CN108081472A - A kind of concrete stirring moisture control system based on hydration heat of concrete - Google Patents
A kind of concrete stirring moisture control system based on hydration heat of concrete Download PDFInfo
- Publication number
- CN108081472A CN108081472A CN201810047585.0A CN201810047585A CN108081472A CN 108081472 A CN108081472 A CN 108081472A CN 201810047585 A CN201810047585 A CN 201810047585A CN 108081472 A CN108081472 A CN 108081472A
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- concrete
- plc
- solenoid valve
- thermal resistance
- output terminal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006703 hydration reaction Methods 0.000 title claims abstract description 34
- 230000036571 hydration Effects 0.000 title claims abstract description 23
- 238000003756 stirring Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000004568 cement Substances 0.000 claims abstract description 21
- 230000037452 priming Effects 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 26
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000005619 thermoelectricity Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 238000005520 cutting process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 241000894007 species Species 0.000 description 6
- 229910052918 calcium silicate Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 3
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 3
- 235000019976 tricalcium silicate Nutrition 0.000 description 3
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 241001092391 Sorbus Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000008345 mountainash Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
Abstract
The present invention provides a kind of concrete based on hydration heat of concrete to stir moisture control system, including adding water solenoid valve, thermal resistance and temperature transmitter；Described plus water solenoid valve is arranged on the filler pipe road of priming apparatus, the thermal resistance is arranged in the middle part of sliding channel of concrete mixing tank, the input terminal of water solenoid valve is added to be connected by the output terminal of solenoid valve control circuit and PLC, the output terminal of thermal resistance and the input terminal of temperature transmitter connect, and the output terminal of temperature transmitter and the input terminal of PLC connect；The present invention demarcates the aquation calorific value that hydration reaction generates according to the species of cement and the species of the concrete produced, and it is sent to PLC after by temperature transmitter being converted to temperature signal, when PLC judges that stirring temperature within the barrel reaches hydration reaction predetermined temperature, PLC sends signal of cutting off the water, and it is closed by solenoid valve control circuit control plus water solenoid valve, ensure that amount of water is accurate, i.e., W/C meets production requirement, prevents that the concrete produced is unqualified.
Description
Technical field
The present invention relates to concrete stirring production field more particularly to a kind of water for concrete mixer stirring production
Part control system.
Background technology
Moisture control is particularly important for building commerical ready-mixed concrete stirring production process, and W/C (ratio of mud, water/cement) is
The important parameter of concrete material proportioning, determines the intensity index of concrete, that is, determine concrete it is up-to-standard whether.
The various raw materials of concrete, the proportioning gathered materials are according to the calculative of production technology, according to calculated value weighing
After appropriate, mixer in operation is sequentially added by the order of coarse aggregate, fine aggregate, cement, finally plus water；Traditional coagulation
Native mixing control system includes host computer, switch board, mixer main motor, agitator with host computer communication connection
With input and output material control device, the host computer uses industrial computer, and host computer is used to send to switch board and control
Signal is integrated with PLC and the electricity for controlling mixer main motor, priming apparatus and input and output material control device in the switch board
Gas control element, switch board are used to control mixer main motor, priming apparatus and input and output material control by PLC and electric controling element
Device action processed；The input and output material control device include finished product discharge valve, product conveying belt, aggregate bin valve, gather materials conveyer belt and
Cement transportation band；Since the actual mixing cycle of mixer only has 5 minutes or so, it is accurate to detect concrete stirring production
Pigment humidity in the process changes, controls amount of water and add water process, is the key that ensure solidifying soil property amount.
In the above process, if subjected to weather or the source that gathers materials, storage and artificial control feeding quantity inaccuracy etc. because
The interference of element, the amount of water that will result directly in concrete whipping process is inaccurate, and then the concrete that this is caused to produce in batches
W/C and slump the index of workability of concrete (reflection) index of concrete change, seriously affect produced coagulation
The quality of soil, the concrete for even resulting in this batch are all unqualified.
The content of the invention
It is an object of the invention to provide a kind of concrete based on hydration heat of concrete to stir moisture control system, can
Amount of water in concrete whipping process is accurately controlled according to aquation calorific value, ensures that the W/C indexs of concrete meet production and need
Will, prevent that the concrete produced is unqualified.
