CN102173663A - Waterborne epoxy modified emulsified asphalt concrete for steel bridge surface and preparation method thereof - Google Patents
Waterborne epoxy modified emulsified asphalt concrete for steel bridge surface and preparation method thereof Download PDFInfo
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Abstract
The invention provides a waterborne epoxy modified emulsified asphalt concrete for a steel bridge surface and a preparation method thereof. The waterborne epoxy modified emulsified asphalt concrete for the steel bridge surface is prepared by the following steps of: adding waterborne epoxy resin, a curing agent, and a stabilizing agent into modified emulsified asphalt, continuously stirring until the mixture is uniform, and shearing to obtain waterborne epoxy resin modified emulsified asphalt emulsion; and stirring coarse aggregate and fine aggregate in a container, adding the waterborne epoxy resin modified emulsified asphalt and then stirring, adding a filler and then mixing and stirring, and adding cement and stirring to obtain the waterborne epoxy modified emulsified asphalt concrete. A paving material prepared by the method has the characteristics of environment-friendliness, low volatile organic compound (VOC), low energy consumption, high bonding strength with a steel plate, high cryogenic stabilization, excellent water stability performance, high tenacity, and high fatigue resistance performance.
Description
Technical field
The invention belongs to building material technical field, relate in particular to epoxide modified emulsified bitulith of a kind of steel bridge face use and preparation method thereof.
Background technology
Large-span steel box girder bridge floor paving material is a focus and difficult point in the world always.Bridge deck pavement material is laid immediately on the steel plate, carry at traffic load, wind, under the factor affecting such as temperature variation and earthquake, its stressed and distortion is far beyond highway pavement or airstrip complexity, thereby its intensity, deformation stability, fatigue durability etc. are all had requirements at the higher level.
Big-span steel bridge deflection under the effect of temperature and load is very big, and steel case beam has good temperature conduction, is subject to the influence that outside temperature changes.In summer high-temperature season, the steel plate observed temperature of steel case top surface of the beam can reach 70 ℃, and these all are the distinguishing features that steel box girder bridge is different from other bridges.This just requires steel box girder bridge floor paving material itself should have very high intensity, good antifatigue, excellent high-temperature stability and water stability, and the shrinkage coefficient under cold condition should be close etc. with steel plate a series of good characteristic.At present, early stage damages such as high temperature rut, laterally passing, vertically passing, fatigue cracking generally appear in domestic big-span steel bridge asphalt pavement layer material, have had a strong impact on the service quality of bridge, have caused enormous economic loss.
The at present domestic modification SMA bituminous concrete (Stone Mastic Asphalt) that generally uses exists the situation of wretched insufficiency in work-ing life, often is on active service large-area infringement just to occur less than 2 years, causes very big financial loss.The more successful paving steel bridge deck material of external application mainly comprises pouring asphalt concrete and epoxy asphalt concrete.Though pouring asphalt concrete is strong with the steel plate cohesive force, construction temperature height (reaching more than 210 ℃), energy consumption are big, and the asphalt content height, are subject to high temperature and destroy.The performance of epoxy asphalt concrete is subjected to the influence of temperature, ambient moisture, steel plate clean level bigger, if Construction control is not strict, will cause epoxy asphalt concrete diseases such as rut, passing, crack to occur.And the epoxy asphalt concrete cost is too high, curing time is long.More than external successful scheme be subjected to himself the special complicated weather effect of limitation and China, its large-scale promotion application has been produced very big restriction.Hot-mixed asphaltic concrete (HMA) is another employed paving steel bridge deck material.Use the hot-mixed asphaltic concrete can exhaust emission gas, cause the dwindling of the mass consumption of environment damage, the energy and people's existence circle, this sustainable road with China's development green runs in the opposite direction.
Summary of the invention
Technical problem to be solved by this invention is: at above-mentioned the deficiencies in the prior art, epoxide modified emulsified bitulith of a kind of steel bridge face use and preparation method thereof is provided, the pavement material that this method prepares have environmental protection, with steel plate cohesive strength height, high low-temperature stability and water stability can be good, high tenacity, characteristics that fatigue performance is good.
