CN1331947C - Modified asphaltum material and preparation process thereof - Google Patents
Modified asphaltum material and preparation process thereof Download PDFInfo
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- CN1331947C CN1331947C CNB2005100427811A CN200510042781A CN1331947C CN 1331947 C CN1331947 C CN 1331947C CN B2005100427811 A CNB2005100427811 A CN B2005100427811A CN 200510042781 A CN200510042781 A CN 200510042781A CN 1331947 C CN1331947 C CN 1331947C
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Abstract
The present invention discloses modified asphalt material and a preparation technology thereof. The present invention is polymer modified asphalt material which is used for stress absorption layers in the addition paving of old cement or asphalt pavements and the crack resistance measure of new roads. The modified asphalt material is made from 60 to 95.7 wt% of asphalt stock, 4 to 20 wt% of polymers, 0.2 to 10 wt% of cross linking agents and 0.1 to 10 wt% of compatilizers. The modified asphalt material of the present invention has the preparation technology that the raw materials are mixed at the temperature of 150 DEG C to 200 DEG C, and are sheared at high speed, the shearing speed is from 10000 to 20000RPM, the time is from 45 min to 90 min, and thus, the uniform, smooth and stable black polymer modified asphalt with a reticular structure is prepared. The modified asphalt material has good high temperature stability, low temperature flexibility and elastic recovery capability, and the modified asphalt material is mainly used for stress absorption layers in the additional paving of old roads or antireflection cracks of new roads.
Description
Technical field
The present invention relates to a kind of based on the fissured stress absorbing layer polymer modified asphalt of antireflection material and preparation method thereof.
Background technology
When present old cement pavement adopts flexible overlay or old asphalt pavement to adopt the asphalt overlay technology, may cause that asphaltum concrete cover-layer produces reflection crack or reflection crack because of the disease defective or the old cement concrete slab seam of underlying stratum; Cause that because of drying shrinkage, the temperature of semi-rigid material contracts basic unit produces the crack when semi-rigid type base is adopted on new road, and reflex on the oil mat.In order to solve reflection crack, usually adopt the stress absorbing layer technology, and the bituminous material that this technical requirements is adopted must possess high high-temperature stability, low temperature flexibility and elastic recovery capability, usually require softening temperature greater than 75 ℃, 5 ℃ ductilities greater than 55cm, 0 ℃ of ductility greater than 30cm, recovery of elasticity greater than 95%, and aging back 5 ℃ of ductilities greater than 45cm, recovery of elasticity greater than 80%, by U.S. SHRP performance grade scale, need reach more than the PG70-34, and plain asphalt or modifying asphalt commonly used are difficult to adapt to this requirement.
Summary of the invention
The purpose of this invention is to provide a kind of modifying asphalt, have high temperature, low-temperature performance is superior, elastic recovery capability is strong, can be applied in old road resurfacing and the Xin Lu antireflection crack stress absorbing layer.
Another object of the present invention provides the simple modified asphalt preparation method of a kind of technology.
Technical scheme of the present invention is achieved in that
A kind of modified pavement asphalt, composed of the following components by mass percentage:
Asphalt stock 60～95.7%
Polymkeric substance 4～20%
Linking agent 0.2～10%
Compatilizer 0.1～10%
The quality sum of each component is 100%.
Described asphalt stock is selected from petroleum pitch, and penetration degree requires 90～200dmm.
Described polymkeric substance is meant to be 1: 1～2 styrene-isoprene-phenylethene SIS and divinyl SB by mass percentage, mass percent is 1: 1～2 butadiene-styrene block thing SBR and divinyl SB, or mass percent is 1: 1 styrene-isoprene-phenylethene SIS and butadiene-styrene block thing SBR.
Described linking agent is selected from wherein a kind of in crystallization sulphur, SULPHUR POWDER, polyisobutene, the inorganic, metal oxide.
Described compatilizer is selected from catalytically cracked oil, solvent and extracts wherein a kind of in treated oil, the Yatall MA out.
