CN102241497A - Concrete with ultra-large volume, high strength and low hydration heat - Google Patents
Concrete with ultra-large volume, high strength and low hydration heat Download PDFInfo
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- CN102241497A CN102241497A CN2011101458329A CN201110145832A CN102241497A CN 102241497 A CN102241497 A CN 102241497A CN 2011101458329 A CN2011101458329 A CN 2011101458329A CN 201110145832 A CN201110145832 A CN 201110145832A CN 102241497 A CN102241497 A CN 102241497A
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- 239000004567 concrete Substances 0.000 title claims abstract description 145
- 238000006703 hydration reaction Methods 0.000 title claims abstract description 58
- 230000036571 hydration Effects 0.000 title claims abstract description 57
- 239000004568 cement Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000010881 fly ash Substances 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 7
- 239000011707 mineral Substances 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 18
- 238000013461 design Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 8
- 230000035882 stress Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
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- 238000011161 development Methods 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 235000009421 Myristica fragrans Nutrition 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 241001282153 Scopelogadus mizolepis Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002742 anti-folding effect Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000001115 mace Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011376 self-consolidating concrete Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- 208000013201 Stress fracture Diseases 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
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Abstract
The invention relates to concrete with ultra-large volume, high strength and low hydration heat. The concrete comprises the following components in parts by weight: 200-260 parts of cement, 100-160 parts of mineral powder, 80-100 parts of fly ash, 740-800 parts of fine aggregate, 1010-1050 parts of coarse aggregate, 4.0-5.0 parts of additive and 155-165 parts of water. The concrete with ultra-large volume, high strength and low hydration heat can be used to effectively reduce the hydration heat, greatly reduce the cracking risk of the large-volume concrete from the source and increase the engineering quality.
Description
Technical field
The present invention relates to material of construction, specially refer to a kind of ultra-large volume high strength low hydration heat concrete.
Background technology
Mass concrete is applied to water works the earliest, and uses comparatively general.And in recent years, along with the development of social economy and Building technology, construction scope constantly enlarges, and Highrise buildings and high-rise building are also more and more, and mass concrete becomes the important component part that makes up main facilities or high-rise building gradually.Mass concrete cracking phenomena occurs in structures such as the high level that is widely used in field of civil engineering and high-rise building, long-span bridge girder construction and Industrial buildings the time in than multiple-project.Cause mass concrete rimose reason can be divided into two classes: the one, structural crack is caused by external load, comprises main stress and other the structure secondary stress stressed crack of causing of conventional structure in calculating.The 2nd, the material-type crack is caused by the external force deformation variation by non-, mainly caused by thermal stress and concrete contraction.Thermal stress causes crack (thermal cracking), and the major cause that produces thermal cracking is caused by the temperature difference.Mass concrete is in pouring construction and later stage maintenance processes, because it is hydration heat that the hydration reaction of gelling material such as cement is emitted a large amount of heats, and the concrete scale of construction is big, thickness is thick, and concrete itself is the poor conductor of heat, hydration heat accumulates in inside concrete and is difficult for distributing, internal temperature up to 60 ℃～90 ℃.But concrete is in temperature-fall period, the outside cold concrete contraction of internal heat concrete constraint, be that the internal temperature field exists thermograde, formation temperature stress, cause internal stress, at the position that is tied, concrete contraction, with producing very big tensile stress (because concrete Young's modulus, the cause that strengthens with the increase in the length of time), if surpass concrete ultimate tensile strength, distress in concrete will appear, cause the concrete physical and mechanical property to reduce, etching medium easily is penetrated into concrete structure inside, thereby reduces concrete life.
It is the large cylinder that 121m, thickness reach 6m that the sole plate of center, Shanghai mansion engineering is designed to a diameter, and strength grade of concrete is C50.These sole plate 60,000 side C50 concrete need disposable continuous casting pound to finish.High, the disposable side of this ultra-large volume concrete strength grade measures the thick of big and thickness, these complex art conditions are had no precedent in the prior art, so that, reducing the risk of concrete cracking and having higher requirement how controlling the ultra-large volume concrete hydration heat.
Summary of the invention
The objective of the invention is to overcome the deficiency that existing concrete exists in the big scale of construction is built, a kind of ultra-large volume high strength low hydration heat concrete is provided.It is 121m that ultra-large volume high strength low hydration heat concrete of the present invention is applied in diameter, thickness is that the scale of construction of 6m reaches in 60000 sides' the cylinder-like structure, when building, requirement effectively reduces hydration heat, this mass concrete cracking of control on the source, the quality of raising engineering.
