CN103558366A - Water stability testing method for large-particle size asphalt mixture - Google Patents
Water stability testing method for large-particle size asphalt mixture Download PDFInfo
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- CN103558366A CN103558366A CN201310488695.8A CN201310488695A CN103558366A CN 103558366 A CN103558366 A CN 103558366A CN 201310488695 A CN201310488695 A CN 201310488695A CN 103558366 A CN103558366 A CN 103558366A
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Abstract
The invention discloses a water stability testing method for a large-particle size asphalt mixture. The water stability testing method is implemented by adopting the following steps: (a) forming plate-like test pieces corresponding to aggregate size or thickness of a structure layer by adopting a wheel rolling method, and manufacturing two groups of test pieces or cutting the plate-like test pieces on the scene; (b) placing the test pieces after forming under normal-temperature conditions together with a testing mold for at least 12h, wherein as for the polymer modified asphalt mixture, the appropriate placement time is 48h, and the placement time at room temperature is not longer than 1 week; (c), soaking the other group of the test pieces in the water at normal temperature for 2h while not soaking one group of the test pieces in water, placing the test pieces into plastic bags, adding 200ml of water, and freezing the test pieces at the temperature of -18 DEG C for 16h; (d) immediately placing the test pieces into the water at the temperature of 60 DEG C for 24h; and (e) curing the two groups of the test pieces at the temperature of 25 DEG C for 2h, performing a rutting test according to T0719, and determining the dynamic stability ratio DSR, wherein the dynamic stability ratio DSR is required to be not less than 85%. By adopting the water stability testing method, the problems in a traditional Marshall compaction testing method are solved.
Description
Technical field
The present invention relates to asphalt test technical field, is exactly a kind of LSAM water stability testing
Method.
Background technology
The existing < < of China highway engineering pitch and Asphalt Mixture Experiment rules > > (JTG E20-2011) adopt freeze thawing diametral compression test method to carry out the water stability testing of asphalt, the method adopts traditional Marshall compaction test method shaping test piece, has problems as follows:
1) specimen molding and practice of construction process are variant.Because marshall compaction instrument is by hitting real shaping test piece, can not reflect truly that street roller and vehicular load rub, roll effect to bituminous pavement, larger with the suffered difference between the effects of bituminous pavement under construction and use state, and marshal piece compacting and the volume of traffic far.
2) shaping method of specimen can not simulated driving compacting.The actual compacting of marshal piece forming process and road has larger difference, do not consider the horizontal shear effect of load, just by increase, hit the compaction rate that real number of times improves compound, result is not only significantly increased compaction rate, causes on the contrary the fragmentation of gathering materials, the change of mixture gradation type.
3) be not suitable for the asphalt moulding that large particle diameter gathers materials.When aggregate size is when large (maximum particle diameter of gathering materials surpasses 25mm), specimen molding difficulty.Meet road and gather materials and be easy to fragmentation under standard compaction conditions with the greater particle size of quality requirements, be not easy moulding.
4) diametral compression test data discrete is larger.
Summary of the invention
The water stability testing method and evaluation index and the standard that the object of this invention is to provide a kind of LSAM.The present invention realizes by following technical scheme: (a) adopt the moulding of rolling method and gather materials size or the corresponding plate-like test specimen of Laminate construction thickness, rolling forming machine roller-compaction is long 300 millimeters, wide 300 millimeters, the plate-like test specimen of thick 50 ~ 100 millimeters, make two groups of test specimens, or the plate-like test specimen of on-site cutting; (b) after specimen molding, the time of placing under normal temperature condition together with die trial must not be less than 12 hours, and to polymer modified asphalt compound, the time of placement was advisable with 48 hours, after polymer modified asphalt is fully solidified, can test, room temperature must not be longer than 1 week standing time; (c) one group of test specimen does not soak, and another group test specimen soaked after 2 hours in normal-temperature water, and test specimen is put into polybag, added 200 ml waters, and test specimen freezes 16h at-18 ℃; (d) test specimen is put into 60 ℃ of water 24h immediately; (e) the equal health 2h under 25 ℃ of conditions of two groups of test specimens, carries out wheel tracking test by T0719, determines that dynamic stability is than DSR, requires dynamic stability than DSR >=85%.Every group of test specimen is not less than four.
Advantage of the present invention is:
1, solved the problem that traditional Marshall compaction test method shaping test piece exists.
