CN109339473B - Device and method for preventing concrete from cracking based on water circulation micro-seepage effect - Google Patents
Device and method for preventing concrete from cracking based on water circulation micro-seepage effect Download PDFInfo
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- CN109339473B CN109339473B CN201811369067.7A CN201811369067A CN109339473B CN 109339473 B CN109339473 B CN 109339473B CN 201811369067 A CN201811369067 A CN 201811369067A CN 109339473 B CN109339473 B CN 109339473B
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Abstract
The invention discloses a device and a method for preventing concrete from cracking based on water circulation micro-seepage effect. The device sets up on the concrete structure that needs prevent concrete fracture, includes: the pumping system is arranged outside the concrete structure and is used for injecting water into the concrete structure; the water seepage system is arranged inside the concrete structure and is used for micro seepage of water; and the connecting conduit is used for connecting the water pumping system and the water seepage system. The method comprises the following steps: the water pumping system pumps water to a water seepage system in the concrete structure through a connecting pipe, and the inner space of the concrete structure is filled with hot water and sealed and is connected with a water tank of an external water pumping system; the water in the water seepage system seeps outwards under the action of pressure, so that the outer surface of the concrete structure is always kept in a moist environment, and cracks are prevented from being generated on the surfaces of beam, plate and column structures of the house building from the source. The invention prevents the surface of the concrete structure from cracking from the source, improves the durability and is particularly suitable for plateau areas.
Description
Technical Field
The invention belongs to the field of concrete building construction, and particularly relates to a device and a method for preventing concrete from cracking based on water circulation micro-seepage effect, which are suitable for preventing cracks from appearing on the concrete surface of a plateau area.
Background
Concrete cracks are one of the common diseases of concrete structures, and the generation reasons are diverse. The damage degree of the cracks to the concrete buildings is different. For the large-volume concrete of a factory building constructed in an plateau area, due to the dry climate in the plateau area, the wind is strong, the sunshine in the daytime is very strong, and the annual average evaporation capacity for many years is 2075.2 mm. Under the natural environment, after concrete is poured, the water on the surface is quickly dispersed, the volume shrinkage is large, the internal humidity change is small, the volume shrinkage is small, the surface deformation can be restrained by the internal concrete, the tensile stress is formed, and the cracking of the concrete is easily caused. The same magnitude of temperature change may result in surface cracks only in the interior, and through cracks in plateau regions. Therefore, attention must be paid to this and measures must be taken to solve it.
The existing measures for controlling the cracks are mainly to fill materials in the cracks to control the further development of the cracks. However, due to high altitude in plateau areas, large temperature difference between day and night, less rain and dryness, and the annual average temperature of most plateau areas below 0 ℃, the severe environment easily causes that materials used for repairing cannot be cured normally, the strength of the repairing materials cannot be improved normally, and meanwhile, the fluidity of the materials is reduced in the low-temperature environment, so that the construction efficiency is influenced. Due to the harsh natural environment, the cost of the repair material is expensive, and the commonly used repair technology has certain limitations and cannot achieve the intended repair purpose. More importantly, most control measures do not start from improving the water content of the surface, but passively repair after cracks are generated on the concrete surface, and the effect of treating both symptoms and root causes is not achieved.
Disclosure of Invention
The invention aims to solve the technical problem that the device and the method for preventing concrete from cracking based on the water circulation micro-seepage function are provided aiming at the defects of the existing concrete crack control, so that the surface of concrete structures such as beams, plates, columns and the like of building buildings in plateau areas is prevented from cracking fundamentally, any grouting material for repairing cracks is not needed, the durability is improved, and the device and the method are particularly suitable for building buildings in plateau areas.
