CN102050595A - Compound modifier of emulsified asphalt used for high-speed railway and preparation method thereof - Google Patents
Compound modifier of emulsified asphalt used for high-speed railway and preparation method thereof Download PDFInfo
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- CN102050595A CN102050595A CN 201010515273 CN201010515273A CN102050595A CN 102050595 A CN102050595 A CN 102050595A CN 201010515273 CN201010515273 CN 201010515273 CN 201010515273 A CN201010515273 A CN 201010515273A CN 102050595 A CN102050595 A CN 102050595A
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- emulsified bitumen
- composite modifier
- high ferro
- emulsified asphalt
- emulsified
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Abstract
The invention relates to a compound modifier of emulsified asphalt used for high-speed railways, and a preparation method thereof. The ingredients of the compound modifier are as follows (by weight): inorganic salts: 30 to 40, high molecular polymers: 35 to 45, auxiliary agents: 0 to 3, and water: 12 to 35. The compound modifier replaces the single-component stabilizer in the emulsified asphalt of the prior art. The compound modifier has the advantages of stable performance, low use amount and wide application range; the operation is easy during use; the emulsified asphalt with high stability and wide applicability can be prepared; and the compound modifier is applied to the cement and emulsified asphalt mortar used for the high speed railways, and meanwhile can reduce about 30% of the cost of emulsified asphalt.
Description
Technical field
The present invention relates to the construction material field, be specifically related to a kind of high ferro emulsified bitumen composite modifier and preparation method thereof.
Background technology
Cement emulsified asphalt mortar is the key components that high-speed railway plate-type ballastless track structural elasticity is adjusted layer, it is mixed through special process at normal temperatures by starting material such as emulsified bitumen, dry mash, admixtures and forms, wherein emulsified bitumen is the key ingredient of mortar, and its every performance has directly influenced the performance of cement emulsified asphalt mortar.
Along with developing rapidly of China's high ferro cause, the consumption of emulsified bitumen grows with each passing day, and quality of himself and performance requriements also improve constantly.Present used emulsified bitumen exist poor stability, with problem such as material bad adaptability differently.The method of traditional raising emulsified bitumen stability is to add certain amount of stabilizer, and it comprises inorganic stabilizers and organic stabilizer.Wherein inorganic stabilizers is generally inorganic salt, as calcium chloride, magnesium chloride etc., the adding of inorganic salt, can increase intergranular electrostatic double layer effect, improve intergranular mutual repulsive force, slow down the cohesion speed between the particle, improve the emulsifying capacity of emulsifying agent, improve the stability of emulsion, but adhesivity between emulsion and the aggregate and bitumen ductility are had bad influence; Organic stabilizer mainly is the polymer associated complex, and it can form firm micella in emulsion, significantly improve the viscosity of emulsified bitumen, improves cement-emulsified bituminous material separation degree.At present, a kind of when emulsified bitumen is produced in two kinds of stablizers of an intrant, when but the emulsified bitumen that only adds a kind of stablizer preparation is applied on the high ferro, can not guarantee that its adaptability with different cement, sand etc. is good, cause the use properties of mortar not reach standard, perfusion effect is relatively poor, easily bleeding and layering, can only be by kind of regulating admixture and the performance that volume is regulated cement emulsified asphalt mortar, but this can not fundamentally solve the problem of cement emulsified asphalt mortar pouring quality, and has increased the cost of mortar.Therefore, be badly in need of seeking a kind of composite modifier, improve the use properties of high ferro, improve the adaptability of emulsified bitumen, and then improve the pouring quality of cement emulsified asphalt mortar with emulsified bitumen.
Summary of the invention
The present invention be directed to the problems referred to above, a kind of novel high ferro composite modifier and preparation method thereof is provided.This properties-correcting agent has improved the performance of emulsified bitumen self, as improves ductility and package stability etc.; Simultaneously this composite modifier has improved the adaptability of emulsified bitumen, mixes applicable to material variously and makes well behaved cement emulsified asphalt mortar, is applicable in the region of different weathers and uses, and has improved production efficiency and economic benefit.