A kind of process for preparing modified asphalt, at first be that 60～95.7% asphalt stock is heated to flow state 150 ℃～200 ℃ temperature with mass percent, slowly start shears, velocity of shear 10000-20000 RPM, polymkeric substance with 4～20% joins in the asphalt stock one by one, and is smooth even until shearing; Adding mass percent more respectively is 0.2～10% linking agent and 0.1～10% stablizer, continues to be trimmed to be uniformly dispersed time 45min～90min; Adding mass percent at last is that 0.1～10% compatilizer is regulated, and makes modifying asphalt.
Described polymkeric substance is meant to be 1: 1～2 styrene-isoprene-phenylethene SIS and divinyl SB by mass percentage, mass percent is 1: 1～2 butadiene-styrene block thing SBR and divinyl SB, or mass percent is 1: 1 styrene-isoprene-phenylethene SIS and butadiene-styrene block thing SBR.
Described linking agent is selected from wherein a kind of in crystallization sulphur, SULPHUR POWDER, polyisobutene, the inorganic, metal oxide.
Described compatilizer is selected from catalytically cracked oil, solvent and extracts wherein a kind of in treated oil, the Yatall MA out.
The present invention has high-temperature behavior good (softening temperature＞75 ℃), low-temperature performance, and strong (5 ℃ of ductility＞55cm, 0 ℃ of ductility＞30cm), elastic recovery properties superior (25 ℃ of recovery of elasticity＞95%), (5 ℃ of ductilities behind the RTFOT＞45cm), recovery of elasticity (recovery of elasticity behind the RTFOT＞80%), performance classification reach the above characteristics of PG70-34 to the low-temperature ductility after particularly aging.
Embodiment
Below content of the present invention is described in further detail:
Embodiment one:
With mass percent be: 70% petroleum pitch, 5% styrene-isoprene-phenylethene SIS and 5% divinyl SB, 3% crystallization sulphur, 17% cycle oil be 150 ℃ of mixing, high speed shear, velocity of shear 10000 RPM, time 90min.Make the modifying asphalt of derivatized polymers.
Embodiment two:
With mass percent be: 80% petroleum pitch, 5% styrene-isoprene-phenylethene SIS and 5% butadiene-styrene block thing SBR, 5% SULPHUR POWDER, 5% solvent are extracted treated oil out 160 ℃ of mixing, high speed shear, velocity of shear 15000 RPM, time 60min.Make the modifying asphalt of derivatized polymers.
Embodiment three:
With mass percent be: 85% petroleum pitch, 3% butadiene-styrene block thing SBR and 4% divinyl SB, 7.5% Yatall MA, 0.5% inorganic, metal oxide are 180 ℃ of mixing, high speed shear, velocity of shear 10000 RPM, time 45min.Make the modifying asphalt of derivatized polymers.
Embodiment four:
With mass percent be: 80% petroleum pitch, 5% styrene-isoprene-phenylethene SIS and 5% butadiene-styrene block thing SBR, Yatall MA+0.5% polyisobutene of 9.5% are 180 ℃ of mixing, high speed shear, velocity of shear 17000 RPM, time 50min.Make the modifying asphalt of derivatized polymers.
Embodiment five:
With mass percent be: 87% petroleum pitch, 3% butadiene-styrene block thing SBR and 4% divinyl SB, 1% polyisobutene and 5% solvent are extracted treated oil out 200 ℃ of mixing, high speed shear, velocity of shear 18000 RPM, time 50min.Make the modifying asphalt of derivatized polymers.
Embodiment six:
With mass percent be: 70% petroleum pitch, 5% styrene-isoprene-phenylethene SIS and 11% divinyl SB, 5% inorganic, metal oxide and 9% Yatall MA are 180 ℃ of mixing, high speed shear, velocity of shear 20000 RPM, time 45min makes the modifying asphalt of derivatized polymers.
