CN102528917A - Energy-saving environment friendly production method of concrete lining segment - Google Patents
Energy-saving environment friendly production method of concrete lining segment Download PDFInfo
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- CN102528917A CN102528917A CN2011103944980A CN201110394498A CN102528917A CN 102528917 A CN102528917 A CN 102528917A CN 2011103944980 A CN2011103944980 A CN 2011103944980A CN 201110394498 A CN201110394498 A CN 201110394498A CN 102528917 A CN102528917 A CN 102528917A
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Abstract
The invention discloses an energy-saving environment friendly production method of a concrete lining segment. The energy-saving environment friendly production method comprises the following step of: carrying out dry-wet-heat curing on concrete after pouring, wherein the dry-wet-heat curing is finished in a sealed curing kiln and comprises four stages of static curing, heating, constant temperature keeping and temperature reducing. According to the energy-saving environment friendly production method of the concrete lining segment, disclosed by the invention, all procedures are connected closely and smoothly, wherein the dry-wet-heat curing directly ensures large shortening of curing time because of creation of a technical method, and compared with a traditional steam curing of keeping the constant temperature for 4h and total curing time of 8-10h, the energy-saving environment friendly production method disclosed by the invention has the advantage that the speed is largely accelerated, in addition, standing temperature reduction ensures that segment concrete is secondarily cured and is fully reduced in temperature, thus a quality defect due to an inner stress is avoided, the quality of products is improved, and good support is provided for long-term safe usage of the concrete lining segment.
Description
Technical field
The invention belongs to concrete lining pipe piece prefabricating technique field, be specially a kind of concrete lining pipe piece energy-conserving and environment-protective production method.
Background technology
At present, domestic and international segment prefabricated technology mainly contains fixed die general laws and flow production line method.
The characteristics of fixed die general laws are: the die location relative fixed; Concreting employing crane gear is equipped with concrete hopper to carry out; Concrete adopts the shock club vibration compacting; After the moulding, add maintenance cover or maintenance lid and carry out steam curing; After the depanning of section of jurisdiction directly into the pond maintenance or the spray maintenance; Day production cycle 1-2 time.
The characteristics of flow production line method are: according to technological process, and each flow chart fixed-site; Mould is pressed beat regularly and is flowed on production line, form flow production line; Concreting adopts crane gear and concrete hopper to carry out; Concrete adopts bumper or shock club vibration compacting; After the moulding, add maintenance cover or maintenance lid or curing kilns and carry out steam curing; After the depanning of section of jurisdiction directly into the pond maintenance or the spray maintenance; Day production cycle 2-3 time.
Above-mentioned two kinds of modes of production exist following not enough:
(1) maintenance method of dual mode section of jurisdiction all is steam curing, and disperse steam in maintenance cover, lid or kiln heats the environment temperature in it, reaches the purpose of maintenance accelerate concrete gain in strength, and condensed water is many, and heat scatters and disappears fast.1. because condensed water is many, even condensed water is recycled, but it also absorbs heat and causes heat energy dissipation.2. because the high humidity in maintenance space is serious to the corrosion influence of mould, cause the shortening of die life.3. owing to be in big humidity and condensed water environment for a long time, the equipment in the maintenance space, sensor etc. are influenced by it, seriously shorten service life, and fault is frequent.4. use steam curing, in the maintenance space, because the steam ejiction opening is to adopt that " point mouthful " is arranged, caused local temperature higher, cause the concrete pipe sheet local temperature high and mass defect, the i.e. lack of uniformity of heating occur.5. use steam curing, condensing drip to the section of jurisdiction concrete surface in that the maintenance top of space forms causes the concrete surface out-of-flatness, influences the level and smooth required precision of section of jurisdiction profile.6. use steam curing, during like temperature drift, can not realize cooling in the maintenance space.7. use steam curing, the working environment high humidity, operating personnel's occupational health is affected.Steam curing process is ripe, applied range, and risk is little, though there are some defectives, satisfies the production needs.
(2) all supported at least 7 days directly into pond or shower water after the depanning of dual mode section of jurisdiction, flowing of water realizes that through motor there is leakage in curing water.
Owing to there is as above problem, two kinds of modes of production all exist energy consumption height, water resource waste, shortcomings such as noise is big, floor space is big, energy-conserving and environment-protective deficiency.
Summary of the invention
The technical problem that the present invention will solve is: to above-mentioned deficiency, a kind of concrete lining pipe piece production method of energy-conserving and environment-protective is provided.
The object of the invention realizes through following technical proposals:
A kind of concrete lining pipe piece energy-conserving and environment-protective production method is carried out dried hydrothermal curing after concreting, said dried hydrothermal curing is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage.