To achieve these goals, the present invention uses following technical scheme：
A kind of concrete stirring moisture control system based on hydration heat of concrete, including host computer and upper meter
Switch board, mixer main motor, agitator, priming apparatus and the input and output material control device of calculation machine communication connection, the upper meter
Calculation machine uses industrial computer, and host computer is used to send control signal to switch board, be integrated in the switch board PLC and
For controlling the electric controling element of mixer main motor, priming apparatus and input and output material control device, switch board is used to pass through PLC
With electric controling element control mixer main motor, priming apparatus and the action of input and output material control device；The input and output material control dress
It puts including finished product discharge valve, product conveying belt, aggregate bin valve, gather materials conveyer belt and cement transportation band；Further include plus water solenoid valve,
Thermal resistance and temperature transmitter；Described plus water solenoid valve is arranged on the filler pipe road of priming apparatus, and the thermal resistance is arranged on
In the middle part of sliding channel of concrete mixing tank, the input terminal of water solenoid valve is added to connect by the output terminal of solenoid valve control circuit and PLC
It connects, the output terminal of thermal resistance and the input terminal of temperature transmitter connect, and the output terminal of temperature transmitter and the input terminal of PLC connect
It connects.
Stainless steel outer cover is further included, thermal resistance is arranged in stainless steel outer cover, and stainless steel outer cover is fixed on unloading for agitator
In the inner wall for expecting valve plate, and thermal resistance is concordant with the inner wall of the discharging valve plate of agitator.
The output terminal of thermal resistance is connected by the input terminal of two-wire system thermocouple compensating wire and temperature transmitter, temperature pick-up
The output terminal of device is connected by the input terminal of shielded signal line and PLC.
Further include display unit, the display unit uses display screen, the output terminal of PLC by display drive circuit with
The input terminal connection of display screen.
Beneficial effects of the present invention：
The present invention uses thermal resistance and the matched modes of PLC, and existing heat of hydration rule function is write PLC, according to
The species of cement and the species of the concrete produced demarcate the aquation calorific value that hydration reaction generates, and aquation calorific value is by warm
Electrical resistance collection, and PLC is sent to after being converted to temperature signal by temperature transmitter, when PLC judges that stirring temperature within the barrel reaches water
When changing reaction predetermined temperature, PLC sends signal of cutting off the water, and is closed by solenoid valve control circuit control plus water solenoid valve, ensures
Amount of water is accurate, i.e., W/C meets production requirement, prevents that the concrete produced is unqualified, and then ensure that production efficiency, also keeps away
Wastage of material is exempted from.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the principle of the present invention schematic diagram；
Fig. 3 is the heat of hydration/time history of the present invention；
Fig. 4 is the structure diagram of thermal resistance of the present invention and stainless steel outer cover；
Fig. 5 is the scheme of installation of thermal resistance of the present invention.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
As depicted in figs. 1 and 2：A kind of concrete stirring moisture control system based on hydration heat of concrete of the present invention
System, the switch board 2 communicated to connect including host computer 1, with host computer 1, mixer main motor, agitator 3 plus water dress
It puts and uses industrial computer with input and output material control device, the host computer 1, host computer 1 is used to send to switch board 2
Control signal is integrated with PLC in the switch board 2 and for controlling mixer main motor, priming apparatus and input and output material control dress
The electric controling element put, switch board 2 be used for by PLC and electric controling element control mixer main motor, priming apparatus and
Input and output material control device acts；The input and output material control device includes finished product discharge valve, product conveying belt, aggregate bin valve, gathers materials
Conveyer belt and cement transportation band；Wherein, communicated between host computer 1 and switch board 2 by Ethernet；Switch board 2
According to the electrical control member of the control signal control mixer main motor of host computer 1, priming apparatus and input and output material control device
Part action belongs to existing mature technology, and which is not described herein again.
A kind of concrete stirring moisture control system based on hydration heat of concrete of the present invention, further includes and adds water power
Magnet valve, thermal resistance 4 and temperature transmitter 5；Described plus water solenoid valve is arranged on the filler pipe road of priming apparatus, adds water solenoid valve
Input terminal by the output terminal of solenoid valve control circuit and PLC connect, water solenoid valve is added to be acted under the control of PLC, and then
Control adds the speed of water speed or whether adds water.