The technical scheme adopted by the invention for solving the technical problems is as follows:
device that prevents concrete cracking based on hydrologic cycle micro-seepage effect sets up on the concrete structure that needs prevent concrete cracking, includes:
the pumping system is arranged outside the concrete structure and is used for injecting water into the concrete structure;
the water seepage system is arranged inside the concrete structure and is used for micro seepage of water;
the connecting conduit is used for connecting the water pumping system and the water seepage system;
the concrete structure is a beam, a plate and a column (used for bearing a house) of the house which is directly irradiated by sunlight and easy to crack, the beam mainly refers to the beam of the house exposed outside, the plate mainly refers to a floor slab of a roof seriously irradiated by the sunlight, and the column mainly refers to columns at four corners of the house and columns exposed outside; the cross section rectangle of the beam is divided into four same small rectangles, 4 main guide pipes of the beam water seepage system are arranged along the length direction of the beam and are respectively arranged at the center of each rectangle, a plurality of secondary guide pipes vertical to the main guide pipes are arranged around the cross section of each main guide pipe, the secondary guide pipes are distributed at equal intervals in the length direction of the main guide pipes and distributed at equal angles in the cross section direction of the main guide pipes, the connecting parts of the secondary guide pipes and the main guide pipes are circular, and the circular cross section area of the secondary guide pipes is gradually reduced towards the direction extending to concrete;
the water pumping system mainly comprises a water tank, a solar cell panel and a water pump, wherein the water tank is fixed at a high position relative to the concrete structure; the water pump is respectively connected with the solar cell panel and the water tank;
the infiltration system includes the infiltration system of roof beam, board and the infiltration system of post, and each infiltration system all is including setting up the pipe at the concrete structure inner wall and attached to the outer one deck single face permeable membrane of pipe, the pipe includes main duct and the inferior pipe of being connected with main duct, and the outside of main duct and inferior pipe all is equipped with a plurality of aperture of permeating water, and the aperture of permeating water provides the passageway for the outside transmission of water in the pipe, and the single face permeable membrane makes water only from in the pipe toward outside concrete structure infiltration, and the water in the concrete structure is not toward the intraductal infiltration of pipe.
According to the above scheme, the cross-section of board is divided into two or many along width direction equalling, divide into two or a plurality of the same little rectangles with the whole projected area of board, and the portion of the main duct of the infiltration system of board is decided according to the rectangle number of board equalling, and the main duct is arranged along the length direction of board, and the main duct arranges respectively in the positive center of every little rectangle, around the main duct respectively symmetrical arrangement a plurality of and main duct vertically secondary ducts, the equidistant interval distribution of length direction of secondary duct along the main duct, and the connecting portion of secondary duct and main duct divide into circularly, and to the direction that the concrete extends, the circle sectional area of secondary duct reduces gradually.
According to the above scheme, the cross section rectangle of post divide into four the same little rectangles, and the main duct of the infiltration system of post is 4, arranges and arranges respectively in the positive center of every rectangle along the direction of height of post, has arranged a plurality ofly around the cross-section of every main duct and has managed vertically inferior pipe with the main duct, inferior pipe distributes at the length direction equidistance of main duct, in the equal angular distribution of the cross section direction of main duct, inferior pipe is circular with the connecting portion of main duct, toward the direction that the concrete extends, the circle sectional area of inferior pipe reduces gradually.
According to the scheme, the upper part of the connecting conduit is connected with a sewer pipe at the lower part of the water tank, the lower part of the connecting conduit extends into the concrete structure and is connected with a water seepage system in the concrete structure, a heat-resistant rubber pipe is arranged outside the connecting conduit, and a protective film is coated on the rubber pipe or is built in a wall.
The invention also provides a method for preventing concrete cracking based on water circulation micro-seepage effect, which comprises the following steps:
1) setting a water seepage system in a reserved space inside a beam, plate and column concrete structure of a house, hanging a pumping system at the upper part of the house outside the concrete structure, and connecting the pumping system and the water seepage system through a connecting conduit;
2) the water pumping system pumps water to a water seepage system in the concrete structure through a connecting conduit (the water seepage system is of a porous structure, and the water seeps outwards under the action of pressure), and the inner space of the concrete structure is filled with hot water and sealed and is connected with a water tank of an external water pumping system;
3) the water in the water seepage system seeps outwards under the action of pressure, so that the outer surface of the concrete structure is always kept in a moist environment, and cracks are prevented from being generated on the surfaces of beam, plate and column structures of the house building from the source.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is started aiming at the generation reason of concrete cracks, the water tank is positioned at the high position, the internal water pressure is increased, so that the water positioned in the guide pipe flows into the beam, plate, column and other concrete structures of a house, and the water flows downwards along with the water at the upper part to drive the water in the water seepage system in the concrete structure to permeate to the outside of the concrete structure through the single-sided permeable membrane outside the guide pipe, so that the circulation of the water pressure in the concrete and the external water pressure is always kept, the concrete structure is in a micro-humid environment due to water balance, the surface cracks of the beam, plate, column and other concrete structures of the building in the plateau area are prevented from cracking fundamentally, no grouting material for repairing the cracks is needed, the durability is improved, and the invention is particularly suitable for the building;
2. because water continuously permeates outwards in the concrete structure, external carbon dioxide is prevented from entering the concrete structure through gaps and reacting with hydrate of the concrete structure to destroy the strength of the concrete;
3. because of the existence of the water flow velocity, the diffusion speed and the diffusion depth of harmful substances on the surface of the concrete structure into the concrete are reduced, namely a layer of protective film is added on the surface of the concrete structure, and the water flow velocity control method has a positive effect on prolonging the service life of the concrete;
4. the water tank for manufacturing the water head is arranged at the high position of the house, so that the solar energy in plateau areas can be fully utilized to heat the water in the water tank, and the hot water as a material is relatively easy to obtain local materials, low in price and natural and environment-friendly; solar energy can also be used for generating power for a water pump of a water pumping system to work.