2, high-temperature stability, low-temperature stability and the water stability of asphalt have been proposed to melt in the water stability testing new method of one.
3, the evaluation method of LSAM water stability testing has been proposed.
4, the evaluation index of LSAM water stability testing has been proposed.
5, the evaluation criterion of LSAM water stability testing has been proposed.
6, set up the correlativity of asphalt high temperature, low temperature and water stability testing result, its correlativity adopts dynamic stability to characterize than DSR.
7, the dynamic stability proposing can be used for the high and low temperature of asphalt and water stability can carry out comprehensive evaluation than DSR index.
Embodiment
1. adopt the moulding of rolling method and gather materials size or the corresponding plate-like test specimen of Laminate construction thickness.The plate-like test specimen of the long 300mm of rolling forming machine roller-compaction, wide 300mm, thick 50 ~ 100mm for the existing < < of Ji An China highway engineering pitch and Asphalt Mixture Experiment rules > > (JTG E20-2011) T0703.Make two groups of test specimens, every group of test specimen is not less than four.This method is also applicable to the plate-like test specimen of on-site cutting, and the size of cutting sample is definite by testing according to the actual conditions of on-the-spot surface layer.
2. after specimen molding, the time of placing under normal temperature condition together with die trial must not be less than 12h.To polymer modified asphalt compound, the time of placement is advisable with 48h, can test after polymer modified asphalt is fully solidified, and room temperature must not be longer than 1 week standing time.
3. one group of 4 test specimen does not soak, and 4 test specimens of another group soak after 2h in normal-temperature water, and test specimen is put into polybag, add 200mL water, and test specimen freezes 16h at-18 ℃.
4. test specimen is put into 60 ℃ of water 24h immediately.
5. liang equal health 2h under 25 ℃ of conditions of group test specimen.
6. by T0719, carry out wheel tracking test, determine that dynamic stability is than DSR, require dynamic stability than DSR >=85%.
Claims (2)
1. LSAM water stability testing method, it is characterized in that: (a) adopt the moulding of rolling method and gather materials size or the corresponding plate-like test specimen of Laminate construction thickness, rolling forming machine roller-compaction is long 300 millimeters, wide 300 millimeters, the plate-like test specimen of thick 50 ~ 100 millimeters, make two groups of test specimens, or the plate-like test specimen of on-site cutting; (b) after specimen molding, the time of placing under normal temperature condition together with die trial must not be less than 12 hours, and to polymer modified asphalt compound, the time of placement was advisable with 48 hours, after polymer modified asphalt is fully solidified, can test, room temperature must not be longer than 1 week standing time; (c) one group of test specimen does not soak, and another group test specimen soaked after 2 hours in normal-temperature water, and test specimen is put into polybag, added 200 ml waters, and test specimen freezes 16h at-18 ℃; (d) test specimen is put into 60 ℃ of water 24h immediately; (e) the equal health 2h under 25 ℃ of conditions of two groups of test specimens, carries out wheel tracking test by T0719, determines that dynamic stability is than DSR, requires dynamic stability than DSR >=85%.
2. LSAM water stability testing method according to claim 1, is characterized in that: every group of test specimen is not less than four.
