CN102320796A - Drier for plate-type unballasted track cement emulsified asphalt mortar - Google Patents
Drier for plate-type unballasted track cement emulsified asphalt mortar Download PDFInfo
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- CN102320796A CN102320796A CN201110250154A CN201110250154A CN102320796A CN 102320796 A CN102320796 A CN 102320796A CN 201110250154 A CN201110250154 A CN 201110250154A CN 201110250154 A CN201110250154 A CN 201110250154A CN 102320796 A CN102320796 A CN 102320796A
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- plate type
- sand
- emulsified bitumen
- unballasted track
- cement emulsified
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Abstract
The invention provides a drier for plate-type unballasted track cement emulsified asphalt mortar, and solves the problem of uncontrollability of present product quality. The drier comprises an aggregate, cement, and an admixture, and is characterized in that the aggregate comprises the following components by mass: 80-120 parts of natural sand, 10-30 parts of quartz sand, 0-20 parts of quartz powder. By adjusting the aggregate components in the drier, and substituting a part of natural sand by quartz sand and quartz powder, the invention allows the gradation to be easily controlled and adjusted, effectively increases the yield, reduces the requirements for sand source regions, facilitates railway construction and factory construction along railway lines, and reduces transportation cost. Meanwhile the invention can well ensure the performance of the drier in all aspects.
Description
Technical field
The invention belongs to plate-type ballastless track building technology field, relate in particular to a kind of siccative that in CRTS II type plate type unballasted track cement emulsified bitumen mortar, uses.
Background technology
CRTS II type plate type unballasted track cement emulsified bitumen mortar layer mainly plays the effect of filling, support, load and power transmission as the course between track plate and concrete bed or the supporting layer, and can be track certain rigidity and malleable is provided.The performance of cement asphalt mortar directly has influence on train operation quality, track structure weather resistance and operation maintenance cost, is one of key project material of high-speed railway construction.
CRTS II type plate type unballasted track cement emulsified bitumen mortar adopts the anionic emulsified bitumen, and quality is wayward, and is wayward with working order behind the siccative mix, affected by environment bigger.Therefore in the construction of CRTS II template formula non-fragment orbit, defectives such as laminated segregation appear in screed quality control difficulty easily.
Present existing cement emulsified asphalt mortar all exists ingredient requirement higher with siccative, cost is higher, and quality is wayward in the production process, and the production addressing requires high, and institute's sand cutting slurry is too responsive to environment, and filling plate quality is uneven.China Express Railway construction at present is in the flourish stage, but the high-speed railway cost is high, effectively reduces the high ferro construction cost and seems particularly important.Therefore improving the serviceability and the environmental compatibility of existing cement emulsified asphalt mortar with siccative, reduce production costs simultaneously, is one of problem to be solved such as present.
Summary of the invention
The objective of the invention is to propose the cement emulsified asphalt mortar siccative of a kind of easy production, the easy control of steady quality, make it can under the existing processes condition, reduce requirement, and guarantee the performance of siccative each side raw material.
For addressing the above problem, the present invention utilizes silica sand and silica powder to replace a part of natural sand as fine aggregate through the adjustment to aggregate element in the siccative; Make grating be easy to the control adjustment; Steady quality, and can effectively improve output, reduced requirement to the sand seedbed; Be beneficial to railway construction and found the factory along the line, reduce transportation cost.Can well guarantee simultaneously the performance of siccative each side, make it satisfy the requirement in " the provisional technical qualification of passenger dedicated railway line CRTS II type plate type unballasted track cement emulsified bitumen mortar " (No. [2008] 74, science and technology base).
The invention provides a kind of plate type unballasted track cement emulsified bitumen mortar siccative, this siccative comprises aggregate, cement, adulterant, it is characterized in that the mass parts of aggregate component is: natural sand 80-120, silica sand 10-30, silica powder 0-20.
Cement quality part is 50-70 among the present invention, and adulterant is 4-12.
