CN103086668B - Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete - Google Patents
Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete Download PDFInfo
- Publication number
- CN103086668B CN103086668B CN201310028819.4A CN201310028819A CN103086668B CN 103086668 B CN103086668 B CN 103086668B CN 201310028819 A CN201310028819 A CN 201310028819A CN 103086668 B CN103086668 B CN 103086668B
- Authority
- CN
- China
- Prior art keywords
- steel tube
- design method
- concrete
- volume
- pumping self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 47
- 239000010959 steel Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005086 pumping Methods 0.000 title claims abstract description 27
- 238000013461 design Methods 0.000 title claims abstract description 23
- 238000002156 mixing Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000005056 compaction Methods 0.000 claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 239000004568 cement Substances 0.000 claims abstract description 9
- 230000008929 regeneration Effects 0.000 claims description 35
- 238000011069 regeneration method Methods 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 9
- 239000002956 ash Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000000979 retarding effect Effects 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000012615 aggregate Substances 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 229910021487 silica fume Inorganic materials 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention belongs to the technical field of concrete preparation of civil engineering, and relates to a design method of a C60-grade pumping self-compacting steel tube recycled concrete mix proportion. The technical problem of preparation of application of recycled concrete in concrete filled steel tubes is solved, and a C60-grade pumping self-compaction concrete filled steel tube mixing proportion design method is provided. The technical scheme of the mix proportion design method is as follows: cement, primary coarse aggregate, regenerated coarse aggregate, fine aggregate, water, flyash, silica fume and high performance water reducing agent in Kg/m3: (320-450): (616-704): (176-264): (750-850): (150-165): (80-120): (20-40): (7-10). The method has the advantages that the method can provide a C60-grade pumping self-compaction recycled concrete mix proportion design method for a steel tube recycled concrete structure, and has important theoretical, social and practical values for promoting the reasonable and wide application of the recycled concrete and the steel tube recycled concrete structure and the sustainable development of building-resource-environment.
Description
Technical field
The invention belongs to the concrete technology field of civil engineering, particularly a kind of C60 level pumping self-compaction steel pipe againGrowing concrete mixing proportion design method.
Background technology
Concrete filled steel tube is as a kind of combined member, utilize steel pipe and concrete bi-material in loading process mutuallyEffect, can give full play to steel tensile strength greatly and the good advantage of concrete compression performance, has made up bi-material each simultaneouslyFrom shortcoming, this is the advantage place of steel tube-concrete composite structure. Its general principle is specially: 1. utilize concrete filledSupporting role, strengthens the geometrical stability of steel pipe walls, changes the unstable failure pattern of empty steel pipe, occurs to avoid or to delay steel pipeCripling, thus giving full play to of tube material performance ensured. 2. utilize the effect of contraction of steel pipe to core concrete, make coreHeart concrete is in three-dimensional compressive stress state, and the rigidity that pipe inner concrete is formed is restrained effect, thereby improves concrete anti-Compressive Strength and deformability, its plasticity and toughness are greatly improved, and have prevented the brittle break of steel pipe inner concrete. In addition, at steelIn the work progress of pipe concrete, steel pipe can also be as building the template of core concrete, therefore easy construction and reducingOperating expenses.
At present, be accompanied by country and society strengthens gradually to the protection consciousness of resources and environment, how saving resource and energyHow source, realize the recycling of discarded concrete rationally and effectively, is country and even the each province and city development in science and technology most important thing. ChinaBuilding waste annual emissions is more than 6,000,000,000 ton, is that maximum countries is discharged in the world, and the main constituent of building rubbishFor discarded concrete, account for 30%～40%. Therefore, how science is processed with utilizing discarded concrete is current core of confrontingHeart problem and main task, become domestic and international concern and problem demanding prompt solution.