In order to reach the foregoing invention purpose, technical scheme provided by the invention is as follows:
A kind of ultra-large volume high strength low hydration heat concrete is characterized in that this concrete includes following composition:
Component cube consumption kg/m
3
Cement 200～260
Breeze 100～160
Flyash 80～100
Fine aggregate 740～800
Coarse aggregate 1010～1050
Admixture 4.0～5.0
Water 155～165.
In concrete of the present invention, described cement is middle low heat cement, and its 3d hydration heat is 220KJ/Kg, and the 7d hydration heat is 289 KJ/Kg.
In concrete of the present invention, described fine aggregate adopt fineness modulus greater than 2.3, silt content less than 2.0%, clod content is less than 0.5% natural medium sand.
In concrete of the present invention, it is the rubble of 5～25mm that described coarse aggregate adopts particle diameter.
In concrete of the present invention, described admixture is the poly carboxylic acid series water reducer of modification, and poly carboxylic acid series water reducer is produced by Mace is special, and model is RP325.Be added with viscosity modifier in the poly carboxylic acid series water reducer, the mass percent of its volume is 0.1%～0.3%, by the susceptibility of viscosity modifier modified polycarboxylic acid high efficiency water reducing agent to the susceptibility of water and the fluctuation of other raw material quality.
In concrete of the present invention, in the described cement in blended material consumption and the concrete adulterant consumption sum be not less than 65% of binder total amount.The slag of mixing in blended material in the cement is meant, flyash, the adulterant in the concrete are outer breeze, the flyash of mixing, and total glue is meant the total amount of gelling material.
Based on technique scheme, ultra-large volume high strength low hydration heat concrete of the present invention compared with prior art has following technological merit:
1. pass through the kind and the volume of proportioning cement, mineral admixture in the concrete of the present invention, and in conjunction with the factor of admixture, reduce hydration heat in the concrete by Synthesis, guarantee that the super thick concrete pouring quality of ultra-large volume satisfies the requirement of aspects such as design, construction and supply.
2. the present invention selects mineral admixture and interpolation poly carboxylic acid series water reducers such as middle low heat cement, big volume breeze and flyash for use, can reduce concrete hydration heat and rate of heat release effectively, help the raising of the early stage performance of concrete, improved concrete opposing rimose ability, reduce the risk that concrete produces defective in early days, this point is fairly obvious for the concrete effect of building of the big scale of construction of the super thickness of ultra-large volume.
Embodiment
Below we come in conjunction with specific embodiments ultra-large volume high strength low hydration heat concrete of the present invention done further and elaborate; make every effort to come more clearly to understand the present invention, but can not limit protection scope of the present invention with this from Design Theory and application in practice aspect.
The fissured control of ultra-large volume concrete is a systematic engineering.The gelling material selection of mass concrete and all links such as preparation, concrete production and pouring construction and maintenance all will have influence on the quality quality degree of final concrete works.Yet the hydration heat of gelling material is the main reference parameter that carries out the temperature cracks control of mass concrete design, also is control ultra-large volume concrete rimose source.Through a large amount of lab scale, pilot scale repeatedly and tests such as simulation test, and to hydration heat, the resistance to compression of ultra-large volume C50 concrete mix, split draw, anti-folding and play performance such as mould and thermometric is furtherd investigate, just determined the ultimate constituent proportioning of the super thick high-strength concrete of ultra-large volume:
Component cube consumption kg/m
3
Cement 200～260
Breeze 100～160
Flyash 80～100
Fine aggregate 740～800
Coarse aggregate 1010～1050
Admixture 4.0～5.0
Water 155～165.
Following table is a concrete C50 mix Design (units/m
3)
Remarks: slump 180mm ± 30mm;
Cement is topmost material in the concrete gelling system, and is one of main factor that influences temperature rise in the concrete.Because concrete thermal conductivity is low, liberated heat is difficult for scattering and disappearing during hydrated cementitious, and the inside concrete top temperature is reached more than 60 ℃.Because the cooling of concrete outside surface is very fast, just makes temperature difference between inside and outside concrete reach tens degree.The concrete exterior cooling produces shrinks, and inside is still uncolled, just produces internal stress, is easy to generate microfracture, causes the concrete water tolerance to reduce.Adopt the cement that hangs down thermal discharge and low rate of heat release just can reduce the internal temperature rise of mass concrete.Therefore, mainly be to adopt high-performance cement, the hydration heat and the rate of heat release that reduce cement are extremely important.Selecting strength grade for use is 42.5 grades of ordinary Portland cements, and technical indicator meets existing standard GB 175-2007 " general purpose portland cement ".What select in the embodiments of the invention is middle low heat cement, because the hydration heat of this cement 3d is being lower than moderate heat cement, the hydration heat of 7d is between moderate heat cement and low heat cement.And the hydration heat speed of this cement and the change curve of hydration heat thermal discharge and hydration time also are the actual requirements of comparatively compound our engineering, both satisfied the hydration heat requirement of engineering, hydration heat is not again the characteristic that satisfies the C50 high strength requirement of engineering too slowly simultaneously.The hydration heat rate of heat release of the middle low heat cement that adopts in the embodiment of the invention and heat are along with hydration time becomes certain curvilinear motion, and early stage heat release is very fast, and the hydration heat speed of cement reaches maximum about 12 hours, and rate of heat release reduces gradually afterwards.
Active mineral admixture is one of indispensable component of mass concrete, and general commonly used have flyash, a breeze etc.Utilize their physical influence, filling effect and volcanic ash effect, not only can reduce the inside yield shear stress of newly mixing self-compacting concrete significantly, improve rheological property, the pore structure and the mechanical property of self-compacting concrete structure can be improved, hydration heat can also be reduced greatly simultaneously.
Mineral admixture such as flyash and breeze is incorporated in the C50 gelling system, can significantly reduce hydration heat of concrete, and 3d hydration heat and 7d hydration heat have reduced by 22.3% and 13.5% respectively than reference cement.Simultaneously, the hydration heat rate of heat release is also slow than reference cement, and the peakedness ratio reference cement of the gelling system hydration heat speed of being made up of cement, breeze and flyash is postponed appearance in about 12 hours.Because the early age strength of concrete performance is relatively weaker, postponing of hydration heat peak value helps concrete and develops intensity as soon as possible, so that resist the cracking risk that the caused thermal stress of latter temperature stress is caused.In the concrete of the present invention, in the cement in blended material consumption and the concrete adulterant consumption sum be not less than 65% of total glue.The slag of mixing in blended material in the cement is meant, flyash, the adulterant in the concrete are outer breeze, the flyash of mixing, and total glue is meant the total amount of gelling material.
The high-performance poly carboxylic acid water reducing agent is one of concrete requisite component of preparation large volume C50 as topmost admixture.The high-performance poly carboxylic acid water reducing agent not only can reduce water consumption, reduce total glue consumption of concrete mix, simultaneously under the constant situation of water cement ratio, can reduce single cement consumption, so can reduce concrete absolute temperature rise, reduce concrete chemical shrinkage.Test-results according to W.H.dilger and C.Wang: high efficiency water reducing agent is postponed the time opening of hydrated cementitious, but the hydration rate after condensing is accelerated, but the hydration heat speed than reference cement is a lot of slowly generally.Admixture is the poly carboxylic acid series water reducer of modification in concrete of the present invention, and poly carboxylic acid series water reducer is produced by Mace is special, and model is RP325.Be added with viscosity modifier in the poly carboxylic acid series water reducer, the mass percent of its volume is 0.1%～0.3%, by the susceptibility of viscosity modifier modified polycarboxylic acid high efficiency water reducing agent to the susceptibility of water and the fluctuation of other raw material quality.
The gelling system of mixing a certain amount of admixture carries out hydration heat and detects, and also can change concrete whole hydration heat really, and not only hydration heat speed significantly reduces, and the hydration heat exothermic peak was postponed about 20 hours.According to test, 3d and 7d hydration heat have reduced by 37.3% and 24.6% than reference cement respectively, and the reduction amplitude is bigger, and the hydration heat than the cementitious material system of not mixing admixture has reduced by 19.3% and 12.8% simultaneously.These all are very beneficial for our control to the early stage quality of concrete.
By mineral admixture and interpolation high-performance poly carboxylic acid water reducing agents such as the middle low heat cement of selecting excellent performance, big volume breeze and flyash, can effectively reduce concrete hydration heat and rate of heat release, reduce the development of performances such as early age strength of concrete, help the raising of the early stage performance of concrete, reduce the risk that concrete produces defective in early days, improved concrete opposing rimose performance.
