CN111411785A - Concrete construction mold-entering temperature control system and temperature control method under high-temperature condition - Google Patents
Concrete construction mold-entering temperature control system and temperature control method under high-temperature condition Download PDFInfo
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- CN111411785A CN111411785A CN202010246161.4A CN202010246161A CN111411785A CN 111411785 A CN111411785 A CN 111411785A CN 202010246161 A CN202010246161 A CN 202010246161A CN 111411785 A CN111411785 A CN 111411785A
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- concrete
- stirring
- temperature control
- temperature
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/28—Safety or protective measures preventing damage to building parts or finishing work during construction against unfavourable weather influence
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- 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
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
- B28C7/0023—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust by heating or cooling
- B28C7/0038—Cooling, e.g. using ice
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- 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
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
Abstract
The invention relates to the technical field of building construction, in particular to a concrete construction in-mold temperature control system and a temperature control method under high temperature conditions, wherein sunshades are respectively arranged on a sand and stone storage bin for storing sand and stone materials and a transmission belt line for transporting the sand and stone materials, a water storage tank for storing stirring water is arranged underground, crushed ice prepared by an ice maker, the sand and stone materials, cement and the stirring water are put into a stirring station for stirring and mixing, a retarder is added during stirring, concrete is transported to a pouring point by a transportation tank car with a heat insulation layer arranged on a tank shell, and a pump pipe of a concrete pouring pump is coated with a heat insulation material, so that the concrete in-mold temperature can be ensured within 30 ℃ under the high temperature condition, the concrete strength and other indexes meet the requirements, the engineering can be smoothly carried out, the construction period is shortened, and the construction efficiency is improved, the construction cost is reduced.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a concrete construction mold-entering temperature control system and a temperature control method under a high-temperature condition.
Background
The world climate environment is different, the temperature in summer in some regions is as high as 40 ℃ and above, under the high-temperature climate environment condition, the construction of many places is avoided, concrete pouring is stopped, and then construction is carried out after the natural temperature is reduced, so that the construction period is prolonged undoubtedly, and the construction cost is increased; and sometimes, due to the reasons of construction period, performance cost and the like, construction must be continued in such a hot season, a large amount of concrete needs to be poured in the period, the concrete mold-entering temperature is required to be not higher than 30 ℃ during construction, and the natural temperature is far higher than 30 ℃, so that effective measures must be taken to control the mold-entering temperature of the concrete.
Therefore, how to effectively control the mold-entering temperature of concrete under high temperature conditions has become a direction of research for those skilled in the art.
Disclosure of Invention
Aiming at the existing problems, the invention discloses a concrete construction mold-entering temperature control system under a high-temperature condition, which comprises the following steps: the system comprises a sand and stone storage bin, a cement storage bin, a conveying belt line, a water storage tank, a stirring station, an ice maker, a transportation tank car and a pouring pump;
the sand and stone storage bin is used for storing sand and stone materials, and a sunshade is arranged at the top of the sand and stone storage bin;
the cement storage bin is used for storing cement;
the water storage tank is used for storing water for stirring, the water storage tank is located underground, and a mud layer with a preset thickness covers the top of the water storage tank;
the ice maker is used for preparing crushed ice;
the mixing station is used for mixing the sand and stone material, the cement, the mixing water and the crushed ice to form concrete;
the transmission belt line is respectively connected with the gravel storage bin and the stirring station so as to convey the gravel material to the stirring station, and a sunshade is arranged on the transmission belt line;
the transportation tank car is used for conveying the concrete to a pouring point, and a tank body shell of the transportation tank car is provided with a heat insulation layer;
the pouring pump is used for pouring the concrete, and a pump pipe of the pouring pump is coated with a heat-insulating material.
The temperature control system for concrete construction under the high-temperature condition is characterized in that the preset thickness is 500-1000 mm.
In the concrete construction temperature control system under the high-temperature condition, the side wall and the top of the water storage tank are both provided with the extruded sheets.
The concrete construction temperature control system under the high-temperature condition is characterized in that the heat insulation layer is made of cotton cloth.
The temperature control system for concrete construction under the high-temperature condition is characterized in that the high-temperature condition is that the outdoor temperature is higher than 40 degrees.
The temperature control system for concrete construction under high temperature conditions is characterized in that the temperature of the concrete formed by stirring in the stirring station is lower than 27 degrees.
The temperature control system for concrete construction under the high-temperature condition is characterized in that the distance between the mixing plant and the pouring point is less than or equal to 3 km.
The temperature control system for concrete construction under the high-temperature condition is characterized in that the sunshade is of a light steel structure.
