CN104860578B - Spacetabs type anti-ice freezes the preparation method of stone mastic asphalt - Google Patents
Spacetabs type anti-ice freezes the preparation method of stone mastic asphalt Download PDFInfo
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- CN104860578B CN104860578B CN201510312213.2A CN201510312213A CN104860578B CN 104860578 B CN104860578 B CN 104860578B CN 201510312213 A CN201510312213 A CN 201510312213A CN 104860578 B CN104860578 B CN 104860578B
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Abstract
Spacetabs type anti-ice of the present invention freezes the preparation method of stone mastic asphalt, including following operating procedure, and (1) determines not filling gradation composition and bitumen content that anti-ice freezes additive according to mix type, that is, determines elementary mix ratio；(2) determine the bulk density of coarse aggregate and calculate the voidage of elementary mix ratio；(3) calculate anti-ice and freeze additive volume；(4) sequentially added in pot after mineral aggregate, fiber stabilizer mix and stir mixing and stirring, add pitch and mix and stir, be eventually adding anti-ice and freeze additive and mix and stir, obtain target product.The existing structure skeleton of the addition interference compound of particulate additive and the voidage for increasing compound, so the voidage that elementary mix ratio is controlled during preparation is 3% ± 0.1%, and asphalt content is correspondingly improved 0.1%~0.2% because additive adds powder accounting, ensure that target product disposably prepares voidage and reaches use requirement, meet target pavement performance.
Description
Technical field
Freeze pitch the present invention relates to a kind of preparation method of road construction compound, more particularly to a kind of spacetabs type anti-ice
The preparation method of mastic-broken stone mixture.
Background technology
In China southern area of Jiangsu Province, winter air moistening, temperature is relatively low, and road surface often freezes or coagulated because of snowfall and sleet
Ice phenomenon, the driven nature and security to driving vehicle is totally unfavorable.Especially frozen on ring road mouthful road surface and elevated bridge bridge floor
Seriously, huge economic loss is caused.Spacetabs type anti-ice freezes bituminous paving, using the technology pair of chemical addition agent or physical modification
Pavement asphalt mixture is modified the purpose for reaching active deicing, is the focus studied at present.Current additive is with conventional
It is outer mix method addition, leverage the volume parameter and pavement performance of asphalt-mastic-broken stone (SMA) compound.Therefore,
Research is convenient and swift and mixing proportion design method of SMA mixture of good performance is of great practical significance with it is wide
Market prospects.
The defect existed in view of the preparation of above-mentioned existing stone mastic asphalt, the present inventor is based on being engaged in
Such product design manufacture abundant for many years practical experience and professional knowledge, and coordinate the utilization of scientific principle, actively studied wound
Newly, to found the preparation method that a kind of new sustained release type anti-ice freezes stone mastic asphalt, it is made with more practicality
Property.By constantly research, design, and after studying sample repeatedly and improving, this hair having practical value is created finally
It is bright.
The content of the invention
It is a primary object of the present invention to, the defect for overcoming existing stone mastic asphalt to exist, and provide
A kind of new sustained release type anti-ice freezes the preparation method of stone mastic asphalt, it is ensured that anti-ice improves road while freezing effect
With performance, thus more suitable for practicality, and with the value in industry.
The object of the invention to solve the technical problems is realized using following technical scheme.According to present invention proposition
Spacetabs type anti-ice freeze the preparation method of stone mastic asphalt, including following operating procedure,
(1) determined not filling gradation composition and bitumen content that anti-ice freezes additive according to mix type, that is, determine base
Plinth match ratio；
(2) determine the bulk density of coarse aggregate and calculate the voidage of elementary mix ratio；
(3) calculate anti-ice and freeze additive volume；
(4) sequentially added in pot after mineral aggregate, fiber stabilizer mix and stir mixing and stirring, add pitch and mix and stir, be eventually adding anti-
Frost additive is mixed and stirred, and obtains target product.
Further, foregoing spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, and basis coordinates
The voidage of ratio is 3% ± 0.1%.
Further, foregoing spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, passes through volume
Design method determines asphalt optimum content using voidage as 4%.
Further, foregoing spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, asphalt content
0.1%~0.2% is improved than the asphalt content in elementary mix ratio.
Further, foregoing spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, the fiber
Stabilizer is lignocellulosic.
Further, foregoing spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, the anti-ice
It is the CaCl being in granular form to freeze additive2Anti-ice freezes additive, and particle size range is 0.1~5mm.
Further, foregoing spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, the mineral aggregate
Including coarse aggregate, fine aggregate and filler miberal powder, particle size range is respectively：10~15mm, 5~10mm, 3~5mm, 0~3mm.
By above-mentioned technical proposal, spacetabs type anti-ice of the present invention freezes the preparation method of stone mastic asphalt at least
With following advantages：
The existing structure skeleton of the addition interference compound of particulate additive and the voidage for increasing compound, so in system
The voidage that elementary mix ratio is controlled in standby process is 3% ± 0.1%, and to add powder accounting corresponding due to additive
Ground asphalt content is improved 0.1%~0.2%, it is ensured that target product disposably prepares voidage and reaches use requirement, met
Target pavement performance.The present invention for spacetabs type frost stone mastic asphalt application provide it is a set of it is convenient and swift,
Reliability preferably design and preparation method, make spacetabs type anti-ice freeze stone mastic asphalt pavement performance and are carried
It is high.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, described in detail below with presently preferred embodiments of the present invention as after.
Brief description of the drawings
Fig. 1 show the schematic flow sheet of preparation method of the present invention.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, to according to this
The spacetabs type anti-ice that invention is proposed freezes preparation method its embodiment, feature and its work(of stone mastic asphalt
Effect, is described in detail as after.
Embodiment 1
Mix type SMA-13 is selected, experiment is SBS modified pitch with pitch, and mineral aggregate includes：Coarse aggregate comes from Xing Yuan
Stone factory, fine aggregate is produced from spring stone factory from Mao Di stone factories and mineral powder filling materials, and fiber stabilizer uses Shandong Gang Qiao
The lignin fibre that engineering material Science and Technology Ltd. produces.
The accounting of gathering materials of kind of the different-grain diameter scope of elementary mix ratio, i.e., four is determined, gathering materials for different-grain diameter is respectively designated as
1#, 2#, 3# and 4#.
1# (10~15mm):2# (5~10mm):3# (3~5mm):4# (0~3mm):Miberal powder=44.5:33.0:0.0:
12.0:10.5, bitumen aggregate ratio is 6.0%, fiber stabilizer volume 0.3%.Final elementary mix ratio voidage is 3%.Baking material temperature
Degree uses 180 DEG C, and 170 DEG C of asphalt heating temperature mixes and stirs temperature for 175 DEG C, and compacting temperature is 170 DEG C.Determine calcium chloride anti-ice
It is 5.5% to freeze additive volume.Sequentially added in pot mineral aggregate, fiber stabilizer, pitch and mix and stir respectively mixing and stirring, be eventually adding chlorine
Change calcium anti-ice jelly additive and mix and stir 30S.Obtain spacetabs type anti-ice and freeze SMA mixture, test specimen needed for preparing, its performance test results
As shown in table 1.
Embodiment 2
The type SMA-13 of compound 5 is selected, experiment is SBS modified pitch with pitch, and mineral aggregate includes：Coarse aggregate comes from Xing Yuan
Stone factory, fine aggregate is produced from spring stone factory from Mao Di stone factories and mineral powder filling materials, and fiber stabilizer uses Shandong Gang Qiao
The lignin fibre that engineering material Science and Technology Ltd. produces.
1# (10~15mm):2# (5~10mm):3# (3~5mm):4# (0~3mm):Miberal powder=45:34.0:0.0:
10.0:11, bitumen aggregate ratio is 6.5%, fiber stabilizer volume 0.4%.Final elementary mix ratio voidage is 35%.Baking material temperature
Using 185 DEG C, 175 DEG C of asphalt heating temperature, it is 180 DEG C to mix and stir temperature, and compacting temperature is 165 DEG C.Determine that calcium chloride anti-ice is frozen
Additive volume is 4.2%.Sequentially added in pot mineral aggregate, fiber stabilizer, pitch and mix and stir respectively mixing and stirring, be eventually adding chlorination
Calcium anti-ice freezes additive and mixes and stirs 20S.Obtain spacetabs type anti-ice and freeze SMA mixture, test specimen needed for preparing, its performance test results is such as
Shown in table 1.
Embodiment 3
The type SMA-13 of compound 5 is selected, experiment is SBS modified pitch with pitch, and mineral aggregate includes：Coarse aggregate comes from Xing Yuan
Stone factory, fine aggregate is produced from spring stone factory from Mao Di stone factories and mineral powder filling materials, and fiber stabilizer uses Shandong Gang Qiao
The lignin fibre that engineering material Science and Technology Ltd. produces, cement is Portland cement.
1# (10~15mm):2# (5~10mm):3# (3~5mm):4# (0~3mm):Miberal powder=48:36.0:1.0:
15.0:10, bitumen aggregate ratio is 6.8%, fiber stabilizer volume 0.5%.Final elementary mix ratio voidage is 4%.Baking material temperature
Using 190 DEG C, 180 DEG C of asphalt heating temperature, it is 175 DEG C to mix and stir temperature, and compacting temperature is 180 DEG C.Determine that calcium chloride anti-ice is frozen
Additive volume is 6%.Cement mixing content is 2%.Sequentially added in pot mineral aggregate, fiber, cement, pitch and mix and stir respectively mixing and stirring,
It is eventually adding anti-ice jelly additive and mixes and stirs 30S.Obtain spacetabs type anti-ice and freeze SMA mixture, test specimen needed for preparing, its performance test
As a result it is as shown in table 1.
The spacetabs type anti-ice of table 1 freezes SMA mixture pavement performance test result
Note：A represents anti-ice jelly additive in table.
Result of the test shows that spacetabs type anti-ice freezes the water stability, high temperature stability performance, low-temperature cracking-resistance of SMA mixture
Higher requirement can have been reached.
The above, is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification for being made to above example, equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (3)
1. a kind of spacetabs type anti-ice freezes the preparation method of stone mastic asphalt, it is characterised in that：Including following operation
Step,
（1）Determined not filling gradation composition and bitumen content that anti-ice freezes additive according to mix type, that is, determine that basis is matched somebody with somebody
Composition and division in a proportion；
（2）Determine the bulk density of coarse aggregate and calculate the voidage of elementary mix ratio；
（3）Calculate anti-ice and freeze additive volume；
（4）Sequentially added in pot after mineral aggregate, fiber stabilizer mix and stir being mixed and stirred, add pitch and mix and stir, be eventually adding anti-ice jelly
Additive is mixed and stirred, and obtains target product；
Asphalt content improves 0.1% ~ 0.2% than the asphalt content in elementary mix ratio；
The voidage of the elementary mix ratio is 3% ± 0.1%；
It is that granular calcium chloride anti-ice freezes additive that the anti-ice, which freezes additive,；
It is 0.1 ~ 5mm that the granular calcium chloride anti-ice, which freezes additive particle size range,.
2. the spacetabs type anti-ice according to claim 1 freezes the preparation method of stone mastic asphalt, its feature
It is：Asphalt optimum content is determined using voidage as 4% by volume-designed method.
3. the spacetabs type anti-ice according to claim 1 freezes the preparation method of stone mastic asphalt, its feature
It is：The fiber stabilizer is lignocellulosic.
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| CN105926436B (en) * | 2016-04-22 | 2017-12-12 | 上海市政交通设计研究院有限公司 | The overhead pavement structure of driving safety under the conditions of a kind of microthermal climate |
| CN106045385A (en) * | 2016-05-29 | 2016-10-26 | 中铁四局集团第工程有限公司 | Preparation method of rubber asphalt mastic crushed stone mixture |
| CN109437671B (en) * | 2018-11-14 | 2021-10-29 | 湖南鑫长胜材料科技有限公司 | Salinization modified asphalt mixture and preparation method thereof |
| CN110395942A (en) * | 2019-07-26 | 2019-11-01 | 中交一公局第三工程有限公司 | Ice-melt disappear avenge asphalt and preparation method thereof, ice-melt disappears and avenges asphalt concrete pavement and its construction method |
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