CN102503268A - Cement emulsifying asphalt mortar for repairing CRTS II type ballastless track and preparation method thereof - Google Patents
Cement emulsifying asphalt mortar for repairing CRTS II type ballastless track and preparation method thereof Download PDFInfo
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- CN102503268A CN102503268A CN2011103266484A CN201110326648A CN102503268A CN 102503268 A CN102503268 A CN 102503268A CN 2011103266484 A CN2011103266484 A CN 2011103266484A CN 201110326648 A CN201110326648 A CN 201110326648A CN 102503268 A CN102503268 A CN 102503268A
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Abstract
The invention discloses cement emulsifying asphalt mortar for repairing a CRTS II type ballastless track, which is prepared from raw materials comprising the following components in part by weight: 555 to 565 parts of cement, 870 to 900 parts of sand, 200 to 215 parts of emulsified asphalt, 140 to 145 parts of water and 33.3 to 36.7 parts of admixture; and the cement comprises sulfo-aluminate cement accounting for 90 percent of the total weight of the cement, common silicate cement accounting for 5 percent of the total weight of the cement and a bearing mortar grouting material accounting for 5 percent of the total weight of the cement, and the admixture comprises a poly-carboxylic acid water reducing agent accounting for 96 percent of the total weight of the admixture, calcium chloride accounting for 2 percent of the total weight of the admixture, melamine accounting for 1 percent of the total weight of the admixture and calcium sulfate accounting for 1 percent of the total weight of the admixture. The suitable range of the temperature is 15 to 35 DEG C, the initial setting time is greater than 60 minutes, and the strength can reach the qualified index of 28 days, which is specified by a specification, within 12 hours; and moreover, the index of the working performance and the index of the endurance performance can meet the requirements of a current specification standard and a construction process, and the construction efficiency of a ballastless track is enhanced.
Description
Technical field
The present invention relates to a kind of construction material, specifically is a kind of cement emulsified asphalt mortar of the CRTS of being used for II type non-fragment orbit bed course maintenance.
Background technology
At home, especially beginning of this century last century Mo, along with the fast development of high speed railway construction, the development of non-fragment orbit is advanced by leaps and bounds.Introduce, in the digestion, the basis that absorbs through innovation again, develop non-fragment orbits such as CRTS I, II be board-like, and progressively in Qin-Shen Passenger Line, Zheng Xi line, Wu Guangxian, Beijing-Tianjin inter-city, Tianjin Qin line, Beijing-Shanghai line, Beijing-to-Shijiazhuang line, obtain large-scale application.Under the cyclic reverse loading and weather environmental activity along with train, local broken, cracking takes place in cement emulsified asphalt mortar bed course ecto-entad, need carry out repairing work.Maintenance track plate bedding mortar normally carries out under the condition that guarantees operation, often needs to keep in repair the same day to recover current next day, and servicing time is very limited.At present domesticly use the cement emulsified asphalt mortar performance requriements, do not have concrete operative norm with mortar composition, material category, technical indicator, maintenance process etc. yet keeping in repair to maintenance.Conventional cement emulsified asphalt mortar setting time is long, gain in strength is slow, can't satisfy the time requirement of track plate bed course maintenance work.For the emergency work that possibly occur etc. the time there are the Special Circumstances of requirement, the conventional requirement that can not satisfy rapid construction with cement emulsified asphalt mortar equally.
Summary of the invention
The objective of the invention is to solve the problem that the cement-emulsified asphalt solidification time is long, gain in strength is slow, a kind of CRTS is provided
IIThe cement emulsified asphalt mortar and the compound method thereof of the maintenance of type non-fragment orbit.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: CRTS
IIThe cement emulsified asphalt mortar of type non-fragment orbit maintenance, by comprising that following materials of weight proportions processes:
Cement 555～565, sand 870～900, emulsified bitumen 200～215, water 140～145, admixture 33.3～36.7; Described composite cement comprises: account for the aluminosulfate cement, 5% ordinary Portland cement of gross weight 90% and 5% bearing mortar grouting material and form; Composite additive is by the polycarboxylate water-reducer that accounts for admixture gross weight 96%, 2% calcium chloride, and 1% trimeric cyanamide, 1% calcium sulfate is formed.
Core technology of the present invention comprises: (1) through selecting different cement matrix substituted for silicon acid salt cements for use, preparation with the quick hardening sulphoaluminate be main, normal silicate be the composite cement grog system of assisting as gelling material, improved the mortar early strength.(2) through additive complex, use with polycarboxylate water-reducer to be staple, villaumite, vitriol etc. is the composite additive of early strong composition, has effectively shortened the time of coagulation of mortar, has improved the early strength of mortar.
Prepare the method for above-mentioned cement emulsified asphalt mortar, may further comprise the steps:
(1) take by weighing composite cement and sand according to proportioning, fully evenly the back is subsequent use as siccative for mix; According to proportioning calcium chloride, trimeric cyanamide and calcium sulfate fully are dissolved in the polycarboxylate water-reducer, it is subsequent use to be made into composite additive;
(2) in stirrer, drop into emulsified bitumen earlier, add admixture and water again, start stirrer then; 60 rev/mins of control rotating speeds, and pick up counting, stir after 1 minute; Improve stirrer rotating speed to 120 rev/min; In 3 minutes, siccative is sprinkled in the stirrer continuously equably, all raw materials add accomplishes continued stirring 2 minutes, promptly gets product.
This preparation method: (1) mixing speed is low, and mortar is difficult for producing bubble, and the air content index is qualified, need not to add skimmer.(2) the siccative adition process is difficult for producing the siccative conglomeration, and the mortar mix is uniform and stable.
The cement emulsified asphalt mortar of CRTS II type non-fragment orbit maintenance of the present invention; Temperature applicable range is 15～35 ℃; Presetting period is greater than 60min, can be in 12 hours intensity reach 28 days qualified indexs of regulation and stipulation, and serviceability index, endurance quality index can satisfy the requirement of current specifications standard and construction technology; Improved the non-fragment orbit operating efficiency, for maintenance non-fragment orbit bedding mortar lays the foundation.Lower cost for material, extensive market.Its PT result sees table 1.
Table 1
Embodiment
Embodiment 1
CRTS
IIThe raw material of the cement emulsified asphalt mortar of type non-fragment orbit maintenance is formed: cement 555kg, sand 870 kg, emulsified bitumen 200 kg, water 140 kg, admixture 33.3 kg; Described cement is made up of the bearing mortar grouting material of the aluminosulfate cement that accounts for cement gross weight 90%, 5% ordinary Portland cement and 5%; Described admixture is by the polycarboxylate water-reducer that accounts for admixture gross weight 96%; 2% calcium chloride, 1% trimeric cyanamide, 1% calcium sulfate is formed.
The preparation method of above-mentioned cement emulsified asphalt mortar:
(1) take by weighing cement and sand according to proportioning, fully evenly the back is subsequent use as siccative for mix; According to proportioning calcium chloride, trimeric cyanamide and calcium sulfate fully are dissolved in the polycarboxylate water-reducer, it is subsequent use to be made into admixture;
(2) in stirrer, drop into emulsified bitumen earlier, add admixture and water again, start stirrer then; 60 rev/mins of control rotating speeds, and pick up counting, stir after 1 minute; Improve stirrer rotating speed to 120 rev/min; In 3 minutes, siccative is sprinkled in the stirrer continuously equably, all raw materials add accomplishes continued stirring 2 minutes, promptly gets product.
Embodiment 2
CRTS
IIThe raw material of the cement emulsified asphalt mortar of type non-fragment orbit maintenance is formed: cement 565kg, sand 900 kg, emulsified bitumen 215 kg, water 145 kg, admixture 36.7 kg; Described cement is made up of the bearing mortar grouting material of the aluminosulfate cement that accounts for cement gross weight 90%, 5% ordinary Portland cement and 5%; Described admixture is by the polycarboxylate water-reducer that accounts for admixture gross weight 96%; 2% calcium chloride, 1% trimeric cyanamide, 1% calcium sulfate is formed.
The preparation method is with embodiment 1.
Embodiment 3
CRTS
IIThe raw material of the cement emulsified asphalt mortar of type non-fragment orbit maintenance is formed: cement 560 kg, sand 880 kg, emulsified bitumen 212 kg, water 142kg, admixture 35.0kg; Described cement is made up of the bearing mortar grouting material of the aluminosulfate cement that accounts for cement gross weight 90%, 5% ordinary Portland cement and 5%; Described admixture is by the polycarboxylate water-reducer that accounts for admixture gross weight 96%; 2% calcium chloride, 1% trimeric cyanamide, 1% calcium sulfate is formed.
The preparation method is with embodiment 1.
Embodiment 4
CRTS
IIThe raw material of the cement emulsified asphalt mortar of type non-fragment orbit maintenance is formed: cement 558 kg, sand 890 kg, emulsified bitumen 215 kg, water 141kg, admixture 36.4kg; Described cement is made up of the bearing mortar grouting material of the aluminosulfate cement that accounts for cement gross weight 90%, 5% ordinary Portland cement and 5%; Described admixture is by the polycarboxylate water-reducer that accounts for admixture gross weight 96%; 2% calcium chloride, 1% trimeric cyanamide, 1% calcium sulfate is formed.
The preparation method is with embodiment 1.
Claims (2)
1. CRTS
IIThe cement emulsified asphalt mortar of type non-fragment orbit maintenance is characterized in that by comprising that following materials of weight proportions processes: cement 555～565, sand 870～900, emulsified bitumen 200～215, water 140～145, admixture 33.3～36.7; Described cement is made up of the bearing mortar grouting material of the aluminosulfate cement that accounts for cement gross weight 90%, 5% ordinary Portland cement and 5%; Described admixture is by the polycarboxylate water-reducer that accounts for admixture gross weight 96%; 2% calcium chloride, 1% trimeric cyanamide, 1% calcium sulfate is formed.
2. the method for preparing the described cement emulsified asphalt mortar of claim 1 is characterized in that may further comprise the steps:
(1) take by weighing cement and sand according to proportioning, fully evenly the back is subsequent use as siccative for mix; According to proportioning calcium chloride, trimeric cyanamide and calcium sulfate fully are dissolved in the polycarboxylate water-reducer, it is subsequent use to be made into admixture;
(2) in stirrer, drop into emulsified bitumen earlier, add admixture and water again, start stirrer then; 60 rev/mins of control rotating speeds, and pick up counting, stir after 1 minute; Improve stirrer rotating speed to 120 rev/min; In 3 minutes, siccative is sprinkled in the stirrer continuously equably, all raw materials add accomplishes continued stirring 2 minutes, promptly gets product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110326648 CN102503268B (en) | 2011-10-25 | 2011-10-25 | Cement emulsifying asphalt mortar for repairing CRTS II type ballastless track and preparation method thereof |
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| CN 201110326648 CN102503268B (en) | 2011-10-25 | 2011-10-25 | Cement emulsifying asphalt mortar for repairing CRTS II type ballastless track and preparation method thereof |
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| CN102503268B CN102503268B (en) | 2013-06-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924018A (en) * | 2012-11-26 | 2013-02-13 | 长安大学 | Repair material for bituminous pavement pot holes and method for preparing same |
| CN105541239A (en) * | 2015-12-23 | 2016-05-04 | 济南大学 | Organic modified cement based patch mortar |
| CN107417217A (en) * | 2017-06-12 | 2017-12-01 | 哈尔滨工业大学 | Thin iron tailings CA mortars for road surface normal temperature Rapid-Repair and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101914328A (en) * | 2010-07-30 | 2010-12-15 | 江苏尼高科技有限公司 | Special interface agent for CRTS concrete base plate of ballastless track and preparation method thereof |
| CN102093000A (en) * | 2010-12-10 | 2011-06-15 | 浙江工业大学 | CRTS II type slab ballastless track cement asphalt (CA) mortar |
-
2011
- 2011-10-25 CN CN 201110326648 patent/CN102503268B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101914328A (en) * | 2010-07-30 | 2010-12-15 | 江苏尼高科技有限公司 | Special interface agent for CRTS concrete base plate of ballastless track and preparation method thereof |
| CN102093000A (en) * | 2010-12-10 | 2011-06-15 | 浙江工业大学 | CRTS II type slab ballastless track cement asphalt (CA) mortar |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924018A (en) * | 2012-11-26 | 2013-02-13 | 长安大学 | Repair material for bituminous pavement pot holes and method for preparing same |
| CN102924018B (en) * | 2012-11-26 | 2014-10-22 | 长安大学 | Repair material for bituminous pavement pot holes and method for preparing same |
| CN105541239A (en) * | 2015-12-23 | 2016-05-04 | 济南大学 | Organic modified cement based patch mortar |
| CN107417217A (en) * | 2017-06-12 | 2017-12-01 | 哈尔滨工业大学 | Thin iron tailings CA mortars for road surface normal temperature Rapid-Repair and preparation method thereof |
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| CN102503268B (en) | 2013-06-05 |
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