The invention also discloses a concrete construction mold-entering temperature control method under the high-temperature condition, wherein based on the temperature control system, the temperature control method comprises the following steps:
step S1, cement in the cement storage bin is transported to the mixing station, and sand and stone materials in the sand and stone storage bin are transported to the mixing station by the aid of the transmission belt lines;
step S2, preparing crushed ice using the ice maker;
step S3, placing the gravel material, the cement and the stirring water into a stirring pool of a stirring station, and adding crushed ice into the stirring pool according to the temperature of the gravel material, the temperature of the cement, the temperature of the stirring water and the outdoor temperature;
step S4, stirring and mixing the sand and stone material, the cement, the stirring water and the crushed ice by using the stirring station to form concrete, and adding a retarder into the stirring pool during stirring;
step S5, transporting the concrete to the pouring point by using the transportation tank car within a first preset time;
and step S6, utilizing the pouring pump to carry out pouring construction of the concrete, and finishing the pouring construction of the concrete within second preset time.
The concrete construction mold-entering temperature control method under the high-temperature condition is characterized in that the sum of the first preset time and the second preset time is less than or equal to 1.5 hours.
The invention has the following advantages or beneficial effects:
the invention discloses a temperature control system and a temperature control method for concrete construction in a mold under high temperature condition, wherein sunshades are respectively arranged on a sand storage bin for storing sand and stone materials and a transmission belt line for transporting the sand and stone materials, a water storage tank for storing stirring water is arranged underground, crushed ice prepared by an ice maker, sand and stone materials, cement and stirring water are placed in a stirring station for stirring and mixing, adding retarder while stirring, transporting concrete to a pouring point by using a transportation tank car with a heat insulation layer arranged on a tank shell, coating a heat insulation material on a pump pipe of a concrete pouring pump, thereby ensuring that the mold-entering temperature of the concrete can be ensured within 30 ℃ under the high-temperature condition, the strength and other indexes of the concrete meet the requirements, the construction can be smoothly carried out, so that the construction period is shortened, the construction efficiency is improved, and the construction cost is reduced.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic structural diagram of a concrete construction in-mold temperature control system under high temperature conditions in an embodiment of the invention;
FIG. 2 is a flowchart of a concrete construction mold-entry temperature control method under high temperature conditions in the embodiment of the invention.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the present invention is not limited thereto.
The first embodiment is as follows:
as shown in fig. 1, the embodiment discloses a concrete construction mold-entering temperature control system under a high temperature condition, specifically, the temperature control system includes: the system comprises a sand and stone storage bin, a cement storage bin, a conveying belt line, a water storage tank, a stirring station, an ice maker, a transportation tank car and a pouring pump; the gravel storage bin is used for storing gravel materials, a sunshade is arranged at the top of the gravel storage bin to prevent direct irradiation of sunlight to cause the temperature of the gravel to rise, and the gravel materials can be cooled by sprinkling water if necessary; the cement storage bin is used for storing cement; the water storage tank is used for storing water for stirring, the water storage tank is buried underground, a muddy soil layer with the thickness of 500 mm-1000 mm (such as 500mm, 750mm, 800mm or 1000 mm) is covered on the top of the water storage tank so as to avoid temperature rise caused by direct sunlight, and extruded sheets are additionally arranged on the side wall and the top of the water storage tank so as to insulate heat; the ice maker is used for preparing crushed ice; the mixing plant is used for mixing and stirring the sand and stone material, the cement, the stirring water and the crushed ice to form concrete; the transmission belt line is respectively connected with the gravel storage bin and the stirring station so as to convey the gravel materials to the stirring station, and a sunshade is arranged on the transmission belt line so as to avoid the temperature rise of the gravel caused by direct sunlight; the transportation tank car is used for conveying concrete to a pouring point, and a cotton cloth is arranged on a shell of a tank body of the transportation tank car to serve as a heat insulation layer, so that the temperature of the concrete is prevented from being increased due to the fact that the atmospheric temperature quickly transfers heat to the concrete in the tank body; this pump of pouring is used for concreting, and the cladding has insulation material in order to insulate against heat on the pump line of pouring the pump, and then guarantees that the concrete reachs pours the operation face temperature and does not exceed standard requirement.
In an embodiment of the present invention, the high temperature condition is a condition in which the outdoor temperature is higher than 40 °.
In an embodiment of the invention, the temperature of the concrete formed by the mixing of the mixing station is less than 27 °.