Several modifying asphalt routine tests are comparison sheet 1 as a result
Modifying asphalt PG classification typical test of the present invention is table 2 as a result
| Sample | Test subject | Unit | Test temperature (℃) | Test result | Test basis | |
| Initial binder | Viscosity | Pa.s | 135 | 2.425 | ASTM D4402 | |
| Flash-point | ℃ | / | 304 | T43 | ||
| Dynamic shear test, G*/sin δ | KPa | 64 | 2.02 | SHRP-TP5 | ||
| 70 | 1.41 | |||||
| 76 | 0.867 | |||||
| Rotating thin film baking oven (T240) residue | Mass loss | ％ | / | -0.2 | / | |
| Dynamic shear test, G*/sin δ | KPa | 64 | 4.16 | SHRP-TP5 | ||
| 70 | 2.92 | |||||
| 76 | 1.73 | |||||
| The pressure residue (PP1) that wears out | Dynamic shear test, G*sin δ | MPa | 22 | 0.394 | SHRP-TP5 | |
| 25 | 0.367 | |||||
| 28 | 0.240 | |||||
| 31 | 0.206 | |||||
| The camber beam rheological test | Creep stiffness S | MPa | -18 | 133 | SHRP P1 | |
| Slope m | / | 0.388 | ||||
| Creep stiffness S | MPa | -24 | 322 | |||
| Slope m | / | 0.303 | ||||
By table 1, table 2 as can be known:
(1) although SBS properties-correcting agent can improve bituminous high and low temperature performance simultaneously, but want softening temperature is reached more than 75 ℃, 5 ℃ of ductilities are greater than 55cm, 0 ℃ of ductility reaches more than 95% greater than 30cm, recovery of elasticity, and aging back 5 ℃ of ductilities are greater than 45cm, recovery of elasticity is relatively more difficult greater than 80%, and particularly aging back low-temperature ductility and recovery of elasticity index are difficult to reach requirement.Though SBR modifying asphalt low-temperature ductility is good, its high-temperature behavior is poor.And the present invention utilized simultaneously related polymer a bit, can effectively solve the deficiency that common modifying asphalt is difficult to satisfy simultaneously performancees such as good high and low temperature, recovery of elasticity in conjunction with the property of stablizer.
When (2) modifying asphalt that adopts usually adopts the PG classification, the high temperature grading temperature is higher, the low temperature hierarchical temperature is lower, will require PG classification high temperature performance all to get well common modifying asphalt simultaneously is difficult to reach, and modifying asphalt PG of the present invention classification can reach PG70-34, and this is the key property that stress absorbing layer should possess.
Claims (7)
1, a kind of modified asphalt material is characterized in that, and is composed of the following components by mass percentage:
Asphalt stock 60～95.7%
Polymkeric substance 4～20%
Linking agent 0.2～10%
Compatilizer 0.1～10%
The quality sum of each component is 100%,
Described polymkeric substance is meant to be 1: 1～2 styrene-isoprene-phenylethene SIS and divinyl SB by mass percentage, mass percent is 1: 1～2 butadiene-styrene block thing SBR and divinyl SB, or mass percent is 1: 1 styrene-isoprene-phenylethene SIS and butadiene-styrene block thing SBR.
2, modified asphalt material according to claim 1 is characterized in that, described asphalt stock is selected from petroleum pitch, and penetration degree requires 90～200dmm.
3, modified asphalt material according to claim 1 is characterized in that, described linking agent is selected from wherein a kind of in crystallization sulphur, SULPHUR POWDER, polyisobutene, the inorganic, metal oxide.
4, modified asphalt material according to claim 1 is characterized in that, described compatilizer is selected from catalytically cracked oil, solvent and extracts wherein a kind of in treated oil, the Yatall MA out.
5, a kind of modified asphalt material preparation method as claimed in claim 1 is characterized in that:
At first be that 60～95.7% asphalt stock is heated to flow state 150 ℃～200 ℃ temperature with mass percent, slowly start shears, velocity of shear 10000-20000RPM is that 4～20% polymkeric substance joins in the asphalt stock one by one with mass percent, until shear smooth evenly; Adding mass percent more respectively is 0.2～10% linking agent and 0.1～10% stablizer, continues to be trimmed to be uniformly dispersed time 45min～90min; Adding mass percent at last is that 0.1～10% compatilizer is regulated, make modifying asphalt, described polymkeric substance is meant to be 1: 1～2 styrene-isoprene-phenylethene SIS and divinyl SB by mass percentage, mass percent is 1: 1～2 butadiene-styrene block thing SBR and divinyl SB, or mass percent is 1: 1 styrene-isoprene-phenylethene SIS and butadiene-styrene block thing SBR.
6, modified asphalt material preparation method according to claim 5 is characterized in that, described linking agent is selected from wherein a kind of in crystallization sulphur, SULPHUR POWDER, polyisobutene, the inorganic, metal oxide.
7, modified asphalt material preparation method according to claim 5 is characterized in that, described compatilizer is selected from catalytically cracked oil, solvent and extracts wherein a kind of in treated oil, the Yatall MA out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100427811A CN1331947C (en) | 2005-06-09 | 2005-06-09 | Modified asphaltum material and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100427811A CN1331947C (en) | 2005-06-09 | 2005-06-09 | Modified asphaltum material and preparation process thereof |
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| Publication Number | Publication Date |
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| CN1693372A CN1693372A (en) | 2005-11-09 |
| CN1331947C true CN1331947C (en) | 2007-08-15 |
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| CNB2005100427811A Expired - Fee Related CN1331947C (en) | 2005-06-09 | 2005-06-09 | Modified asphaltum material and preparation process thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077933B (en) * | 2006-05-22 | 2011-04-20 | 深圳市海川实业股份有限公司 | Asphalt cement and preparation method thereof |
| CN101125956B (en) * | 2006-08-18 | 2011-05-25 | 深圳市海川实业股份有限公司 | High viscosity color asphalt cement for laying noise-reducing drainage road surfaces |
| CN101864717A (en) * | 2010-06-29 | 2010-10-20 | 广州大学 | Semi-flexible base material and production method thereof |
| CN105440704A (en) * | 2015-11-29 | 2016-03-30 | 惠州卫生职业技术学院 | Asphalt composition and preparation process thereof |
| CN105368084B (en) * | 2015-12-16 | 2017-11-10 | 刘小平 | A kind of modified pitch and preparation method thereof |
| CN108102397A (en) * | 2017-12-04 | 2018-06-01 | 杭州睿琦化工科技有限公司 | Modified pitch and bituminous concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5221703A (en) * | 1992-05-14 | 1993-06-22 | Mcconnaughay Technologies, Inc. | Engineered modified asphalt cement |
| US6057390A (en) * | 1998-06-03 | 2000-05-02 | Ashland Inc. | Crosslinkable polymer-modified asphalt and its method of preparation |
| CN1287133A (en) * | 2000-08-17 | 2001-03-14 | 上海交通大学 | Modified asphalt for road |
| US6429241B1 (en) * | 1997-04-04 | 2002-08-06 | Polyphalt Llc | Elastomer-modified bituminous compositions |
-
2005
- 2005-06-09 CN CNB2005100427811A patent/CN1331947C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5221703A (en) * | 1992-05-14 | 1993-06-22 | Mcconnaughay Technologies, Inc. | Engineered modified asphalt cement |
| US6429241B1 (en) * | 1997-04-04 | 2002-08-06 | Polyphalt Llc | Elastomer-modified bituminous compositions |
| US6057390A (en) * | 1998-06-03 | 2000-05-02 | Ashland Inc. | Crosslinkable polymer-modified asphalt and its method of preparation |
| CN1287133A (en) * | 2000-08-17 | 2001-03-14 | 上海交通大学 | Modified asphalt for road |
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| CN1693372A (en) | 2005-11-09 |
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