1, preferred as further, said dried hydrothermal curing process further is:
In the maintenance processes, humidity is not less than 80% in the curing kilns;
(1) rests
The time 2h that rests, 25 ℃-35 ℃ of environment temperatures;
(2) heat up
Heating-up time 1h, 10 ℃ of-15 ℃/h of programming rate;
(3) constant temperature
Constant temperature time 1.5h, 40 ℃-45 ℃ of environment temperatures, 50 ℃-55 ℃ of core temperature;
(4) cooling
Temperature fall time 1h, 15 ℃-20 ℃ of cooling rates;
2, preferred as further, said dried hydrothermal curing process further is: in the maintenance processes, humidity is 85% in the curing kilns,
(1) rests
The time 2h that rests, environment temperature is 30 ℃;
(2) heat up
Heating-up time 1h, 12 ℃/h of programming rate;
(3) constant temperature
Constant temperature time 1.5h, 45 ℃ of environment temperatures, 55 ℃ of core temperature;
(4) cooling
Temperature fall time 1h, 15 ℃ of-20 ℃/h of cooling rate.
3, preferred as further, described production method further is: the depanning in the section of jurisdiction is after row leaves standstill cooling.
4, preferred as further, describedly leave standstill cooling and further be:
The section of jurisdiction is left in the indoor maintenance pond, the maintenance pond is covered again, form an enclosure space, the secondary maintenance is carried out in the section of jurisdiction, fully lowers the temperature simultaneously; After 10-13 hour, after section of jurisdiction surface and the curing water temperature difference are less than 15 ℃, begin to inject the calcium hydroxide saturation water and carry out water and support, water was supported 7-8 days.
5, preferred as further, saidly leave standstill cooling and further be:
The section of jurisdiction is left in the indoor maintenance pond, the maintenance pond is covered again, form an enclosure space, the secondary maintenance is carried out in the section of jurisdiction, fully lowers the temperature simultaneously; After 12 hours, section of jurisdiction surface and the curing water temperature difference be less than after 15 ℃, begins to inject the calcium hydroxide saturation water and carry out water and support.
6, preferred as further, said method specifically comprises the steps:
(1) reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton;
(2) reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct;
(3) template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting testing tool to carry out installation quality in the back and detects;
(4) concreting
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the whole vibrations of the pneumatic bumper of frequency conversion are adopted in the vibrations of casting concrete limit, limit, vibrations, and vibrations time 5min is as the criterion with surperficial bleeding;
(5) dried hydrothermal curing
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage;
(6) depanning
The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond;
(7) leave standstill cooling
The section of jurisdiction two-layer mode of standing up of one-tenth places in the indoor no water curing pond and leaves standstill cooling through row;
(8) water curing
The calcium hydroxide saturation water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, the calcium hydroxide saturation water floods the section of jurisdiction fully, and water was supported 7-8 days;
(9) deposit the section of jurisdiction
The section of jurisdiction is vertical deposits, and shipping is dispatched from the factory behind natural curing time >=21 day.
7, preferred as further, said method specifically comprises the steps:
(1) reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton;
(2) reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct;
(3) template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting testing tool to carry out installation quality in the back and detects;
(4) concreting
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the whole vibrations of the pneumatic bumper of frequency conversion are adopted in the vibrations of casting concrete limit, limit, vibrations, and vibrations time 5min is as the criterion with surperficial bleeding;
(5) dried hydrothermal curing
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 80% in the curing kilns;
1. rest
The time 2h that rests, 25 ℃-35 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 10 ℃ of-15 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 40 ℃-45 ℃ of environment temperatures, 50 ℃-55 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 15 ℃-20 ℃ of cooling rates;
(6) depanning
The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond;
(7) leave standstill cooling
After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered the maintenance cloth with the permeability of preserving moisture, and accomplished cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 10-13h, and the surface, section of jurisdiction and the curing water temperature difference are less than 15 ℃;
(8) water curing
The calcium hydroxide saturation water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, the calcium hydroxide saturation water floods the section of jurisdiction fully, and water was supported 7-8 days;
(9) deposit the section of jurisdiction
The section of jurisdiction is vertical deposits, and shipping is dispatched from the factory behind natural curing time >=21 day.
8, preferred as further, said method specifically comprises the steps:
(1) reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton;
(2) reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct;
(3) template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting testing tool to carry out installation quality in the back and detects;
(4) concreting
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the whole vibrations of the pneumatic bumper of frequency conversion are adopted in the vibrations of casting concrete limit, limit, vibrations, and vibrations time 5min is as the criterion with surperficial bleeding;
(5) dried hydrothermal curing
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 85% in the curing kilns;
1. rest
The time 2h that rests, 30 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 12 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 42 ℃ of environment temperatures, 52 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 18 ℃/h of cooling rate;
(6) depanning
The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond;
(7) leave standstill cooling
The section of jurisdiction becomes the two-layer mode of standing up to place in the indoor no water curing pond; After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered the maintenance cloth with the permeability of preserving moisture, and forms an enclosure space; The secondary maintenance is carried out in the section of jurisdiction; Accomplish cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 12h, surface, section of jurisdiction and the curing water temperature difference are less than 15 ℃;
(8) water curing
The calcium hydroxide saturation water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, the calcium hydroxide saturation water floods the section of jurisdiction fully, and water was supported 7 days;
(9) deposit the section of jurisdiction
The section of jurisdiction is vertical deposits, natural curing after 21 days shipping dispatch from the factory.