In the embodiment of the invention, the distance between the mixing station and the pouring point is less than or equal to 3km, so that the transportation tank car does not need to spend much time on transporting the concrete from the mixing station to the pouring point, the influence of the atmospheric temperature on the concrete temperature is reduced as much as possible, and the concrete mold-entering temperature can meet the requirement.
In the embodiment of the invention, when the air temperature is higher than 40 ℃, ice blocks (which can be purchased from the outside) can be added into the stirring water in the water storage tank so as to control the underground water storage tank (the stirring water) at 0-3 ℃. (if the air temperature is lower than 40 ℃, the stirring water in the water storage tank does not need to be added with ice blocks)
In an embodiment of the present invention, the sunshade is of a light steel structure.
In an embodiment of the present invention, the casting pump is a ground pump.
Example two:
as shown in fig. 2, the present embodiment discloses a temperature control method for concrete construction in a mold under a high temperature condition, the temperature control method is based on the temperature control system in the first embodiment, and specifically, the temperature control method includes the following steps:
and step S1, conveying the cement in the cement storage bin to a mixing station, and conveying the sand and stone materials in the sand and stone storage bin to the mixing station by using a conveying belt line.
In step S2, crushed ice is prepared using an ice maker.
And step S3, placing the aggregate, the cement and the stirring water into a stirring pool of a stirring station, and adding a proper amount of crushed ice into the stirring pool according to the temperature of the aggregate, the temperature of the stirring water and the outdoor temperature so as to ensure that the temperature of the subsequently formed concrete is within a control range.
Specifically, the statistics of C35 concrete with slump of 150mm-210mm as an example and crushed ice are shown in the following table:
column: in the table, the outlet concrete temperature and slump are the average values of sampling actual measurement
And step S4, stirring and mixing the sand and stone material, the cement, the stirring water and the crushed ice by using a stirring station to form concrete, and adding a retarder into the stirring tank during stirring to control the initial setting time of the concrete to be 6-8 hours (for example, 6 hours, 7 hours, 7.5 hours or 8 hours).
Specifically, in order to meet the requirement that the concrete mold-entering temperature is not higher than 30 ℃, the temperature of the concrete after being stirred in the mixing plant needs to be controlled within 27 ℃.
Step S5, transporting the concrete to a pouring point by using a transporting tank car within first preset time; specifically, the on-site transportation distance does not exceed 3km, and the first preset time does not exceed 30 minutes.
It should be noted that, in order to ensure that the time from the completion of the mixing to the completion of the pouring of the concrete does not exceed a set time, the concrete for the pouring point needs to be in contact with the mixing table in time, and the concrete needs to be poured in time after being transported to the site.
And step S6, utilizing the pouring pump to pour the concrete, and finishing the pouring of the concrete within a second preset time.
Specifically, the sum of the first predetermined time and the second predetermined time is less than or equal to 1.5 hours, that is, the time from the completion of the stirring to the completion of the pouring of the concrete is not more than 1.5 hours.
It should be understood that this embodiment is a method embodiment corresponding to the embodiment of the temperature control system for concrete construction under high temperature conditions, and this embodiment can be implemented in cooperation with the embodiment of the temperature control system for concrete construction under high temperature conditions. The relevant technical details mentioned in the above embodiment of the concrete construction in-mold temperature control system under high temperature condition are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the details of the related art mentioned in the present embodiment can also be applied to the embodiment of the concrete construction mold-entering temperature control system under the high temperature condition.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention and are not described herein.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. The utility model provides a concrete construction is gone into mould temperature control system under high temperature condition which characterized in that includes: the system comprises a sand and stone storage bin, a cement storage bin, a conveying belt line, a water storage tank, a stirring station, an ice maker, a transportation tank car and a pouring pump;
the sand and stone storage bin is used for storing sand and stone materials, and a sunshade is arranged at the top of the sand and stone storage bin;
the cement storage bin is used for storing cement;
the water storage tank is used for storing water for stirring, the water storage tank is located underground, and a mud layer with a preset thickness covers the top of the water storage tank;
the ice maker is used for preparing crushed ice;
the mixing station is used for mixing the sand and stone material, the cement, the mixing water and the crushed ice to form concrete;
the transmission belt line is respectively connected with the gravel storage bin and the stirring station so as to convey the gravel material to the stirring station, and a sunshade is arranged on the transmission belt line;
the transportation tank car is used for conveying the concrete to a pouring point, and a tank body shell of the transportation tank car is provided with a heat insulation layer;
the pouring pump is used for pouring the concrete, and a pump pipe of the pouring pump is coated with a heat-insulating material.
2. The temperature control system for concrete construction under high temperature conditions according to claim 1, wherein the predetermined thickness is 500 to 1000 mm.