Technical solution of the present invention is:
A kind of high ferro composite modifier of emulsified bitumen, it is characterized in that: the weight part of its each component of constitutive material is:
Inorganic salt 30-40 part
High molecular polymer 35-45 part
Auxiliary agent 0-3 part
Water 12-35 part
Described high ferro is characterized in that with the composite modifier of emulsified bitumen: described inorganic salt are selected from ammonium salt, magnesium salts, calcium salt, the aluminium salt two or more arbitrarily than mixture.
The described high ferro composite modifier of emulsified bitumen, it is characterized in that: described high molecular polymer is selected from two or more in multiple silicon shrinking alcohol sodium solution, polymer polyvinyl alcohol substited glue, Natvosol, polyoxyethylene aliphatic alcohol ether, the polyvinyl alcohol.
The described high ferro composite modifier of emulsified bitumen, it is characterized in that: described auxiliary agent is selected from one or more in amino acid type amphoteric surface active agent, betaine type amphoteric surfac-tant, the imidazoline type amphoterics.
The described high ferro composite modifier of emulsified bitumen, it is characterized in that: the volume of described composite modifier is 0.1～1.0% of an emulsified bitumen total amount.
Described high ferro is characterized in that: specifically comprise the steps: with the preparation method of the composite modifier of emulsified bitumen
(1) take by weighing high molecular polymer by formula rate and drop in the reactor, high-speed stirring, and be warming up to 65-72 ℃, stirred 20-30 minute;
(2) by formula rate inorganic salt are joined step (1) and stir in the sufficient material, and stirred miscible 55-65 minute, make it fully miscible;
(3) the abundant miscible material of step (2) is cooled to room temperature, under stirring fast, slowly adds the auxiliary agent of formula rate, make its thorough mixing, can obtain high ferro emulsified bitumen composite modifier finished product after stirring.
The composite modifier of the present invention development is intended to solve the existing problem of high ferro with emulsified bitumen, utilize organic stabilizer and the inorganic stabilizers not same-action in emulsified bitumen, has realized the high ferro Preparation of Emulsification Asphalt of high stability, strong adaptability.Its advantage is specific as follows:
(1) high efficiency.This composite modifier has multiple function, as inorganic salt stable emulsion bituminous function is arranged, and makes it be beneficial to long-term extensive the storage or long-distance transport; Inorganic salt can also strengthen CA mortar early strength; Multiple silicon shrinking alcohol sodium etc. has froth breaking, presses down the bubble function, has also improved the salt resistance and the high thermal resistance of emulsified bitumen because of its special silanol structure, and then has enlarged the use range of emulsified bitumen; Polymer polyvinyl alcohol substited glue etc. can increase the emulsified bitumen viscosity, improves the bounding force of itself and aggregate; In addition, also have synergistic effect between multiple silicon shrinking alcohol sodium, polymer polyvinyl alcohol substited glue and the calcium ions and magnesium ions etc., can improve the cracking resistance tensile property of CA mortar etc.Therefore, composite modifier has promptly been avoided the detrimentally affect of single stable agent generation, has reduced the total amount of additive again, has simplified the Production Flow Chart of high ferro with emulsified bitumen greatly.Therefore the present invention can effectively reduce high ferro emulsified bitumen cost on the whole, increases economic efficiency.
(2) broad applicability.Because of the various compositions in this composite modifier have synergistic effect (as multiple silicon shrinking alcohol sodium and polyvalent mineral salt), make this composite modifier can adapt to the high ferro emulsified bitumen that various starting material make preferably.Avoid the complicated flow processs such as admixture, debugging prescription of continuous searching coupling, improved productivity effect.
(3) good with other starting material intermiscibilities.Improved the correlated performance of emulsified bitumen itself,, other performances of cement emulsified asphalt mortar have been had no adverse effect as ductility and package stability etc.Production technique is simple, and is pollution-free, is easy to industrialization.
Embodiment
In order to understand the present invention better, the present invention is elaborated below in conjunction with embodiment.But content of the present invention not only is confined to the following examples.
High ferro provided by the invention emulsified bitumen composite modifier mainly comprises the content of two aspects after the use.
