CN109467341A - The construction method and application of a kind of king-post concrete, concrete - Google Patents
The construction method and application of a kind of king-post concrete, concrete Download PDFInfo
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- CN109467341A CN109467341A CN201811402678.7A CN201811402678A CN109467341A CN 109467341 A CN109467341 A CN 109467341A CN 201811402678 A CN201811402678 A CN 201811402678A CN 109467341 A CN109467341 A CN 109467341A
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- 239000004567 concrete Substances 0.000 title claims abstract description 104
- 238000010276 construction Methods 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000005457 ice water Substances 0.000 claims abstract description 21
- 239000010881 fly ash Substances 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 20
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- -1 rubble Substances 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 238000009415 formwork Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000011178 precast concrete Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 5
- 230000009194 climbing Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 240000008415 Lactuca sativa Species 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 235000012045 salad Nutrition 0.000 description 2
- 206010011376 Crepitations Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
Abstract
The invention discloses the construction methods and application of a kind of king-post concrete, concrete, and wherein king-post concrete includes following raw material: cement, flyash, miberal powder, sand, rubble, water and additive；Wherein, the water is normal-temperature water or ice water, according to the raw material of following mass fraction: 300-450 parts of cement, 120-50 parts of flyash, 65-45 parts of miberal powder, 700-650 parts of sand, 1200-1000 parts of rubble, 140-160 parts of water and 7-5 parts of additive.The adverse weathers stake holes situation such as river surface strong wind, altitude low temperature is faced, can be avoided the king-post concrete of concrete strength loss and outer surface cracking.
Description
Technical field
The invention mainly relates to concrete and its technical field of construction more particularly to a kind of suitable for areas of high temperature and rainfall
The construction and application of the concrete, concrete of king-post.
Background technique
Clear China's main tower of bridge king-post uses the yeast of outside sweep 325m, inside curve radius 270m, 300m composition
Line lotus flower moulding, high 100.8m, 23 construction segments of single pier point, standard knot high 4.5m, concrete grade C55, and for substantially
Product concrete works, construction time cross over winter, and concrete control splits that difficulty of construction is big；King-post construction uses hydraulic climbing mould construction work
Skill, interior outside king-post Curve Design is different, considerably increases climbing formwork for construction difficulty；Vertical prestressing steel strand wires are set in king-post, it is single
Root is for up to 52.54m, most weighs about 6t.
It is 124.8m, clear China that king-tower, which is generally big curve lotus-shaped flower thin-walled king-post, concrete C55, and top absolute altitude,
The bridge big curve lotus-shaped flower thin-walled king-post construction time crosses over summer and winter, and it is low that river surface strong wind, high-altitude are faced in construction work
The adverse weathers stake holes situation such as temperature be easy to cause concrete strength loss and outer surface cracking.
In concrete casting, since temperature difference between inside and outside concrete is big, concrete strength is caused to become smaller, be easy to appear quality and ask
Topic.
Summary of the invention
It is an object of the invention to overcome above-mentioned technological deficiency, one kind is provided and is facing river surface strong wind, altitude low temperature etc. no
Sharp weather stake holes situation can be avoided the king-post concrete of concrete strength loss and outer surface cracking.
In order to realize that said effect, the present invention are achieved using following technological means:
A kind of king-post concrete, including following raw material:
Cement, flyash, miberal powder, sand, rubble, water and additive；
Wherein, the water is normal-temperature water or ice water, further, the raw material including following mass fraction:
300-450 parts of cement, 120-50 parts of flyash, 65-45 parts of miberal powder, 700-650 parts of sand, 1200-1000 parts of rubble,
140-160 parts of water and 7-5 parts of additive.
Further, the raw material including following mass fraction:
416 parts of cement, 52 parts of flyash, 52 parts of miberal powder, 676 parts of sand, 1103 parts of rubble, 151 parts of normal-temperature water and additional
5.72 parts of agent.In the present solution, cement content is more, it is mainly used for winter, by the adjustment of cement, improves the strong of concrete
Degree.
