CN103896546A - Environment-friendly multifunctional grouting agent - Google Patents
Environment-friendly multifunctional grouting agent Download PDFInfo
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- CN103896546A CN103896546A CN201410084863.1A CN201410084863A CN103896546A CN 103896546 A CN103896546 A CN 103896546A CN 201410084863 A CN201410084863 A CN 201410084863A CN 103896546 A CN103896546 A CN 103896546A
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- 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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
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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, relate in particular 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, when construction, adopts cement, water, water reducer, swelling agent etc. to carry out scene preparation.The grouting material of on-the-spot preparation must meet: water cement ratio is 0.40 ~ 0.45, mixes appropriate water reducer, can be reduced to 0.35 minimum water cement ratio; The maximum bleeding rate of grouting material must not exceed 3%, and bleeding should again be absorbed by mortar in 24h; The viscosity of grouting material should be controlled at 14 ~ 18s; Grouting material possesses certain expansion before solidifying; The ultimate compression strength of grouting material test block is not less than 50MPa.Field by using cement, various admixture and water preparation grouting material, conventionally have that various admixture compatibility are bad, the problem such as cement and water reducer bad adaptability, cause duct grouting to have following serious problems: (1) poor, the poor fluidity of slurry quality stability, flow losses are fast, and volume stability is bad; (2) fresh paste bleeding is large, and in the layering of easily emanating, slurry, micro-foam is many, and mobility is bad, and time of coagulation is not moderate, when slurry mud jacking, often have some setbacks, and easily plugging, 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, unreal with presstressed reinforcing steel bonding, even have disconnected line in slurry, and duct is not full, and the outer slurry of high point plays 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 scene preparation has carried out certain improvement, adopt cement, water and multiple admixture to prepare, efficiently solve the compatible bad problem of on-the-spot various admixture, but because China is geographical vast, each place is for the production of the starting material difference of cement, and the cement otherness of producing is very large, thereby the problem of cement and admixture bad adaptability still exists.
Abroad, the on-the-spot grouting material using of duct grouting is generally premixing commodity grouting material, and premixing commodity grouting material is the product of batch production, pass through in advance test design, then be made into uniform powder in factory, be packaged into bag, only need add water and stir into slurry by explanation at the construction field (site).Adopt that premixing commodity grouting material can effectively solve that various admixture compatibility are bad, the problem such as cement and water reducer bad adaptability.
Enforcement in 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, guarantees prestressed concrete structure safety; Make prestressed reinforced concrete have good bonding, guarantee 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 the most of complicated process of preparation of grouting agent in the market, addition content is high, cost is high, there is certain defect in most of product performance simultaneously.
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 addressing the above problem; environment protection multifunctional grouting agent of the present invention, is characterized in that: it makes after being mixed 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 producing in iron manufacturing process, its specific surface area>=400 m
2/ kg, GaO content are 40 ~ 50%, AI
2o
3content is 15 ~ 25% dry powder.
Described steel-making slag powder refers to by oxygen top blown converter steel making or at the industry byproduct of electric arc steelmaking gained, its specific surface area is 350 ~ 600m
2the dry powder that/kg, fGaO content are 2 ~ 6%, MgO content is 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
2the flyash that/kg, GaO content are 20 ~ 40%, fGaO content is 5 ~ 9%.
Described ultra tiny calcium powder dirt refers to the raw material dust that carries out along with coal gas in blast furnace ironmaking process and high-temperature zone intense reaction and the particulate footpath dry gas cleaning that produces and the product that obtains.
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 atmosphere; (2) easily reaction is active good; (3) there is certain chemical toxicity.Exploitation not only can make valuable resource be fully used to its comprehensive utilization, can also alleviate the pollution to environment.And adopt cement solidification easily to float, toxic substance is not only still all thought the most at present at home in the world, the safest, effective measures.
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 is lubricated " effect, and physics water-reducing effect is remarkable, and water-reducing rate is up to more than 9%.Find that through repeatedly cement paste and glue sand test it not only can improve strength of cement mortar, also can reduce cement normal consistency, there is water reducing ability (referring to table 1).
Table 1
3, the present invention, 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, the in the situation that of 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(referring to 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 jacking body performance are 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 makes after being mixed 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 makes after being mixed 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 makes after being mixed 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 makes after being mixed 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 makes after being mixed 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 producing in iron manufacturing process, its specific surface area>=400 m
2/ kg, GaO content are 40 ~ 50%, AI
2o
3content is 15 ~ 25% dry powder.
Steel-making slag powder refers to by oxygen top blown converter steel making or at the industry byproduct of electric arc steelmaking gained, slag is cooling through water spray, then after natural drying ageing first quarter moon, pass through again fragmentation, screening, oven dry and powder-grinding process, and before each operation, carry out that deferrization process makes, its specific surface area is 350 ~ 600m
2the dry powder that/kg, fGaO content are 2 ~ 6%, MgO content is 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 to process gained industry byproduct, claim again FGD gypsum.
High-calcium fly ass refers to the higher flyash of a kind of calcium oxide that fuel-burning power plant adopts brown coal, sub-bituminous coal to give off as fuel, is a kind of material that not only contains some amount hydraulicity crystal mineral but also contain lateral reactivity material.Compare with ordinary fly ash, its fineness more also has water-reducing effect, early strength development is fast.Its specific surface area is 400 ~ 600m
2the flyash that/kg, GaO content are 20 ~ 40%, fGaO content is 5 ~ 9%.
Ultra tiny calcium powder dirt refers to the raw material dust that carries out along with coal gas in blast furnace ironmaking process and high-temperature zone intense reaction and the particulate footpath dry gas cleaning that produces and the product that obtains, and its main component is calcium oxide, magnesium oxide, aluminium sesquioxide and silicon-dioxide.
Claims (7)
1. environment protection multifunctional grouting agent, is characterized in that: it makes after being mixed 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.
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 producing in iron manufacturing process, its specific surface area>=400 m
2/ kg, GaO content are 40 ~ 50%, AI
2o
3content is 15 ~ 25% dry powder.
4. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: described steel-making slag powder refers to by oxygen top blown converter steel making or at the industry byproduct of electric arc steelmaking gained, its specific surface area is 350 ~ 600m
2the dry powder that/kg, fGaO content are 2 ~ 6%, MgO content is 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
2the flyash that/kg, GaO content are 20 ~ 40%, fGaO content is 5 ~ 9%.
7. environment protection multifunctional grouting agent as claimed in claim 1, is characterized in that: described ultra tiny calcium powder dirt refers to the raw material dust that carries out along with coal gas in blast furnace ironmaking process and high-temperature zone intense reaction and the particulate footpath dry gas cleaning that produces and the product that obtains.
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| CN103896546B CN103896546B (en) | 2015-07-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478326A (en) * | 2014-11-28 | 2015-04-01 | 中交二航武汉港湾新材料有限公司 | Prestressed pipeline grouting material and preparation method thereof |
| 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 |
| 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 |
| CN109797655A (en) * | 2019-01-15 | 2019-05-24 | 包头市公路工程股份有限公司 | Bridge prestress intelligent tensioning mud jacking system construction engineering method |
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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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478326A (en) * | 2014-11-28 | 2015-04-01 | 中交二航武汉港湾新材料有限公司 | Prestressed pipeline grouting 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 |
| CN109797655A (en) * | 2019-01-15 | 2019-05-24 | 包头市公路工程股份有限公司 | Bridge prestress intelligent tensioning mud jacking system construction engineering method |
| 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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| CN103896546B (en) | 2015-07-22 |
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Effective date of registration: 20190509 Address after: Room 201 and 204, second floor, 200 Langongping Road, Qilihe District, Lanzhou City, Gansu Province Patentee after: Gansu Zhitong Yunxiang Traffic Technology Co., Ltd. Address before: 730050 No. 202 Langongping Road, Qilihe District, Lanzhou City, Gansu Province Patentee before: Gansu Zhitong Science & Technology Engineering Detection Consultation Co., Ltd. |