CN102839587A - Marshall design method of Evotherm warm-mix asphalt mixture - Google Patents
Marshall design method of Evotherm warm-mix asphalt mixture Download PDFInfo
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- CN102839587A CN102839587A CN2011101660236A CN201110166023A CN102839587A CN 102839587 A CN102839587 A CN 102839587A CN 2011101660236 A CN2011101660236 A CN 2011101660236A CN 201110166023 A CN201110166023 A CN 201110166023A CN 102839587 A CN102839587 A CN 102839587A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a Marshall design method of an Evotherm warm-mix asphalt mixture, comprising the following steps: (1) selecting a Marshall design method of a warm-mix asphalt mixture to design the graduation and oil-stone ratio of the warm-mix mixture; (2) selecting aggregates with different temperatures, conducting a rutting test on the selected aggregates with different temperatures and an asphalt with same temperature of the warm-mix asphalt, and determining the discharge temperature and compaction temperature of the warm-mix asphalt with the bulk density of a test piece of the warm-mix asphalt as a standard; and (3) conducting a high temperature test, a low temperature test, and a water stability test of the warm-mix asphalt at the temperatures, and evaluating by taking technical indexes of the warm-mix asphalt of the same type. According to the invention, the warm-mix asphalt mixture can be designed without a gyratory compactor, the bulk density of the warm-mix asphalt mixture is represented as the core sample density of the rutting plate drilled core, and the technical indexes of the warm-mix asphalt of the same type are taken as the performance index for evaluation; and the design method is simple and reasonable and is convenient for laboratories and field laboratories without the gyratory compactor, thus the design method of the warm-mix asphalt mixture is expanded.
Description
Technical field
The invention belongs to the material technology field, be specifically related to the Marshall method for designing of Evotherm Warm-Mix Bitumen Mixture.
Background technology
The research of Warm-Mix Bitumen Mixture originates from Europe; Through adding the method for additive; When keeping good pavement performance of hot-mix asphalt mixture and construction quality, effectively reduce the mixing and stirring of bituminous mixture, construction temperature, mix and stir temperature; Generally can reduce to 120 ℃～150 ℃, the decking and rolling temperature can guarantee construction quality at 100 ℃～130 ℃.Because Warm-Mix Bitumen Mixture is reducing energy consumption and the superiority of protecting aspect the environment, has obtained various countries highway workers' extensive concern.
The Evotherm warm-mixing agent is U.S.'s new technology newly developed, and Evotherm has adopted chemical admixture and pitch dispersion technology.Its chemical admixture comprised emulsifier, improve the ability that wraps, improve the compound workability, improve the modifier of multiple effects such as adhesion.
2003, as the main emulsifier supplier in the whole world, U.S. MeadWestvaco company based on its road surface with the surface active process platform development Evotherm, in November, 2003, this technology is implemented test section first in South Africa.After this, this technology constantly accumulates on the basis of application experience in the whole world, has passed through technological innovation 1 time, and it is ripe that 2 product up-gradation, technology are tending towards.In the end of the year 2007, technical application changes the scale stage over to comprehensively.2003～2007 1 first half of the year; What the Evotherm technology adopted is that mulseal adds pattern; Be about to additive and at first produce a kind of high residue thing (70%) mulseal as emulsifier; This mulseal rendered to through the pitch pipeline mix and stir pot and mix and stir, the method for designing of compound is that utilization rotary compactor empirical method designs, and the maximum benefit of this kind compound is that water, pitch, additive have reached sufficient mixing at mulseal.Yet, although the project implementation is all very successful, the insulation of mulseal (80 ℃) and with
The cooperation of existing heated bitumen pipeline in practice of construction, run into huge difficulty, and the excessive water yield has also greatly reduced energy-saving effect.In addition, because additive has at first required emulsification, pitch at first requires ability emulsification, has also limited material and has satisfied the need with the compliance of performance.
Beginning in 2007; Adopt direct putting type (DAT) interpolation pattern; The compound method for designing still designs with the rotary compactor empirical method, during produced on-site, directly uses emulsifier aqueous solution; In the pitch and the process of mixing and stirring of gathering materials, spray into this solution (additive is sent into through easy autonomous system and mixed and stirred pot), the production temperature is mixed compound after fully stirring.The employing of direct putting type has greatly increased the convenience of additive supply, because the water yield of introducing only is equivalent to 10%～20% of mulseal pattern, energy-saving effect is more obvious simultaneously.Material and pitch almost there is not selectivity.To equipment and the equal compliance of material, make Evotherm and existing bituminous mixture technical system realize seamless link.The compound operating temperature of Evotherm generally descends 30%～60% than same model hot-mix asphalt mixture.