3. The temperature control system for concrete construction under high temperature conditions according to claim 1, wherein the side walls and the top of the water storage tank are provided with extruded plates.
4. The temperature control system for concrete construction under high temperature conditions according to claim 1, wherein the heat insulation layer is cotton cloth.
5. The temperature control system for concrete construction under high temperature conditions according to claim 1, wherein the high temperature conditions are conditions in which outdoor temperature is higher than 40 °.
6. The system of claim 1, wherein the temperature of the concrete formed by the mixing station is less than 27 °.
7. The temperature control system for concrete construction under high temperature conditions according to claim 1, wherein the distance from the mixing plant to the casting point is less than or equal to 3 km.
8. The temperature control system for concrete construction under high temperature conditions of claim 1, wherein said sunshade is of light steel construction.
9. A concrete construction mold-entering temperature control method under a high-temperature condition is characterized in that based on the temperature control system of any one of claims 1-8, the temperature control method comprises the following steps:
step S1, cement in the cement storage bin is transported to the mixing station, and sand and stone materials in the sand and stone storage bin are transported to the mixing station by the aid of the transmission belt lines;
step S2, preparing crushed ice using the ice maker;
step S3, placing the gravel material, the cement and the stirring water into a stirring pool of a stirring station, and adding crushed ice into the stirring pool according to the temperature of the gravel material, the temperature of the cement, the temperature of the stirring water and the outdoor temperature;
step S4, stirring and mixing the sand and stone material, the cement, the stirring water and the crushed ice by using the stirring station to form concrete, and adding a retarder into the stirring pool during stirring;
step S5, transporting the concrete to the pouring point by using the transportation tank car within a first preset time;
and step S6, utilizing the pouring pump to carry out pouring construction of the concrete, and finishing the pouring construction of the concrete within second preset time.
10. The method for controlling the temperature of a concrete mold under high temperature conditions according to claim 9, wherein the sum of the first predetermined time and the second predetermined time is less than or equal to 1.5 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246161.4A CN111411785A (en) | 2020-03-31 | 2020-03-31 | Concrete construction mold-entering temperature control system and temperature control method under high-temperature condition |
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| CN202010246161.4A CN111411785A (en) | 2020-03-31 | 2020-03-31 | Concrete construction mold-entering temperature control system and temperature control method under high-temperature condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022047404A1 (en) * | 2020-08-31 | 2022-03-03 | Nitrocrete Ip, Llc | System and method for controlling a concrete mixture based on estimated concrete properties |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635244A (en) * | 2012-01-12 | 2012-08-15 | 中国十七冶集团有限公司 | Construction method of slide mould under high-temperature environment |
| CN103676997A (en) * | 2013-10-16 | 2014-03-26 | 中国水利水电科学研究院 | Large-volume concrete temperature monitoring method based on real-time monitoring data |
| CN203697257U (en) * | 2013-11-29 | 2014-07-09 | 中交第二航务工程局有限公司 | Novel concrete pouring temperature control system |
| CN106082818A (en) * | 2016-06-15 | 2016-11-09 | 江苏燕宁建设工程有限公司 | Concrete and making, construction method |
| CN110670592A (en) * | 2019-09-24 | 2020-01-10 | 中国水利水电第五工程局有限公司 | Construction method for large-volume pumping concrete under high-temperature condition |
-
2020
- 2020-03-31 CN CN202010246161.4A patent/CN111411785A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635244A (en) * | 2012-01-12 | 2012-08-15 | 中国十七冶集团有限公司 | Construction method of slide mould under high-temperature environment |
| CN103676997A (en) * | 2013-10-16 | 2014-03-26 | 中国水利水电科学研究院 | Large-volume concrete temperature monitoring method based on real-time monitoring data |
| CN203697257U (en) * | 2013-11-29 | 2014-07-09 | 中交第二航务工程局有限公司 | Novel concrete pouring temperature control system |
| CN106082818A (en) * | 2016-06-15 | 2016-11-09 | 江苏燕宁建设工程有限公司 | Concrete and making, construction method |
| CN110670592A (en) * | 2019-09-24 | 2020-01-10 | 中国水利水电第五工程局有限公司 | Construction method for large-volume pumping concrete under high-temperature condition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022047404A1 (en) * | 2020-08-31 | 2022-03-03 | Nitrocrete Ip, Llc | System and method for controlling a concrete mixture based on estimated concrete properties |
| US11541572B2 (en) | 2020-08-31 | 2023-01-03 | Nitrocrete Llc | System and method for controlling a concrete mixture based on estimated concrete properties |
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