Further, the raw material including following mass fraction:
347 parts of cement, 102 parts of flyash, 61 parts of miberal powder, 681 parts of sand, 1111 parts of rubble, 148 parts of ice water and additive
6.12 part.In the present solution, being mainly used for summer, at this point, strong concrete hardness can also guarantee, without too many cement.
The invention also discloses a kind of construction technologies of king-post concrete, comprising the following steps:
The mixing of concrete: cement, flyash, miberal powder, sand, rubble and additive are weighed respectively, above-mentioned raw materials are stirred
It mixes to form precast concrete；
Formwork: according to construction requirement and construction drawing, template installation is carried out at the construction field (site)；
The casting of concrete: concrete casting is carried out to mounted template, the precast concrete of preparation is poured into mold
In, water is then added, is poured and is plasticized；
Processing in casting: it to form certain volume when being poured into (concrete structure that length, width and height are both greater than 1m is just called greatly
Volume concrete) concrete component when, ice water mixing or isothermal holding are carried out to outermost concrete；
Demoulding: concrete after plasticizing is demoulded using release agent.
Further, in the processing in the step casting, the ice water is mixed specifically:
When construction environment is higher than 30 DEG C, the addition of water is carried out using cooling-water machine.When temperature is higher than in 30 DEG C, with dampening
The addition of amount, concrete gradually become solid from thin viscous, and at this time due to reaction, cement can generate heat, are located on the outside of solid
Heat can distribute at any time, but be located at solid among heat, it is difficult to exhale come, therefore use cooling-water machine carry out cold water note
Enter, so that the temperature difference on solid central and surface is unlikely to too big, guarantees the intensity of concrete.In the present embodiment, cold water
Temperature be 5 DEG C.
Further, further include before formwork in concrete component embedded cooling pipe, while ice water stirring, to cooling
Pipe is passed through cooling water and cools down.In order to further decrease the temperature difference of solid central position and surface location concrete, may be used also
To make its temperature close to surface temperature by the way that the cooling center of cooling water is added.
Further, in the processing in the step casting, the isothermal holding specifically: when temperature is lower than 5 DEG C,
It is cast on the outside of the mold of concrete, insulating layer is set, the outside of the insulating layer carries out covering fixation using plate.Work as winter
In use, external temperature is too low, internal temperature is too high, also needs isothermal holding.Existing heat preservation is all one layer, or is not protected
Temperature, this programme pass through the setting of insulating layer splice block, improve heat insulation effect, reduce the temperature inside and outside the concrete component to be formed
Difference.
The invention also discloses a kind of application of king-post concrete, the application is that concrete is constructed in summer king-post
When, winter king-post construction when or high-altitude king-post construct when application.
It further, is the king-post construction when height is in the high-altitude 90-120m when the high-altitude king-post is constructed.When height compared with
Gao Shi, the intensity of general concrete and the requirement after construction, are unable to reach Eligibility requirements, and the concrete in this programme is suitble to
In the intensity of high altitude operation.
Beneficial effects of the present invention are as follows:
In the present invention, by increasing ice water, so that when hot weather construction, after concrete casting, concrete component internal-external temperature difference
It is unlikely to too big, the intensity of the component of formation can be enhanced, loss of strength when concrete being avoided to start casting, surface is cracked
The phenomenon that.
Concrete in the present invention can be used in summer, winter and face the adverse weathers such as river surface strong wind, altitude low temperature
In the environment of stake holes, application range is special, using wide.
Construction technology in the present invention is effectively reduced in concrete casting by measures such as cooling-water machine or heat preservations
The outer temperature difference.
Specific embodiment
In order to make the present invention realize technological means, innovative characteristics, complete effect it can be readily appreciated that this hair is further described
It is bright.It realizes that technological means of the invention should not be limited to following instance, can be adjusted in the range of foregoing invention content.
