CN106626024A - Cast-in-place concrete sleeper construction technology - Google Patents
Cast-in-place concrete sleeper construction technology Download PDFInfo
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- CN106626024A CN106626024A CN201611086131.1A CN201611086131A CN106626024A CN 106626024 A CN106626024 A CN 106626024A CN 201611086131 A CN201611086131 A CN 201611086131A CN 106626024 A CN106626024 A CN 106626024A
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- China
- Prior art keywords
- sleeper
- mortar
- epoxy resin
- cast
- place concrete
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention particularly discloses a cast-in-place concrete sleeper construction technology. The technology includes the construction processes of formwork manufacturing and assembly, steel rib framework manufacturing and assembly, concrete pouring, vibration, concrete steam curing, specimen manufacturing and strength inspection, accessory detachment, product demoulding, finished product inspection, marking and storage and transport. The technology is characterized by further including the construction process a of repairing finish products after product demoulding, wherein the construction process of repairing the finish products includes the process b of heating and moistening the surfaces of the finished products, the process c of repairing gel defects and cracks of sleepers in a mortar leveling mode, and the process d of polishing the repaired sleepers, and mortar used in the process c is epoxy resin mortar. After the construction process is completed, a part of short sleepers with apparent quality problems are repaired so as to reduce the rejection rate of the short sleepers and increase the percent of pass of the short sleepers.
Description
Technical field
The present invention relates to technical field of concrete construction, and in particular to a kind of cast-in-place concrete sleeper construction technology.
Background technology
Cast-in-place concrete sleeper is extensive used in the traffic infrastructure of China, and the short sleeper that subway is used then belongs to
One kind in cast-in-place concrete sleeper.With the fast development of city underground, as the short sleeper of subway line infrastructure component
Demand it is growing.In China, Xin Kai and the subway line of increase are up to thousands of miles, need to be with short sleeper amount up to number
Ten million block, total value is more up to billions of units.Due to short sleeper in track trend, railway roadbed is attractive in appearance and train operational safety
Etc. aspect all play conclusive effect, and with the raising of Metro Design speed per hour, the also more and more higher of the requirement to sleeper such as exists
Require in appearance as clear water (only smearing receipts light by hawk before concrete final set) and dimensionally require as high accuracy.
But, it is desirable to prevent the surface quality defect of short sleeper completely, such as：Micro-crack, scab, fold, the ears or side handles of a utensil, layering with
And be mingled with, only it is difficult to accomplish with existing technology, because in prior art, concrete surface or internal generation micro-crack etc.
Mass defect belongs to a comprehensive problem, and the raw material of concrete, environment temperature, control temperature, operating technology and
Curing condition etc. has relation.And, once occurring in that waste product in prior art, then directly abandon and scrap without making again
With.Therefore, on the one hand above-mentioned technological deficiency limits the raising of short sleeper finished products rate, on the other hand also limit sleeper industry
Development.
The content of the invention
The purpose of the present invention is directed to the deficiencies in the prior art, there is provided a kind of cast-in-place coagulation for improving short sleeper apparent mass
Native sleeper construction technology, and then improve sleeper finished products rate.
To reach above-mentioned purpose, the base case of the present invention is：Cast-in-place concrete sleeper construction technology, including template system
Peace, framework of steel reinforcement system peace, filling concrete, vibration, type concrete steam maintenance, test specimen make and ruggedness test, unload accessory, product
The work progress of the demoulding, product inspection, mark and accumulating, it is characterised in that also including carrying out finished product repairing after product stripping
Work progress a, the work progress that the finished product is repaired includes carrying out finished surface process b of surface heating moistening, then
Process c of gels defects and crack repair by the way of mortar is floating to sleeper, should be carried out to the sleeper after repairing
Process d of grinding process, the mortar in process c is epoxy resin mortar, and the epoxy resin mortar includes epoxy resin
120g, dimethylbenzene 8ml, dibutylester 5ml～8ml, ethylenediamine 5ml～10ml, sand (drying) 600g, lithopone 150g, cement
80g。
The principle and effect of this programme：This programme mainly increased inferior to part in existing short sleeper production process
The mending course of sleeper, the mistake repaired including process b that surface wettability heating is carried out to defect ware sleeper and to short sleeper
Journey c, wherein, a kind of epoxy resin mortar of speciality of applicant's invention has been used during c.According to making for process b and process c
With method, can complete to repair the short sleeper that part has apparent mass problem, to reduce the percent defective of short sleeper, improve
The qualification rate of short sleeper.When the surface of short sleeper is moistened in the range of said temperature, epoxy resin mortar can be made with short rail
Pillow surface has satisfactory adhesive strength, and surface heated temperature is necessary condition for 18 DEG C～22 DEG C in process b, only
Only under the conditions of said temperature, the case hardness of the short sleeper after repairing just can meet the requirements.
Further, surface heated temperature is 21 DEG C in process b.The surface of short sleeper carries out wet in the range of said temperature
During profit, can make epoxy resin mortar that there is highest adhesive strength with short sleeper surface.
Further, the dibutyl ester in epoxy resin mortar is 6ml.Can make to repair using the epoxy resin mortar of above-mentioned match ratio
Short sleeper case hardness after benefit is higher, mortar strength of glass is higher and polishing intensity is higher.
Further, the ethylenediamine in epoxy resin mortar is 8ml.Can make to repair using the epoxy resin mortar of above-mentioned match ratio
Short sleeper case hardness after benefit is higher, mortar strength of glass is higher and polishing intensity is higher.
Specific embodiment
Describe a kind of cast-in-place concrete sleeper construction technology, other embodiment and contrast in detail by taking embodiment 1 as an example below
Example embodies in table 2 and table 3, and unshowned part is same as Example 1：
Embodiment 1
Cast-in-place concrete sleeper construction technology, including following work progress：
Template system is pacified：Plank is first cleaned, then the brushing interleaving agent in template, such as releasing agent, pacified in advance in punching block
Tubing.
Framework of steel reinforcement system is pacified：Stirrup and principal rod are processed according to design requirement, framework of steel reinforcement is made, then by framework of steel reinforcement
It is attached in template.
Filling concrete, vibration：To check that whether correct framework of steel reinforcement, sleeve pipe, baffle lay before perfusion, while checking
Whether vibrating head is intact, and the oil removal on the debris and reinforcing bar in model is clean, can carry out filling concrete.Cloth is equal
After even, respectively with operation before and after the plug-in type vibrating rod point of 2 30mm, each vibrating head inserts one every 0.2m or so for model both sides
Secondary, depth should be to model bottom, vibrations 20 seconds or so every time.Shock club operation should be inserted soon pulls out slowly, inclines in insertion concrete, no
Can be defined by concrete surface no longer effervescent, surface bleeding and nothing significantly sinking with punching block perpendicular contact.Should not hit during vibration
Move various accessories.Face Shi Zhen bottoms are received after vibration with trowel form open roof.
Type concrete steam maintenance, test specimen make and ruggedness test：Maintenance tarpaulin is covered and must assure that steam is unimpeded in paulin, paulin
Cloth must have with a distance from enough from concrete surface, it is impossible to directly cover on model, make special stand and support tarpaulin, to reach
The unimpeded effect of steam in paulin, along model longitudinal direction two ends and middle each arrangement metallic thermometer one, each table temperature is shown during maintenance
Differ to be advisable less than 5 DEG C.Per mould, production makes 3 groups of 150 × 150 × 150mm test specimens per order of classes or grades at school, for checking concrete demoulding
Intensity and 28 days intensity.Take after the 3rd tank that the concrete for making test specimen should be from after going into operation, test specimen is with after shake table vibration
Conserve together with product, curing condition is identical with product.Test piece maintenance position is placed on the most weak position of steam.Test specimen is made
Should in time number later, then be conserved.Do 28 days ruggedness tests of concrete and play the test specimen of mould on a production line with product one
After the completion of playing the conservation system maintenance by regulation, proceed to totally 28 days are conserved under standard conditions immediately.
Unload accessory, product stripping：Check whether bolt all draws off before the demoulding.Sleeper is hung with demoulding special hoisting bar
Exposed steel bar, sleeper of slinging makes sleeper depart from model, must not note during the demoulding and damages sleeper.The sleeper that the demoulding goes out is hung into pile
Place, all spreads out.Straddle truck will drink spike and put down gently during code heap, must not crash, it is to avoid damage sleeper.Sleeper should be whole by batch stacking
Together, pile up sleeper 4 for per layer, place supporting every wooden 2, be placed on sleeper support rail face outside, be V-arrangement at the top of wood, its top
Domatic domatic with sleeper bottom identical, specification is 1200mm × 50mm × 70mm, it is desirable to which each interlayer is right up and down every wooden position of the fulcrum
Together.
Finished product is repaired：The defect of sleeper two ends and concrete surface, it is all less than standard (1.5 times of permissions in table 1
Value) require defect can repair.Heating moistening is carried out including cleaning finished surface and then to finished surface, can be using continuous
The mode for pouring pouring hot water to sleeper surface carries out heating moistening, and it is 21 DEG C to maintain sleeper surface temperature for 18 DEG C～22 DEG C, optimum
The present embodiment employs optimum 23 DEG C.Then to the gels defects and crack repair of sleeper by the way of mortar is floating.
The present embodiment employs epoxy resin mortar, and epoxy resin mortar reference formulation is as follows：Epoxy resin 120g, dimethylbenzene 8ml, two
Fourth fat 5ml～8ml, ethylenediamine 5ml～10ml, sand (drying) 600g, lithopone 150g, cement 80g.Before repairing, need to repair
The sleeper of benefit should concentrate pile, concentrate and repair, and perform status indicator.Sleeper after repairing should be polished, it is desirable to corner angle point
It is bright, until meeting the dimensional requirement that product specifies.
Product inspection, mark and accumulating：Pre stressed concrete sleeper finished product is tested, then qualified pre stressed concrete sleeper is entered
Line flag, the pre stressed concrete sleeper of mark is finally stored or shipped according to dispatch list.
Table 1
Each portion's size acceptable quality level of sleeper requires the regulation that should meet table 1.
The epoxy resin mortar of table 2 tests proportioning
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Sleeper surface temperature | 21℃ | 18℃ | 22℃ | 21℃ | 21℃ |
| Epoxy resin | 120g | 120g | 120g | 120g | 120g |
| Dimethylbenzene | 8ml | 8ml | 8ml | 8ml | 8ml |
| Dibutyl ester | 6ml | 5ml | 8ml | 4ml | 9ml |
| Ethylenediamine | 8ml | 5ml | 10ml | 4ml | 10ml |
| Sand (drying) | 600g | 600g | 600g | 600g | 600g |
| Cement | 80g | 80g | 80g | 80g | 80g |
| Lithopone | 150g | 150g | 150g | 150g | 150g |
Detection after the sleeper mending of table 3
To sum up analyze：As shown in table 3, embodiment 1, embodiment 2 meet the requirements with result shown in embodiment 3, therefore, lead to
The repairing temperature and proportioning for crossing setting can be repaired out in satisfactory sleeper, and embodiment 1, the table of the sleeper after repairing
Surface hardness, mortar strength of glass and polishing intensity are above standard, belong to optimum.
Compared with Example 4, the consumption of ethylenediamine and dibutyl ester in embodiment 4 has been reduced embodiment 1, by test
Show that the sleeper case hardness that the epoxy quality mortar in embodiment 4 is repaired out cannot meet design requirement with polishing intensity.
Compared with Example 5, the consumption of ethylenediamine and dibutyl ester in embodiment 5 increased embodiment 1, by test
Show that the sleeper case hardness that the epoxy quality mortar in embodiment 4 is repaired out cannot meet design requirement with polishing intensity.
Above-described is only embodiments of the invention, this application claims protection domain should be with its claim
Appearance is defined, and specific embodiment in specification etc. records the content that can be used for explaining claim.
