JP2015143340A5 - Polymer-modified asphalt composition and method for producing the same - Google Patents
Polymer-modified asphalt composition and method for producing the same Download PDFInfo
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- JP2015143340A5 JP2015143340A5 JP2014251229A JP2014251229A JP2015143340A5 JP 2015143340 A5 JP2015143340 A5 JP 2015143340A5 JP 2014251229 A JP2014251229 A JP 2014251229A JP 2014251229 A JP2014251229 A JP 2014251229A JP 2015143340 A5 JP2015143340 A5 JP 2015143340A5
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- sbs
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- asphalt composition
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- 239000010426 asphalt Substances 0.000 title claims description 18
- 239000000203 mixture Substances 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229920000468 Polystyrene-block-polybutadiene-block-polystyrene Polymers 0.000 claims description 51
- PPBRXRYQALVLMV-UHFFFAOYSA-N styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims 3
Description
本発明は、上述した問題点に鑑みて案出されたものであり、その目的とするところは、従来よりも低い温度において骨材と混合することによるアスファルト混合物の製造と施工を行なうことができ、重交通用舗装として十分な強度の発現も両立させることができるポリマー改質アスファルト組成物を提供することにある。また本発明は、更に１８０℃における粘度を低下させることにより、施工性をより改善することができるポリマー改質アスファルト組成物及びその製造方法を提供することも目的とする。 The present invention has been devised in view of the above-mentioned problems, and the object of the present invention is to manufacture and construct an asphalt mixture by mixing with aggregate at a temperature lower than that of the conventional one. Another object of the present invention is to provide a polymer-modified asphalt composition capable of achieving both sufficient strength development as heavy traffic pavement. Another object of the present invention is to provide a polymer-modified asphalt composition that can further improve the workability by lowering the viscosity at 180 ° C. and a method for producing the same.
上述した課題を解決するために、本発明を適用したポリマー改質アスファルト組成物は、ベースアスファルトと、第１のスチレン-ブタジエン-スチレンブロック共重合体（第１のＳＢＳ）と、上記第１のＳＢＳよりも分子長が小さく、スチレン含有比率が高い第２のスチレン-ブタジエン-スチレンブロック共重合体（第２のＳＢＳ）とを含有し、上記第１のＳＢＳにおける分子長は、上記第２のＳＢＳにおける分子長の１．８倍以上とされ、上記第１のＳＢＳにおけるスチレンブロック長をＬＳ１とし、上記第２のＳＢＳにおけるスチレンブロック長をＬＳ２としたとき、ＬＳ２／ＬＳ１が０．７〜１．４であり、上記第２のＳＢＳの含有量／上記第１のＳＢＳの含有量が、質量比で１〜４であることを特徴とする。
また本発明を適用したポリマー改質アスファルト組成物の製造方法は、ベースアスファルトに少なくとも第１のＳＢＳと上記第１のＳＢＳよりも分子長の小さい第２のＳＢＳとを添加する添加工程と、上記添加工程後、前記第１のＳＢＳおよび第２のＳＢＳを少なくとも添加した上記ベースアスファルトを攪拌する攪拌工程と、を有し、上記添加工程において添加する前記第１のＳＢＳは、前記第２のＳＢＳの分子長の１．８倍以上の分子長を有し、上記第１のＳＢＳにおけるスチレンブロック長をＬＳ１とし、上記第２のＳＢＳにおけるスチレンブロック長をＬＳ２としたとき、ＬＳ２／ＬＳ１が０．７〜１．４であり、上記第２のＳＢＳの含有量／上記第１のＳＢＳの含有量が、質量比で１〜４となるように混合することを特徴とする。
In order to solve the above-described problems, a polymer-modified asphalt composition to which the present invention is applied includes a base asphalt, a first styrene-butadiene-styrene block copolymer (first SBS), and the first first A second styrene-butadiene-styrene block copolymer (second SBS) having a smaller molecular length than SBS and a high styrene content ratio, and the molecular length in the first SBS is the second When the styrene block length in the first SBS is LS1 and the styrene block length in the second SBS is LS2, the LS2 / LS1 is 0.7 to 1 And the content of the second SBS / the content of the first SBS is 1 to 4 in terms of mass ratio.
A method for producing a polymer-modified asphalt composition to which the present invention is applied includes an addition step of adding at least a first SBS and a second SBS having a molecular length smaller than that of the first SBS to the base asphalt, A stirring step of stirring the base asphalt to which at least the first SBS and the second SBS are added after the addition step, and the first SBS added in the addition step is the second SBS When the styrene block length in the first SBS is LS1 and the styrene block length in the second SBS is LS2, the LS2 / LS1 is 0.00. It is 7-1.4, It mixes so that content of said 2nd SBS / content of said 1st SBS may be 1-4 by mass ratio.
Claims (6)
第１のスチレンーブタジエンースチレンブロック共重合体（第１のＳＢＳ）と、
上記第１のＳＢＳよりも分子長が小さく、スチレン含有比率が高い第２のスチレンーブタジエンースチレンブロック共重合体（第２のＳＢＳ）とを含有し、
上記第１のＳＢＳにおける分子長は、上記第２のＳＢＳにおける分子長の１．８倍以上とされ、
上記第１のＳＢＳにおけるスチレンブロック長をＬＳ１とし、上記第２のＳＢＳにおけるスチレンブロック長をＬＳ２としたとき、ＬＳ２／ＬＳ１が０．７〜１．４であり、
上記第２のＳＢＳの含有量／上記第１のＳＢＳの含有量が、質量比で１〜４であることを特徴とするポリマー改質アスファルト組成物。 With base asphalt,
A first styrene-butadiene-styrene block copolymer (first SBS);
Containing a second styrene-butadiene-styrene block copolymer (second SBS) having a molecular length smaller than that of the first SBS and a high styrene content ratio,
The molecular length in the first SBS is at least 1.8 times the molecular length in the second SBS,
When the styrene block length in the first SBS is LS1, and the styrene block length in the second SBS is LS2, LS2 / LS1 is 0.7 to 1.4,
The polymer-modified asphalt composition, wherein the content of the second SBS / the content of the first SBS is 1 to 4 by mass ratio.
上記添加工程後、前記第１のＳＢＳおよび第２のＳＢＳを少なくとも添加した上記ベースアスファルトを攪拌する攪拌工程と、を有し、A stirring step of stirring the base asphalt added with at least the first SBS and the second SBS after the adding step;
上記添加工程において添加する前記第１のＳＢＳは、前記第２のＳＢＳの分子長の１．８倍以上の分子長を有し、The first SBS added in the addition step has a molecular length of 1.8 times or more of the molecular length of the second SBS,
上記第１のＳＢＳにおけるスチレンブロック長をＬＳ１とし、上記第２のＳＢＳにおけるスチレンブロック長をＬＳ２としたとき、ＬＳ２／ＬＳ１が０．７〜１．４であり、When the styrene block length in the first SBS is LS1, and the styrene block length in the second SBS is LS2, LS2 / LS1 is 0.7 to 1.4,
上記第２のＳＢＳの含有量／上記第１のＳＢＳの含有量が、質量比で１〜４となるように混合することを特徴とするポリマー改質アスファルト組成物の製造方法。Mixing so that content of said 2nd SBS / content of said 1st SBS may be 1-4 by mass ratio, The manufacturing method of the polymer modified asphalt composition characterized by the above-mentioned.
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| JP2014251229A JP6479448B2 (en) | 2013-12-27 | 2014-12-11 | Polymer-modified asphalt composition and method for producing the same |
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| JP2015143340A JP2015143340A (en) | 2015-08-06 |
| JP2015143340A5 true JP2015143340A5 (en) | 2017-12-28 |
| JP6479448B2 JP6479448B2 (en) | 2019-03-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6782587B2 (en) * | 2016-09-01 | 2020-11-11 | 出光興産株式会社 | Workability evaluation method of asphalt mixture and manufacturing method of asphalt mixture |
| WO2018055976A1 (en) * | 2016-09-26 | 2018-03-29 | 昭和シェル石油株式会社 | Polymer-modified asphalt composition |
| JP6912951B2 (en) * | 2016-09-26 | 2021-08-04 | 出光興産株式会社 | Polymer modified asphalt composition |
| KR102251010B1 (en) * | 2017-11-23 | 2021-05-11 | 주식회사 엘지화학 | Block copolymer compositon, method for preparing the composition and asphalt composition comprising the composition |
| CN108517128B (en) * | 2018-05-17 | 2020-12-01 | 武汉科技大学 | Liquid SBS modified asphalt and preparation method thereof |
| CN110459270A (en) * | 2019-08-12 | 2019-11-15 | 南京林业大学 | Pitch and modifying agent compatible system method for establishing model |
| DE112020006030T5 (en) | 2020-02-10 | 2022-10-06 | Idemitsu Kosan Co., Ltd. | SILANE-CONTAINING COMPOUND AND MODIFIED HYDROGENATED PETROLEUM RESIN |
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| JP3748660B2 (en) * | 1997-04-02 | 2006-02-22 | 旭化成ケミカルズ株式会社 | Block copolymer composition for asphalt |
| JP2001040218A (en) * | 1999-07-28 | 2001-02-13 | Bridgestone Corp | Modified asphalt composition |
| BRPI0509909A (en) * | 2004-04-14 | 2007-09-18 | Kraton Polymers Res Bv | polymer modified bitumen composition, asphalt binder, hot mix asphalt, pavement, bituminous roofing composition, easily welded roll roofing membrane, and, polymeric composition |
| EP1586606A1 (en) * | 2004-04-14 | 2005-10-19 | KRATON Polymers Research B.V. | An asphalt binder based on polymer modified bitumen, hot mix asphalts made thereof, and pavements made therefrom |
| TWI422635B (en) * | 2004-06-18 | 2014-01-11 | Kraton Jsr Elastomers K K | Modified block composition for modified asphalt, a method for producing the same, and a bituminous composition |
| JP5615679B2 (en) * | 2010-11-29 | 2014-10-29 | 昭和シェル石油株式会社 | Polymer modified asphalt composition |
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