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| CN201310488695.8A CN103558366A (en) | 2013-10-18 | 2013-10-18 | Water stability testing method for large-particle size asphalt mixture |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098294A (en) * | 2014-07-11 | 2014-10-15 | 沈阳建筑大学 | Method for determining optimal asphalt amount of large-particle-size asphalt mixture |
| CN104359731A (en) * | 2014-11-04 | 2015-02-18 | 沈阳建筑大学 | Indoor test compaction forming method for emulsified asphalt cold in-plant recycling regenerated mixture |
| CN105699208A (en) * | 2014-11-28 | 2016-06-22 | 沈阳建筑大学 | Detection method of water stability of cold region large-grain-size asphalt mixture |
| CN106706391A (en) * | 2017-01-19 | 2017-05-24 | 长安大学 | Rutting plate specimen compaction instrument and compaction method |
| CN106771105A (en) * | 2017-03-08 | 2017-05-31 | 苏交科集团股份有限公司 | A kind of method for evaluating asphaltmastic water stability |
| CN106840801A (en) * | 2017-03-06 | 2017-06-13 | 武汉工程大学 | The evaluation method of mould and compound early strength in cold mixing ultra-thin asphalt mixes room |
| CN106969985A (en) * | 2017-04-28 | 2017-07-21 | 黑龙江省交通科学研究所 | A kind of detection method of LSM low temperature modifications asphalt stability |
| CN107462471A (en) * | 2017-09-11 | 2017-12-12 | 交通运输部公路科学研究所 | Method based on section test specimen complex modulus Damage Evaluation stability of asphalt mixture |
| CN107607574A (en) * | 2017-09-11 | 2018-01-19 | 交通运输部公路科学研究所 | The method of phase conversion temperature Assessment of Changes stability of asphalt mixture based on loss modulus peak value |
| CN108181452A (en) * | 2018-02-09 | 2018-06-19 | 四川科路泰交通科技有限公司 | A kind of drainage index frost heaving failure test method |
| CN108627393A (en) * | 2018-02-02 | 2018-10-09 | 北京建筑大学 | A kind of water stability test method of macrovoid high molecular polymer mixture |
| CN109596456A (en) * | 2019-01-24 | 2019-04-09 | 武汉理工大学 | A kind of calculation method of bituminous pavement asphalt and aggregate peeling rate |
| CN110987679A (en) * | 2019-12-25 | 2020-04-10 | 四川新巩固建材有限公司 | Method for detecting dynamic stability of warm-mixed modified asphalt mixture |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098294A (en) * | 2014-07-11 | 2014-10-15 | 沈阳建筑大学 | Method for determining optimal asphalt amount of large-particle-size asphalt mixture |
| CN104098294B (en) * | 2014-07-11 | 2016-10-26 | 沈阳建筑大学 | LSAM asphalt optimum content determines method |
| CN104359731A (en) * | 2014-11-04 | 2015-02-18 | 沈阳建筑大学 | Indoor test compaction forming method for emulsified asphalt cold in-plant recycling regenerated mixture |
| CN105699208A (en) * | 2014-11-28 | 2016-06-22 | 沈阳建筑大学 | Detection method of water stability of cold region large-grain-size asphalt mixture |
| CN106706391A (en) * | 2017-01-19 | 2017-05-24 | 长安大学 | Rutting plate specimen compaction instrument and compaction method |
| CN106706391B (en) * | 2017-01-19 | 2023-04-21 | 长安大学 | Rut plate sample compaction instrument and compaction method thereof |
| CN106840801A (en) * | 2017-03-06 | 2017-06-13 | 武汉工程大学 | The evaluation method of mould and compound early strength in cold mixing ultra-thin asphalt mixes room |
| CN106771105B (en) * | 2017-03-08 | 2019-02-22 | 苏交科集团股份有限公司 | A method of evaluation asphaltmastic water stability |
| CN106771105A (en) * | 2017-03-08 | 2017-05-31 | 苏交科集团股份有限公司 | A kind of method for evaluating asphaltmastic water stability |
| CN106969985A (en) * | 2017-04-28 | 2017-07-21 | 黑龙江省交通科学研究所 | A kind of detection method of LSM low temperature modifications asphalt stability |
| CN106969985B (en) * | 2017-04-28 | 2019-06-21 | 黑龙江省交通科学研究所 | A kind of detection method of LSM low temperature modification asphalt stability |
| CN107462471A (en) * | 2017-09-11 | 2017-12-12 | 交通运输部公路科学研究所 | Method based on section test specimen complex modulus Damage Evaluation stability of asphalt mixture |
| CN107607574A (en) * | 2017-09-11 | 2018-01-19 | 交通运输部公路科学研究所 | The method of phase conversion temperature Assessment of Changes stability of asphalt mixture based on loss modulus peak value |
| CN108627393A (en) * | 2018-02-02 | 2018-10-09 | 北京建筑大学 | A kind of water stability test method of macrovoid high molecular polymer mixture |
| CN108181452A (en) * | 2018-02-09 | 2018-06-19 | 四川科路泰交通科技有限公司 | A kind of drainage index frost heaving failure test method |
| CN109596456A (en) * | 2019-01-24 | 2019-04-09 | 武汉理工大学 | A kind of calculation method of bituminous pavement asphalt and aggregate peeling rate |
| CN109596456B (en) * | 2019-01-24 | 2021-01-26 | 武汉理工大学 | Method for calculating asphalt and aggregate peeling rate of asphalt pavement |
| CN110987679A (en) * | 2019-12-25 | 2020-04-10 | 四川新巩固建材有限公司 | Method for detecting dynamic stability of warm-mixed modified asphalt mixture |
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Application publication date: 20140205 |