CN103043962A - Mixture for normal-temperature repairing of asphalt pavement pits, and preparation method and application thereof - Google Patents
Mixture for normal-temperature repairing of asphalt pavement pits, and preparation method and application thereof Download PDFInfo
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- CN103043962A CN103043962A CN201110313833XA CN201110313833A CN103043962A CN 103043962 A CN103043962 A CN 103043962A CN 201110313833X A CN201110313833X A CN 201110313833XA CN 201110313833 A CN201110313833 A CN 201110313833A CN 103043962 A CN103043962 A CN 103043962A
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Abstract
The invention discloses a mixture for normal-temperature repairing of asphalt pavement pits, and a preparation method and application thereof. The mixture for normal-temperature repairing of asphalt pavement pits comprises the following materials in percentage by mass: 5-7% of asphalt liquid, 84.5-90% of stone, 4-8% of cement and 0.1-0.5% of water rubber powder, wherein asphalt liquid comprises the following materials in percentage by mass: 70-80% of modified asphalt and 20-30% of diluter, or 52-66% of plain asphalt, 4-8% of polymer and 30-40% of diluter. The repairing mixture contains fewer components, and is simple in preparation method, low in cost and suitable for application; and the property of the mixture for normal-temperature repairing of asphalt pavement can fully meet the requirements of specifications. In addition, the construction method of the mixture is simple, and the repaired pits are less prone to loosen and peel.
Description
Technical field
The present invention relates to a kind of asphalt pavement pit normal temperature patching compound and its preparation method and application.
Background technology
Bituminous pavement loose, hole, hole can occur, the disease such as peel off in long-term use procedure.Pavement disease has not only reduced the service ability on road surface, and major effect road normal traffic, the hole, hole on super expressway even may cause traffic accident.Therefore, the hole, hole that occurs for the road surface, the damaged needs are in time repaired.
At present, repairing hole, hole, road surface mostly adopts hot-mix asphalt mixture, emulsified bitumen to mix compound and three kinds of forms of solvent-borne type normal temperature patching compound of system.Hot-mix asphalt mixture is concentrated for the place, the pavement maintenance that quantities is larger is feasible, but disperse for the place, the pavement maintenance that quantities is little, not only the factor amount very little and the pitch batching plant is difficult to produce, and construction seasons is short, and in addition, unit in charge of construction also feels inconvenience to insulation and the repair operation of hot asphalt mixture.
Emulsified bitumen has prolonged the construction seasons of highway maintenance, can carry out maintenance of surface under the temperature more than 5 ℃, but that emulsified bitumen is mixed the compound molding time of system is longer, delays the open to traffic time.In addition, emulsified bitumen and building stones stick poor performance, cause occurring easily loose after the pavement patching and peeling off.
Solvent-borne type normal temperature patching compound belongs to round-the-clock patching compound, and is easy to use, and construction is simple, and is widely applicable.Packed storage after compound can once be mixed can directly be used during repairing, does not need secondary processing.The normal temperature patching compound gets final product open to traffic after normal temperature is repaired roller-compaction, and can keep stable, not loose, do not come off, although there is soft sensation on the road surface, does not affect use properties.Solvent volatilizees gradually under the effect of driving and air, and pitch is retrogradation progressively, and the distribution between the mixture particle is tightr, and voidage reduces, and cohering that mineral aggregate is mutual is more firm.Passing in time, its distortion and intensity can progressively be stablized, and meet or exceed the cooled performance of hot asphalt mixture.Compare with the conventional repair material, its performance and characteristics have significant advantage.CN03128305.5 discloses a kind of road surface normal temperature patching material and preparation method thereof.Repair material is formulated by pitch, retardant, guarantor's stick or ore.Pitch comprises hot-mix asphalt mixture, eu-bitumen or modified liquid pitch; Properties-correcting agent comprises SBS (thermoplastic elastomer), GS (styrene-butadiene rubber(SBR) powder), waste and old EPS (bubble wrap of abandoning etc.); Protect stick and comprise gasoline, kerosene, diesel oil, retardant is furfuryl alcohol.The preparation method is with pitch and mineral aggregate, retardant, guarantor's stick or asphalt and retardant, protects stick and stir and form.The standby normal temperature repair material of this patent system is not crosslinked because of polymkeric substance such as SBS, so poor stability, and polymkeric substance can be assembled, and the easy damage in the road surface of repairing and the required component of normal temperature patching material are more, and preparation is complicated; In addition, the performance that does not relate to repair material in this patent.CN200810228403.6 discloses a kind of pavement patching material.Consisting of of patching material: pitch, extraction oil, shoddy, superpolymer, crosslinking coagent.The preparation method is: with asphalt heating to 100 ℃～180 ℃, add superpolymer and stir; To extract oil out and be heated to 100 ℃～160 ℃, and add shoddy and begin to stir, stir; Stir after converting two kinds of mixtures stirring are mixed, add crosslinking coagent, stirring gets final product.The patching material of this patent disclosure belongs to hot asphalt repair material category.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of asphalt pavement pit normal temperature patching compound and
Preparation method and application.The contained component of this patching compound is few, and the preparation method is simple, and cost is low, is suitable for using, and mixture performance satisfies the bituminous pavement normal temperature repair material of code requirement fully; In addition, the constructional method of compound is simple, and the hole groove of repairing is not loose not to be peeled off.