The provinces and cities such as Shanghai, Qingdao, Shenzhen have all set up building waste treatment plant, especially in planning, are distributed in Beijing fourThe building waste factory of the environment-friendly building materials company of first Taida that is positioned at Yang Fang town, Changping District of one of four building waste treatment plants in weekCome into operation in 2011 and produced concrete regenerating coarse-fine aggregate. In addition, in 2011, country, place, industry and BeijingCity has promulgated " regeneration concrete or regeneration coarse-fine aggregate application technology code and specification " in succession. In addition, regeneration concrete is eachPlant mechanical property, service behaviour and durability etc. by adding flyash, silicon ash and high-performance water reducing agent etc. to improve.The above-mentioned regeneration concrete that is is applied to concrete filled steel tube system and has created various favourable conditions.
The problem that wants fundamentally to solve China and even the existence of each province and city building waste, one of approach is to take to build materialMaterial recycles pattern, changes traditional linear disposal options, walks the road of regeneration, reduces building complying with natural resourcesRely degree, really realize the whole resources of building waste, in protection of the environment, strive for larger economic interests and society's effectBenefit, and this architecture structure form of steel tube regeneration concrete is exactly for discarded concrete resource provides an effective approach.Concrete filled steel tube is as a kind of combined member, can give full play to that steel tensile strength is large and that concrete compression performance is good is excellentPoint, has made up bi-material shortcoming separately simultaneously, and has more been conducive to apply regeneration concrete, can be widely used in and buildsBuild, the engineering field such as bridge, subway station.
At present, about steel tube-concrete composite structure construction, its core concrete is built and generally adopted pump both at home and abroadSend jacking casting method, this kind of casting method can ensure that its core concrete has the good Performance and quality of building. Also simultaneouslyConsider the unsuitable and too high concrete of more difficult preparation strength of regeneration concrete, and concrete filled steel tube engineering structure is general at presentAdopt C60 strength grade, therefore using special as the present invention C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design methodResearch emphasis and the direction of profit.
Therefore, by systematically providing " C60 pumping self-compaction steel tube regeneration concrete mixing proportion design method ", canAccelerate regeneration concrete and extensively, be reasonably applied in engineering structure, fundamentally solve country and even each province and city building wasteThe problem existing; Not only can promote to establish and improve the building waste joint disposal system that is applicable to country and even each province and city actual conditionsSystem, has also promoted national scientific and technological progress, economic construction, environment and social development simultaneously. Therefore, imperative and economy and societyCan be significant.
Summary of the invention
The object of the invention is to overcome the existing deficiency about steel tube regeneration Concrete technology, especially for being high-strengthThe deficiency of pumping self-compaction steel tube regeneration Concrete technology, provides a kind of for steel tube regeneration concrete combined structureC60 level pumping self-compaction regeneration concrete. This kind of regeneration concrete can meet builds the required pumping of concrete filled steel tube from closeReal performance, without vibrating, and intensity can reach C60 grade, is suitable for as high level or high-rise building engineering, large span highBridge engineering, metro station tunnel engineering etc. are important, the combination of the post of Special complex structure and the concrete filled steel tube of supporting memberStructure.
The present invention for addressing the above problem adopted technical scheme is:
This concrete match ratio is:
Cement: primary coarse aggregate: recycled coarse aggregate: fine aggregate: water: flyash: silicon ash: high-performance water reducing agent is: (singlePosition: Kg/m3)：(320～450)∶(616～704)∶(176～264)∶(750～850)∶(150～165)∶(80～120)∶(20～40)∶(7～10)。
Described recycled coarse aggregate is I level, and best replacement rate is 20～30%, is continuous grading, and particle diameter is Ф 5～20mm,Recycled coarse aggregate should adopt pre-wet process, otherwise calculates its additional water consumption according to recycled coarse aggregate water absorption rate.
Described steel pipe is Q345 or Q390 or Q420, and maximum diameter of aggrogate is not more than 1 with the ratio of pumping caliber: (3～5).