At the beginning of 2010; The appearance of Evotherm warm-mixed asphalt makes the warm-mixed asphalt new step of more marching toward, and the compound method for designing still designs with the rotary compactor empirical method; Directly add warm-mixing agent in plain asphalt in pitch factory; Form finished product Evotherm warm-mixed asphalt, saved the link that the warm-mixing agent pump feeder is installed at the scene greatly, make the range of application of Warm-Mix Bitumen Mixture more wide.But there is not the ripe Marshall design method of a cover to this moment.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Marshall method for designing of Evotherm Warm-Mix Bitumen Mixture; This method has overcome Warm-Mix Bitumen Mixture and has directly used hot-mix asphalt mixture Marshall method for designing can not hit real problem, and it will be more accurate instructing the degree of compaction on warm-mixed asphalt road surface with it.
Technical scheme of the present invention: a kind of Marshall method for designing of Evotherm Warm-Mix Bitumen Mixture, it may further comprise the steps:
(1) select for use the marshall's method of hot-mix asphalt mixture to design grating and the bitumen aggregate ratio that temperature is mixed compound;
(2) asphalt temperature is selected the asphalt temperature of hot-mix asphalt mixture; Regulate aggregate temperature and carry out the test of rut plate at 130～180 ℃; Bulk density with hot-laid mixture rut twist drill core test specimen is a standard, and the different temperatures temperature is mixed aggregate temperature and the compacting temperature that compound rut twist drill core is confirmed Warm-Mix Bitumen Mixture;
(3) carry out temperature with aggregate temperature definite in the step (2) and compacting temperature and mix the high temperature of compound, low temperature, water stability testing, estimate with the technical indicator of hot-laid mixture, thereby draw the Evotherm Warm-Mix Bitumen Mixture of designing requirement.
The present invention compared with prior art has following beneficial effect: 1. the present invention proposes Warm-Mix Bitumen Mixture and can use hot-laid mixture Marshall design method to design indirectly, has overcome Warm-Mix Bitumen Mixture and has directly used hot-mix asphalt mixture Marshall method for designing can not hit real problem; 2. the design's method selects for use rut twist drill core sample to measure the bulk density of compound, is all the brill wicking surface because brill core core side table and flexible pavement bore the core core, and it will be more accurate instructing the degree of compaction on warm-mixed asphalt road surface with it; 3. overcome warm-mixed asphalt can not design Warm-Mix Bitumen Mixture when not having the gyratory compaction test instrument situation, further made the improvement more of Warm-Mix Bitumen Mixture Marshall method for designing.
The specific embodiment
A kind of Marshall method for designing of Evotherm Warm-Mix Bitumen Mixture, it may further comprise the steps:
(1) selects for use the marshall's method of hot-mix asphalt mixture to design grating and the bitumen aggregate ratio that temperature is mixed compound, confirm as 5.2% like bitumen aggregate ratio;
(2) as selecting SBS modification AC-13 bituminous mixture; 165 ℃ of asphalt temperature are constant; Regulating aggregate temperature and carry out the test of rut plate at 130～180 ℃, is standard with the bulk density of the test specimen of hot-laid mixture, confirms the aggregate temperature and the compacting temperature of Warm-Mix Bitumen Mixture;
(3) carry out temperature with aggregate temperature in the step (2) and compacting temperature and mix the high temperature of compound, low temperature, water stability testing, estimate with the technical indicator of hot-laid mixture, thus design Evotherm Warm-Mix Bitumen Mixture.
Claims (1)
1. the Marshall method for designing of an Evotherm Warm-Mix Bitumen Mixture is characterized in that it may further comprise the steps:
(1) select for use the marshall's method of hot-mix asphalt mixture to design grating and the bitumen aggregate ratio that temperature is mixed compound;
(2) asphalt temperature is selected the asphalt temperature of hot-mix asphalt mixture; Regulate aggregate temperature and carry out the test of rut plate at 130～180 ℃; Bulk density with hot-laid mixture rut twist drill core test specimen is a standard, and the different temperatures temperature is mixed aggregate temperature and the compacting temperature that compound rut twist drill core is confirmed Warm-Mix Bitumen Mixture;
(3) carry out temperature with aggregate temperature definite in the step (2) and compacting temperature and mix the high temperature of compound, low temperature, water stability testing, estimate with the technical indicator of hot-laid mixture, thereby draw the Evotherm Warm-Mix Bitumen Mixture of designing requirement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110166023.6A CN102839587B (en) | 2011-06-20 | 2011-06-20 | The marshall' mechanic characteristic value of Evotherm Warm-Mix Bitumen Mixture |
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| CN201110166023.6A CN102839587B (en) | 2011-06-20 | 2011-06-20 | The marshall' mechanic characteristic value of Evotherm Warm-Mix Bitumen Mixture |
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| CN102839587A true CN102839587A (en) | 2012-12-26 |
| CN102839587B CN102839587B (en) | 2016-03-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132418A (en) * | 2013-02-22 | 2013-06-05 | 东南大学 | Construction mixing temperature determination method of warm-mix asphalt mixture using surface active warm-mix agent |
| CN103911930A (en) * | 2014-04-25 | 2014-07-09 | 成张佳宁 | Construction method of warm mix asphalt concrete pavement of municipal road |
| CN104805747A (en) * | 2015-04-26 | 2015-07-29 | 哈尔滨工业大学 | Method for designing mixing proportion of upper-surface mixture of asphalt pavement according to structural demands |
| CN104844073A (en) * | 2015-04-27 | 2015-08-19 | 苏州科技学院 | Water-blown warm-mix flame-retardant asphalt mixture, and preparation and design method thereof |
| CN104929010A (en) * | 2015-04-28 | 2015-09-23 | 哈尔滨工业大学 | Method for designing mixing proportion of lower surface layer of asphalt pavement according to structure demands |
| CN110438866A (en) * | 2019-08-10 | 2019-11-12 | 深圳市市政工程总公司 | The optimum oil-stone ratio design method of Warm-Mix Bitumen Mixture |
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| CN101602583A (en) * | 2009-07-10 | 2009-12-16 | 武汉理工大学 | A kind of warm-mixed auxiliary agent for asphalt mixture and preparation method thereof |
| CN101348613B (en) * | 2007-07-18 | 2010-11-03 | 中国石油天然气股份有限公司 | Non-water road modified asphalt cold-penetration seam material and preparation of thereof |
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2011
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Patent Citations (4)
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| WO1992001751A1 (en) * | 1990-07-23 | 1992-02-06 | Seppo Aho | A method of processing an asphalt mixture |
| KR100392604B1 (en) * | 2000-04-04 | 2003-07-28 | 한국도로공사 | heat insulation tank for asphalt mixture |
| CN101348613B (en) * | 2007-07-18 | 2010-11-03 | 中国石油天然气股份有限公司 | Non-water road modified asphalt cold-penetration seam material and preparation of thereof |
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Non-Patent Citations (1)
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132418A (en) * | 2013-02-22 | 2013-06-05 | 东南大学 | Construction mixing temperature determination method of warm-mix asphalt mixture using surface active warm-mix agent |
| CN103132418B (en) * | 2013-02-22 | 2015-07-01 | 东南大学 | Construction mixing temperature determination method of warm-mix asphalt mixture using surface active warm-mix agent |
| CN103911930A (en) * | 2014-04-25 | 2014-07-09 | 成张佳宁 | Construction method of warm mix asphalt concrete pavement of municipal road |
| CN104805747A (en) * | 2015-04-26 | 2015-07-29 | 哈尔滨工业大学 | Method for designing mixing proportion of upper-surface mixture of asphalt pavement according to structural demands |
| CN104805747B (en) * | 2015-04-26 | 2017-10-31 | 哈尔滨工业大学 | By the bituminous paving upper layer mixture mixing proportion design method of topology requirement |
| CN104844073A (en) * | 2015-04-27 | 2015-08-19 | 苏州科技学院 | Water-blown warm-mix flame-retardant asphalt mixture, and preparation and design method thereof |
| CN104929010A (en) * | 2015-04-28 | 2015-09-23 | 哈尔滨工业大学 | Method for designing mixing proportion of lower surface layer of asphalt pavement according to structure demands |
| CN110438866A (en) * | 2019-08-10 | 2019-11-12 | 深圳市市政工程总公司 | The optimum oil-stone ratio design method of Warm-Mix Bitumen Mixture |
| CN110438866B (en) * | 2019-08-10 | 2022-06-03 | 深圳市市政工程总公司 | Optimum oilstone ratio design method of warm-mixed asphalt mixture |
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| CN102839587B (en) | 2016-03-30 |
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