Drawings
FIG. 1 is a schematic structural diagram of a concrete cracking prevention device based on water circulation micro-infiltration according to the present invention;
FIG. 2 is a schematic view showing the internal arrangement of the primary and secondary ducts of the water infiltration system of the apparatus for preventing concrete cracks according to the present invention;
FIG. 3 is a schematic view showing the arrangement of the cross section of the beam of the apparatus for preventing concrete cracks according to the present invention;
FIG. 4 is a schematic arrangement of a longitudinal section of a beam of the apparatus for preventing concrete cracks according to the present invention;
FIG. 5 is a schematic arrangement of a cross section of a plate of the apparatus for preventing concrete cracks of the present invention;
FIG. 6 is a schematic arrangement of a longitudinal section of a plate of the apparatus for preventing concrete cracks of the present invention;
FIG. 7 is a schematic view showing the arrangement of the cross section of the column of the apparatus for preventing concrete cracks according to the present invention;
FIG. 8 is a schematic arrangement of a longitudinal section of a column of the apparatus for preventing concrete cracks of the present invention;
FIG. 9 is a schematic view of the connection between the external water pumping system and the internal water seepage system of the device for preventing the cracking of the beam and the slab of the present invention;
FIG. 10 is a schematic view of the connection between the external water pumping system and the internal water seepage system of the device for preventing the cracking of the columns according to the present invention;
fig. 11 is a schematic view showing the overall arrangement of the device for preventing concrete cracks according to the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments. Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a schematic structural view of the concrete cracking prevention device based on water circulation micro-seepage effect of the present invention, which is disposed on a concrete structure 10 to be prevented from concrete cracking, wherein the concrete structure is a beam 1, a plate 2 and a column 3 (for bearing of a house) of the house which is directly irradiated by sunlight and is easy to crack, the beam 1 mainly refers to a beam of the house which is exposed to the outside, the plate 2 mainly refers to a floor of a roof which is seriously irradiated by sunlight, and the column 3 mainly refers to columns at four corners of the house and columns which are exposed to the outside.
The device comprises:
the pumping system is arranged outside the concrete structure 10 and used for injecting water into the concrete structure 10, and mainly comprises a water tank 4, a solar cell panel 5 and a water pump 6, wherein the water tank 4 is fixed at a high position relative to the concrete structure; the solar cell panel 5 is arranged at the upper part of the water tank 4 (due to the fact that the sunshine is sufficient in the northwest region and the plateau region, the solar energy resources are rich, and the water in the water tank 4 can be heated by solar energy), and the water pump 6 is respectively connected with the solar cell panel 5 and the water tank 4;
the water seepage system is arranged in the concrete structure 10 and used for micro seepage of water, the water seepage system comprises a beam water seepage system, a column water seepage system and a plate water seepage system, each water seepage system comprises a conduit arranged on the inner wall of the concrete structure and a layer of single-sided water-permeable membrane 8 attached to the outside of the conduit, as shown in figure 2, the conduit comprises a main conduit 71 and a secondary conduit 72 connected with the main conduit 71, a plurality of water-permeable pores 73 are arranged outside the main conduit 71 and the secondary conduit 72, the water-permeable pores 73 provide channels for the external transmission of the water in the conduit, and the single-sided water-permeable membrane 8 ensures that the water only permeates from the inside of the conduit to the outside concrete structure, but the water of the concrete structure does not permeate into the conduit; the main duct 71 and the secondary duct 72 are both made of cylindrical hard materials with strong durability, and the arrangement of the main duct 71 and the secondary duct 72 does not contact the steel bars in the concrete structure;
and the connecting conduit 9 is used for connecting the water pumping system and the water seepage system.
Prevent that concrete fracture device's outside hydrologic cycle structure mainly includes two parts, is water tank 4 and connecting tube 9 respectively, in order to prevent that each season of plateau region night leads to freezing of water because the decline of temperature, water pump 6 also can be installed to water tank 4, decides whether take out water to the concrete according to the actual temperature condition, can also look external environment's particular case for the use of drawing water when the inside water of water tank 4 is not enough. The solar cell panel 5 is arranged on the upper portion of the water tank 4, the sunlight is sufficient in plateau areas, solar energy resources are rich, water in the water tank can be heated by solar energy, the water tank 4 needs to be fixed at a high position relative to a concrete structure, a high water head can be kept, the water pressure in the concrete structure is enough, hot water can continuously seep from the middle of the water tank to the outside of the concrete structure, and the outer surface of the concrete structure is kept moist. Connecting tube 9 connects water tank 4 on upper portion and the concrete structure of lower part, the downcomer of connecting tube 9 top connection water tank 4 lower part, the below stretches into in the concrete structure and with the inside infiltration headtotail of concrete structure, 9 outsides of connecting tube set up the rubber tube of heat-resistant type, the rubber tube needs to have certain durability, can scribble the protection film on the rubber tube facing comparatively harsh natural environment, perhaps step the rubber tube in the wall, avoid directly exposing among the outside bad border, the life-span of extension rubber tube. The connecting ducts are made of a hard material and are thickened by rubber tubes, on the one hand for plasticity, so that the ducts at both ends are fixed at the joint, and on the other hand to increase the corrosion resistance of the connecting portions, because the connecting boundary portions are more corrosive.
Fig. 3 and 4 are schematic layout views of a cross section and a longitudinal section of a beam 1 of the device for preventing concrete cracking according to the present invention, the rectangular cross section of the beam is divided into four identical small rectangles, 4 main ducts 71 of a water seepage system of the beam are arranged along the length direction of the beam and are respectively arranged in the center of each rectangle, a plurality of secondary ducts 72 perpendicular to the main ducts 71 are arranged around the circular section of each main duct 71, the secondary ducts 72 are equidistantly distributed in the length direction of the main duct 71 and are equiangularly distributed in the cross section direction of the main duct 71, the inner diameter of each secondary duct 72 is smaller than that of the main duct 71, the connecting portion of each secondary duct 72 and the main duct 71 is circular, and the circular section of each secondary duct 72 is gradually reduced in the direction extending toward the concrete 10.
Fig. 5 and 6 are schematic diagrams of the arrangement of the cross section and the longitudinal section of the plate 2 of the device for preventing concrete cracking according to the present invention, respectively, the width direction of the cross section area of the plate 2 is equally divided into two or more parts, the specific part is determined according to the width of the plate, the whole projection area of the plate 2 is divided into two or more same small rectangles, the part of the main duct 71 of the water seepage system of the plate is determined according to the number of the rectangles of the equal parts of the plate 2, the main duct 71 is arranged along the length direction of the plate, the main duct 71 is respectively arranged at the center of each small rectangle, a plurality of sub ducts 72 perpendicular to the main duct 71 are respectively symmetrically arranged around the main duct 71, the sub ducts 72 are equidistantly distributed along the length direction of the main duct 71, the size of the sub duct 72 is smaller relative to the main duct 71, the connection part of the sub duct 72 and the main duct 71 is circular, and extends towards the concrete 10, the circular cross-sectional area of the secondary duct 72 is gradually reduced, and the center line of the main duct 71 is in the same plane as that of the secondary duct 72.
Fig. 7 and 8 are schematic layout views of a cross section and a longitudinal section of a column 3 of the device for preventing concrete cracking according to the present invention, respectively, the cross section rectangle of the column 3 is divided into four identical small rectangles, 4 main ducts 71 of a water seepage system of the column are arranged along the height direction of the column 3 and are respectively arranged at the center of each rectangle, a plurality of sub ducts 72 perpendicular to the main ducts 71 are arranged around the cross section of each main duct 71, the sub ducts 72 are equidistantly distributed in the length direction of the main duct 71 and equiangularly distributed in the cross section direction of the main duct 71, the inner diameter of the sub ducts 72 is smaller than that of the main duct 71, the connection part of the sub ducts 72 and the main duct 71 is circular, and the circular cross section area of the sub ducts 72 is gradually reduced in the direction extending to the concrete 10.
Fig. 9 is a schematic view showing the connection between the external pumping system and the internal water seepage system of the device for preventing the beams 1 and the plates 2 from cracking, wherein a relatively hard downcomer 41 is arranged at the lower part of the water tank 4, the outer diameter of a main conduit 71 in the concrete of the beams 1 and the plates 2 is the same as the outer diameter of the downcomer 41 of the pumping system, and then the main conduit and the downcomer are connected by a hard connecting conduit 9, the inner diameter of the connecting conduit 9 is the same as the outer diameters of the connected main conduit 71 and the downcomer 41, the material of the connecting conduit 9 needs to be hard, and a heat-resistant rubber pipe is arranged outside the connecting conduit 9 to be thickened, so that the conduits at the two sides are fixed at the connection part for plasticity, and the corrosion resistance of the connection part is increased because the corrosion resistance of the connection boundary part is large, and the rubber pipe is coated with a protective film or.
Fig. 10 is a schematic view showing the connection of an external pumping system and an internal water seepage system of the device for preventing cracking of a column 3 according to the present invention, in which unlike the main pipes 71 of the beams 1 and 2, the main pipes 71 of the beams 1 and 2 have no corner, and the main pipes 71 in the column 3 have a corner, the connection of the inner pipes to the outer pipes of the column is made from the side of the column 3, the outer diameter of the main pipe 71 in the concrete of the column 3 is the same as the outer diameter of the down pipes 41 of the pumping system, and then they are connected by a rigid connecting pipe 9, the inner diameter of the connecting pipe 9 is the same as the outer diameters of the connected main pipe 71 and down pipes 41, the material of the connecting pipe 9 needs to be rigid, and a heat-resistant rubber pipe is also provided outside the connecting pipe 9 to be thickened.
Fig. 11 is a schematic view showing the overall arrangement of the device for preventing concrete cracking according to the present invention, the overall arrangement of the device being roughly: the water pump 6 and the water tank 4 on the upper part of the house are connected by a duct with strong durability to form a water pumping system, the water seepage system is arranged in the concrete structure, the water seepage system is connected with the water pumping system by a connecting duct 9, and particularly, the main duct 71 in the concrete of a beam, a plate and a column is connected with the sewer pipe 41 of the water pumping system by the connecting duct 9. In the case of beams, slabs and columns, the primary duct 71 and the secondary duct 72 have water-permeable pores 73 on their surfaces to provide a passage for water inside the ducts to pass in the direction of the concrete. A single-sided permeable membrane 8 (semi-permeable membrane) is added on the outer layers of the main conduit 71 and the secondary conduit 72, and on one hand, the single-sided permeable membrane 8 prevents external concrete 10 from entering the main conduit and the secondary conduit through the permeable pores 73 to block the conduits, and on the other hand, the single-sided permeable membrane is favorable for outward permeation of water and water circulation inside the concrete. The main duct 71 and the secondary duct 72 are both cylindrical rigid, strong and durable materials, and the arrangement of the main duct 71 and the secondary duct 72 does not contact the steel reinforcement inside the concrete structure.
The invention is not limited to the use as set forth in the description and the embodiments, but various corresponding modifications and variations will be apparent to those skilled in the art in light of the present invention, all falling within the scope of the appended claims.
Claims (5)
1. Device that prevents concrete cracking based on hydrologic cycle micro-seepage effect sets up on the concrete structure that needs prevent concrete cracking, its characterized in that includes:
the pumping system is arranged outside the concrete structure and is used for injecting water into the concrete structure;
the water seepage system is arranged inside the concrete structure and is used for micro seepage of water;
the connecting conduit is used for connecting the water pumping system and the water seepage system;
the concrete structure is a beam, a plate and a column of a house which are directly irradiated by sunlight and easy to crack, the beam mainly refers to the beam of the house exposed outside, the plate mainly refers to a floor slab of a roof seriously irradiated by the sunlight, and the column mainly refers to columns at four corners of the house and columns exposed outside; the cross section rectangle of the beam is divided into four same small rectangles, 4 main guide pipes of the beam water seepage system are arranged along the length direction of the beam and are respectively arranged at the center of each rectangle, a plurality of secondary guide pipes vertical to the main guide pipes are arranged around the cross section of each main guide pipe, the secondary guide pipes are distributed at equal intervals in the length direction of the main guide pipes and distributed at equal angles in the cross section direction of the main guide pipes, the connecting parts of the secondary guide pipes and the main guide pipes are circular, and the circular cross section area of the secondary guide pipes is gradually reduced towards the direction extending to concrete;
the water pumping system mainly comprises a water tank, a solar cell panel and a water pump, wherein the water tank is fixed at a high position relative to the concrete structure; the water pump is respectively connected with the solar cell panel and the water tank;
the infiltration system includes the infiltration system of roof beam, board and the infiltration system of post, and each infiltration system all is including setting up the pipe at the concrete structure inner wall and attached to the outer one deck single face permeable membrane of pipe, the pipe includes main duct and the inferior pipe of being connected with main duct, and the outside of main duct and inferior pipe all is equipped with a plurality of aperture of permeating water, and the aperture of permeating water provides the passageway for the outside transmission of water in the pipe, and the single face permeable membrane makes water only from in the pipe toward outside concrete structure infiltration, and the water in the concrete structure is not toward the intraductal infiltration of pipe.