Claims (4)
1. cast-in-place concrete sleeper construction technology, including template system peace, framework of steel reinforcement system peace, filling concrete, vibration, concrete
Steam curing, test specimen making and ruggedness test, the work progress for unloading accessory, product stripping, product inspection, mark and accumulating,
Characterized in that, also including carrying out the work progress a of finished product repairing after product stripping, the work progress that the finished product is repaired includes
Process b of surface heating moistening is carried out to finished surface, then to the gels defects of sleeper and is split by the way of mortar is floating
Process c that line is repaired, process d of grinding process is carried out to the sleeper after repairing, and the mortar in process c is asphalt mixtures modified by epoxy resin
Fat mortar, surface heated temperature is 18 DEG C～22 DEG C in process b, and the epoxy resin mortar includes epoxy resin
120g, dimethylbenzene 8ml, dibutylester 5ml～8ml, ethylenediamine 5ml～10ml, sand 600g, lithopone 150g, cement 80g.
2. cast-in-place concrete sleeper construction technology according to claim 1, it is characterised in that surface adds in process b
The temperature of heat is 21 DEG C.
3. cast-in-place concrete sleeper construction technology according to claim 1 and 2, it is characterised in that the epoxy resin sand
Dibutyl ester in slurry is 6ml.
4. cast-in-place concrete sleeper construction technology according to claim 3, it is characterised in that in the epoxy resin mortar
Ethylenediamine be 8ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086131.1A CN106626024A (en) | 2016-11-30 | 2016-11-30 | Cast-in-place concrete sleeper construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086131.1A CN106626024A (en) | 2016-11-30 | 2016-11-30 | Cast-in-place concrete sleeper construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106626024A true CN106626024A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611086131.1A Pending CN106626024A (en) | 2016-11-30 | 2016-11-30 | Cast-in-place concrete sleeper construction technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497005A (en) * | 2020-04-21 | 2020-08-07 | 中铁上海工程局集团有限公司 | Process manufacturing method of automatic installation equipment of double-block type sleeper |
| CN114538862A (en) * | 2021-12-22 | 2022-05-27 | 中铁十局集团第二工程有限公司 | Concrete defect repairing material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103638A (en) * | 1985-05-28 | 1985-12-20 | 铁道部第三工程公司 | Material for binding concrete structure |
| CN1427123A (en) * | 2002-08-21 | 2003-07-02 | 中铁养马河工程股份有限公司 | Manufacturing technology of straddle type single rail prestressed reinforced concrete rail beam |
| CN102162209A (en) * | 2010-12-31 | 2011-08-24 | 北京中铁房山桥梁有限公司 | High-speed turnout switch tie for speed of 350km per hour and manufacturing method thereof |
| CN105884253A (en) * | 2016-04-12 | 2016-08-24 | 武汉理工大学 | Quick-repairing polymer mortar and application |
-
2016
- 2016-11-30 CN CN201611086131.1A patent/CN106626024A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103638A (en) * | 1985-05-28 | 1985-12-20 | 铁道部第三工程公司 | Material for binding concrete structure |
| CN1427123A (en) * | 2002-08-21 | 2003-07-02 | 中铁养马河工程股份有限公司 | Manufacturing technology of straddle type single rail prestressed reinforced concrete rail beam |
| CN102162209A (en) * | 2010-12-31 | 2011-08-24 | 北京中铁房山桥梁有限公司 | High-speed turnout switch tie for speed of 350km per hour and manufacturing method thereof |
| CN105884253A (en) * | 2016-04-12 | 2016-08-24 | 武汉理工大学 | Quick-repairing polymer mortar and application |
Non-Patent Citations (2)
| Title |
|---|
| 北京市市政工程局: "《市政工程施工手册 第2卷 专业施工技术（一）》", 31 December 1995, 中国建筑工业出版社 * |
| 朱足州: "《冶金铁路运输 工务分册》", 30 November 2005, 四川科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497005A (en) * | 2020-04-21 | 2020-08-07 | 中铁上海工程局集团有限公司 | Process manufacturing method of automatic installation equipment of double-block type sleeper |
| CN114538862A (en) * | 2021-12-22 | 2022-05-27 | 中铁十局集团第二工程有限公司 | Concrete defect repairing material |
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| CB03 | Change of inventor or designer information |
Inventor after: Sun Liang Inventor after: Sun Zhen Inventor after: Qin Zhongjie Inventor after: Liu Zhiming Inventor after: Chen Jian Inventor after: Wang Jiang Inventor after: Huang Shuiliang Inventor before: Sun Zhen Inventor before: Qin Zhongjie Inventor before: Xiang Shouyi |
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Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |