CN101508546B - Novel winter cement based grouting agent for railway concrete beam support - Google Patents
Novel winter cement based grouting agent for railway concrete beam support Download PDFInfo
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- CN101508546B CN101508546B CN200910131849A CN200910131849A CN101508546B CN 101508546 B CN101508546 B CN 101508546B CN 200910131849 A CN200910131849 A CN 200910131849A CN 200910131849 A CN200910131849 A CN 200910131849A CN 101508546 B CN101508546 B CN 101508546B
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- steel slag
- concrete beam
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a winter cement-based grouting material for railroad concrete beam supports, which is formed by mixing and stirring cement, sand, finely ground steel slag powder, a swelling agent, an accelerator, a retarder, a water reducing agent and an active agent. The parts by weight of the components are as follows: 100 parts of cement, 100-250 parts of sand, 5-25 parts of finely ground steel slag powder, 3-20 parts of swelling agent, 0.1-3 parts of accelerator, 0.2-2 parts of water reducing agent, 0.1-3 parts of retarder and 1-5 parts of active agent. Finely ground converter slag which is naturally stored for 3-6 months is adopted for the finely ground steel slag powder and the specific surface area is 400-600m<2>/kg; the total content of the calcium oxide and magnesium oxide in the finely ground steel slag powder is 5-15%. The cement-based grouting material can cause the grouting material to be used for construction at the temperature of 0-15 DEG C; the fluidity of the grouting material is still more than 240mm after being mixed for 35min and the 2h compression strength is larger than 20MPa; besides, the grouting material can endure the extreme temperature of-40 DEG C in the north of China, with strength not reduced and stable later strength; the volume of the grouting material slightly expands during hardening process, which can ensure the poured space is dense and full.
Description
Technical field
The present invention relates to a kind of railway concrete beam support winter cement based grouting agent, be applicable to beams of concrete support groutings usefulness such as railroad bridge, Light Railway Bridge, highway bridge and urban viaduct.
Background technology
Along with the enhancing of overall national strength, China Express Railway net construction plan will progressively put into practice, and expectation China before the year two thousand twenty will tentatively build up speed per hour and reach the high-speed railway net more than the 200km/h; Country strengthens the investment to construction work simultaneously, and highway bridge and overhead road of city also will be greatly developed.In this Large scale construction, there are a large amount of prefabricated case beams to need lifting, and behind the case beam hoisted in position, need the connecting portion of case beam and bridge pad be in the milk, supporting and the fixed case beam, the stablizing of guard box beam.Just can unclamp the case beam after waiting the pouring mortar sclerosis owing to suspension bridge is confidential and reaching 20MPa, the lifting of following a slice beam, thereby be the lifting speed of guard box beam, the bearing pouring mortar need have higher early strength and good placeability ability.Because the bearing pouring mortar solved the key issue in the mechanized construction, improved speed of application, so the bearing pouring mortar is from once the fervent concern that this area relevant personnel occur causing, and in practical application, has broad application prospects.The setting and harden temperature influence of present cement-based material injection material is bigger, and under low temperature or subzero temperature condition, injection material has the problem that suffers early stage freeze injury, thereby need under positive temperature, construction could produce early strength.Because China is former vast, each ground temperature differs greatly, and at severe cold areas such as the north, subzero temperature weather often occurs, is the speed that guarantees bridge construction, and the bearing pouring mortar need satisfy pouring construction and the early strength requirement under this regional subzero temperature condition.Because China is less for the research of bearing cement-based grouting material in winter, an existing common injection material product and incompatibility subzero temperature construct in a winter difficult problem.
Summary of the invention
The object of the present invention is to provide a kind of railway concrete beam support winter cement based grouting agent, this bearing cement-based grouting material is constructed under the subzero temperature spare in the winter time and the intensity of early stage needs is provided.
Technical scheme of the present invention is: it is characterized in that it is by cement, sand, ground steel slag, swelling agent, setting accelerator, retardant, water reducer and promoting agent mix together, and the shared weight part of each composition is: cement: 100 parts; Sand: 100-250 part, ground steel slag: 5-25 part, swelling agent: 3-20 part; Setting accelerator: 0.1-3 part; Water reducer: 0.2-2 part, retardant: 0.1-3 part, promoting agent: 1-5 part;
Described ground steel slag employing is levigate stores 3-6 month naturally with interior bessemer furnace slag, specific surface area 400-600m
2/ kg, and quicklime and magnesian total content 5-15% in the described ground steel slag.
Described cement is selected from silicate cement, aluminosulfate cement and the composite mixture of its both arbitrary proportions.
Described swelling agent is selected from any or two or more mixing in alumite plumping agent, anhydrous calcium sulphoaluminate swelling agent, lime swelling agent, the bulking agent of calcium aluminate, when two or more mixes, is any proportioning.
Described setting accelerator is calcium nitrite, calcium formiate and the composite mixture of its both arbitrary proportions.
Described water reducer is poly carboxylic acid or melamine class.
Described retardant is Sunmorl N 60S or Hydrocerol A.
Described promoting agent is white lake or Quilonum Retard.
Described sand is river sand or machine-processed silica sand, and fineness is 30～100 orders.
One of preparation method of above-mentioned a kind of railway concrete beam support winter cement based grouting agent: be all raw material proportionally weighing good after, add stirrer together and stirred simultaneously 20～350 seconds.
It is lower to the present invention is directed to winter temperature; Mortar is rapid heat dissipation in construction process; And suffer diseases such as subzero temperature freeze injury after the cooling easily; Adopt free calcium oxide and Natural manganese dioxide aquation in the ground steel slag to produce heat; Simultaneously white lake or Quilonum Retard alkalescence promoting agent excites that other pozzolanic activity materials also produce heat in the slag, and the heat that this dual mode produces can most ofly replenish the hydration heat of cement amount to the heat radiation of environment subzero temperature too much and produce the temperature required deficiency of pouring material sclerosis, in addition; Auxiliary cover parcel after with cotton-wadded quilt, electric blanket or other lagging materials and facility material being poured into; Guarantee the about 5 ℃ of maintenance 0～2h of positive temperature,, thereby can guarantee well that bearing is with the construction of novel winter cement based grouting agent under the negative temperature condition and early stage normal sclerosis with the early stage HS of assurance injection material under the subzero temperature condition.Simultaneous oxidation calcium and Natural manganese dioxide also are a kind of expansion sources; Can make winter cement based grouting agent all produce microdilatancy with the later stage in early days; Especially can make winter cement based grouting agent keep stable in the rate of expansion of long-term (60d and 180d); Eliminate injection material itself and shrink disadvantageous effect, in the high-speed railway of China's Large scale construction, have broad application prospects case beam absolute altitude.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to following embodiment.
Through participate in heat compensation bearing mortar that hydrated cementitious the produces calorific loss in the subzero temperature construct environment in the winter time with ground steel slag, promoting agent and setting accelerator three; Guarantee the normal sclerosis of injection material; Reach the bearing mortar and still can produce early strength as early as possible under the subzero temperature environment in the winter time, do not influence the purpose of bridge erection.With ground steel slag, promoting agent and setting accelerator is that the railway concrete beam support winter cement based grouting agent basic mechanical design feature of key ingredient is listed in the table 1.
Table 1 is the winter cement based grouting agent basic mechanical design feature of key ingredient with ground steel slag, promoting agent and setting accelerator
Table 1 mesosilicic acid salt cement is normal silicate 42.5 cement, and ground steel slag adopts the levigate bessemer furnace slag of storing 3 months naturally of Wuhan Iron and Steel Plant, and specific surface area is 500m
2/ kg, quicklime and magnesian content are 12%; Setting accelerator is a calcium formiate; Promoting agent is a white lake; Swelling agent is a common lime class swelling agent.
Embodiment 7:
A kind of railway concrete beam support winter cement based grouting agent (use temperature is-25 ℃), it is mainly by cement, sand, ground steel slag, swelling agent, setting accelerator, and retardant, water reducer, promoting agent and water mix together; The shared weight part of each raw material is: cement: 100 parts, and sand: 200 parts, ground steel slag: 25 parts; Swelling agent: 14 parts, setting accelerator: 2 parts, water reducer: 1.8 parts; Retardant: 1.3 parts, promoting agent: 4 parts.Described swelling agent is selected from alumite plumping agent; Described cement is strong 52.5 silicate cements morning; Setting accelerator is a calcium nitrite; Promoting agent is a Quilonum Retard; Water reducer is a melamine class water reducer; Retardant is a Sunmorl N 60S; Described sand is common thin river sand, and fineness is 30～100 orders.
All raw material proportionally weighing good after, add stirrer together and stirred simultaneously 100 seconds.
Cement of the present invention, sand, ground steel slag, swelling agent, setting accelerator, the bound value and the interval value of retardant, water reducer and promoting agent raw material can both be realized the present invention, just do not enumerate embodiment one by one at this.