Component of the present invention also comprises the aluminium powder of 0.002-0.005 mass parts, the fiber of 0-0.3 mass parts, the auxiliary rheological agents of 0-0.07 mass parts.
Among the present invention, said natural sand is common river sand, and its particle size range is 1.18-0.15mm.
Among the present invention, the fineness of said silica sand was the 0.15mm sieve aperture.
Among the present invention, the fineness of said silica powder was the 0.075mm sieve aperture.
Among the present invention, said cement is the P II type silicate cement that meets the GB175 standard.
Among the present invention, said adulterant is silicon ash, swelling agent, rapid hardening cement adulterant.Said silicon ash is for meeting the silicon ash of GB/T18736 standard; Said swelling agent is the calcium sulphoaluminate class swelling agent that meets the JC476 standard; Said rapid hardening cement is the quick hardening sulphoaluminate cement that meets the GB20472 standard.
Among the present invention, said aluminium powder is the aluminium powder that meets the GB/T2085.1 standard, and its fineness is 200 ~ 400 orders.
Among the present invention, said fiber is the monofilament polypropylene fibre, and its length is 4mm-10mm.
Among the present invention, said auxiliary rheological agents is CMC 99.5 (CMC) or Vltra tears (HPMC).
The present invention has following characteristics:
(1) because natural sand is only got the non-washed-out sand in the 0.15mm-1.18mm scope; Part is used silica sand in the aggregate, and is lower to the requirement in sand source, is beneficial to railway construction and draws materials nearby along the line and found the factory; And can effectively reduce silt content in the aggregate, improve the output of screening plant.
(2) owing to use silica sand and silica powder instead of part natural sand among the present invention, can effectively improve siccative intensity, reduce silt content, reduce the water requirement of siccative, guarantee the works fine performance of cement emulsified asphalt mortar.
(3) an amount of CMC 99.5 or the Vltra tears of adding among the present invention changes its sand cutting slurry rheological characteristics, improves slurry homogeneity and stability, improves serviceability, avoids the generation of bleeding and segregation demixing phenomenon.
Embodiment
Further set forth content of the present invention below in conjunction with embodiment, but content of the present invention is not limited only to following examples.
Embodiment 1:
The siccative of present embodiment is made up of natural river sand, silica sand, silica powder, cement, adulterant, aluminium powder, fiber, auxiliary rheological agents.Utilize the dry-mix production unit, mix in proportion raw materials such as sand, cement, adulterant, the packing siccative.The mass fraction of each component of siccative does
20 parts of 103 parts of silica sands of natural sand
55 parts of 10 parts of cement of silica powder
10.5 parts of adulterants (4 parts of quick hardening sulphoaluminate cements, 5 parts of calcium sulphoaluminate class swelling agents, 1.5 parts of silicon ashes)
0.3 part of 0.0023 part of polypropylene fibre of aluminium powder
0.05 part of CMC 99.5
Embodiment 2:
Present embodiment siccative component and embodiment one are basic identical, adjust slightly according to environment for use, to improve its serviceability.
The mass fraction of each component of siccative does
21 parts of 110 parts of silica sands of natural sand
51 parts of 12 parts of cement of silica powder
11.5 parts of adulterants (4 parts of quick hardening sulphoaluminate cements, 6 parts of calcium sulphoaluminate class swelling agents, 1.5 parts of silicon ashes)
0.3 part of 0.0029 part of polypropylene fibre of aluminium powder
0.06 part of CMC 99.5
Embodiment 3:
Present embodiment siccative component and embodiment one are basic identical, adjust slightly according to environment for use.
The mass fraction of each component of siccative does
20 parts of 105 parts of silica sands of natural sand
54 parts of 11 parts of cement of silica powder
11 parts of adulterants (4 parts of quick hardening sulphoaluminate cements, 5 parts of calcium sulphoaluminate class swelling agents, 2 parts of silicon ashes)
0.3 part of 0.027 part of polypropylene fibre of aluminium powder
0.058 part of CMC 99.5
Embodiment 4:
Present embodiment siccative component and embodiment one are basic identical, adjust slightly according to environment for use.