Beneficial effect of the present invention: concrete edge is built the limit vibrations, vibrations time 5min, and rhythm is fast, shakes closely knit.Dried hydrothermal curing 5.5h accomplishes the preceding maintenance of section of jurisdiction depanning, and concrete strength is not less than 20MPa, energy-conserving and environment-protective.Quick, the convenient depanning of aerial upset vacuum cup, go into the pond.Be connected tight, smooth and easy between each operation, wherein dried hydrothermal curing because the innovation of process has directly caused the shortening greatly of curing time, more traditional steam curing constant temperature 4 hours, was accelerated speed in total curing time 8-10 hour greatly.And leave standstill cooling, and then let the section of jurisdiction concrete carry out the secondary maintenance, fully cooling avoids internal stress to cause mass defect, has improved product quality, has improved manufacturing technique method, provides powerful support for guaranteeing that the concrete pipe sheet long-term safety is used to provide.
The section of jurisdiction is after dried hydrothermal curing is accomplished, because the hydration reaction of cement is not accomplished in the concrete, concrete strength still is in quick build phase, still has the bigger temperature difference between concrete core temperature and the surface.Cause inside concrete stress damage and gain in strength slow for the heat that prevents hydration reaction scatters and disappears too fast, so the section of jurisdiction after the depanning can not directly be exposed to outdoorly fully, must leave standstill temperature-fall period through one.Traditional mode mainly is to satisfy concrete depanning requirement of strength, and the rule of development of concrete strength is ignored, and causes generation of defects such as inside concrete crackle.This method is after the depanning of section of jurisdiction, and the section of jurisdiction is left in the indoor maintenance pond, the maintenance pond is covered again, and forms an enclosure space, and the secondary maintenance is carried out in the section of jurisdiction, fully lowers the temperature simultaneously; After 12 hours, after curing water and the concrete surface temperature difference are less than 15 ℃, begin to inject the calcium hydroxide saturation water and carry out water and support.This method from the uniformity that improves maintenance space maintenance effect, realize promptly guaranteeing temperature guarantee humidity again, reduce water resource consumption, reduce fault that heat scatters and disappears, reduces electric elements and equipment and model service life take place, improve, improve the quality of products and improve operating personnel's working environment quality and consider, designed a kind of novel maintenance method-dried hydrothermal curing, this method utilization " warm a heatable brick bed " principle heats, heats up environment; Utilization " Saunas " principle is mended wet to environment; The utilization Water Cooling Technology is lowered the temperature to environment, and resultant effect is: concrete pipe sheet maintenance environmental condition is even, and concrete quality is even; Operating personnel's working environment quality is improved; Water resource expends few, and heat scatters and disappears few, satisfies section of jurisdiction quality of production requirement; The thermostatic curing time shortens 1.5h; More traditional steam curing 4h constant temperature, production efficiency improves greatly, reaches the effect of a circulation 360min.Dried hydrothermal curing of the present invention and original steam maintenance are two kinds of diverse methods, compare higher, the better effects if of using energy source of the present invention.
The specific embodiment
Following non-limiting examples is used to explain the present invention.
Embodiment 1
A kind of concrete lining pipe piece energy-conserving and environment-protective production method comprises the steps:
1, reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton, all adopts the full-automatic reinforcing bar process equipment to accomplish.CO is adopted in the framework of steel reinforcement welding
2Gas shielded arc welding, symmetry is jumped the means of spot welds method, and qualified framework of steel reinforcement must be carried out sign, classify and pile up, and the stacking number of plies is no more than 6 layers.
2, reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct.Framework of steel reinforcement protective layer cushion block should be quincunx interlaced arrangement; It is 4 every square metre that quantity is set; When skeleton is put into template, guarantee that reinforcing bar must not contact with template, between reinforcing bar or the bar-mat reinforcement; And and the metal embedded part of any vicinity between clear distance be not less than 25mm, and meet the demands with steel ruler inspection thickness of protection tier.
3, template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting special detection tool to carry out installation quality in the back and detects.Adopt specific purpose tool to tighten the template bolt to the two ends order, forbid anti-operation in tandem, in order to avoid cause die deformation from middle position.
