CN103508694A - Cement-emulsified asphalt mortar modifier as well as preparation method thereof - Google Patents
Cement-emulsified asphalt mortar modifier as well as preparation method thereof Download PDFInfo
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- CN103508694A CN103508694A CN201210214202.7A CN201210214202A CN103508694A CN 103508694 A CN103508694 A CN 103508694A CN 201210214202 A CN201210214202 A CN 201210214202A CN 103508694 A CN103508694 A CN 103508694A
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- emulsified asphalt
- correcting agent
- asphalt mortar
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Abstract
The invention belongs to the technical field of cement mortar modifiers, and relates to a cement-emulsified asphalt mortar modifier as well as a preparation method thereof. The modifier comprises 40-60% of a high molecular polymer, 0.1-5% of a nonionic emulsifier, 0.1-5% of a cationic emulsifier, 0.1-10% of an early strength agent, 0.05-1% of an acid and the balance of water. The modifier provided by the invention is stable in property and good in compatibility with asphalt, can improve the low temperature property of asphalt and improve the low temperature ductility and the freezing-resistance, is good in malaxation with mortar and can remarkably prolong the workable time and improve the early strength of CA (Cement-Asphalt) mortar. The modifier has the characteristics that the preparation method is simple and convenient, equipment is simple and raw materials are cheap and easily obtained. The modifier added into the emulsified asphalt is not demulsified, so that the stability of the system is increased, and the modifier particularly has a better effect of improving the low temperature property of the emulsified asphalt.
Description
Technical field
The invention belongs to cement mortar modifier technical field, relate to a kind of cement emulsified asphalt mortar properties-correcting agent and preparation method thereof.
Background technology
The existing cement emulsified asphalt mortar of preparing mainly contains two kinds of methods: the one, thereby prepare modified emulsifying asphalt, make modifying mortar; The 2nd, the direct modified mortar of polymer emulsion.Modified emulsifying asphalt be prepared with two kinds of methods: the one, direct Emulgating polymers bitumen process; The 2nd, Polymer Modified Asphalt Emulsion method.Because directly Emulgating polymers bitumen process has higher requirements to emulsifying agent, emulsifying process and emulsifying device, so most economical method is easily Polymer Modified Asphalt Emulsion method.The preparation method of Polymer Modified Asphalt Emulsion has outer doping and inner blending method.Outer doping is that polymer emulsion directly adds and in finished product emulsified bitumen, through stirring, becomes modified emulsifying asphalt.Inner blending method is that polymer emulsion emulsification preparation together with pitch becomes modified emulsifying asphalt.
In Chinese patent CN02160148.8, the preparation method of modified emulsifying asphalt is inner blending method, is applicable to the application of highway aspect.Polymer latex milk content in Chinese patent CN200910099082.9 is 8-10%, does not reach polymer emulsion performance index requirement in " unit plate type non-fragment orbit emulsification asphalt cement mortar technical qualification ".As road and the common polymer emulsion of modifying mortar, have styrene-butadiene latex, polychloroprene latex, acrylic ester emulsion, benzene emulsion, EVA emulsion etc., it is good with emulsified bitumen compatibleness that these emulsions have, and what have is good with mortar compatibleness, and the two can not be taken into account.The properties-correcting agent of applying in high-speed rail construction now only focuses on improving the performance of mortar, has ignored the consistency of pitch and properties-correcting agent, causes the performance of pitch to can not get improving.
Summary of the invention
The object of the invention is to provide a kind of cement emulsified asphalt mortar properties-correcting agent and preparation method thereof, and this properties-correcting agent both can add in emulsified bitumen and prepare modified emulsifying asphalt, can in cement emulsified asphalt mortar mix process, directly add again.This properties-correcting agent and bitumen compatibility are good, can improve pitch low-temperature performance, good with mortar compatibleness again, have improved the over-all properties of mortar early strength, operable time and frost resistance.
Cement emulsified asphalt mortar properties-correcting agent of the present invention, by the raw material of following mass percent, made:
High molecular polymer 40 ~ 60%, nonionic emulsifying agent 0.1 ~ 5%, cationic emulsifier 0.1 ~ 5%, hardening accelerator 0.1 ~ 10%, acid 0.05 ~ 1%, surplus is water.
Described high molecular polymer is styrene-butadiene latex, nitrile rubber or polychloroprene latex, preferred styrene-butadiene latex, and this styrene-butadiene latex is the poly-type of negatively charged ion breast, and solid content is 40-60%, and combined styrene content is 20 ~ 50%.This styrene-butadiene latex and bitumen compatibility are good, have better resistance to low temperature and frost resistance.
Described nonionic emulsifying agent is polyethenoxy ether class and/or lipid acid lipid.
One or more in the preferred polyoxyethylene octylphenol ether of described polyethenoxy ether class, polyoxyethylene nonylphenol ether, fatty alcohol-polyoxyethylene ether, n-Hexadecane Soxylat A 25-7, hydroxylation alkyl polyoxyethylene ether, sylvic acid Soxylat A 25-7 or lauric acid Soxylat A 25-7, the oxygen ethyl number of Soxylat A 25-7 is 8 ~ 30, preferably polyoxyethylene octylphenol ether or polyoxyethylene nonylphenol ether.
The preferred sorbitan fatty acid ester of described lipid acid lipid.
Described cationic emulsifier is quaternary ammonium salts, one or more in preferred octadecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, cetyl pyridinium positively charged ion ammonium chloride, tetradecyl amido propyl dimethyl benzyl ammonium chloride, most preferably octadecyl trimethyl ammonium chloride.
Described hardening accelerator is calcium chloride, sodium-chlor, sodium sulfate, vitriolate of tartar, Sodium Nitrite, calcium formiate or trolamine, preferably calcium chloride, hardening accelerator is calcium chloride particularly, can react and generate insoluble calcium chloroaluminate with Silicon in Cement acid DFP, chlorion in cement asphalt mortar is greatly reduced, play short solidifying early strength function, the ultimate compression strength of the adding of hardening accelerator can improve CA mortar 1 day and seven days, is conducive to high-speed rail construction progress.
Described acid is hydrochloric acid, sulfuric acid or acetic acid, preferred hydrochloric acid, and adding of acid can regulate pH value, increases the stability of modifier system, can reduce emulsifier simultaneously.
The preparation method of described cement emulsified asphalt mortar properties-correcting agent, that nonionic emulsifying agent and cationic emulsifier are joined in the water of 60 ~ 80 ℃, after dissolving, be cooled to room temperature, add again that to regulate pH value after stirring in emulsion polymerization be 4 ~ 7 to carry out acidifying, finally add hardening accelerator stirring and dissolving to make.
Properties-correcting agent of the present invention is can improve asphalt performance can improve the polymer modifiers of mortar over-all properties again, it both can prepare modified emulsifying asphalt with outer doping, also can in mortar mix process, directly add, be high ferro cement emulsified asphalt mortar Special modifier.
Compared with prior art, the present invention has following beneficial effect:
Properties-correcting agent stable in properties of the present invention, good with bitumen compatibility, the low temperature properties of pitch be can improve, low temperature extensibility and frost resistance improved, good with mortar mix, can significantly improve operable time and the early strength of CA mortar, it has, and preparation method is easy, equipment is simple, the feature that raw material is cheap, be easy to get, and this properties-correcting agent adds in emulsified bitumen not breakdown of emulsion, increased the stability of system, especially the low-temperature performance of emulsified bitumen has been improved to effect better.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
The mass percent of cement emulsified asphalt mortar properties-correcting agent of the present invention is: styrene-butadiene latex 40%, and polyoxyethylene octylphenol ether (OP) 1%, octadecyl trimethyl ammonium chloride (1831) 0.5%, hydrochloric acid 0.5%, calcium chloride 5%, surplus is water.Wherein the solid content of styrene-butadiene latex is 40%, and combined styrene content is 30%, and oxygen ethyl number is 10.
The preparation method of emulsified bitumen modifying agent of the present invention is:
After getting nonionic emulsifying agent and cationic emulsifier and mixing, add stirring and dissolving in the water of 70 ℃, be cooled to room temperature, add in styrene-butadiene latex, add hcl acidifying after emulsification, pH value is 6, then adds calcium chloride, after stirring, can make.
Properties-correcting agent prepared by the present invention adds in high-iron emulsified asphalt and is prepared into high ferro modified emulsifying asphalt, and the ratio of emulsified bitumen and properties-correcting agent is identical with the proportioning of emulsified bitumen in ferric-cement emulsified asphalt slurry raw material and properties-correcting agent.By ferric-cement emulsified asphalt slurry, conventional preparation technology prepares cement emulsified asphalt mortar, raw material used: powder (Wan Chengda type material limited-liability company produces by Anhui), emulsified bitumen, properties-correcting agent, defoamer, air entrapment agent, water, each proportioning raw materials is in Table 1.
Table 1 ferric-cement emulsified asphalt slurry proportioning raw materials (weight part)
Embodiment 2
The sour kind adding in embodiment 2 is all identical with amount, and the solid content of styrene-butadiene latex is 40%, and combined styrene content is 30%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 3
The sour kind adding in embodiment 3 is all identical with amount, and the solid content of styrene-butadiene latex is 40%, and combined styrene content is 30%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 4
The sour kind adding in embodiment 4 is all identical with amount, and the solid content of styrene-butadiene latex is 45%, and combined styrene content is 40%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 5
The sour kind adding in embodiment 5 is all identical with amount, and the solid content of styrene-butadiene latex is 45%, and combined styrene content is 40%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 6
The sour kind adding in embodiment 6 is all identical with amount, and the solid content of styrene-butadiene latex is 45%, and combined styrene content is 40%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 7
The sour kind adding in embodiment 7 is all identical with amount, and the solid content of styrene-butadiene latex is 50%, and combined styrene content is 50%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 8
The sour kind adding in embodiment 8 is all identical with amount, and the solid content of styrene-butadiene latex is 50%, and combined styrene content is 50%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
Embodiment 9
The sour kind adding in embodiment 9 is all identical with amount, and the solid content of styrene-butadiene latex is 50%, and combined styrene content is 50%, and properties-correcting agent each component is specifically in Table 2.
Its preparation method is identical with embodiment 1.
The properties-correcting agent that embodiment 2 ~ 9 is prepared is according to the method for embodiment 1, prepare respectively high ferro modified emulsifying asphalt and ferric-cement emulsified asphalt slurry, and analyze, detect main performance index, in order to the superperformance of properties-correcting agent of the present invention to be described, main performance index is in Table 2 and table 3, and the properties-correcting agent in table 3 embodiment forms identical with table 2.
Table 2 high ferro modified emulsifying asphalt salient features
Remarks: 1831 trades mark that are octadecyl trimethyl ammonium chloride in table 2.
Table 3 ferric-cement emulsified asphalt slurry main performance index
Remarks: the index in table 3 is the technical indicator in " unit plate type non-fragment orbit emulsification asphalt cement mortar technical qualification ".
From table 2 and table 3, can find out, properties-correcting agent prepared by the present invention can improve the low-temperature performance of pitch, compares with blank, can increase substantially the low temperature extensibility of pitch, and can meet the performance requriements of mortar.Do not add properties-correcting agent (blank) though cement emulsified asphalt mortar can meet technical indicator, intensity, operable time and frost resistance aspect in early days, far below the performance that adds the cement emulsified asphalt mortar after properties-correcting agent.
Claims (10)
1. a cement emulsified asphalt mortar properties-correcting agent, is characterized in that being made by the raw material of following mass percent:
High molecular polymer 40 ~ 60%, nonionic emulsifying agent 0.1 ~ 5%, cationic emulsifier 0.1 ~ 5%, hardening accelerator 0.1 ~ 10%, acid 0.05 ~ 1%, surplus is water.
2. cement emulsified asphalt mortar properties-correcting agent according to claim 1, is characterized in that described high molecular polymer is styrene-butadiene latex, nitrile rubber or polychloroprene latex.
3. cement emulsified asphalt mortar properties-correcting agent according to claim 2, is characterized in that described high molecular polymer is styrene-butadiene latex, the poly-type of negatively charged ion breast, and solid content is 40 ~ 60%, combined styrene content is 20 ~ 50%.
4. cement emulsified asphalt mortar properties-correcting agent according to claim 1, is characterized in that described nonionic emulsifying agent is polyethenoxy ether class and/or lipid acid lipid.
5. cement emulsified asphalt mortar properties-correcting agent according to claim 4, it is characterized in that described polyethenoxy ether class is one or more in polyoxyethylene octylphenol ether, polyoxyethylene nonylphenol ether, fatty alcohol-polyoxyethylene ether, n-Hexadecane Soxylat A 25-7, hydroxylation alkyl polyoxyethylene ether, sylvic acid Soxylat A 25-7 or lauric acid Soxylat A 25-7, the oxygen ethyl number of Soxylat A 25-7 is 8 ~ 30; Described lipid acid lipid is sorbitan fatty acid ester.
6. cement emulsified asphalt mortar properties-correcting agent according to claim 1, is characterized in that described cationic emulsifier is quaternary ammonium salts.
7. cement emulsified asphalt mortar properties-correcting agent according to claim 6, is characterized in that described cationic emulsifier is one or more in octadecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, cetyl pyridinium positively charged ion ammonium chloride, tetradecyl amido propyl dimethyl benzyl ammonium chloride.
8. cement emulsified asphalt mortar properties-correcting agent according to claim 1, is characterized in that described hardening accelerator is calcium chloride, sodium-chlor, sodium sulfate, vitriolate of tartar, Sodium Nitrite, calcium formiate or trolamine.
9. cement emulsified asphalt mortar properties-correcting agent according to claim 1, is characterized in that described acid is hydrochloric acid, sulfuric acid or acetic acid.
10. the preparation method of the arbitrary described cement emulsified asphalt mortar properties-correcting agent of a claim 1 ~ 9, it is characterized in that: nonionic emulsifying agent and cationic emulsifier are joined in the water of 60 ~ 80 ℃, after dissolving, be cooled to room temperature, add again that to regulate pH value after stirring in emulsion polymerization be 4 ~ 7 to carry out acidifying, finally add hardening accelerator stirring and dissolving to make.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858036A (en) * | 2017-11-02 | 2018-03-30 | 陈谓清 | A kind of gap filler and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508848A (en) * | 2009-03-18 | 2009-08-19 | 广州路翔股份有限公司 | Modified emulsified asphalt, production method and CA mortar comprising the emulsified asphalt |
| CN101643587A (en) * | 2009-06-04 | 2010-02-10 | 浙江兰亭高科有限公司 | High-viscosity emulsified asphalt for CA mortar and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508848A (en) * | 2009-03-18 | 2009-08-19 | 广州路翔股份有限公司 | Modified emulsified asphalt, production method and CA mortar comprising the emulsified asphalt |
| CN101643587A (en) * | 2009-06-04 | 2010-02-10 | 浙江兰亭高科有限公司 | High-viscosity emulsified asphalt for CA mortar and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858036A (en) * | 2017-11-02 | 2018-03-30 | 陈谓清 | A kind of gap filler and preparation method thereof |
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