Described mineral admixture refers to I or II level flyash and high quality silicon ash, and the volume of flyash is 15～30%, siliconThe volume of ash is 5～10%, and cement should preferentially be selected PI52.5,42.5, selects and then PO52.5,42.5, works as cementAdopt PO type, wherein the volume of I level flyash should be got the lower limit near above-mentioned scope, and its cement specific surface area used is preferably335～365m2Between/kg, binder total amount should not exceed 560kg/m3And should not be less than 470kg/m3。
Described concrete fine aggregate all adopts natural river sand, is medium sand, and sand coarse aggregate ratio is 42～48%, and concrete coarse aggregate is mixedAmount should not be greater than 950kg/m3。
Described water-binder ratio is 0.28～0.32, should use absolute volume method to carry out mix-design, unit volumeCoarse aggregate amount is preferably 0.27～0.34m3, unit volume fine aggregate amount is preferably 0.43～0.46m3, pigment volume ratio is preferably 0.75～1.10, unit volume powder volume is preferably 0.18～0.25m3, unit volume slurry amount is preferably 0.34～0.42m3。
Described high-performance water reducing agent is the polycarboxylic acids high efficiency diminishing with pumping admixture performance, retarding performance, bleed performanceAgent, water-reducing rate must be greater than 25%, and has certain guarantor and mould function, and its volume should be between 1～2%.
Beneficial effect of the present invention is:
1. the regeneration concrete that the present invention produces is that a kind of pumping that is applicable to steel tube regeneration concrete combined structure is from closeReal performance, without the mixture ratio design of recycled aggregate concrete method of vibrating, and intensity can reach C60 grade, is beneficial to very much pumpSend self-compaction this modernization casting craft, especially for steel tube-concrete composite structure, thisly build performance particularlyImportant. This kind of regeneration concrete can be suitable for as high level or high-rise building engineering, large span elevated bridge engineering, subway stationTunnel Engineering etc. are important, the post of Special complex structure and the steel tube-concrete composite structure of supporting member.
2. be conducive to promote regeneration concrete and steel tube regeneration concrete combined structure to apply and build rationally, widelyDevelop build-resource-continuity of environment, fundamentally solve the problem that China's building waste exists; Also can promote to build simultaneouslyFound the sound building waste joint disposal system that is applicable to China's actual conditions, also promoted in addition scientific and technological progress, the economy of ChinaConstruction, environment and social development, all have important theory significance and practical value. Therefore, imperative and economy, environment andSocial effect is great.
Detailed description of the invention
The invention provides a kind of C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method, below byThe invention will be further described for detailed description of the invention. In line with regeneration concrete composition material the most economic, the most common being suitable forSituation under, carry out the design of following match ratio method.
Embodiment:
Cement: be the PI42.5 portland cement of certain cement plant production.
Sand: river sand, medium sand.
Stone: primary coarse aggregate is natural rubble, regenerated coarse aggregate is produced by building iron concrete discarded mixedSolidifying soil carries out with jaw crusher that the processing such as second-time breakage and screening obtain, and recycled coarse aggregate adopted pre-wet process,And be placed to the configuration of using it for again regeneration concrete after saturation plane is dried, and particle diameter is 5～20mm, continuous grading, withEvery regulation of Shi Fuhe national regulation " GBT25177-2010 the reinforcement of concrete regenerated coarse aggregate ".
Water: running water.
Flyash: the I level flyash that certain power plant produces.
Silicon ash: be the high quality silicon ash of certain Antaciron factory production.
High-performance water reducing agent: the high-performance polycarboxylic acids water reducing agent that certain additive factory produces, there is pumping admixture function, be slow settingHigh efficiency water reducing agent, water-reducing rate is greater than 25%, and better with above-mentioned PI42.5 portland cement compatibility.
A kind of C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method is as follows:
Claims (7)
1. a C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method, described mix-design is for being cast inIn steel pipe, there is pumping self-compacting ability, without the regeneration concrete method for designing of vibrating, strength grade is C60, its feature existsIn, this concrete is according to component unit K g/m3Match ratio be: cement: primary coarse aggregate: recycled coarse aggregate: fine aggregate: water:Flyash: silicon ash: high-performance water reducing agent=(320～450): (616～704): (176～264): (750～850): (150～165)∶(80～120)∶(20～40)∶(7～10)。
2. C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method according to claim 1, its feature existsIn, described recycled coarse aggregate is I level, and best replacement rate is 20～30%, is continuous grading, and particle diameter is Φ 5～20mm, and regeneration is thickGather materials and should adopt pre-wet process, otherwise calculate its additional water consumption according to recycled coarse aggregate water absorption rate.