A kind of asphalt pavement pit normal temperature patching compound is calculated in mass percent and comprises:
Asphaltic liquid 5%～7%;
Building stones 84.5%～90%;
Cement 4%～8%;
Shoddy 0.1%～0.5%;
Wherein, asphaltic liquid is calculated in mass percent and comprises:
Modifying asphalt 70%～80%;
Thinner 20%～30%;
Perhaps
Plain asphalt 52%～66%;
Polymkeric substance 4%～8%;
Thinner 30%～40%.
Waste Crumb rubber described in the asphalt pavement pit normal temperature patching compound of the present invention is waste-tyre rubber-powder, waste Crumb rubber granularity 60～200 orders; Described building stones are formed by certain grating is mixed by the building stones of 0.075mm～13.2mm; Described cement is ordinary Portland cement.
Thinner described in the asphalt pavement pit normal temperature patching compound of the present invention is selected one or more mixing in No. 6 solvent oils, No. 120 solvent oils, No. 200 solvent oils; Described modifying asphalt can be SBS, SBR, SBS/SBR composite modified asphalt, and its penetration degree (25 ℃) is 70～80; Described plain asphalt penetration degree (25 ℃) is 90～110; Described polymkeric substance is poly-octene rubber.
A kind of preparation method of asphalt pavement pit normal temperature patching compound, comprise following content (1) preparation asphaltic liquid: add in the modifying asphalt under 100～120 ℃ under thinner or 120～140 ℃ and in plain asphalt, add polymkeric substance, be stirred to cannot see and be cooled to 100～120 ℃ behind the polymkeric substance and add thinners; (2) preparation bituminous pavement normal temperature is repaired blended stock: the building stones that level prepares are dried, remain on 70～90 ℃ stand-by, mix and stir pot and be heated to 70～90 ℃, building stones, shoddy and cement are added in the hot mix pot, add the asphaltic liquid for preparing, the compound that mixes cools off to room temperature, then seals up for safekeeping stand-by.
A kind of application of asphalt pavement pit normal temperature patching compound comprises the steps:
(1) hole groove cleaning: the side cut that the hole groove that is repaired should be neat, rubble, cleaning waste slag around reaching in the hole groove to be repaired is clean, must not there be the foreign material such as mud, ice cube in the groove of hole;
(2) edge brushing emulsified bitumen or Resins, epoxy: after having cleared up the hole groove, normal temperature cured type aqueous epoxy resins and the aqueous epoxy resin curing agent thereof brushing a coating emulsified asphalt or mix with the bottom around;
(3) fill up the hole groove: according to the suitable building stones grating of the hole shallow selection of groove depth, enough pitch cold-patch materials are filled in the groove of hole, until filler l.4-1.6 cm above ground level, fill up rear hole groove centre and answer a little higher than road surface and curved all around, when if groove depth is cheated on the road surface greater than 5cm, answer layering to fill up, successively compacting, every layer of 3cm-5cm;
(4) compacting: after laying evenly, according to environment on the spot and size and the degree of depth of repairing area, selects suitable compactor and method to carry out compacting, as artificial with back-off compacting, manpower rammer, vibratory plate compactor compacting, street roller compacting etc.;
(5) cleaning: can sprinkle one deck stone flour or fine sand at surface uniform after compacting is finished, and clean back and forth with cleaning device, so that fine sand fills up surface void;
(6) check and accept: the hole rooved face of having repaired should be bright and clean, smooth, the corner must compacting all around without wheelmark, hole groove, without loose phenomenon.