The mass fraction of each component of siccative does
21 parts of 110 parts of silica sands of natural sand
50 parts of 12 parts of cement of silica powder
13 parts of adulterants (5 parts of quick hardening sulphoaluminate cements, 6 parts of calcium sulphoaluminate class swelling agents, 2 parts of silicon ashes)
0.3 part of 0.0033 part of polypropylene fibre of aluminium powder
0.07 part of CMC 99.5
Added polypropylene fibre is the monofilament polypropylene fibre in the foregoing description; Can in concrete, form three-dimensional net structure; Play a kind of " support " effect, therefore can suppress the motion of aggregate effectively, reduced surperficial bleeding; Layering, the segregation that can effectively stop the cement emulsified asphalt mortar of mixing, the anti-fatigue performance and the life-span of improving mortar simultaneously.
The foregoing description adds resistance to compression, anti-folding, impervious, anticorrosion, the shock resistance that silicon ash in the adulterant can effectively improve mortar, has water conservation, prevents to emanate, the effect of bleeding, the work-ing life of significant prolongation mortar; Institute adds swelling agent can effectively offset the phase contraction of screed front and back, improves the anti-permeation cracking-resistant performance of screed; Institute adds quick hardening sulphoaluminate cement and can effectively improve the mortar early strength, reduces bleeding, the segregation layering of mortar.
Add aluminium powder in the foregoing description as air, the alkali reaction that can produce with cement hydration process produces the hydrogen microbubble; Improve the mortar homogeneity; Before mortar condenses, can produce appropriateness and expand, strengthen the compactness between screed and track plate, improve the screed anti-freezing property; Can reduce mortar bullet mould, improve the comfortableness of train operation.
Adding auxiliary rheological agents in the foregoing description is CMC 99.5, in mortar as thickening material, dispersion agent, stablizer.Various component dispersion suspensions are in metastable state in the mortar in slurry, add the time that can prolong their stable existences behind the CMC 99.5, before mortar condenses, and the generation of the demixing phenomenon of avoiding emanating.Improve the interface performance between mortar and the bed-plate track plate, improve cohesive force.
The foregoing description one is applicable to 20 ℃ ~ 35 ℃ of construction environments, and winter temperature generally is higher than 0 ℃ area; Embodiment two is applicable to 20 ℃ ~ 35 ℃ of construction environments, and winter minimum temperature is in-15 ℃ ~ 0 ℃ area; Embodiment three is applicable to 5 ℃ ~ 20 ℃ of construction environments, and winter temperature generally is higher than 0 ℃ area; Embodiment four is applicable to 5 ℃ ~ 20 ℃ of construction environments, and winter minimum temperature is in-15 ℃ ~ 0 ℃ area.
The siccative production cost that the present invention carried is lower; Grating is good, and good with the consistency of emulsified bitumen, the emulsified asphalt slurry of mixing can be in a stabilized uniform state for a long time; Various component uniform distribution in the mortar; Can not produce too big variation because of gravity or buoyancy, promptly variable grain in whole mortar be evenly distributed, relatively stable, the even particle gradient phenomenon of density unevenness can not appear.Stable performance, the working hour is long, the bleeding of not emanating, is difficult for layering, requirement that can be in fine meeting " the provisional technical qualification of passenger dedicated railway line CRTS II type plate type unballasted track cement emulsified bitumen mortar " (No. [2008] 74, science and technology base).
Claims (10)
1. plate type unballasted track cement emulsified bitumen mortar siccative, this siccative comprises aggregate, cement, adulterant, it is characterized in that the mass parts of aggregate component is: natural sand 80-120, silica sand 10-30, silica powder 0-20.
2. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 1 is characterized in that: cement quality part is 50-70, and the adulterant mass parts is 4-12.
3. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 1 and 2 is characterized in that: component also comprises the aluminium powder of 0.002-0.005 mass parts, the fiber of 0-0.3 mass parts, the auxiliary rheological agents of 0-0.07 mass parts.
4. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 1 and 2 is characterized in that: adulterant is silicon ash, swelling agent, rapid hardening cement adulterant.
5. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 1 and 2 is characterized in that: said natural sand is common river sand, and its particle size range is 1.18-0.15mm.
6. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 1 and 2 is characterized in that: the fineness of said silica sand was the 0.15mm sieve aperture.
7. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 1 and 2 is characterized in that: the fineness of said silica powder was the 0.075mm sieve aperture.
8. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 3 is characterized in that: said aluminium powder fineness is 200 ~ 400 orders.
9. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 3 is characterized in that: said fiber is the monofilament polypropylene fibre, and its length is 4mm-10mm.
10. plate type unballasted track cement emulsified bitumen mortar siccative according to claim 3 is characterized in that: said auxiliary rheological agents is CMC 99.5 (CMC) or Vltra tears (HPMC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110250154A CN102320796A (en) | 2011-08-29 | 2011-08-29 | Drier for plate-type unballasted track cement emulsified asphalt mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110250154A CN102320796A (en) | 2011-08-29 | 2011-08-29 | Drier for plate-type unballasted track cement emulsified asphalt mortar |
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| CN102320796A true CN102320796A (en) | 2012-01-18 |
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| CN201110250154A Pending CN102320796A (en) | 2011-08-29 | 2011-08-29 | Drier for plate-type unballasted track cement emulsified asphalt mortar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073235A (en) * | 2012-12-28 | 2013-05-01 | 中国铁道科学研究院金属及化学研究所 | Cement-emulsified asphalt mortar for slab tracks in severe cold areas |
| CN116425472A (en) * | 2023-04-13 | 2023-07-14 | 韶关学院 | Cement asphalt mortar, mixing program, railway ballast grouting program and grouting type track structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002685A1 (en) * | 1992-07-20 | 1994-02-03 | Allevard | Rail support device for unballasted railway track |
| CN101157536A (en) * | 2007-09-11 | 2008-04-09 | 中铁十七局集团有限公司 | Preparation method of asphalt cement mortar for railway ballastless track |
| CN101475349A (en) * | 2009-01-21 | 2009-07-08 | 中国铁道科学研究院铁道建筑研究所 | Vertical connected plate type unballasted track cement emulsified bitumen mortar |
-
2011
- 2011-08-29 CN CN201110250154A patent/CN102320796A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002685A1 (en) * | 1992-07-20 | 1994-02-03 | Allevard | Rail support device for unballasted railway track |
| CN101157536A (en) * | 2007-09-11 | 2008-04-09 | 中铁十七局集团有限公司 | Preparation method of asphalt cement mortar for railway ballastless track |
| CN101475349A (en) * | 2009-01-21 | 2009-07-08 | 中国铁道科学研究院铁道建筑研究所 | Vertical connected plate type unballasted track cement emulsified bitumen mortar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073235A (en) * | 2012-12-28 | 2013-05-01 | 中国铁道科学研究院金属及化学研究所 | Cement-emulsified asphalt mortar for slab tracks in severe cold areas |
| CN103073235B (en) * | 2012-12-28 | 2015-06-24 | 中国铁道科学研究院金属及化学研究所 | Cement-emulsified asphalt mortar for slab tracks in severe cold areas |
| CN116425472A (en) * | 2023-04-13 | 2023-07-14 | 韶关学院 | Cement asphalt mortar, mixing program, railway ballast grouting program and grouting type track structure |
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Address after: 611930 Chengdu high tech Zone, West Park, Tianhe Road, Sichuan Applicant after: Sichuan Southwest Jiaotong University Railway Development Co., Ltd. Address before: 611930, Ma 10, Huayuan Road, Sichuan, Chengdu Province, with 1 floor, 2 floor Applicant before: Sichuan Southwest Jiaotong University Railway Development Co., Ltd. |
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Application publication date: 20120118 |