Concrete in the present invention mainly includes formula as below:
Cement, flyash, miberal powder, sand, rubble, water and additive；
Wherein, the water be normal-temperature water or ice water,
In the present invention, by increasing ice water, in concrete casting, the temperature in concrete component middle position can reduce
It is big, mass concrete engineering to can satisfy construction seasons span so that concrete component internal-external temperature difference is unlikely to too big for degree
Construction.
When specifically used, king-post concrete includes the raw material of following mass fraction in the present embodiment: cement 300-450
Part, 120-50 parts of flyash, 65-45 parts of miberal powder, 700-650 parts of sand, 1200-1000 parts of rubble, 140-160 parts of water and additional
7-5 parts of agent.
Recipe ratio when use in winter, in the present embodiment are as follows: 416 parts of cement, 52 parts of flyash, 52 parts of miberal powder, sand 676
Part, 1103 parts of rubble, 151 parts of normal-temperature water and 5.72 parts of additive.When winter construction, ambient temperature is lower, and at this point, cement
Content is more, can generate heat, hard fast, the raising construction efficiency of intensity.At this point, needing to increase Insulation, keeping away in construction
Exempt from that concrete hull-skin temperature is too low, and temperature inside is excessively high, causes internal-external temperature difference big, reduce the intensity of concrete.
When summer in use, recipe ratio in the present embodiment are as follows: 347 parts of cement, 102 parts of flyash, 61 parts of miberal powder, sand
681 parts, 1111 parts of rubble, 148 parts of ice water and 6.12 parts of additive.When hot weather construction, need using ice water, main purpose is
The concrete component internal temperature formed is reduced, at this point, internal temperature is higher, external rapid heat dissipation, temperature is reduced fastly, is easy to lead
It causes internal-external temperature difference too big, and is mixed and stirred using ice water, the heating of concrete in reaction can be reduced.
Embodiment 1
In the present embodiment, construction is to construct in winter, is mainly the construction at 90m, this implementation to clear Hua Da bridge height
In example, concrete includes the raw material of following mass fraction: 416 parts of cement, 52 parts of flyash, 52 parts of miberal powder, 676 parts of sand, rubble
1103 parts, 151 parts of normal-temperature water and 5.72 parts of additive.
In the present embodiment, since winter temperature is colder, the temperature in Hunan is about 0 DEG C -5 DEG C；Meanwhile winter construction process
In, it being influenced by upper air current, concrete surface cooling is very fast, and cause thin wall concrete internal-external temperature difference larger, and generate temperature and split
Line.
Concrete in this implementation, Specific construction technique are as follows: the mixing of concrete: weighing cement, flyash, mine respectively
Powder, sand, rubble and additive, above-mentioned raw materials are stirred to form precast concrete；
Formwork: according to construction requirement and construction drawing, template installation is carried out at the construction field (site)；
The casting of concrete: concrete casting is carried out to mounted template, the precast concrete of preparation is poured into mold
In, water is then added, is poured and is plasticized；
Processing in casting: when being poured into the concrete component to form certain volume, outermost concrete is carried out
Isothermal holding；
Demoulding: concrete after plasticizing is demoulded using release agent.
Specifically, the processing intent in casting is to solve king-post face crack, the isothermal holding measure of use specifically:
Heat insulation formwork.Hydraulic climbing formwork is made of template, wooden H-beam and annular back cord, in order to increase the heat insulating ability of template
Can, the geotechnological cotton with a thickness of 2cm is pasted on the outside of the template between hydraulic climbing formwork wooden H-beam, uses three-ply board on the outside of geotechnological cotton
Covering fixation is carried out, is kept the temperature by the method to template " wearing cotton-wadded quilt ", the temperature for reducing concrete outer surface is scattered and disappeared.
Extend striking time.According to site operation temperature and construction needs, when temperature is less than 5 DEG C, king-post curing in the mold
Time be no less than 72 hours, reduce surface temperature be lost.
It further include the selection to release agent in the present embodiment, specifically: in order to ensure big curve lotus-shaped flower thin-walled king-post
Presentation quality selects template paint, aqueous release agent, hydraulic oil, salad oil to carry out field test, is compared by model pier block
It is as follows to analyze result:
Table 1-2 release agent contrast table
| Serial number | Release agent | Presentation quality | Blibbing | Construction | Applicability |
| 1 | Template paint | It is best | At least | It is difficult to clean off | It is not applicable |
| 2 | The release agent self-sufficient and strategically located region (TF-9) | Preferably | It is less | It is convenient to construct | It is applicable in |
| 3 | Hydraulic oil | Color difference is obvious | It adds | Binding dust | It is not applicable |
| 4 | Salad oil | Quality is general | It is more | Binding dust | It is not applicable |
Show by site-models Experimental Comparison: the self-sufficient and strategically located region (TF-9) bridge new type release agent release agent is relatively suitable for lotus flower
The construction of type king-post, concrete perception is preferable, and presentation quality is stablized.
In turn, in the present embodiment, release agent is had chance with the self-sufficient and strategically located region (TF-9) bridge new type release agent release agent.
After above-mentioned construction, find the intensity of clear Hua Da bridge can guarantee (there are many measurement data of intensity, in 55~
Between 70 megapascal), there is no crackles.
Embodiment 2
In the present embodiment, construction is to construct in winter, is mainly the construction at 108m, this implementation to clear Hua Da bridge height
In example, concrete includes the raw material of following mass fraction: 347 parts of cement, 102 parts of flyash, 61 parts of miberal powder, 681 parts of sand, rubble
1111 parts, 148 parts of ice water and 6.12 parts of additive.
In the present embodiment, due to the climatic characteristic of Hunan locality high temperature and rainy, hot weather construction match ratio needs guaranteeing to mix
The scheme for reducing the heat of hydration is used under the premise of solidifying soil intensity,
Construction technology in the present embodiment, comprising the following steps:
The mixing of concrete: cement, flyash, miberal powder, sand, rubble and additive are weighed respectively, above-mentioned raw materials are stirred
It mixes to form precast concrete；
Formwork: according to construction requirement and construction drawing, template installation is carried out at the construction field (site)；
The casting of concrete: concrete casting is carried out to mounted template, the precast concrete of preparation is poured into mold
In, water is then added, is poured and is plasticized；
Processing in casting: when being poured into the concrete component to form certain volume, outermost concrete is carried out
Ice water mixing processing；
Demoulding: concrete after plasticizing is demoulded using release agent.
In the present embodiment, the ice water mixing of use is handled specifically: summer uses cooling-water machine, reduces concrete and enters mould
Temperature, using the concrete heating etc. of ice water mix, reduction in transit；
It in the present embodiment, also has follow steps: burying cooling tube in the mass concrete component of king-post bottom, pass through
The circulation of cooling water takes away the heat of hydration of inside concrete in time；Or temperature measuring equipment is buried in inside concrete, it monitors at any time
Temperature difference between inside and outside concrete.
In the present invention, big curve lotus-shaped flower thin-walled king-post concrete mix is by field laboratory according to design drawing, gas
Environment and high-performance king-post concrete Tongbianling capsule is waited to be adapted to, and entrust Hunan University's civil engineering testing inspection center into
It has gone verifying, i.e., has done according to the match ratio of field laboratory and test again.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of king-post concrete, which is characterized in that including following raw material:
Cement, flyash, miberal powder, sand, rubble, water and additive；Wherein, the water be normal-temperature water or ice water, according to
The raw material of lower mass fraction:
300-450 parts of cement, 120-50 parts of flyash, 65-45 parts of miberal powder, 700-650 parts of sand, 1200-1000 parts of rubble, water
140-160 parts and 7-5 parts of additive.
2. a kind of king-post concrete according to claim 1, which is characterized in that the raw material including following mass fraction:
416 parts of cement, 52 parts of flyash, 52 parts of miberal powder, 676 parts of sand, 1103 parts of rubble, 151 parts of normal-temperature water and additive
5.72 part.
3. a kind of king-post concrete according to claim 1, which is characterized in that the raw material including following mass fraction:
347 parts of cement, 102 parts of flyash, 61 parts of miberal powder, 681 parts of sand, 1111 parts of rubble, 148 parts of ice water and additive 6.12
Part.
4. a kind of construction technology of king-post concrete a method according to any one of claims 1-3, which is characterized in that including following step
It is rapid:
The mixing of concrete: weighing cement, flyash, miberal powder, sand, rubble and additive respectively, and above-mentioned raw materials are stirred shape
At precast concrete；
Formwork: according to construction requirement and construction drawing, template installation is carried out at the construction field (site)；
The casting of concrete: concrete casting is carried out to mounted template, the precast concrete of preparation is poured into mold, so
After water is added, be poured and be plasticized；
Processing in casting: when being poured into the concrete component to form certain volume, ice water is carried out to outermost concrete
Mixing or isothermal holding；
Demoulding: concrete after plasticizing is demoulded using release agent.
5. a kind of construction technology of king-post concrete according to claim 4, which is characterized in that in the step casting
Processing in, the ice water is mixed specifically:
When construction environment is higher than 35 DEG C, the addition of water is carried out using cooling-water machine.
6. a kind of construction technology of king-post concrete according to claim 5, which is characterized in that further include before formwork
Embedded cooling pipe in concrete component is passed through cooling water to cooling tube and cools down while ice water stirring.
7. a kind of construction technology of king-post concrete according to claim 4, which is characterized in that in the step casting
Processing in, the isothermal holding specifically: when temperature be lower than 5 DEG C when, on the outside of the mold for being cast with concrete, setting heat preservation
The outside of layer, the insulating layer carries out covering fixation using plate.
8. a kind of application of the king-post concrete as described in claim 1-3, the application is that concrete is applied in summer king-post
Application when working hour, the construction of winter king-post or when high-altitude king-post is constructed.
9. a kind of application of king-post concrete according to claim 8, which is characterized in that when the high-altitude king-post is constructed
For the king-post construction when height is in the high-altitude 90-120m.
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| CN201811402678.7A CN109467341A (en) | 2018-11-23 | 2018-11-23 | The construction method and application of a kind of king-post concrete, concrete |
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| CN201811402678.7A CN109467341A (en) | 2018-11-23 | 2018-11-23 | The construction method and application of a kind of king-post concrete, concrete |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960004375B1 (en) * | 1993-09-16 | 1996-04-02 | 임순희 | Concrete composition |
| CN106522104A (en) * | 2016-12-21 | 2017-03-22 | 中铁四局集团有限公司 | Construction method of curved-surface arc-shaped concrete tower |
| CN106758841A (en) * | 2016-12-29 | 2017-05-31 | 中交第三航务工程局有限公司 | A kind of whole construction process of the double rope face low-pylon cable-stayed bridges of double tower |
| CN106904883A (en) * | 2017-02-23 | 2017-06-30 | 杭州筑乐科技有限公司 | Concrete and preparation method thereof |
-
2018
- 2018-11-23 CN CN201811402678.7A patent/CN109467341A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960004375B1 (en) * | 1993-09-16 | 1996-04-02 | 임순희 | Concrete composition |
| CN106522104A (en) * | 2016-12-21 | 2017-03-22 | 中铁四局集团有限公司 | Construction method of curved-surface arc-shaped concrete tower |
| CN106758841A (en) * | 2016-12-29 | 2017-05-31 | 中交第三航务工程局有限公司 | A kind of whole construction process of the double rope face low-pylon cable-stayed bridges of double tower |
| CN106904883A (en) * | 2017-02-23 | 2017-06-30 | 杭州筑乐科技有限公司 | Concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘朝强: "超高索塔高性能混凝土施工技术", 《安徽建筑》 * |
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Application publication date: 20190315 |