Embodiment
1, preparation composite modifier
High ferro provided by the invention emulsified bitumen composite modifier mainly is made up of inorganic salt, organic polymer and auxiliary agent, and its preparation method is as follows:
(1) take by weighing polymer polyvinyl alcohol substited glue 11g, the sodium silanolate solution 29g that contracts, water 27g drops in the reactor, under high-speed stirring, with this mixture heating up to 70 ℃;
(2) add ammonium chloride 15g then in (1) gained mixture solution, magnesium chloride 15g fully stirs, and miscible 60 minutes, makes its whole dissolvings;
(3) (2) gained mixture is cooled to room temperature, under stirring fast, slowly adds amphoterics 3g, make its thorough mixing, can obtain high ferro emulsified bitumen composite modifier finished product after stirring.
2, preparation high ferro emulsified bitumen
Take by weighing anionic emulsifier 5g, be dissolved in the warm water of 70 ℃ of 587g, to wherein adding 8g composite modifier of the present invention, be mixed with emulsifier aqueous solution then, put into 60～70 ℃ water bath with thermostatic control.Take by weighing Korea S SK-90# bi tumenf orr oad 900g, pitch is heated to 130～145 ℃.Start colloidal mill, the 600g emulsifier aqueous solution is joined in the colloidal mill, then the 900g pitch that heats is joined in the colloidal mill, emulsification 1min prepares the 1# emulsified bitumen.
Simultaneously, adopt identical method, in emulsion, do not add composite modifier, prepare the 2# emulsified bitumen.
According in " the provisional technical qualification of passenger dedicated railway line CRTS II type plate type unballasted track cement emulsified bitumen mortar " to the requirement and the experimental technique of emulsified bitumen, every index of 1# and 2# emulsified bitumen is measured, the result is as shown in table 1.
The assay of table 1 emulsified bitumen
The detected result of contrast 1# and 2# emulsified bitumen as can be known, 1# emulsified bitumen behind the adding composite modifier meets the requirement of provisional technical qualification to emulsified bitumen fully, and because the adding of composite modifier, improve the ductility of the package stability and the evaporation residue of emulsified bitumen greatly, and then improved the use properties of this emulsified bitumen.
3, the mix of cement emulsified asphalt mortar
Adopt the 1# emulsified bitumen mix cement emulsified asphalt mortar that adds composite modifier, and irritate firm and hard and test.At first in agitator kettle, take by weighing the 200kg emulsified bitumen, start stirrer, under stirring at a slow speed, 30rpm, adds the 128g defoamer again, after aqua to be mixed stirs to wherein adding 148kg water, stirring velocity is transferred to 80rpm, then after wherein adding dry mash 1200kg, adding dry mash, to wherein adding 2kg water reducer solution, adjust stirring velocity then to 120rpm, continuously stirring 2min.At last the stirrer rotating speed is adjusted to 30rpm, after stirring half a minute, the conventional index of test mortar pours into then.
Mix the system cement emulsified asphalt mortar initial stage every index as follows:
The initial stage index of table 2 mix cement emulsified asphalt mortar
Annotate: (1) D
5The expression mortar goes out the machine divergence; D
30Divergence when the expression mortar goes out machine 30min; t
280Represent the time required when the mortar divergence reaches 280mm.
Take the dish out of the pot and take off the plate effect after effect and the perfusion by observing cement emulsified asphalt mortar among this embodiment, harden fruit as can be known by taking off, it is good to adopt this emulsified bitumen to mix the mortar performance of system, pours into full; Plate face look even, and whole plate is brown, and surfacing does not have blister, no through hole; Section is closely knit, no layering.
Claims (6)
1. a high ferro is with the composite modifier of emulsified bitumen, and it is characterized in that: the weight part of its each component of constitutive material is:
Inorganic salt 30-40 part
High molecular polymer 35-45 part
Auxiliary agent 0-3 part
Water 12-35 part
2. high ferro according to claim 1 is characterized in that with the composite modifier of emulsified bitumen: described inorganic salt are selected from ammonium salt, magnesium salts, calcium salt, the aluminium salt two or more arbitrarily than mixture.
3. the high ferro according to claim 1 composite modifier of emulsified bitumen, it is characterized in that: described high molecular polymer is selected from two or more in multiple silicon shrinking alcohol sodium solution, polymer polyvinyl alcohol substited glue, Natvosol, polyoxyethylene aliphatic alcohol ether, the polyvinyl alcohol.
4. the high ferro according to claim 1 composite modifier of emulsified bitumen, it is characterized in that: described auxiliary agent is selected from one or more in amino acid type amphoteric surface active agent, betaine type amphoteric surfac-tant, the imidazoline type amphoterics.
5. the high ferro according to claim 1 composite modifier of emulsified bitumen, it is characterized in that: the volume of described composite modifier is 0.1～1.0% of an emulsified bitumen total amount.
6. the described high ferro of claim 1 is characterized in that: specifically comprise the steps: with the preparation method of the composite modifier of emulsified bitumen
(1) take by weighing high molecular polymer by formula rate and drop in the reactor, high-speed stirring, and be warming up to 65-72 ℃, stirred 20-30 minute;
(2) by formula rate inorganic salt are joined step (1) and stir in the sufficient material, and stirred miscible 55-65 minute, make it fully miscible;
(3) the abundant miscible material of step (2) is cooled to room temperature, under stirring fast, slowly adds the auxiliary agent of formula rate, make its thorough mixing, can obtain high ferro emulsified bitumen composite modifier finished product after stirring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010515273 CN102050595B (en) | 2010-10-21 | 2010-10-21 | Compound modifier of emulsified asphalt used for high-speed railway and preparation method thereof |
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| CN102050595B CN102050595B (en) | 2013-03-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525102A (en) * | 2013-09-23 | 2014-01-22 | 句容市睿远科技有限公司 | Emulsified asphalt for high-speed rail and preparation method thereof |
| CN107954635A (en) * | 2018-01-04 | 2018-04-24 | 山东科达基建有限公司 | Asphalt concrete modifying agent |
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| WO2007096690A1 (en) * | 2006-02-22 | 2007-08-30 | Advanced Technologies (For) Road Applications (A.T.R.A.) Sa | Anti-ice and anti-snow composition for road pavings |
| CN101054470A (en) * | 2007-05-25 | 2007-10-17 | 重庆师范大学 | Emulsification asphalt used for high speed railway or light rail plate type slag-free orbit CA mortar |
| CN101074351A (en) * | 2006-05-19 | 2007-11-21 | 中国石油化工股份有限公司 | Hot-melt asphalt adhesive and its production |
| CN101613533A (en) * | 2008-06-28 | 2009-12-30 | 西北师范大学 | Polymer chemically-modified asphalt composition of high temperature storage stable and preparation method thereof |
| CN101787215A (en) * | 2010-01-25 | 2010-07-28 | 重庆鹏方路面工程技术研究院有限公司 | Spraying modified salinized emulsified asphalt for preventing icing on road surface and preparing method thereof |
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2010
- 2010-10-21 CN CN 201010515273 patent/CN102050595B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007096690A1 (en) * | 2006-02-22 | 2007-08-30 | Advanced Technologies (For) Road Applications (A.T.R.A.) Sa | Anti-ice and anti-snow composition for road pavings |
| CN101074351A (en) * | 2006-05-19 | 2007-11-21 | 中国石油化工股份有限公司 | Hot-melt asphalt adhesive and its production |
| CN101054470A (en) * | 2007-05-25 | 2007-10-17 | 重庆师范大学 | Emulsification asphalt used for high speed railway or light rail plate type slag-free orbit CA mortar |
| CN101613533A (en) * | 2008-06-28 | 2009-12-30 | 西北师范大学 | Polymer chemically-modified asphalt composition of high temperature storage stable and preparation method thereof |
| CN101787215A (en) * | 2010-01-25 | 2010-07-28 | 重庆鹏方路面工程技术研究院有限公司 | Spraying modified salinized emulsified asphalt for preventing icing on road surface and preparing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525102A (en) * | 2013-09-23 | 2014-01-22 | 句容市睿远科技有限公司 | Emulsified asphalt for high-speed rail and preparation method thereof |
| CN107954635A (en) * | 2018-01-04 | 2018-04-24 | 山东科达基建有限公司 | Asphalt concrete modifying agent |
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| CN102050595B (en) | 2013-03-27 |
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