As shown in Figure 4 and Figure 5：Preferred embodiment is：A kind of concrete based on hydration heat of concrete of the present invention stirs
It mixes moisture control subsystem and further includes stainless steel outer cover 6, thermal resistance 4 is arranged in stainless steel outer cover 6, and stainless steel outer cover 6 is fixed on
In the inner wall of the discharging valve plate of agitator 3, and thermal resistance 4 is concordant with the inner wall of the discharging valve plate of agitator 3, in order to avoid thermal resistance 4
In whipping process because be subject to concrete abrasion and agitating vane shock due to damage；Meanwhile when by the conventional fixed cleaning of production
During agitator 3, moreover it is possible to clean thermal resistance 4 and stainless steel outer cover 6 together；In addition, also facilitate thermal resistance 4 replacement and
Maintenance work；Wherein, the output terminal of thermal resistance 4 is connected with the input terminal of temperature transmitter 5, the output terminal of temperature transmitter 5 with
The input terminal connection of PLC；Wherein, thermal resistance 4 is for the temperature signal of the heat of hydration in concrete mixer after acquisition plus water, temperature
Degree transmitter 5 is used for the temperature signal for gathering thermal resistance 4 by isolation enhanced processing, and is converted to and temperature line relationship
DC signal output to switch board 2；Temperature transmitter 5 can also make with system supports such as unit aggregated instrument and DCS, PLC
With giving field instrument signal isolation, signal conversion, signal distribution, signal processing etc., automatically controlled so as to improve production process
The antijamming capability of system ensures the stability and reliability of system；According to industry requirement, the output terminal of thermal resistance 4 passes through two
The even compensating wire of line heating is connected with the input terminal of temperature transmitter 5, the output terminal of temperature transmitter 5 by shielded signal line and
The input terminal connection of PLC.
Wherein, observed in order to facilitate staff, operation, display unit, the display are also integrated on the switch board 2
Unit uses display screen, and the output terminal of PLC is connected by the input terminal of display drive circuit and display screen；Further, root
According to existing automatic control technology, switch board 2 can also integrated switch button, indicator light etc., which is not described herein again.
When stirring moisture control system using a kind of concrete based on hydration heat of concrete of the present invention, first will
Water management program is added to write PLC；Water management program is added to utilize existing heat of hydration rule function setup, as described below：
Cement is inorganic material mixture, and four kinds of main ingredient of inorganic silicate and mineral therein are：Tricalcium silicate,
The composition of beta-dicalcium silicate, calcium aluminate and aluminium calcium ferrite, tricalcium silicate and beta-dicalcium silicate accounts for the 75% of cement gross weight；Work as water
After mud meets water mixing, hydration reaction occurs immediately, while generates heat；Different cement types, the unit aquation of every gram of cement
Calorific value is different；This is because：(1) concrete grade of different production batch is different, i.e. the dispensing proportioning of concrete is different, dispensing
Middle tricalcium silicate is different with the content of dicalcium silicate；(2) cement type, the place of production are different used by, the silicon in corresponding dispensing
Sour tricalcium and the content of dicalcium silicate also have difference；
The heat of hydration/time history as described in Figure 3, at the initial stage of hydration reaction, the release of the heat of hydration is in 5 minutes
Maximum is rapidly reached, drops to then and rapidly below 1K/ grams of hour；By research, researcher gives aquation thermal gauge
Restrain function (heat of hydration rule function is common knowledge, and which is not described herein again)：
T (t)=WQ (1-e-mt)/(C·ρ)；
Wherein, T is absolute temperature；W is the cement weight in every cube of concrete, unit Kg/m3；Q is every gram of cement
Hydration reaction aquation gross calorific value, unit J/Kg；Different cement types are such as：Portland cement, slag cements, fire
Mountain ash concrete, sulfate-resistant cement etc., Q values fluctuate between 300000~600000J/Kg, and corresponding Q values have very big difference；e
For the bottom of natural logrithm, e=2.718；M is empirical coefficient, related with cement type and environment temperature, wherein, m values 0.2~
Between 0.4；T is to add the water time；C is concrete specific heat, and unit is J/ (KgC °)；ρ is concrete density, unit Kg/m3；
Using above-mentioned heat of hydration rule function, W, Q and C value can determine according to used concrete species during production,
Above-mentioned logical relation is write into PLC (belonging to existing mature technology using logical relation for PLC programmings, which is not described herein again)；
In concrete stirs production process, by concrete production technology flow, start mixing plant, start to feed intake and stir
It mixes, and adds water mixing：In whipping process, mounted on the thermal resistance 4 of 3 inner wall of mixer agitator, it is anti-to collect concrete hydrating
At once the heat of hydration value signal discharged, and temperature signal in agitator 3 is converted to by temperature transmitter 5 and is sent to PLC；By water
Change thermal gauge rule function to understand：After the kind and dosage of cement determine, the thermogenetic temperature of aquation is only with adding water time (i.e. water
Change the reaction time) it is related, therefore when PLC judges in agitator 3 temperature close to hydration reaction predetermined temperature (the pre- constant temperature of hydration reaction
Degree determines that this determines which is not described herein again by concrete production standard by the concrete species produced) when, PLC is sent
Pre- signal of cutting off the water, and closed by the way that solenoid valve control circuit control plus water solenoid valve are intermittent, until PLC is judged in agitator 3
When temperature reaches hydration reaction predetermined temperature, PLC sends signal of cutting off the water, and passes through solenoid valve control circuit control plus water solenoid valve
It closes, a stirring production cycle terminates.
