
It should be further noted that, by applying vibration to the cement concrete, the gas in the cement concrete can be exhausted, so that the cement concrete is more compact, and the strength of the concrete is further improved.
Based on the method for removing free water in cement concrete, the embodiment of the invention also provides a device for removing free water in cement concrete, which comprises the following steps: a direct current power supply 1 and a plurality of conducting materials 2 connected with the direct current power supply, wherein the conducting materials 1 are used for inserting cement concrete.
It should be noted that, after the dc power supply 1 and the conductive material 2 are powered on, the conductive material 2 is inserted into the cement concrete, so that water in the cement concrete between the positive conductive material 2 and the negative conductive material 2 can flow in a specific direction, and when the water is gathered too much, the water will be separated out, thereby reducing the water content in the cement concrete and improving the strength grade of the concrete.
Preferably, one conductive material 2 of the plurality of conductive materials 2 may be set as a negative electrode, and the remaining conductive materials 2 may be set as a positive electrode.
Specifically, referring to fig. 3, a plurality of conductive materials 2 are distributed in the concrete in a quincunx shape.
It should be noted that the plurality of conductive materials 2 may be distributed in the concrete in a plum blossom shape, or may be arranged in the concrete in a parallel staggered manner.
Further, get rid of the device of free water in the cement concrete still includes: and the vibration mechanism is used for vibrating the cement concrete.
It should be noted that, by providing the vibration mechanism for vibrating the cement concrete, the vibration mechanism applies vibration to the cement concrete, so that a water flow channel can be formed between the positive electrode and the negative electrode, and further the flow velocity of water in the cement concrete can be increased, and further the water in the concrete can be rapidly precipitated.
It should be noted that the vibration mechanism applies vibration to the cement concrete, so that the gas in the cement concrete can be exhausted, the cement concrete is more compact, and the strength of the concrete is further improved.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments, which are substantially similar to the method embodiments, are described in a relatively simple manner, and reference may be made to some descriptions of the method embodiments for relevant points. The above-described system and system embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for removing free water in cement concrete is characterized by comprising the following steps:
s1, inserting a plurality of conductive materials into poured cement concrete, wherein at least one conductive material in the plurality of conductive materials is a positive electrode, and at least one conductive material is a negative electrode;
and S2, electrifying direct current to the positive electrode and the negative electrode to form preset voltage.
2. The method according to claim 1, wherein the S2 comprises:
and intermittently electrifying direct current to the anode and the cathode, wherein the cathode and the anode form preset voltage when electrified.
3. The method of claim 1, further comprising:
adding activated carbon into the cement concrete.
4. The method of claim 1, further comprising, after the S2:
s3, judging whether the water discharge of the cement concrete reaches a preset value or not;
s4, if the water discharge of the cement concrete reaches a preset value, electrifying in an intermittent mode;
s5, if the water discharge of the cement concrete does not reach a preset value, exchanging the anode and the cathode of a conductive material;
and S6, electrifying in an intermittent mode.
5. The method of claim 1, when performing S2, further comprising:
applying vibration to the cement concrete.
6. A device for removing free water in cement concrete is characterized by comprising: the device comprises a direct current power supply and a plurality of conductive materials connected with the direct current power supply, wherein the conductive materials are used for being inserted into cement concrete.
7. The apparatus of claim 6, wherein the plurality of conductive materials are distributed in the concrete in a quincunx pattern.
8. The apparatus of claim 6, further comprising: and the vibration mechanism is used for vibrating the cement concrete.
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| CN202211181132.XA CN115521163A (en) | 2022-09-27 | 2022-09-27 | Method and device for removing free water in cement concrete |
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| CN202211181132.XA CN115521163A (en) | 2022-09-27 | 2022-09-27 | Method and device for removing free water in cement concrete |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415825A (en) * | 2002-12-14 | 2003-05-07 | 大连理工大学 | Eletroosmosis technique for concrete |
| CN105649223A (en) * | 2016-01-11 | 2016-06-08 | 顾容天 | Electroosmosis waterproofing system for concrete |
| CN110344508A (en) * | 2019-07-11 | 2019-10-18 | 派纳斯有限公司 | A kind of waterproof and dampproof system anode titanium wire installation method of electro-osmosis |
| US20200377423A1 (en) * | 2019-06-03 | 2020-12-03 | National Taiwan University Of Science And Technology | Cement-based cementitious material and its formation method |
| CN114892835A (en) * | 2022-05-19 | 2022-08-12 | 长沙同强电子科技有限公司 | Electrode multi-point layout system of electroosmosis pulse anti-permeability dehumidification system |
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- 2022-09-27 CN CN202211181132.XA patent/CN115521163A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415825A (en) * | 2002-12-14 | 2003-05-07 | 大连理工大学 | Eletroosmosis technique for concrete |
| CN105649223A (en) * | 2016-01-11 | 2016-06-08 | 顾容天 | Electroosmosis waterproofing system for concrete |
| US20200377423A1 (en) * | 2019-06-03 | 2020-12-03 | National Taiwan University Of Science And Technology | Cement-based cementitious material and its formation method |
| CN110344508A (en) * | 2019-07-11 | 2019-10-18 | 派纳斯有限公司 | A kind of waterproof and dampproof system anode titanium wire installation method of electro-osmosis |
| CN114892835A (en) * | 2022-05-19 | 2022-08-12 | 长沙同强电子科技有限公司 | Electrode multi-point layout system of electroosmosis pulse anti-permeability dehumidification system |
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