Simultaneously, for the operating mode of the primary concreting that solves ultra-large volume concrete, need to consider and research concrete pumping of C50 and parameters such as mechanical property and temperature rise.
(1) C50 concrete slump, divergence, the damage of collapsing in 1 hour in the present embodiment, collapsed that it is as shown in the table to decrease: the workability of C50 concrete when the stirring station issuance of materials in 2 hours
As seen from the above table, the workability of this C50 proportioning is relatively good, and the damage of not only collapsing is less, helps our long distance transportation, can supply simultaneously for a plurality of stirring stations, and can the concrete performance of better guarantees provide safeguard.Help pumping simultaneously.
(2) concrete 's air-containing
Following table is air content, molding temperature and the T500 of present embodiment C50 concrete when the stirring station issuance of materials
| Proportioning | Air content | Molding temperature (℃) | T500(1 hour) |
| The C50 proportioning | 2.5% | 17.5 | 18s |
By last table parameter as can be known, this C50 concrete 's air-containing is moderate, needs 18s when divergence is trickled to 500mm, not only can ensure concrete strength development, and do not want disposable trickling can be for concrete placement the time reference and assurance be provided too greatly.This is because the mansion sole plate center of taking, center, the Shanghai concrete construction mode of blooming is carried out primary concreting (promptly at first builds from the position, the center of circle of cake type, then stir gradually and smash concrete to all around), this mode requires concrete trickling unsuitable excessive.
(3) the C50 concrete coagulating time is as shown in the table in the embodiment of the invention:
| ? | Presetting period (h:min) | Final setting time (h:min) |
| Mark is supported indoor | 13:00 | 16:10 |
| Stirring station is outdoor | 21:30 | 24：25 |
As seen from the above table, can change to some extent the time of coagulation of ultra-large volume concrete along with the difference of envrionment temperature, but also be to satisfy the concrete pouring construction requirement.
(4) workability the during cast in situs of embodiment of the invention C50 concrete is as shown in the table:
| Proportioning | The slump (mm) | Divergence (mm) | The back taper time (s) |
| The C50 proportioning | 210 | 550 | 6 |
Can be seen that by last table the slump and divergence that this C50 concrete is transported to behind the simulated field building site are all better, whole workability parcel property is good, helps pumping, pouring construction.
In the architectural process of center, priority project Shanghai mansion, as the super thick sole plate of ultra-large volume, the concrete mixture performance of C50 of the present invention is comparatively excellent, can satisfy our pumping, pouring construction requirement preferably.
In addition, we to the concrete resistance to compression of C50 of the present invention, anti-folding, split performances such as drawing, play mould and shaft center compression resistant and study and test.Its data are as shown in the table:
As seen from the above table, no matter be that ultimate compression strength or other split tensile strength all are can the good engineering design requirements with playing mould.
According to actual working conditions, arrange point for measuring temperature at the scene, monitoring equipment adopts the multi-point temp microcomputer measurement system.The temperature monitoring frequency should not be less than 1 time/2h temperature rise period and temperature-fall period preceding 5 days, and all the other should not be less than 1 time/4h, but end temp monitoring when the continuous 24h of the table temperature difference is less than 25 ℃ in the concrete.After the data of test are carried out aggregation process, can obtain the changing conditions of top temperature along with the length of time: there is certain Changing Pattern in the top temperature of C50 concrete every day along with increasing the length of time, very fast at preceding 2 days temperature rise rates, reaching top temperature during by the 4th day is 60.9 ℃, the every day of cooling gradually afterwards, cooling rate is no more than 1 ℃ average every day, satisfies our mass concrete code requirement.
The super thick C50 concrete of ultra-large volume satisfies outside the engineering design requirement at aspects such as mixture performance and weather resistance, simultaneously because 60,000 side C50 concrete are that disposable continuous placing is finished in 60 hours.This just needs this C50 concrete mix on the basis that meets design requirement, and also needs to satisfy operating mode and construction requirement.On the basis that guarantees concrete quality, on the basis of existing stirring technique, adjust production technique, so that better produce service effectively for the engineering concrete.Because concrete single-deck churning time is the main factor that influences the concrete production delivery rate.Therefore, in the improvement of stirring technique, consider the influence of churning time emphatically to the concrete mix state.