Claims (6)
1. a railway concrete beam support winter cement based grouting agent is characterized in that it is to be mixed together by cement, sand, ground steel slag, swelling agent, setting accelerator, retardant, water reducer and promoting agent, and the shared weight part of each composition is:
Cement: 100 parts, sand: 100-250 part,
Ground steel slag: 5-25 part, swelling agent: 3-20 part,
Setting accelerator: 0.1-3 part, water reducer: 0.2-2 part,
Retardant: 0.1-3 part, promoting agent: 1-5 part;
Described ground steel slag employing is levigate stores 3-6 month naturally with interior bessemer furnace slag, specific surface area 400-600m
2/ kg, and the quicklime in the described ground steel slag and Natural manganese dioxide total content be 5-15%, described promoting agent is white lake or Quilonum Retard.
2. a kind of railway concrete beam support winter cement based grouting agent according to claim 1 is characterized in that: described cement is selected from silicate cement, aluminosulfate cement and the composite mixture of its both arbitrary proportions.
3. a kind of railway concrete beam support winter cement based grouting agent according to claim 1; It is characterized in that: described swelling agent is selected from any or two or more mixing in alumite plumping agent, anhydrous calcium sulphoaluminate swelling agent, lime swelling agent, the bulking agent of calcium aluminate; When two or more mixes, be any proportioning.
4. a kind of railway concrete beam support winter cement based grouting agent according to claim 1 is characterized in that: described setting accelerator is calcium nitrite, calcium formiate or the composite mixture of its both arbitrary proportions.
5. a kind of railway concrete beam support winter cement based grouting agent according to claim 1 is characterized in that: described water reducer is poly carboxylic acid or melamine class.
6. a kind of railway concrete beam support winter cement based grouting agent according to claim 1 is characterized in that: described retardant is Sunmorl N 60S or Hydrocerol A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910131849A CN101508546B (en) | 2009-04-09 | 2009-04-09 | Novel winter cement based grouting agent for railway concrete beam support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910131849A CN101508546B (en) | 2009-04-09 | 2009-04-09 | Novel winter cement based grouting agent for railway concrete beam support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101508546A CN101508546A (en) | 2009-08-19 |
| CN101508546B true CN101508546B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910131849A Active CN101508546B (en) | 2009-04-09 | 2009-04-09 | Novel winter cement based grouting agent for railway concrete beam support |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2632871B1 (en) * | 2010-10-29 | 2018-02-21 | HeidelbergCement AG | Hydraulic activator for slag sand |
| CN102276218B (en) * | 2011-05-20 | 2013-03-13 | 中国铁道科学研究院铁道建筑研究所 | Low negative temperature post-tensioned beam prestress pipeline mudjacking material |
| AT511689B1 (en) * | 2011-07-08 | 2016-05-15 | Holcim Technology Ltd | HYDRAULIC BINDER |
| CN103058549B (en) * | 2013-01-04 | 2014-07-02 | 江苏博特新材料有限公司 | Retarder matched with magnesia expansive agent and preparation method thereof |
| DE102013007937B4 (en) * | 2013-05-07 | 2016-09-01 | Franken Maxit Mauermörtel Gmbh & Co | Use of a mineral, hydraulic binder in fresh water-containing masses, as well as in mineral, hydraulic dry mortar, in mineral fresh mortar and fresh concrete |
| CN103482926B (en) * | 2013-09-02 | 2015-02-11 | 苏州科技学院 | Cement-based no-shrinkage grouting material |
| CN103553456B (en) * | 2013-10-15 | 2015-03-04 | 句容市睿远科技有限公司 | Self-compaction high-performance concrete for high-speed rail construction |
| DE102014002621A1 (en) * | 2014-02-25 | 2015-08-27 | Rent-A-Scientist Gmbh | Winter mortar, and method of making and using same |
| CN104446259A (en) * | 2014-12-09 | 2015-03-25 | 鞍钢集团矿业公司 | Anchor rod anchoring agent applied to reinforcing underground broken rock body |
| CN104529338A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Ultrahigh-strength cement-based grouting material |
| CN108147776B (en) * | 2016-12-05 | 2021-04-20 | 北京市建筑工程研究院有限责任公司 | High-performance grouting material for low-temperature steel bar connection and preparation method thereof |
| CN109896803A (en) * | 2019-04-18 | 2019-06-18 | 山东高速高广公路有限公司 | Slightly expanded concrete suitable for Wavelike steel webplate |
| CN110642576B (en) * | 2019-11-13 | 2022-03-01 | 中国建筑材料科学研究总院有限公司 | Insulating expansion grouting mortar, preparation method thereof and application thereof in prefabricated staircase construction with adjustable step height |
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| CN101508546A (en) | 2009-08-19 |
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