3. C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method according to claim 1, its feature existsIn, described steel pipe is Q345 or Q390 or Q420, maximum diameter of aggrogate is 1 with the ratio of pumping caliber: (3～5).
4. C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method according to claim 1, its feature existsIn, described flyash refers to I or II level, and the volume of flyash is 15～30%, and the volume of silicon ash is 5～10%, and cement is suitableSelect PI52.5,42.5, its cement specific surface area used is preferably 335～365m2Between/kg, binder total amount should not surpassCross 560kg/m3And should not be less than 470kg/m3。
5. C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method according to claim 1, its feature existsIn, described concrete fine aggregate all adopts natural river sand, is medium sand, and sand coarse aggregate ratio is 42～48%, and concrete coarse aggregate volume is notShould be greater than 950kg/m3。
6. C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method according to claim 1, its feature existsIn, described water-binder ratio is 0.28～0.32, should use absolute volume method to carry out mix-design, unit volume coarse aggregateAmount is preferably 0.27～0.34m3, unit volume fine aggregate amount is preferably 0.43～0.46m3, pigment volume ratio is preferably 0.75～1.10,Unit volume powder volume is preferably 0.18～0.25m3, unit volume slurry amount is preferably 0.34～0.42m3。
7. C60 level pumping self-compaction steel tube regeneration concrete mixing proportion design method according to claim 1, its feature existsIn, described high-performance water reducing agent is with the polycarboxylic acid series high efficiency water reducing agent of pumping admixture performance, retarding performance, bleed performance, subtractsWater rate must be greater than 25%, and has certain guarantor and mould function, and its volume should be between 1～2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028819.4A CN103086668B (en) | 2013-01-15 | 2013-01-15 | Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028819.4A CN103086668B (en) | 2013-01-15 | 2013-01-15 | Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103086668A CN103086668A (en) | 2013-05-08 |
| CN103086668B true CN103086668B (en) | 2016-05-18 |
Family
ID=48199865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310028819.4A Expired - Fee Related CN103086668B (en) | 2013-01-15 | 2013-01-15 | Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103086668B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334542A (en) * | 2013-07-17 | 2013-10-02 | 江苏永泰建造工程有限公司 | Steel pipe-contained recycled concrete column and implementation method thereof |
| CN104318069B (en) * | 2014-09-30 | 2017-04-05 | 郑州大学 | Regenerated aggregate concrete match ratio determines method |
| CN104278621B (en) * | 2014-10-20 | 2017-03-15 | 广西交通科学研究院 | Pin-connected panel regenerates concrete filled steel tube Y type bridge piers |
| CN104278622A (en) * | 2014-10-20 | 2015-01-14 | 广西交通科学研究院 | Recycled-concrete cross steel-pipe special-shaped column pier |
| CN104478325A (en) * | 2014-11-28 | 2015-04-01 | 沈阳大学 | C90-grade self-compaction high-strength concrete and preparation method thereof |
| CN104591656A (en) * | 2015-02-13 | 2015-05-06 | 福建江夏学院 | Low-drying shrinkage high-performance recycled concrete |
| CN105753400A (en) * | 2016-01-22 | 2016-07-13 | 北方工业大学 | High-temperature-burst-resistant self-compacting concrete, preparation method thereof and steel tube concrete |
| CN105819779A (en) * | 2016-03-23 | 2016-08-03 | 沈阳大学 | Grade-C60 high-strength recycled concrete and preparation method thereof |
| CN107777961B (en) * | 2016-08-31 | 2020-07-03 | 北京市第五建筑工程集团有限公司 | High-strength self-compacting concrete easy for super high-rise pumping |
| CN106565162B (en) * | 2016-09-30 | 2018-08-28 | 郑州大学 | Steel fibre regenerated coarse aggregate concrete mix determines method |
| CN107324713B (en) * | 2017-05-06 | 2019-11-26 | 武汉理工大学 | A kind of self-compaction concrete filled steel tube and preparation method thereof |