Model installs, after the passed examination, and mounting reinforcing steel bars skeleton and accessory.Accessory is installed and must closely firmly, be shifted when guaranteeing to vibrate.
4, concreting
It is even that concrete is stirred to various material mixing, the full mortar of stone surface bag, and solid colour, functional.
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the vibrations of casting concrete limit, limit.The whole vibrations of the pneumatic bumper of frequency conversion, vibrations time 5min are adopted in vibrations.The concrete continuous blanking promptly shakes from the beginning blanking, discharges bubble, vibrations are closely knit.When building, the blanking personnel can be through the observation monitored picture, and control is grey speed and dreg discharge amount down, and observes the concrete shock conditions, and the process of building all realizes control room control.Shake closely knit be with: concrete surface stop to sink or not obvious, the concrete surface of sinking bubble no longer significantly take place or glowed mortar, enrich at position, template corner and have mortar to occur being as the criterion.
5, dried hydrothermal curing
Dried hydrothermal curing system: comprise that totally enclosed curing kilns, mould carry traveling rail, temperature control system.The walking of mould in curing kilns is the PLC automatic controlling system, and is divided into different zones according to maintenance processes.Set up the multichannel Temperature Humidity Sensor in the curing kilns, and feed back to the unlatching that central PLC control system regulates intensification, refrigeration, humidification magnetic valve.Each maintenance district Temperature and Humidity Control of production line; Through automatic temperature and humidity control system such as sequencing, magnetic valve, sensor; Automatically regulate curing temperature and humidity; And adopt the PLC automatic control system to collect the humiture parameter of concrete curing, guaranteed that the Temperature and Humidity Control of product overall process meets the requirements.
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 80% in the curing kilns;
1. rest
The time 2h that rests, 25 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 10 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 40 ℃ of environment temperatures, 50 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 15 ℃ of cooling rates;
6, depanning
Depanning order: unclamp the grout hole standing screw, open the die side template, open the mould end plate, depanning.Form removal method and requirement: turn on the connecting bolt of top board simultaneously with spanner, open top board after, again side form and all connectors of end mould are unclamped.In the section of jurisdiction during depanning, surface, section of jurisdiction and the indoor environment temperature difference differ be no more than 20 ℃ can depanning.The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond.
After the depanning, clean out template, and evenly spray special separating agent.
7, leave standstill cooling
The section of jurisdiction becomes the two-layer mode of standing up to place in the indoor no water curing pond, separates with the lumps of wood between layer and the layer, separates with " L " type block rubber between sheet and the sheet; After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered special-purpose maintenance cloth with the permeability of preserving moisture, and forms an enclosure space; The secondary maintenance is carried out in the section of jurisdiction; Accomplish cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 10h opens maintenance cloth afterwards; Naturally cooling 2h begins to inject the calcium hydroxide saturation water and carries out water and support after section of jurisdiction surface and the curing water temperature difference are less than 14 ℃.
8, water curing
Curing water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, it is dark that curing water floods section of jurisdiction 300mm fully, and water was supported 7 days.Water is supported the hydromining in pond and is used cycling use of water, in the maintenance water, adds calcium hydroxide, guarantees the environment that strength development needed when section of jurisdiction concrete water was supported.The water of supporting in the pond from 1-8 water recycles again and again, and environmental protection also reduces the waste of water resource.
The section of jurisdiction go into stand up in pond, the water and the lifting process in, insert " L " type block rubber between sheet and the sheet, prevent the section of jurisdiction damaged in collision.
9, deposit the section of jurisdiction
The section of jurisdiction is deposited and is carried out scribe area, subregion, cell management, adopts that turriform is joined ring, multilayer stands up mode, natural curing after 22 days shipping dispatch from the factory.
Embodiment 2
Second kind of concrete lining pipe piece energy-conserving and environment-protective production method comprises the steps:
1, reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton, all adopts the full-automatic reinforcing bar process equipment to accomplish.CO is adopted in the framework of steel reinforcement welding
2Gas shielded arc welding, symmetry is jumped the means of spot welds method, and qualified framework of steel reinforcement must be carried out sign, classify and pile up, and the stacking number of plies is no more than 6 layers.
2, reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct.Framework of steel reinforcement protective layer cushion block should be quincunx interlaced arrangement; It is 4 every square metre that quantity is set; When skeleton is put into template, guarantee that reinforcing bar must not contact with template, between reinforcing bar or the bar-mat reinforcement; And and the metal embedded part of any vicinity between clear distance be not less than 25mm, and meet the demands with steel ruler inspection thickness of protection tier.
3, template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting special detection tool to carry out installation quality in the back and detects.Adopt specific purpose tool to tighten the template bolt to the two ends order, forbid anti-operation in tandem, in order to avoid cause die deformation from middle position.
Model installs, after the passed examination, and mounting reinforcing steel bars skeleton and accessory.Accessory is installed and must closely firmly, be shifted when guaranteeing to vibrate.
4, concreting
It is even that concrete is stirred to various material mixing, the full mortar of stone surface bag, and solid colour, functional.
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the vibrations of casting concrete limit, limit.The whole vibrations of the pneumatic bumper of frequency conversion, vibrations time 5min are adopted in vibrations.The concrete continuous blanking promptly shakes from the beginning blanking, discharges bubble, vibrations are closely knit.When building, the blanking personnel can be through the observation monitored picture, and control is grey speed and dreg discharge amount down, and observes the concrete shock conditions, and the process of building all realizes control room control.Shake closely knit be with: concrete surface stop to sink or not obvious, the concrete surface of sinking bubble no longer significantly take place or glowed mortar, enrich at position, template corner and have mortar to occur being as the criterion.
5, dried hydrothermal curing
Dried hydrothermal curing system: comprise that totally enclosed curing kilns, mould carry traveling rail, temperature control system.The walking of mould in curing kilns is the PLC automatic controlling system, and is divided into different zones according to maintenance processes.Set up the multichannel Temperature Humidity Sensor in the curing kilns, and feed back to the unlatching that central PLC control system regulates intensification, refrigeration, humidification magnetic valve.Each maintenance district Temperature and Humidity Control of production line; Through automatic temperature and humidity control system such as sequencing, magnetic valve, sensor; Automatically regulate curing temperature and humidity; And adopt the PLC automatic control system to collect the humiture parameter of concrete curing, guaranteed that the Temperature and Humidity Control of product overall process meets the requirements.
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 80% in the curing kilns;
1. rest
The time 2h that rests, 35 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 15 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 45 ℃ of environment temperatures, 55 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 20 ℃ of cooling rates;
6, depanning
Depanning order: unclamp the grout hole standing screw, open the die side template, open the mould end plate, depanning.Form removal method and requirement: turn on the connecting bolt of top board simultaneously with spanner, open top board after, again side form and all connectors of end mould are unclamped.In the section of jurisdiction during depanning, surface, section of jurisdiction and the indoor environment temperature difference differ be no more than 20 ℃ can depanning.The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond.
After the depanning, clean out template, and evenly spray special separating agent.
7, leave standstill cooling
The section of jurisdiction becomes the two-layer mode of standing up to place in the indoor no water curing pond, separates with the lumps of wood between layer and the layer, separates with " L " type block rubber between sheet and the sheet; After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered special-purpose maintenance cloth with the permeability of preserving moisture, and forms an enclosure space; The secondary maintenance is carried out in the section of jurisdiction; Accomplish cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 13h opens maintenance cloth afterwards; Naturally cooling 2h begins to inject the calcium hydroxide saturation water and carries out water and support after section of jurisdiction surface and the curing water temperature difference are less than 14 ℃.
8, water curing
Curing water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, it is dark that curing water floods section of jurisdiction 300mm fully, and water was supported 8 days.Water is supported the hydromining in pond and is used cycling use of water, in the maintenance water, adds calcium hydroxide, guarantees the environment that strength development needed when section of jurisdiction concrete water was supported.The water of supporting in the pond from 1-8 water recycles again and again, and environmental protection also reduces the waste of water resource.
The section of jurisdiction go into stand up in pond, the water and the lifting process in, insert " L " type block rubber between sheet and the sheet, prevent the section of jurisdiction damaged in collision.
9, deposit the section of jurisdiction
The section of jurisdiction is deposited and is carried out scribe area, subregion, cell management, adopts that turriform is joined ring, multilayer stands up mode, natural curing after 23 days shipping dispatch from the factory.
Embodiment 3
The third concrete lining pipe piece energy-conserving and environment-protective production method comprises the steps:
1, reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton, all adopts the full-automatic reinforcing bar process equipment to accomplish.CO is adopted in the framework of steel reinforcement welding
2Gas shielded arc welding, symmetry is jumped the means of spot welds method, and qualified framework of steel reinforcement must be carried out sign, classify and pile up, and the stacking number of plies is no more than 6 layers.
2, reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct.Framework of steel reinforcement protective layer cushion block should be quincunx interlaced arrangement; It is 4 every square metre that quantity is set; When skeleton is put into template, guarantee that reinforcing bar must not contact with template, between reinforcing bar or the bar-mat reinforcement; And and the metal embedded part of any vicinity between clear distance be not less than 25mm, and meet the demands with steel ruler inspection thickness of protection tier.
3, template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting special detection tool to carry out installation quality in the back and detects.Adopt specific purpose tool to tighten the template bolt to the two ends order, forbid anti-operation in tandem, in order to avoid cause die deformation from middle position.
