CN103896546B - Environment-friendly multifunctional grouting agent - Google Patents
Environment-friendly multifunctional grouting agent Download PDFInfo
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- CN103896546B CN103896546B CN201410084863.1A CN201410084863A CN103896546B CN 103896546 B CN103896546 B CN 103896546B CN 201410084863 A CN201410084863 A CN 201410084863A CN 103896546 B CN103896546 B CN 103896546B
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- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000011575 calcium Substances 0.000 claims abstract description 25
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000003638 reducing agent Substances 0.000 claims abstract description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 9
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 9
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 9
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 9
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 5
- 239000010440 gypsum Substances 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims abstract description 4
- 238000009628 steelmaking Methods 0.000 claims description 16
- 239000011505 plaster Substances 0.000 claims description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 239000006227 byproduct Substances 0.000 claims description 7
- 229910005533 GaO Inorganic materials 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000003034 coal gas Substances 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 230000003009 desulfurizing Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 239000002002 slurry Substances 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical group [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 206010018987 Haemorrhage Diseases 0.000 description 4
- 230000000740 bleeding Effects 0.000 description 4
- 231100000319 bleeding Toxicity 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229960001866 silicon dioxide Drugs 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 210000003205 Muscles Anatomy 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- YLUIKWVQCKSMCF-UHFFFAOYSA-N calcium;magnesium;oxygen(2-) Chemical compound [O-2].[O-2].[Mg+2].[Ca+2] YLUIKWVQCKSMCF-UHFFFAOYSA-N 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 231100000045 chemical toxicity Toxicity 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 101710031899 moon Proteins 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000003476 subbituminous coal Substances 0.000 description 1
- 230000002522 swelling Effects 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000003245 working Effects 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 relates to an environmental-friendly multifunctional grouting agent. The environmental-friendly multifunctional grouting agent is prepared by uniformly mixing the following raw materials by weight: 1.2-2.8g of sodium dodecylbenzene sulfonate, 0.4-0.8g of carboxymethyl cellulose, 16-24g of high-performance water reducing agent powder, 13.2-14.8g of granulated blast furnace slag powder, 37.8-42.6g of steel slag powder, 39.6-44.4g of desulfurization gypsum, 79.4-94.6g of high-calcium pulverized fuel ash and 90-110g of ultra-fine calcium dust. The environment-friendly multifunctional grouting agent is low in cost and convenient for realization of industrial production and has a good grouting effect.
Description
Technical field
The present invention relates to a kind of grouting agent, particularly relate to environment protection multifunctional grouting agent.
Background technology
At home, traditional grouting material that early stage prestressed pore passage grouting uses is generally neat slurry, during construction, adopts cement, water, water reducer, swelling agent etc. to carry out extemporaneous preparation.The grouting material of extemporaneous preparation must meet: water cement ratio is 0.40 ~ 0.45, mixes appropriate water reducer, can be reduced to 0.35 minimum for water cement ratio; The maximum bleeding rate of grouting material must not more than 3%, and bleeding again should be absorbed by mortar in 24h; The viscosity of grouting material should control at 14 ~ 18s; Grouting material possesses certain expansion before solidifying; The ultimate compression strength of grouting material test block is not less than 50MPa.On-the-spot cement, various admixture and the water of adopting prepares grouting material, usually have that various admixture compatibility is bad, the problem such as cement and water reducer bad adaptability, duct grouting is caused to there are following serious problems: (1) slurry quality stability is poor, poor fluidity, flow losses fast, and volume stability is bad; (2) fresh paste bleeding is large, and in easily emanate layering, slurry, micro-foam is many, and mobility is bad, and time of coagulation is not moderate, often has some setbacks during slurry mud jacking, easy plugging, and speed of application is slow, and duct is also difficult to into full state etc.; (3) slurry eakiness after sclerosis, bubble, needle gap class space are many, and bond unreal with presstressed reinforcing steel, even have disconnected line in slurry, duct is not full, highly put outer slurry and play powder etc.The problems referred to above not only affect construction, and directly concern weather resistance and the safe handling of bridge structure.
In recent years, domestic traditional grouting material to extemporaneous preparation has carried out certain improvement, cement, water and multiple admixture is adopted to prepare, efficiently solve the problem that on-the-spot various admixture is compatible bad, but because China is geographical vast, each place is different for the production of the starting material of cement, and the cement otherness produced is very large, and thus the problem of cement and admixture bad adaptability still exists.
Abroad, the grouting material of duct grouting onsite application is generally premixing commodity grouting material, and premixing commodity grouting material is the product of batch production, pass through test design in advance, then be made into uniform powder in factory, be packaged into bag, only need illustratively add water at the construction field (site) stirs into slurry.The problems such as various admixture compatibility is bad, cement and water reducer bad adaptability that adopt premixing commodity grouting material effectively to solve.
Enforcement domestic JTG/T F50-2011 on August 1st, 2011 " highway bridge construction technical specifications " all improves a lot to mud jacking slurry performance each side index request, and on-the-spot premixing not can meet the requirements again, is finally eliminated.Domestic Grouting Technology level can protect prestress guiding principle muscle not expose and round corrosion along with increasing substantially better, ensures prestressed concrete structure safety; Make prestressed reinforced concrete have good bonding, ensure prestressed effective transmission between them, make deformed bar and concrete acting in conjunction; Eliminate the prestressed concrete structure fatigure failure that STRESS VARIATION causes ground tackle under course under cyclic loading, extend the work-ing life of ground tackle, improve reliability of structure.
But grouting agent major part complicated process of preparation in the market, addition content is high, cost is high, simultaneously there is certain defect in most of product performance.
Summary of the invention
It is good and be convenient to realize the environment protection multifunctional grouting agent of suitability for industrialized production that technical problem to be solved by this invention is to provide a kind of with low cost, grouting result.
For solving the problem; environment protection multifunctional grouting agent of the present invention, is characterized in that: it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 1.2 ~ 2.8g, carboxymethyl cellulose 0.4 ~ 0.8g, high-performance water reducing agent powder 16 ~ 24g, GBFS 13.2 ~ 14.8g, steel-making slag powder 37.8 ~ 42.6g, desulfurated plaster 39.6 ~ 44.4g, high-calcium fly ass 79.4 ~ 94.6g, ultra tiny calcium powder dirt 90 ~ 110g.
Water-reducing rate >=30% of described high-performance water reducing agent powder.
Described GBFS refers to the industry byproduct produced in iron manufacturing process, its specific surface area>=400 m
2/ kg, GaO content are 40 ~ 50%, AI
2o
3content is the dry powder of 15 ~ 25%.
Described steel-making slag powder refers to that, by oxygen top blown converter steel making or the industry byproduct at electric arc steelmaking gained, its specific surface area is 350 ~ 600m
2/ kg, fGaO content are 2 ~ 6%, content of MgO is the dry powder of 3 ~ 8%.
Described desulfurated plaster refer to 0.08mm square hole sieve tail over≤10%, SO
3the gypsum of content>=40%.
Described high-calcium fly ass refers to that specific surface area is 400 ~ 600m
2/ kg, GaO content are 20 ~ 40%, fGaO content is the flyash of 5 ~ 9%.
Described ultra tiny calcium powder dirt refers to the raw material dust and high-temperature zone intense reaction and the particulate footpath dry gas cleaning produced and the product obtained that carry out along with coal gas in blast furnace ironmaking process.
The present invention compared with prior art has the following advantages:
1, the ultra tiny calcium powder dirt in the present invention belongs to dedusting product, and the main component of ultra tiny calcium powder dirt is calcium oxide, magnesium oxide and silicon-dioxide.It has following common feature: (1) particle diameter is extremely small, and density is little, easily flies away contaminate environment in air; (2) easily react, active good; (3) there is certain chemical toxicity.Develop and valuable resource not only can be made to be fully used to its comprehensive utilization, the pollution to environment can also be alleviated.And toxic substance is not only still all thought the most at present at home in the world, the safest, most effective measures to adopt cement solidification easily to float.
2, the ultra tiny calcium powder dirt of admixture in the present invention, because its particle diameter is close with SILICA FUME, has fabulous filling and " ball lubrication " effect, and significantly, water-reducing rate is up to more than 9% for physics water-reducing effect.Find that it not only can improve strength of cement mortar through repeatedly cement paste and glue sand test, also can reduce cement normal consistency, there is water reducing ability (see table 1).
Table 1
3, the present invention is compared with like product of the prior art, not only has reduction environmental pollution, protection of the environment; energy-saving and emission-reduction; resource regeneration, is easy to realize suitability for industrialized production, has stopped the secondary pollution to environment; and preparation process is simple; do not need special processing units, meanwhile, starting material major part of the present invention belongs to resource regeneration; neighboring markets ample supply of goods, and price is very cheap.
4, the present invention is compared with like product of the prior art, when identical water-cement ratio, adopt JTG/T F50-2011 " highway bridge construction technical specifications " test, not only addition content low by 9% ~ 11%, exceed 3.6MPa without bleeding layering, high workability, micro-expansibility but also 7d folding strength, ultimate compression strength exceeds 20MPa, 28d folding strength exceeds 3.8MPa, and ultimate compression strength exceeds 30.1 MPa(see table 2); Good stability of the present invention simultaneously, can standing storage (at least more than 6 months).
Table 2
5, because the present invention does not introduce containing Cl
-salt, therefore, greatly reduce the probability of steel bar corrosion, and nonirritant, workmen and cement mud-jack body performance had no adverse effects.
6, the present invention can be used for post stretching the duct grouting of bonding prestress bridge and Equipment Foundations, anchor pole grouting; Also can be used for the grouting of large-sized prestress structure simultaneously.
Embodiment
embodiment 1environment protection multifunctional grouting agent, it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 1.2g, carboxymethyl cellulose 0.4g, high-performance water reducing agent powder 24g, GBFS 13.2g, steel-making slag powder 37.8g, desulfurated plaster 39.6g, high-calcium fly ass 94.6g, ultra tiny calcium powder dirt 90g.
embodiment 2environment protection multifunctional grouting agent, it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 1.6g, carboxymethyl cellulose 0.5g, high-performance water reducing agent powder 22g, GBFS 13.6g, steel-making slag powder 39.0g, desulfurated plaster 40.8g, high-calcium fly ass 90.8g, ultra tiny calcium powder dirt 95g.
embodiment 3environment protection multifunctional grouting agent, it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 2.0g, carboxymethyl cellulose 0.6g, high-performance water reducing agent powder 20g, GBFS 14.0g, steel-making slag powder 40.2g, desulfurated plaster 42.0g, high-calcium fly ass 87.0g, ultra tiny calcium powder dirt 100g.
embodiment 4environment protection multifunctional grouting agent, it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 2.4g, carboxymethyl cellulose 0.7g, high-performance water reducing agent powder 18g, GBFS 14.4g, steel-making slag powder 41.4g, desulfurated plaster 43.2g, high-calcium fly ass 83.2g, ultra tiny calcium powder dirt 105g.
embodiment 5environment protection multifunctional grouting agent, it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 2.8g, carboxymethyl cellulose 0.8g, high-performance water reducing agent powder 16g, GBFS 14.8g, steel-making slag powder 42.6g, desulfurated plaster 44.4g, high-calcium fly ass 79.4g, ultra tiny calcium powder dirt 110g.
Above-mentioned
embodiment 1 ~ embodiment 5in, water-reducing rate>=30% of high-performance water reducing agent powder.Sodium dodecylbenzene sulfonate, carboxymethyl cellulose are technical grade.
GBFS refers to the industry byproduct produced in iron manufacturing process, its specific surface area>=400 m
2/ kg, GaO content are 40 ~ 50%, AI
2o
3content is the dry powder of 15 ~ 25%.
Steel-making slag powder refers to by oxygen top blown converter steel making or the industry byproduct at electric arc steelmaking gained, slag is through water-spraying control, then after natural drying ageing first quarter moon, again through broken, screening, oven dry and powder-grinding process, and before each operation, carry out that deferrization process makes, its specific surface area is 350 ~ 600m
2/ kg, fGaO content are 2 ~ 6%, content of MgO is the dry powder of 3 ~ 8%.
Desulfurated plaster refer to 0.08mm square hole sieve tail over≤10%, SO
3the gypsum of content>=40%.The SO to the discharge such as coal-burning power plant, refinery
2adopt desulfurizing and purifying Technology process gained industry byproduct, also known as FGD gypsum.