Mansion sole plate ultra-large volume super thick C50 concrete in center, Shanghai began to produce, build during 26 days ~ March 28 March in 2010.6 of forming of, Chang Qiao new by the Pu Lian of company, Pu, Pu liter, grand one-tenth and Citroen zx mix the station, are equipped with more than 400 transport mixer, carry out concrete production and supply.It is 19 pumps the most for a long time that on-the-spot pump truck distributes: 6 fixed pump+13 automotive pump (4 56m+9 platform 48m), will in 60 hours, 60,000 side's concrete disposable pumps be delivered to specified construction part together.By the joint efforts of each side, the concrete quality of center, Shanghai mansion sole plate has been obtained excellent achievement.60,000 concrete are satisfactory according to schedule to be finished, and diameter is that 121m is thick does not almost have bleeding and bleeding for the big disk concrete surface of 6m, maintenance simultaneously so far, concrete surface does not have the penetrance crack, there is not long and wide harm crack yet, only be the Craquelure that minute quantity is arranged on the surface at some position, whole base arrangement body is not had quality influence.And indexs such as concrete intensity meet design requirement.
The present invention is by selecting and the volume change the kind of the cement of concrete mix, mineral admixture, and the Synthesis of various factors such as admixture, is that the hydration heat of concrete correspondence when proportioning designs drops to lower degree.Pass through simultaneously researchs such as the super thick C50 concrete mixture characteristic of ultra-large volume, mechanical property and temperature rises, the various performance perameters of deep grasp C50 mass concrete satisfy construction and design requirements.Also have,, under the situation that guarantees concrete quality, bring into play the concrete production efficient that each mixes the station as much as possible, satisfy the general requirement of concrete supply and construction the improvement of concrete stirring technology.
Claims (6)
1. ultra-large volume high strength low hydration heat concrete is characterized in that this concrete includes following composition:
Component cube consumption kg/m
3
Cement 200～260
Breeze 100～160
Flyash 80～100
Fine aggregate 740～800
Coarse aggregate 1010～1050
Admixture 4.0～5.0
Water 155～165.
2. a kind of ultra-large volume high strength low hydration heat concrete according to claim 1 is characterized in that described cement is middle low heat cement, and its 3d hydration heat is 220KJ/Kg, and the 7d hydration heat is 289 KJ/Kg.
3. a kind of ultra-large volume high strength low hydration heat concrete according to claim 1 is characterized in that, described fine aggregate adopt fineness modulus greater than 2.3, silt content less than 2.0%, clod content is less than 0.5% natural medium sand.
4. a kind of ultra-large volume high strength low hydration heat concrete according to claim 1 is characterized in that, it is the rubble of 5～25mm that described coarse aggregate adopts particle diameter.
5. a kind of ultra-large volume high strength low hydration heat concrete according to claim 1, it is characterized in that, described admixture is the RP325 poly carboxylic acid series water reducer of modification, is added with viscosity modifier in the poly carboxylic acid series water reducer, and the mass percent of its volume is 0.1%～0.3%.
6. a kind of ultra-large volume high strength low hydration heat concrete according to claim 1 is characterized in that, in the described cement in blended material consumption and the concrete adulterant consumption sum be not less than 65% of binder total amount.