2. The apparatus of claim 1, wherein the cross section of the slab is equally divided into two or more parts in the width direction, the whole projected area of the slab is divided into two or more identical small rectangles, the number of the main ducts of the water seepage system of the slab is determined according to the number of the equally divided rectangles of the slab, the main ducts are arranged along the length direction of the slab, the main ducts are respectively arranged at the center of each small rectangle, a plurality of sub ducts perpendicular to the main ducts are respectively and symmetrically arranged around the main duct, the sub ducts are equidistantly and intermittently distributed along the length direction of the main duct, the connecting portions of the sub ducts and the main duct are circular, and the circular cross-sectional area of the sub ducts is gradually reduced in the direction extending to the concrete.
3. The device for preventing concrete cracking based on water circulation micro-seepage effect of claim 1, wherein the cross section rectangle of the column is divided into four same small rectangles, the main conduits of the water seepage system of the column are 4, the main conduits are arranged along the height direction of the column and are respectively arranged in the center of each rectangle, a plurality of secondary conduits perpendicular to the main conduits are arranged around the cross section of each main conduit, the secondary conduits are equidistantly distributed in the length direction of the main conduit and are equiangularly distributed in the cross section direction of the main conduit, the connecting parts of the secondary conduits and the main conduit are circular, and the circular cross section area of the secondary conduits is gradually reduced along the direction of concrete extension.
4. The apparatus for preventing concrete cracks based on water circulation micro-infiltration according to claim 1, wherein the connecting conduit is connected with a sewer pipe at the lower part of the water tank at the upper part and is connected with a water infiltration system at the lower part extending into the concrete structure, a heat-resistant rubber pipe is arranged at the outer part of the connecting conduit, and the rubber pipe is coated with a protective film or is built in a wall.
5. The method for preventing the concrete from cracking by using the device for preventing the concrete from cracking based on the water circulation micro-seepage effect as claimed in any one of the claims 1 to 4, which is characterized by comprising the following steps:
1) setting a water seepage system in a reserved space inside a beam, plate and column concrete structure of a house, hanging a pumping system at the upper part of the house outside the concrete structure, and connecting the pumping system and the water seepage system through a connecting conduit;
2) the water pumping system pumps water to a water seepage system in the concrete structure through a connecting pipe, and the inner space of the concrete structure is filled with hot water and sealed and is connected with a water tank of an external water pumping system;
3) the water in the water seepage system seeps outwards under the action of pressure, so that the outer surface of the concrete structure is always kept in a moist environment, and cracks are prevented from being generated on the surfaces of beam, plate and column structures of the house building from the source.
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| CN103526761A (en) * | 2013-10-24 | 2014-01-22 | 中国一冶集团有限公司 | Large-sized concrete automatic temperature control and maintenance device and method |
| CN207377155U (en) * | 2017-10-24 | 2018-05-18 | 中国电建集团中南勘测设计研究院有限公司 | A kind of device for preventing concrete surface from cracking |
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| JPH11141128A (en) * | 1997-11-06 | 1999-05-25 | Shimizu Corp | Cracking prevention device of concrete structure |
| CN101672106B (en) * | 2009-08-11 | 2011-01-05 | 中国建筑第五工程局有限公司东莞分公司 | Construction method of temperature decrease and crack prevention of mass concrete by utilizing thin-walled corrugated pipe circulating water system |
| CN103526761A (en) * | 2013-10-24 | 2014-01-22 | 中国一冶集团有限公司 | Large-sized concrete automatic temperature control and maintenance device and method |
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