The present invention uses thermal resistance 4 and the matched modes of PLC, and existing heat of hydration rule function is write PLC, according to
The specification species of cement and the specification species of the concrete produced demarcate the aquation calorific value that hydration reaction generates, aquation
Calorific value is gathered by thermal resistance 4, and is sent to PLC after being converted to temperature signal by temperature transmitter 5, when PLC is judged in agitator 3
When temperature reaches hydration reaction predetermined temperature, PLC sends signal of cutting off the water, and passes through solenoid valve control circuit control plus water solenoid valve
It closes, ensures that amount of water is accurate, is i.e. ratio of mud W/C meets production requirement, prevents that the concrete produced is unqualified, and then ensures
Production efficiency, also avoids wastage of material.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (4)
1. a kind of concrete stirring moisture control system based on hydration heat of concrete, including host computer and upper calculating
Switch board, mixer main motor, agitator, priming apparatus and the input and output material control device of machine communication connection, the upper calculating
Machine uses industrial computer, and host computer is used to send control signal to switch board, and PLC and use are integrated in the switch board
In control mixer main motor, the electric controling element of priming apparatus and input and output material control device, switch board be used for through PLC and
Electric controling element control mixer main motor, priming apparatus and the action of input and output material control device；The input and output material control device
Including finished product discharge valve, product conveying belt, aggregate bin valve, gather materials conveyer belt and cement transportation band；It is characterized in that：It further includes and adds
Water solenoid valve, thermal resistance and temperature transmitter；Described plus water solenoid valve is arranged on the filler pipe road of priming apparatus, the thermoelectricity
Resistance is arranged in the middle part of sliding channel of concrete mixing tank, and the input terminal of water solenoid valve is added to pass through solenoid valve control circuit and PLC
Output terminal connects, and the input terminal of the output terminal of thermal resistance and temperature transmitter connects, and the output terminal of temperature transmitter and PLC's is defeated
Enter end connection.
2. a kind of concrete stirring moisture control system based on hydration heat of concrete according to claim 1, feature
It is：Stainless steel outer cover is further included, thermal resistance is arranged in stainless steel outer cover, and stainless steel outer cover is fixed on the discharge valve of agitator
In the inner wall of plate, and thermal resistance is concordant with the inner wall of the discharging valve plate of agitator.
3. a kind of concrete stirring moisture control system based on hydration heat of concrete according to claim 1, feature
It is：The output terminal of thermal resistance is connected by the input terminal of two-wire system thermocouple compensating wire and temperature transmitter, temperature transmitter
Output terminal pass through the input terminal of shielded signal line and PLC connect.
4. a kind of concrete stirring moisture control system based on hydration heat of concrete according to claim 1, feature
It is：Display unit is further included, the display unit uses display screen, and the output terminal of PLC by display drive circuit and is shown
The input terminal connection of display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047585.0A CN108081472B (en) | 2018-01-18 | 2018-01-18 | Concrete mixing water content control system based on concrete hydration heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047585.0A CN108081472B (en) | 2018-01-18 | 2018-01-18 | Concrete mixing water content control system based on concrete hydration heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108081472A true CN108081472A (en) | 2018-05-29 |
| CN108081472B CN108081472B (en) | 2024-04-16 |
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ID=62181667
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| Application Number | Title | Priority Date | Filing Date |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105599148A (en) * | 2015-12-28 | 2016-05-25 | 广西盛鸿混凝土有限公司 | Improved concrete production system |
| CN206601638U (en) * | 2017-03-22 | 2017-10-31 | 交通运输部公路科学研究所 | A kind of mass concrete active temperature control device |
| CN207808066U (en) * | 2018-01-18 | 2018-09-04 | 河南建筑材料研究设计院有限责任公司 | A kind of concrete stirring moisture control system based on hydration heat of concrete |
-
2018
- 2018-01-18 CN CN201810047585.0A patent/CN108081472B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105599148A (en) * | 2015-12-28 | 2016-05-25 | 广西盛鸿混凝土有限公司 | Improved concrete production system |
| CN206601638U (en) * | 2017-03-22 | 2017-10-31 | 交通运输部公路科学研究所 | A kind of mass concrete active temperature control device |
| CN207808066U (en) * | 2018-01-18 | 2018-09-04 | 河南建筑材料研究设计院有限责任公司 | A kind of concrete stirring moisture control system based on hydration heat of concrete |
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| Publication number | Publication date |
|---|---|
| CN108081472B (en) | 2024-04-16 |
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