| CN107879691B (en) * | 2017-05-09 | 2020-12-25 | 广西交通科学研究院有限公司 | Large-volume concrete with hydration heat temperature comprehensively controlled at C30/C40 level |
| CN108059408A (en) * | 2017-12-22 | 2018-05-22 | 中建八局第建设有限公司 | A kind of high intensity self-compacting concrete and preparation method thereof |
| CN108229005B (en) * | 2017-12-29 | 2022-01-11 | 上海建工集团股份有限公司 | Recycled concrete with strength grade of more than C50 and preparation method thereof |
| CN109761550B (en) * | 2019-03-15 | 2021-05-11 | 江苏中联铸本混凝土有限公司 | C60 self-compaction concrete slump survey system |
| CN116217152A (en) * | 2022-10-09 | 2023-06-06 | 中建八局第二建设有限公司 | Formula and preparation method of C60 strength grade steel fiber recycled concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982629A (en) * | 2010-10-18 | 2011-03-02 | 清华大学 | Assembly-type self-compaction steel tube and concrete composite structure |
-
2013
- 2013-01-15 CN CN201310028819.4A patent/CN103086668B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982629A (en) * | 2010-10-18 | 2011-03-02 | 清华大学 | Assembly-type self-compaction steel tube and concrete composite structure |
Non-Patent Citations (2)
| Title |
|---|
| 钢管高性能混凝土配制与超声波检测技术;凌立 等;《低温建筑技术》;20091231(第12期);第80-82页 * |
| 高性能再生混凝土基本力学性能研究;凌立 等;《低温建筑技术》;20091031(第10期);第16-18页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103086668A (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103086668B (en) | Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete | |
| CN103086667B (en) | Design method for mixing proportion of C20-grade high-performance recycled concrete | |
| CN102658596B (en) | Method for preparing high-strength concrete material by using fly ash and iron tailings | |
| CN104446175A (en) | Recycled high-performance concrete and preparation method thereof | |
| CN106220078A (en) | A kind of mixed earth of lightweight self-compaction regeneration and preparation method thereof | |
| CN102718447A (en) | High-performance reinforced mortar suitable for thick-layer spraying and preparation method thereof | |
| CN110467418B (en) | Double-expansion-source prefabricated concrete structure reinforced sleeve grouting material | |
| CN103242012B (en) | A kind of foamed concrete based on shale pottery | |
| CN103979891B (en) | Assembly-type enclosure wall and preparation method thereof | |
| CN104692729A (en) | Harmless solid waste high-performance concrete | |
| CN103910511A (en) | A superhigh-strength grouting material free from shrinkage in the whole course used for connection of a steel bar and a sleeve | |
| CN104628344A (en) | Low-autogenous shrinkage and high-performance recycled concrete | |
| CN105060786A (en) | Feldspar waste material concrete and preparation method thereof | |
| CN103408266A (en) | Design method for mixing ratio of C40-grade pumping self-compacting steel tube recycled concrete | |
| CN105731888A (en) | High-strength waste rock powder aerated concrete block | |
| CN104628343A (en) | Low-compression creep and high-performance recycled concrete | |
| CN104291758A (en) | Preparation method of structural lightweight aggregate concrete | |
| CN109467370A (en) | A kind of high additive mixing ceramic tile aggregate C160UHPC and preparation method thereof | |
| CN104003646B (en) | A kind of dry-mixed mortar water-keeping thickening material and application thereof | |
| CN104557124B (en) | Lightweight anti-crack concrete and preparation method thereof | |
| CN107473676B (en) | High-strength self-toughening building cement and preparation method thereof | |
| CN105439517B (en) | A kind of concrete for reinforced concrete composite structure C45 strength grades | |
| CN105481317B (en) | A kind of concrete for reinforced concrete composite structure C50 strength grades | |
| CN105621995B (en) | A kind of concrete for reinforced concrete composite structure C30 strength grades | |
| CN117209222A (en) | Preparation method of building 3D printing material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20180115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |