CN104359731A - Indoor test compaction forming method for emulsified asphalt cold in-plant recycling regenerated mixture - Google Patents
Indoor test compaction forming method for emulsified asphalt cold in-plant recycling regenerated mixture Download PDFInfo
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- CN104359731A CN104359731A CN201410609627.7A CN201410609627A CN104359731A CN 104359731 A CN104359731 A CN 104359731A CN 201410609627 A CN201410609627 A CN 201410609627A CN 104359731 A CN104359731 A CN 104359731A
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Abstract
The invention discloses a method for instructing indoor test compaction curing of an emulsified asphalt cold in-plant recycling regenerated mixture, and belongs to the field of road materials (projects). The method comprises the steps of putting the uniformly stirred emulsified asphalt cold in-plant recycling regenerated mixture into a test die, putting the test die on a marshall compactor, and compacting each of the two surfaces of the test sample for 50 times; laterally arranging the test piece and the test die together for room-temperature curing for 12 hours; laterally arranging the test piece and the test die together in an air blowing drying oven at the temperature being 60 DEG C for curing for at least 48 hours until constant weight is achieved; taking out the test die from the drying oven, immediately putting the test sample on the marshall compactor, and compacting each of the two surfaces for 25 times; laterally arranging the test piece and the test die on the ground, cooling under the room temperature for at least 12 hours, and performing demolding. According to the method, cement is fully moisturized, the early intensity of the emulsified asphalt cold regenerated mixture is enhanced, and the effect of the cement is achieved; the curing time is prolonged by at least 48 hours; the intensity of the mixture completely conforms to the actual construction and is close to the actual intensity; therefore, the on-site emulsified asphalt cold in-plant recycling regeneration can be better instructed.
Description
Technical field
The present invention relates to the test method belonged in pavement material (engineering) field, is specifically a kind of method that emulsified asphalt cold in-plant recycling compound shop experiment hits real health.
Background technology
At present, asphalt pavement regeneration Land use systems is divided into hot in-plant reclaimed, the large class of cold in-plant recycling, in-situ heat regeneration and cold in place recycling four both at home and abroad.This field it has been generally acknowledged that at present, ground surface material and basic unit, subbase course material is carried out the full degree of depth and puddles rear regeneration, be called as complete thick formula regeneration, but its mode is similar to on-the-spot cold regeneration mode or cold in-plant recycling mode.All there is investigation and application in various degree in China for these four kinds of regenerations, achieves many valuable achievements in research.
For urban road, there is the volume of traffic large, the available maintenance time is short, can not disturb civic normal life, also needs the life idea meeting green health.It is high that cold in-plant recycling technology has old material utilization factor, the feature such as cold mixing cold-application, economy, energy-conserving and environment-protective, and can reduce interruption of communication and user's inconvenience, is applicable to very much the maintenance of urban road.Realize cold in-plant recycling approach and have emulsified asphalt and foamed asphalt.But for the Beat numbers health-preserving method of emulsified asphalt cold in-plant recycling material, do not seek unity of standard at present.Hitting solid yardage method, number of times in use procedure, all there is very large randomness in health-preserving condition, time etc., the present invention is directed to these problems and proposes new method by studying to compare, contribute to the widespread use of emulsified asphalt cold in-plant recycling technology.
Add cement in emulsified asphalt cold in-plant recycling compound, emulsified asphalt medium pitch and water can be made to accelerate to be separated, emulsified asphalt de-emulsification speed is accelerated, and compound early strength improves, and the strength derived value time shortens greatly.But cement has certain setting time, the general presetting period is 2h ~ 3h, final setting time is generally 5h ~ 6h, present national regulation does not carry out room temperature health to emulsified asphalt cold in-plant recycling compound test specimen, be placed directly in health in convection oven, do not take into full account hydrated cementitious, the time needed for hydrated cementitious and moisture can not be ensured, do not meet site operation.
Emulsified asphalt cold in-plant recycling compound is containing moisture after hitting reality and room temperature health, and the strength development of compound is closely related with the evaporation of moisture wherein.Moisture major part in compound is in free state, occupy the space in compound, because the viscosity of moisture is far below the viscosity of pitch, these moisture play the effect of lubricant in compound, reduce friction resistance between aggregate particle, reduce intensity and the temperature of compound.Along with moisture evaporation compound intensity strengthens gradually, in 60 DEG C of convection oven in the past, health can not make the intensity of compound reach intensity in reality at least 40 hours.
Summary of the invention
The object of the present invention is to provide a kind of emulsified asphalt cold in-plant recycling compound shop experiment Beat numbers method, specification shop experiment operates.
Technical scheme of the present invention is as follows:
1. the emulsified asphalt cold in-plant recycling compound of uniform mixing is loaded die trial, be put on marshall compaction instrument, sample is two-sided respectively hits real 50 times;
2. test specimen is sidelong room temperature health 12 hours together with die trial;
3. test specimen to be sidelong in 60 DEG C of convection oven health to constant weight together with die trial, at least 48 hours;
4. die trial is taken out from baking oven, and sample is put on marshall compaction instrument immediately, two-sidedly respectively hits real 25 times;
5. test specimen is sidelong on ground together with die trial, at room temperature cools at least 12 hours, then the demoulding.
Advantage of the present invention is: take into full account hydrated cementitious in Cold Recycled Mixture with Emulsified Asphalt, proposes the method for room temperature health 12h, makes the abundant aquation of cement, improves Cold Recycled Mixture with Emulsified Asphalt early strength, plays the effect of cement.
The present invention is by health time lengthening at least 48 hours (test specimen reaches constant weight, and moisture evaporates completely), and compound intensity is fully formed and is consistent with practice of construction, close to actual, and can better the construction of guide field emulsified asphalt cold in-plant recycling.
Accompanying drawing explanation
Fig. 1: a kind of emulsified asphalt cold in-plant recycling compound shop experiment hits the process flow diagram of real health.
Embodiment
A kind of emulsified asphalt cold in-plant recycling of the present invention compound shop experiment Beat numbers method, equipment can select existing equipment, improves mainly in technique, specific as follows:
1, the emulsified asphalt cold in-plant recycling compound of uniform mixing is loaded die trial, be put on marshall compaction instrument, sample is two-sided respectively hits real 50 times;
2, test specimen is sidelong room temperature health 12 hours together with die trial;
3, test specimen to be sidelong in 60 DEG C of convection oven health to constant weight together with die trial, at least 48 hours;
4, die trial is taken out from baking oven, and sample is put on marshall compaction instrument immediately, two-sidedly respectively hits real 25 times;
5, test specimen is sidelong on ground together with die trial, at room temperature cools at least 12 hours, then the demoulding.
Claims (2)
1. an emulsified asphalt cold in-plant recycling compound shop experiment Beat numbers method, is characterized in that: the emulsified asphalt cold in-plant recycling compound of uniform mixing is loaded die trial, is put on marshall compaction instrument, and sample is two-sided respectively hits real 50 times;
Test specimen is sidelong room temperature health 12 hours together with die trial;
Test specimen to be sidelong in 60 DEG C of convection oven health to constant weight together with die trial, at least 48 hours;
Die trial is taken out from baking oven, and sample is put on marshall compaction instrument immediately, two-sidedly respectively hits real 25 times;
Test specimen is sidelong on ground together with die trial, at room temperature cools at least 12 hours, then the demoulding.
2. a kind of emulsified asphalt cold in-plant recycling test mixture Beat numbers method according to claim 1, is characterized in that: emulsified asphalt cold in-plant recycling compound obtains certain compacting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410609627.7A CN104359731A (en) | 2014-11-04 | 2014-11-04 | Indoor test compaction forming method for emulsified asphalt cold in-plant recycling regenerated mixture |
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| CN201410609627.7A CN104359731A (en) | 2014-11-04 | 2014-11-04 | Indoor test compaction forming method for emulsified asphalt cold in-plant recycling regenerated mixture |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105445445A (en) * | 2015-11-18 | 2016-03-30 | 北京市政路桥建材集团有限公司 | Multistage construction control method for cold-reclaimed emulsified asphalt mixture |
| CN106198244A (en) * | 2016-07-02 | 2016-12-07 | 河南省高远公路养护技术有限公司 | A kind of evaluation methodology of fiber micro-surfacing compound test specimen cracking resistance |
| CN106969955A (en) * | 2017-03-30 | 2017-07-21 | 薛秋香 | Composite mortar penetration type sub-surface compound Unconfined compressive sample preparation method |
| CN107631922A (en) * | 2017-10-19 | 2018-01-26 | 长安大学 | A kind of cold recycled asphalt mixture pressure Vapour-bath apparatus |
| CN108181449A (en) * | 2017-11-21 | 2018-06-19 | 北京建筑大学 | A kind of solvent type cold-mix asphalt mixture health-preserving method |
| CN108755347A (en) * | 2018-05-19 | 2018-11-06 | 南京紫城工程设计有限公司 | A kind of cold renewal plate form rubber substep mixes and stirs and forming method |
| CN109541190A (en) * | 2018-12-12 | 2019-03-29 | 甘肃畅陇公路养护技术研究院有限公司 | A kind of measuring method of plantmix's Cold Recycled Mixture with Emulsified Asphalt operable time |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445445A (en) * | 2015-11-18 | 2016-03-30 | 北京市政路桥建材集团有限公司 | Multistage construction control method for cold-reclaimed emulsified asphalt mixture |
| CN105445445B (en) * | 2015-11-18 | 2017-06-23 | 北京市政路桥建材集团有限公司 | A kind of Cold Recycled Mixture with Emulsified Asphalt multistage construction control method |
| CN106198244A (en) * | 2016-07-02 | 2016-12-07 | 河南省高远公路养护技术有限公司 | A kind of evaluation methodology of fiber micro-surfacing compound test specimen cracking resistance |
| CN106969955A (en) * | 2017-03-30 | 2017-07-21 | 薛秋香 | Composite mortar penetration type sub-surface compound Unconfined compressive sample preparation method |
| CN107631922A (en) * | 2017-10-19 | 2018-01-26 | 长安大学 | A kind of cold recycled asphalt mixture pressure Vapour-bath apparatus |
| CN107631922B (en) * | 2017-10-19 | 2024-02-27 | 长安大学 | Cold regeneration bituminous mixture pressure health preserving case |
| CN108181449A (en) * | 2017-11-21 | 2018-06-19 | 北京建筑大学 | A kind of solvent type cold-mix asphalt mixture health-preserving method |
| CN108755347A (en) * | 2018-05-19 | 2018-11-06 | 南京紫城工程设计有限公司 | A kind of cold renewal plate form rubber substep mixes and stirs and forming method |
| CN109541190A (en) * | 2018-12-12 | 2019-03-29 | 甘肃畅陇公路养护技术研究院有限公司 | A kind of measuring method of plantmix's Cold Recycled Mixture with Emulsified Asphalt operable time |
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