Model installs, after the passed examination, and mounting reinforcing steel bars skeleton and accessory.Accessory is installed and must closely firmly, be shifted when guaranteeing to vibrate.
4, concreting
It is even that concrete is stirred to various material mixing, the full mortar of stone surface bag, and solid colour, functional.
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the vibrations of casting concrete limit, limit.The whole vibrations of the pneumatic bumper of frequency conversion, vibrations time 5min are adopted in vibrations.The concrete continuous blanking promptly shakes from the beginning blanking, discharges bubble, vibrations are closely knit.When building, the blanking personnel can be through the observation monitored picture, and control is grey speed and dreg discharge amount down, and observes the concrete shock conditions, and the process of building all realizes control room control.Shake closely knit be with: concrete surface stop to sink or not obvious, the concrete surface of sinking bubble no longer significantly take place or glowed mortar, enrich at position, template corner and have mortar to occur being as the criterion.
5, dried hydrothermal curing
Dried hydrothermal curing system: comprise that totally enclosed curing kilns, mould carry traveling rail, temperature control system.The walking of mould in curing kilns is the PLC automatic controlling system, and is divided into different zones according to maintenance processes.Set up the multichannel Temperature Humidity Sensor in the curing kilns, and feed back to the unlatching that central PLC control system regulates intensification, refrigeration, humidification magnetic valve.Each maintenance district Temperature and Humidity Control of production line; Through automatic temperature and humidity control system such as sequencing, magnetic valve, sensor; Automatically regulate curing temperature and humidity; And adopt the PLC automatic control system to collect the humiture parameter of concrete curing, guaranteed that the Temperature and Humidity Control of product overall process meets the requirements.
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 85% in the curing kilns;
1. rest
The time 2h that rests, 30 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 12 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 42 ℃ of environment temperatures, 52 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 18 ℃ of cooling rates;
6, depanning
Depanning order: unclamp the grout hole standing screw, open the die side template, open the mould end plate, depanning.Form removal method and requirement: turn on the connecting bolt of top board simultaneously with spanner, open top board after, again side form and all connectors of end mould are unclamped.In the section of jurisdiction during depanning, surface, section of jurisdiction and the indoor environment temperature difference differ be no more than 20 ℃ can depanning.The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond.
After the depanning, clean out template, and evenly spray special separating agent.
7, leave standstill cooling
The section of jurisdiction becomes the two-layer mode of standing up to place in the indoor no water curing pond, separates with the lumps of wood between layer and the layer, separates with " L " type block rubber between sheet and the sheet; After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered special-purpose maintenance cloth with the permeability of preserving moisture, and forms an enclosure space; The secondary maintenance is carried out in the section of jurisdiction; Accomplish cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 12h opens maintenance cloth afterwards; Naturally cooling 2h begins to inject the calcium hydroxide saturation water and carries out water and support after section of jurisdiction surface and the curing water temperature difference are less than 15 ℃.
8, water curing
Curing water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, it is dark that curing water floods section of jurisdiction 300mm fully, and water was supported 7 days.Water is supported the hydromining in pond and is used cycling use of water, in the maintenance water, adds calcium hydroxide, guarantees the environment that strength development needed when section of jurisdiction concrete water was supported.The water of supporting in the pond from 1-8 water recycles again and again, and environmental protection also reduces the waste of water resource.
The section of jurisdiction go into stand up in pond, the water and the lifting process in, insert " L " type block rubber between sheet and the sheet, prevent the section of jurisdiction damaged in collision.
9, deposit the section of jurisdiction
The section of jurisdiction is deposited and is carried out scribe area, subregion, cell management, adopts that turriform is joined ring, multilayer stands up mode, natural curing after 21 days shipping dispatch from the factory.
Claims (9)
1. concrete lining pipe piece energy-conserving and environment-protective production method is characterized in that: after concreting, carry out dried hydrothermal curing, said dried hydrothermal curing is accomplished in the sealing curing kilns, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage.
2. production method as claimed in claim 1 is characterized in that: said dried hydrothermal curing process further is: in the maintenance processes, humidity is not less than 80% in the curing kilns;
(1) rests
The time 2h that rests, 25 ℃-35 ℃ of environment temperatures;
(2) heat up
Heating-up time 1h, 10 ℃ of-15 ℃/h of programming rate;
(3) constant temperature
Constant temperature time 1.5h, 40 ℃-45 ℃ of environment temperatures, 50 ℃-55 ℃ of core temperature;
(4) cooling
Temperature fall time 1h, 15 ℃-20 ℃ of cooling rates.
3. production method as claimed in claim 2 is characterized in that: said dried hydrothermal curing process further is: in the maintenance processes, humidity is 85% in the curing kilns,
(1) rests
The time 2h that rests, environment temperature is 30 ℃;
(2) heat up
Heating-up time 1h, 12 ℃/h of programming rate;
(3) constant temperature
Constant temperature time 1.5h, 45 ℃ of environment temperatures, 55 ℃ of core temperature;
(4) cooling
Temperature fall time 1h, 15 ℃ of-20 ℃/h of cooling rate.
4. like any described production method of claim 1 to 3, it is characterized in that: the depanning in the section of jurisdiction is after row leaves standstill cooling.
5. production method as claimed in claim 4 is characterized in that: saidly leave standstill cooling and further be:
The section of jurisdiction is left in the indoor maintenance pond, the maintenance pond is covered again, form an enclosure space, the secondary maintenance is carried out in the section of jurisdiction, fully lowers the temperature simultaneously; After 10-13 hour, after section of jurisdiction surface and the curing water temperature difference are less than 15 ℃, begin to inject the calcium hydroxide saturation water and carry out water and support, water was supported 7-8 days.
6. production method as claimed in claim 4 is characterized in that: saidly leave standstill cooling and further be:
The section of jurisdiction is left in the indoor maintenance pond, the maintenance pond is covered again, form an enclosure space, the secondary maintenance is carried out in the section of jurisdiction, fully lowers the temperature simultaneously; After 12 hours, section of jurisdiction surface and the curing water temperature difference be less than after 15 ℃, begins to inject the calcium hydroxide saturation water and carry out water and support.
7. production method as claimed in claim 1 is characterized in that comprising the steps:
(1) reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton;
(2) reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct;
(3) template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting testing tool to carry out installation quality in the back and detects;
(4) concreting
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the whole vibrations of the pneumatic bumper of frequency conversion are adopted in the vibrations of casting concrete limit, limit, vibrations, and vibrations time 5min is as the criterion with surperficial bleeding;
(5) dried hydrothermal curing
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage;
(6) depanning
The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond;
(7) leave standstill cooling
The section of jurisdiction two-layer mode of standing up of one-tenth places in the indoor no water curing pond and leaves standstill cooling through row;
(8) water curing
The calcium hydroxide saturation water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, the calcium hydroxide saturation water floods the section of jurisdiction fully, and water was supported 7-8 days;
(9) deposit the section of jurisdiction
The section of jurisdiction is vertical deposits, and shipping is dispatched from the factory behind natural curing time >=21 day.
8. production method as claimed in claim 7 is characterized in that comprising the steps:
(1) reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton;
(2) reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct;
(3) template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting testing tool to carry out installation quality in the back and detects;
(4) concreting
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the whole vibrations of the pneumatic bumper of frequency conversion are adopted in the vibrations of casting concrete limit, limit, vibrations, and vibrations time 5min is as the criterion with surperficial bleeding;
(5) dried hydrothermal curing
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 80% in the curing kilns;
1. rest
The time 2h that rests, 25 ℃-35 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 10 ℃ of-15 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 40 ℃-45 ℃ of environment temperatures, 50 ℃-55 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 15 ℃-20 ℃ of cooling rates;
(6) depanning
The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond;
(7) leave standstill cooling
After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered the maintenance cloth with the permeability of preserving moisture, and accomplished cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 10-13h, and the surface, section of jurisdiction and the curing water temperature difference are less than 15 ℃;
(8) water curing
The calcium hydroxide saturation water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, the calcium hydroxide saturation water floods the section of jurisdiction fully, and water was supported 7-8 days;
(9) deposit the section of jurisdiction
The section of jurisdiction is vertical deposits, and shipping is dispatched from the factory behind natural curing time >=21 day.
9. production method as claimed in claim 8 is characterized in that comprising the steps:
(1) reinforcing bar machine-shaping
Reinforcing bar cuts, crooked, welding fabrication skeleton;
(2) reinforcing bar is gone into mould
After template cleaned out, the corresponding templates model was gone into the corresponding framework of steel reinforcement of mould, and proofreaied and correct;
(3) template is installed
Template is installed order installation, the gang form according to both sides behind the first termination, and template installs the accordance measurement of adopting testing tool to carry out installation quality in the back and detects;
(4) concreting
Intersect transportation system through three-dimensional concrete and concrete is transported to from mixing plant builds station, and casting concrete, the whole vibrations of the pneumatic bumper of frequency conversion are adopted in the vibrations of casting concrete limit, limit, vibrations, and vibrations time 5min is as the criterion with surperficial bleeding;
(5) dried hydrothermal curing
The section of jurisdiction maintenance is accomplished in the curing kilns in sealing, and its maintenance processes comprises: rest, intensification, constant temperature, cooling four-stage; In the maintenance processes, humidity is not less than 85% in the curing kilns;
1. rest
The time 2h that rests, 30 ℃ of environment temperatures;
2. heat up
Heating-up time 1h, 12 ℃/h of programming rate;
3. constant temperature
Constant temperature time 1.5h, 42 ℃ of environment temperatures, 52 ℃ of core temperature;
4. cooling
Temperature fall time 1h, 18 ℃/h of cooling rate;
(6) depanning
The depanning of aerial upset vacuum cup is adopted in the section of jurisdiction depanning, and overturns 90 ° aloft, leaves standstill cooling directly into the maintenance pond;
(7) leave standstill cooling
The section of jurisdiction becomes the two-layer mode of standing up to place in the indoor no water curing pond; After the section of jurisdiction of a circulation was placed and accomplished, the top in maintenance pond covered the maintenance cloth with the permeability of preserving moisture, and forms an enclosure space; The secondary maintenance is carried out in the section of jurisdiction; Accomplish cooling when letting in the section of jurisdiction the abundant aquation of cement, temperature fall time 12h, surface, section of jurisdiction and the curing water temperature difference are less than 15 ℃;
(8) water curing
The calcium hydroxide saturation water is injected in the section of jurisdiction in the water curing pond after leaving standstill the cooling completion, the calcium hydroxide saturation water floods the section of jurisdiction fully, and water was supported 7 days;
(9) deposit the section of jurisdiction
The section of jurisdiction is vertical deposits, natural curing after 21 days shipping dispatch from the factory.
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| CN201110394498.0A CN102528917B (en) | 2011-12-02 | 2011-12-02 | Energy-saving environment friendly production method of concrete lining segment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103029208A (en) * | 2013-01-09 | 2013-04-10 | 天津恩赐凯瑞建材有限公司 | Novel intelligent automatic humidity and temperature kiln inside curing system and method for cement product |
| CN103693926A (en) * | 2013-12-24 | 2014-04-02 | 中铁二十三局集团轨道交通工程有限公司 | Corrosion resistant reinforced concrete pipe piece for subway |
| CN108818907A (en) * | 2018-07-21 | 2018-11-16 | 厦门三航混凝土有限公司 | Section of jurisdiction conserves intelligent temperature control system and section of jurisdiction maintenance process |
| CN110116452A (en) * | 2019-03-27 | 2019-08-13 | 北京星航机电装备有限公司 | A kind of fixed die station intelligently conserves the control system and method for unit |
| CN110216782A (en) * | 2019-06-05 | 2019-09-10 | 河南水建集团有限公司 | A kind of steam-cured system of section of jurisdiction assembly line |
| CN111906900A (en) * | 2020-08-13 | 2020-11-10 | 广东博智林机器人有限公司 | Preparation method of standard section of bench formwork, long formwork table and laminated slab |
| CN113815103A (en) * | 2021-09-30 | 2021-12-21 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for producing concrete member and concrete member |
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| CN103029208A (en) * | 2013-01-09 | 2013-04-10 | 天津恩赐凯瑞建材有限公司 | Novel intelligent automatic humidity and temperature kiln inside curing system and method for cement product |
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| CN103693926A (en) * | 2013-12-24 | 2014-04-02 | 中铁二十三局集团轨道交通工程有限公司 | Corrosion resistant reinforced concrete pipe piece for subway |
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| CN108818907A (en) * | 2018-07-21 | 2018-11-16 | 厦门三航混凝土有限公司 | Section of jurisdiction conserves intelligent temperature control system and section of jurisdiction maintenance process |
| CN110116452A (en) * | 2019-03-27 | 2019-08-13 | 北京星航机电装备有限公司 | A kind of fixed die station intelligently conserves the control system and method for unit |
| CN110216782A (en) * | 2019-06-05 | 2019-09-10 | 河南水建集团有限公司 | A kind of steam-cured system of section of jurisdiction assembly line |
| CN111906900A (en) * | 2020-08-13 | 2020-11-10 | 广东博智林机器人有限公司 | Preparation method of standard section of bench formwork, long formwork table and laminated slab |
| CN111906900B (en) * | 2020-08-13 | 2021-10-22 | 广东博智林机器人有限公司 | Preparation method of standard section of bench formwork, long formwork table and laminated slab |
| CN113815103A (en) * | 2021-09-30 | 2021-12-21 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for producing concrete member and concrete member |
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| CN102528917B (en) | 2014-06-18 |
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Address after: Qinghua East Road in Qingbaijiang District of Chengdu City, Sichuan Province, No. 173 610300 Patentee after: No.7 Engineering Co., Ltd. of China Railway No.8 Engineering Group Co., Ltd Address before: Qinghua East Road in Qingbaijiang District of Chengdu City, Sichuan Province, No. 173 610300 Patentee before: BRIDGE ENGINEERING COMPANY OF CHINA RAILWAY NO.8 ENGINEERING GROUP Co.,Ltd. |
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