Compared with prior art, the present invention has following advantage:
(1) the present invention is by selecting suitable component and component concentration, and by the mutual synergy between each component, the asphalt pavement pit normal temperature patching compound of preparing meets service requirements fully, meets or exceeds its necessary technical indicator;
(2) the contained component of asphalt pavement pit normal temperature patching compound of the present invention is few, and cost is low, and the simple easy handling of preparation method is suitable for using;
(3) asphalt pavement pit normal temperature patching compound of the present invention is in the pit repairing process, around the hole and the normal temperature cured type brushing a coating emulsified asphalt or mix of bottom, aqueous epoxy resins and aqueous epoxy resin curing agent thereof have improved cohesiveness and the repair efficiency repaired between the edge compound.
Embodiment
Further specify process of the present invention and effect below in conjunction with embodiment, but following examples are not construed as limiting the invention.
Embodiment 1
No. 90 matrix pitch 600g in the sand stir and are cooled to 120～140 ℃, add poly-octene rubber 50g; Then be cooled to 100～120 ℃ and slowly add No. 120 solvent oil 250g, No. 200 solvent oil 100g, stirring to make asphaltic liquid, and asphaltic liquid character sees Table 1.(the hole groove depth is less than 5cm) carries out the preparation of normal temperature patching compound for the hole groove of diving.The building stones proportioning of selecting sees Table 2.Building stones are dried, remain on 70～90 ℃ stand-by, mix and stir pot and be heated to 70～90 ℃, building stones 9.25kg, 325 cement 0.75kg(size of mesh＜0.075mm) and 80 order shoddy 0.05kg are added in the hot mix pot stir, add at last the asphaltic liquid stirring 3min that 0.7kg prepares, the compound that mixes cools off to room temperature, then seals up for safekeeping stand-by.Normal temperature patching compound at room temperature pros and cons respectively hits real 50 moulding, then at 110 ℃ of lower maintenance 24h, after the taking-up again pros and cons respectively hit real 25 times, at room temperature erect together with die trial and place 24h, after the demoulding in 60 ℃ of Water Tanks with Temp.-controlled health 30min, carry out Marshall Test.The normal temperature patching compound character of preparation sees Table 3.
Embodiment 2
Penetration degree (25 ℃) is SBS heat modification pitch 750g in 90 the sand, stirs and is cooled to 100～120 ℃, then slowly adds solvent oil 250g No. 120, and stirring to make asphaltic liquid, and asphaltic liquid character sees Table 1.(the hole groove depth is greater than 5cm) carries out the preparation of normal temperature patching compound for the dell groove.The building stones proportioning of selecting sees Table 2.Building stones are dried, remain on 70～90 ℃ stand-by, mix and stir pot and be heated to 70～90 ℃, building stones 9.5kg, 425 cement 0.5kg(size of mesh＜0.075mm) and 60 order shoddy 0.02kg are added in the hot mix pot stir, add at last the asphaltic liquid stirring 3min that 0.55kg prepares, the compound that mixes cools off to room temperature, then seals up for safekeeping stand-by.Normal temperature patching compound at room temperature pros and cons respectively hits real 50 moulding, then at 110 ℃ of lower maintenance 24h, after the taking-up again pros and cons respectively hit real 25 times, at room temperature erect together with die trial and place 24h, after the demoulding in 60 ℃ of Water Tanks with Temp.-controlled health 30min, carry out Marshall Test.The normal temperature patching compound character of preparation sees Table 3.
Table 1 asphaltic liquid character
| Project | Embodiment 1 | Embodiment 2 |
| Solid content, % | 75 | 82 |
| Adhesivity (water-boiling method) with mineral aggregate | 2/3 | 2/3 |
| The residual polyalcohol asphalt performance | ? | ? |
| Penetration degree (25 ℃)/0.1mm | 82 | 75 |
| Softening temperature/℃ | 63 | 58 |
| Ductility (5 ℃)/cm | 45 | 33 |
| Stability | Long-term room temperature leaves standstill not stratified | Long-term room temperature leaves standstill not stratified |
Table 2 building stones proportioning
| Size of mesh (mm) | ＞13.2 | 9.5～13.2 | 4.75～9.5 | 2.36～4.75 | 1.18～2.36 | 0.6～1.18 | 0.3～0.6 | 0.15～0.3 | 0.075～0.15 |
| Embodiment 1 grating building stones, kg | ? | ? | 0.5 | 3 | 2 | 1.5 | 1 | 0.75 | 0.5 |
| Embodiment 2 grating building stones, kg | ? | 0.5 | 3.5 | 2 | 2 | 0.5 | 0.3 | 0.4 | 0.3 |
Table 3 normal temperature patching compound character
| Project | Embodiment 1 | Embodiment 2 | Technical indicator |
| Marshall stability, KN | 5.55 | 6.2 | ＞5 |
| Flow valuve, 0.1mm | 35 | 30 | 20～50 |
| Remarks | Compound normal temperature sealing placement sponginess is good | Compound normal temperature sealing placement sponginess is good | ? |
Claims (10)
1. asphalt pavement pit normal temperature patching compound is characterized in that: be calculated in mass percent and comprise:
Asphaltic liquid 5%～7%;
Building stones 84.5%～90%;
Cement 4%～8%;
Shoddy 0.1%～0.5%;
Wherein, asphaltic liquid is calculated in mass percent and comprises:
Modifying asphalt 70%～80%;
Thinner 20%～30%;
Perhaps
Plain asphalt 52%～66%;
Polymkeric substance 4%～8%;
Thinner 30%～40%.
2. method according to claim 1, it is characterized in that: described waste Crumb rubber is waste-tyre rubber-powder, waste Crumb rubber granularity 60～200 orders.
3. method according to claim 1 is characterized in that: described building stones are formed by certain grating is mixed by the building stones of 0.075mm～13.2mm.
4. method according to claim 1, it is characterized in that: described cement is ordinary Portland cement.
5. method according to claim 1 is characterized in that: described thinner is selected one or more mixing in No. 6 solvent oils, No. 120 solvent oils, No. 200 solvent oils.
6. method according to claim 1, it is characterized in that: described modifying asphalt is SBS, SBR, SBS/SBR composite modified asphalt, its penetration degree (25 ℃) is 70～80.
7. method according to claim 1, it is characterized in that: described plain asphalt penetration degree (25 ℃) is 90～11.
8. method according to claim 1 is characterized in that: described polymkeric substance is poly-octene rubber.
9. the preparation method of the described asphalt pavement pit normal temperature of claim 1 patching compound, it is characterized in that: comprise following content: (1) preparation asphaltic liquid: add in the modifying asphalt under 100～120 ℃ under thinner or 120～140 ℃ and in plain asphalt, add polymkeric substance, be stirred to cannot see and be cooled to 100～120 ℃ behind the polymkeric substance and add thinners; (2) preparation bituminous pavement normal temperature is repaired blended stock: the building stones that level prepares are dried, remain on 70～90 ℃ stand-by, mix and stir pot and be heated to 70～90 ℃, building stones, shoddy and cement are added in the hot mix pot, add the asphaltic liquid for preparing, the compound that mixes cools off to room temperature, then seals up for safekeeping stand-by.
10. the application of asphalt pavement pit normal temperature patching compound claimed in claim 1 comprises the steps:
(1) hole groove cleaning: the side cut that the hole groove that is repaired should be neat, rubble, cleaning waste slag around reaching in the hole groove to be repaired is clean, must not there be the foreign material such as mud, ice cube in the groove of hole;
(2) edge brushing emulsified bitumen or Resins, epoxy: after having cleared up the hole groove, normal temperature cured type aqueous epoxy resins and the aqueous epoxy resin curing agent thereof brushing a coating emulsified asphalt or mix with the bottom around;
(3) fill up the hole groove: according to the suitable building stones grating of the hole shallow selection of groove depth, enough pitch cold-patch materials are filled in the groove of hole, until filler l.4-1.6 cm above ground level, fill up rear hole groove centre and answer a little higher than road surface and curved all around, when if groove depth is cheated on the road surface greater than 5cm, answer layering to fill up, successively compacting, every layer of 3cm-5cm;
(4) compacting: after laying evenly, according to environment on the spot and size and the degree of depth of repairing area, selects suitable compactor and method to carry out compacting, as artificial with back-off compacting, manpower rammer, vibratory plate compactor compacting, street roller compacting etc.;
(5) cleaning: can sprinkle one deck stone flour or fine sand at surface uniform after compacting is finished, and clean back and forth with cleaning device, so that fine sand fills up surface void;
(6) check and accept: the hole rooved face of having repaired should be bright and clean, smooth, the corner must compacting all around without wheelmark, hole groove, without loose phenomenon.
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| CN105366997A (en) * | 2015-12-01 | 2016-03-02 | 吉林大学 | Pavement pit patching material used under low-temperature condition and construction treatment method for pavement pit patching material |
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| CN108411752A (en) * | 2018-02-09 | 2018-08-17 | 温州市城南市政建设维修有限公司 | The restorative procedure of asphalt pavement pit |
| CN108384258A (en) * | 2018-02-13 | 2018-08-10 | 西咸新区众力沥青有限公司 | A kind of bitumen polymer modification cold mixing asphalt cold repairing and its preparation |
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