High-calcium fly ass refers to the flyash that a kind of calcium oxide that fuel-burning power plant adopts brown coal, sub-bituminous coal to give off as fuel is higher, is a kind of material not only containing some amount hydraulicity crystalline mineral but also containing lateral reactivity material.Compared with ordinary fly ash, its fineness comparatively carefully also has water-reducing effect simultaneously, early strength development is fast.Its specific surface area is 400 ~ 600m
2/ kg, GaO content are 20 ~ 40%, fGaO content is the flyash of 5 ~ 9%.
Ultra tiny calcium powder dirt refers to the raw material dust and high-temperature zone intense reaction and the particulate footpath dry gas cleaning produced and the product obtained that carry out along with coal gas in blast furnace ironmaking process, and its main component is calcium oxide, magnesium oxide, aluminium sesquioxide and silicon-dioxide.
Claims (6)
1. environment protection multifunctional grouting agent, is characterized in that: it is mixed rear obtained by the raw material of following quality: Sodium dodecylbenzene sulfonate 1.2 ~ 2.8g, carboxymethyl cellulose 0.4 ~ 0.8g, high-performance water reducing agent powder 16 ~ 24g, GBFS 13.2 ~ 14.8g, steel-making slag powder 37.8 ~ 42.6g, desulfurated plaster 39.6 ~ 44.4g, high-calcium fly ass 79.4 ~ 94.6g, ultra tiny calcium powder dirt 90 ~ 110g; Described ultra tiny calcium powder dirt refers to the raw material dust and high-temperature zone intense reaction that carry out along with coal gas in blast furnace ironmaking process and the product that obtains through dry gas cleaning of the particulate produced.
2. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: water-reducing rate >=30% of described high-performance water reducing agent powder.
3. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: described GBFS refers to the industry byproduct produced in iron manufacturing process, its specific surface area>=400 m
2/ kg, GaO content are 40 ~ 50%, Al
2o
3content is the dry powder of 15 ~ 25%.
4. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: described steel-making slag powder refers to that, by oxygen top blown converter steel making or the industry byproduct at electric arc steelmaking gained, its specific surface area is 350 ~ 600m
2/ kg, fGaO content are 2 ~ 6%, content of MgO is the dry powder of 3 ~ 8%.
5. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: described desulfurated plaster refer to 0.08mm square hole sieve tail over≤10%, SO
3the gypsum of content>=40%.
6. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: described high-calcium fly ass refers to that specific surface area is 400 ~ 600m
2/ kg, GaO content are 20 ~ 40%, fGaO content is the flyash of 5 ~ 9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084863.1A CN103896546B (en) | 2014-03-10 | 2014-03-10 | Environment-friendly multifunctional grouting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084863.1A CN103896546B (en) | 2014-03-10 | 2014-03-10 | Environment-friendly multifunctional grouting agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103896546A CN103896546A (en) | 2014-07-02 |
| CN103896546B true CN103896546B (en) | 2015-07-22 |
Family
ID=50988177
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478326B (en) * | 2014-11-28 | 2016-03-23 | 中交二航武汉港湾新材料有限公司 | A kind of pumping of prostressed duct material and preparation method thereof |
| CN106242345A (en) * | 2016-07-19 | 2016-12-21 | 甘肃智通科技工程检测咨询有限公司 | A kind of nanometer base cement modifier |
| CN106220101A (en) * | 2016-08-12 | 2016-12-14 | 卓达新材料科技集团威海股份有限公司 | A kind of flyash base polymers grouting material and preparation method thereof |
| CN109797655B (en) * | 2019-01-15 | 2020-11-03 | 包头市公路工程股份有限公司 | Construction method of intelligent bridge prestress tensioning and grouting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102206062A (en) * | 2011-03-31 | 2011-10-05 | 浙江五龙化工股份有限公司 | Post-tensioned and pre-stressed pipe grouting agent |
| CN102531502B (en) * | 2012-03-02 | 2013-10-30 | 河南省交通科学技术研究院有限公司 | Post-tensioning prestressed concrete porelike grouting agent and preparation method thereof, and grouting material |
| CN103030321B (en) * | 2012-12-26 | 2015-09-16 | 交通运输部公路科学研究所 | Swelling agent, post-stressed concrete pore passage grouting agent and grouting material |
| CN103288378A (en) * | 2013-05-14 | 2013-09-11 | 河北工业大学 | Novel prestressed duct grouting agent and preparation method thereof |
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