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| CN113372049A (en) * | 2021-07-23 | 2021-09-10 | 新兴栈(绵阳)建材有限公司 | Ultra-large-volume high-strength low-hydration-heat concrete |
| CN113880533A (en) * | 2021-11-25 | 2022-01-04 | 十九冶成都建设有限公司 | Ultra-large volume concrete |
| CN116063042A (en) * | 2022-12-30 | 2023-05-05 | 中建西部建设湖南有限公司 | Low-shrinkage low-hydration-heat concrete and preparation method and application thereof |
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Address after: Four, No. 406 middle Jiangxi Road, No. 200002, Shanghai, Huangpu District Patentee after: Shanghai Buiding Material Engineering Co., Ltd. Patentee after: Shanghai Construction No.1 (Group) Co., Ltd. Patentee after: Shanghai Pulian Ready Mixed Concrete Co., Ltd. Patentee after: Shanghai Puxin Yuban Concrete Co.,Ltd. Patentee after: Shanghai Pusheng Concrete Co.,Ltd. Patentee after: Shanghai Fukang Construction Co.,Ltd. Address before: Four, No. 406 middle Jiangxi Road, No. 200002, Shanghai, Huangpu District Patentee before: Shanghai Buiding Material Engineering Co., Ltd. Patentee before: Shanghai First Construction Co., Ltd. Patentee before: Shanghai Pulian Ready Mixed Concrete Co., Ltd. Patentee before: Shanghai Puxin Yuban Concrete Co.,Ltd. Patentee before: Shanghai Pusheng Concrete Co.,Ltd. Patentee before: Shanghai Fukang Construction Co.,Ltd. |
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Effective date of registration: 20130425 Address after: Four, No. 406 middle Jiangxi Road, No. 200002, Shanghai, Huangpu District Patentee after: Shanghai Buiding Material Engineering Co., Ltd. Patentee after: Shanghai Construction No.1 (Group) Co., Ltd. Patentee after: Shanghai Pulian Ready Mixed Concrete Co., Ltd. Patentee after: Shanghai Puxin Yuban Concrete Co.,Ltd. Patentee after: Shanghai Pusheng Concrete Co.,Ltd. Patentee after: Shanghai Fukang Construction Co.,Ltd. Patentee after: Shanghai MBT&SCG High-Tech Construction Chemical Co., Ltd. Address before: Four, No. 406 middle Jiangxi Road, No. 200002, Shanghai, Huangpu District Patentee before: Shanghai Buiding Material Engineering Co., Ltd. Patentee before: Shanghai Construction No.1 (Group) Co., Ltd. Patentee before: Shanghai Pulian Ready Mixed Concrete Co., Ltd. Patentee before: Shanghai Puxin Yuban Concrete Co.,Ltd. Patentee before: Shanghai Pusheng Concrete Co.,Ltd. Patentee before: Shanghai Fukang Construction Co.,Ltd. |
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Effective date of registration: 20181206 Address after: 200120 Southwest District, 2123 Pudong Road, Pudong New Area, Shanghai. Co-patentee after: Shanghai Construction No.1 (Group) Co., Ltd. Patentee after: Shanghai Buiding Material Engineering Co., Ltd. Co-patentee after: Shanghai Pulian Ready Mixed Concrete Co., Ltd. Co-patentee after: Shanghai Puxin Yuban Concrete Co.,Ltd. Co-patentee after: Shanghai Pusheng Concrete Co.,Ltd. Co-patentee after: Shanghai Fukang Construction Co.,Ltd. Address before: 200002 four floor, 406 Jiangxi Road, Huangpu District, Shanghai. Co-patentee before: Shanghai Construction No.1 (Group) Co., Ltd. Patentee before: Shanghai Buiding Material Engineering Co., Ltd. Co-patentee before: Shanghai Pulian Ready Mixed Concrete Co., Ltd. Co-patentee before: Shanghai Puxin Yuban Concrete Co.,Ltd. Co-patentee before: Shanghai Pusheng Concrete Co.,Ltd. Co-patentee before: Shanghai Fukang Construction Co.,Ltd. Co-patentee before: Shanghai MBT&SCG High-Tech Construction Chemical Co., Ltd. |
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Address after: 200120 Southwest District, 2123 Pudong Road, Pudong New Area, Shanghai. Co-patentee after: SHANGHAI CONSTRUCTION NO.1 (Group) Co.,Ltd. Patentee after: Shanghai Construction Engineering Building Materials Technology Group Co., Ltd Co-patentee after: SHANGHAI PULIAN PREMIXED CONCRETE Co.,Ltd. Co-patentee after: SHANGHAI PUXIN YUBAN CONCRETE Co.,Ltd. Co-patentee after: SHANGHAI PUSHENG CONCRETE Co.,Ltd. Co-patentee after: SHANGHAI FUKANG CONSTRUCTION Co.,Ltd. Address before: 200120 Southwest District, 2123 Pudong Road, Pudong New Area, Shanghai. Co-patentee before: SHANGHAI CONSTRUCTION NO.1 (Group) Co.,Ltd. Patentee before: SHANGHAI JIANGONG CONSTRUCTION MATERIAL Co.,Ltd. Co-patentee before: SHANGHAI PULIAN PREMIXED CONCRETE Co.,Ltd. Co-patentee before: SHANGHAI PUXIN YUBAN CONCRETE Co.,Ltd. Co-patentee before: SHANGHAI PUSHENG CONCRETE Co.,Ltd. Co-patentee before: SHANGHAI FUKANG CONSTRUCTION Co.,Ltd. |