To achieve these goals, technical scheme of the present invention is:
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material (coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, cement) is 100:30～50:15～25:15～20:5～9; Described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:5～10:2～5:2～8 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
In the such scheme, described modified emulsifying asphalt is to split modified emulsifying asphalt in the positively charged ion or positively charged ion splits modified emulsifying asphalt slowly.
In the such scheme, described aqueous epoxy resins is aqueous epoxy emulsion GEM03, aqueous epoxy emulsion GEM02, AB-EP-51 aqueous epoxy resins or AB-EP-44 aqueous epoxy resins.
In the such scheme, described epoxy hardener is aqueous epoxy curing agent GCA01, aqueous epoxy curing agent GCA02, AB-HGA aqueous epoxy curing agent or AB-HGT aqueous epoxy resin curing agent.
In the such scheme, described stablizer is vinylsiloxane rubber, acryl lsothiocyanates or thionamic acid sodium.
In the such scheme, the index of the evaporation residue of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 59～62%, penetration degree 52～58,59～66 ℃ of softening temperatures, the ductility 24～27cm under 5 ℃.
In the such scheme, described coarse aggregate is basalt, diabase or limestone, 9.5 millimeters of nominal maximum aggregate sizes; Described fine aggregate is basalt, diabase or limestone, 4.75 millimeters of nominal maximum aggregate sizes.
The preparation method of the epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
By mass ratio is modified emulsifying asphalt: aqueous epoxy resins: epoxy hardener: stablizer=100:5～10:2～5:2～8, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, and standby;
Add earlier modified emulsifying asphalt in container, regulating pH is 5.5～6.5, adds aqueous epoxy resins, epoxy hardener and stablizer while stirring, and it is even to continue stirring until mixed solution, shears again, obtains aqueous epoxy resins modified emulsifying asphalt emulsion;
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:30～50:15～25:15～20:5～9, choose coarse aggregate, fine aggregate, filler, the above-mentioned aqueous epoxy resins modified emulsifying asphalt for preparing, reach cement, standby;
Coarse aggregate and fine aggregate are stirred in container, restir behind the interpolation aqueous epoxy resins modified emulsifying asphalt, add filler again and mix and stir, add cement at last and stir, obtain waterborne epoxy modified emulsified bitulith (the epoxide modified emulsified bitulith of steel bridge face use).
In the such scheme, coarse aggregate and fine aggregate were stirred in container 30～60 seconds, added behind the waterborne epoxy modified emulsified bitumen restir 60～90 seconds, add filler again and mixed and stirred 60～90 seconds, add cement at last and stirred 60～90 seconds, obtain waterborne epoxy modified emulsified bitulith.
In the such scheme, using dilute hydrochloric acid to regulate pH is 5.5～6.5, and shear time is 20～40 minutes, and the rotating speed of shears stator is 300-500 rev/min during shearing.
This research adopts waterborne epoxy modified emulsified bitulith as the paving steel bridge deck layer material.The film-forming process of aqueous epoxy resin emulsion has comprised coalescent, the diffusion of solidifying agent of evaporation of water, emulsion particle and the generation four-stage of crosslinking reaction.At first, emulsion particle and solidifying agent molecular dispersion are in water, evaporation along with moisture, the epoxy resin latex particle is in contact with one another, form packed structures, meanwhile, the solidifying agent molecular diffusion makes the reaction of small molecules polymerization of epoxy resins generate crosslinked bodily form macromole to the interface and the inner curing reaction that takes place thereof of epoxy particles.Water-base epoxy curing reaction and emulsified bitumen breakdown of emulsion carry out simultaneously, can strengthen bituminous concrete and steel plate cohesive force, obviously improve the resistance to elevated temperatures of bituminous concrete.In addition, because the hydration of cement-based material, the tridimensional network that the epoxy resin latex polymerization forms will intert in cement-hydrate, form inierpeneirating network structure with it, can form good crosslinked transition layer at the pitch-interface that gathers materials like this, improve interface binding intensity, strengthen the anti-water damage ability of bituminous concrete.
The invention has the beneficial effects as follows: the present invention selects for use waterborne epoxy modified emulsified bitulith to prepare the paving steel bridge deck layer material, on the one hand, adopt aqueous epoxy resins can solve solvent epoxy varnish to the strict demand of execution conditions, volatilization toxic organic compound and simple bituminous material at high temperature with problems such as the steel plate cohesive force is not strong, adopt emulsified bitumen can realize bituminous concrete cold mixing, cold-application on the other hand, solution HMA high energy consumption, the problem that environmental pollution is big.In sum, this environmental protection that the present invention prepares, cold mixing, low VOC(volatile organic compounds), less energy-consumption, with steel plate cohesive strength height, high low-temperature stability and water stability can be good, the novel paving steel bridge deck material of good, the long service life of high tenacity, fatigue performance, can give full play to the advantage of Resins, epoxy and emulsified bitumen.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:30:15:15:5, and described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:5:2:2 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
Described modified emulsifying asphalt is to split modified emulsifying asphalt in the positively charged ion produced of Wuhan road Xiang highway technology company limited.
Described aqueous epoxy resins is the aqueous epoxy emulsion GEM03 that last sea green good water-borne coatings company limited produces, its characteristic parameter such as table 1.
Table 1
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Epoxy equivalent (weight) | Density (g/ml) |
| The oyster white uniform fluid | 8000-12000 | 50.0-52.0 | 420-470 | 1.06-1.15 |
Described epoxy hardener is the aqueous epoxy curing agent GCA01 that last sea green good water-borne coatings company limited produces, its characteristic parameter such as table 2.
Table 2
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Ahew | Density (g/ml) |
| The yellow transparent thick liquid | 1000－3000 | 50.0-55.0 | 310 | 1.08-1.12 |
Described stablizer is a vinylsiloxane rubber.
Described coarse aggregate is a basalt, nominal maximum aggregate size 9.5mm.
Described fine aggregate is a basalt, nominal maximum aggregate size 4.75mm.
Described filler is a limestone dust, size range be the percent of pass of 0.15mm greater than 90%, the 0.075mm percent of pass is greater than 75%.
The evaporation residue main performance index of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 61%, penetration degree (100g, 25 ℃, 5s) 55.0(0.1mm), 62 ℃ of softening temperatures, ductility (5 ℃) 26.5cm.
Described cement is the P.O42.5 ordinary Portland cement.
The epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
1. be modified emulsifying asphalt by mass ratio: aqueous epoxy resins: epoxy hardener: stablizer=100:5:2:2, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, standby.
2. add modified emulsifying asphalt in container earlier, regulating pH with dilute hydrochloric acid is 5.5, and hand mixing limit, limit adds aqueous epoxy resins, epoxy hardener and stablizer, and it is even to mixed solution to continue hand mixing 1min.Again the high speed shear machine stator is inserted in the middle of the mixed solution, regulate rotating speed (300 rev/mins), open switch and shear 20min, obtain aqueous epoxy resins modified emulsifying asphalt emulsion (annotate: the emulsion storage time of preparation does not surpass 6h).
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:30:15:15:5, choose aqueous epoxy resins modified emulsifying asphalt and cement that coarse aggregate, fine aggregate, filler, step 1) prepare, standby.Coarse aggregate and fine aggregate are stirred 30s in agitator kettle, add aqueous epoxy resins modified emulsifying asphalt restir 90s, add filler again and mix and stir 90s, add cement at last and stir 90s, obtain waterborne epoxy modified emulsified bitulith.
The performance test value of each parameter of the waterborne epoxy modified emulsified bitulith pavement material that above-mentioned preparation method obtains sees Table 9.
Embodiment 2:
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:40:20:16:6, and described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:7:3:4 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
Described modified emulsifying asphalt is that the positively charged ion that Wuhan road Xiang highway technology company limited produces splits modified emulsifying asphalt slowly.
Described aqueous epoxy resins is the aqueous epoxy emulsion GEM03 that last sea green good water-borne coatings company limited produces.
Described epoxy hardener is the aqueous epoxy curing agent GCA02 that last sea green good water-borne coatings company limited produces, its characteristic parameter such as table 3.
Table 3
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Ahew | Density (g/ml) |
| The yellow transparent thick liquid | 5000－8000 | 50.0-55.0 | 320 | 1.08-1.12 |
Described stablizer is a vinylsiloxane rubber.
Described coarse aggregate is a basalt, nominal maximum aggregate size 9.5mm.
Described fine aggregate is a basalt, nominal maximum aggregate size 4.75mm.
Described filler is a limestone dust, size range be the percent of pass of 0.15mm greater than 90%, the 0.075mm percent of pass is greater than 75%.
The evaporation residue main performance index of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 60.8%, penetration degree (100g, 25 ℃, 5s) 52.0(0.1mm), 65 ℃ of softening temperatures, ductility (5 ℃) 24.8cm.
Described cement is the P.O32.5 ordinary Portland cement.
The epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
1. be modified emulsifying asphalt by mass ratio: aqueous epoxy resins: epoxy hardener: stablizer=100:7:3:4, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, standby.
2. add modified emulsifying asphalt in container earlier, regulating pH with dilute hydrochloric acid is 6.0, and hand mixing limit, limit adds aqueous epoxy resins, epoxy hardener and stablizer, and it is even to mixed solution to continue hand mixing 2min.Again the high speed shear machine stator is inserted in the middle of the mixed solution, regulate rotating speed (400 rev/mins), open switch and shear 25min, obtain aqueous epoxy resins modified emulsifying asphalt emulsion (annotate: the emulsion storage time of preparation does not surpass 6h).
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:40:20:16:6, choose aqueous epoxy resins modified emulsifying asphalt and cement that coarse aggregate, fine aggregate, filler, step 1) prepare, and standby; Coarse aggregate and fine aggregate are stirred 60s in agitator kettle, add aqueous epoxy resins modified emulsifying asphalt restir 90s, add filler again and mix and stir 90s, add cement at last and stir 90s, obtain waterborne epoxy modified emulsified bitulith.
The performance test value of each parameter of the waterborne epoxy modified emulsified bitulith pavement material that above-mentioned preparation method obtains sees Table 9.
Embodiment 3:
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:45:20:20:8, and described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:8:4:6 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
Described modified emulsifying asphalt is that the positively charged ion that Wuhan road Xiang highway technology company limited produces splits modified emulsifying asphalt slowly.
Described aqueous epoxy resins is the aqueous epoxy emulsion GEM02 that last sea green good water-borne coatings company limited produces, its characteristic parameter such as table 4.
Table 4
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Epoxy equivalent (weight) | Density (g/ml) |
| The oyster white uniform fluid | 6000-10000 | 47.0-53.0 | 850-1100 | 1.05-1.10 |
Described epoxy hardener is the aqueous epoxy curing agent GCA02 that last sea green good water-borne coatings company limited produces.
Described stablizer is a vinylsiloxane rubber.
Described coarse aggregate is a diabase, nominal maximum aggregate size 9.5mm.
Described fine aggregate is a diabase, nominal maximum aggregate size 4.75mm.
Described filler is a limestone dust, size range be the percent of pass of 0.15mm greater than 90%, the 0.075mm percent of pass is greater than 75%.
The evaporation residue main performance index of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 59.8%, penetration degree (100g, 25 ℃, 5s) 52.5(0.1mm), 59 ℃ of softening temperatures, ductility (5 ℃) 25.5cm.
Described cement is aluminosulfate cement.
The epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
1. be modified emulsifying asphalt by mass ratio: aqueous epoxy resins: epoxy hardener: stablizer=100:8:4:6, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, standby.
2. add modified emulsifying asphalt in container earlier, regulating pH with dilute hydrochloric acid is 6.5, and hand mixing limit, limit adds aqueous epoxy resins, epoxy hardener and stablizer, and it is even to mixed solution to continue hand mixing 3min.Again the high speed shear machine stator is inserted in the middle of the mixed solution, regulate rotating speed (500 rev/mins), open switch and shear 30min, obtain aqueous epoxy resins modified emulsifying asphalt emulsion (annotate: the emulsion storage time of preparation does not surpass 6h).
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:45:20:20:8, choose aqueous epoxy resins modified emulsifying asphalt and cement that coarse aggregate, fine aggregate, filler, step 1) prepare, and standby; Coarse aggregate and fine aggregate are stirred 60s in agitator kettle, add aqueous epoxy resins modified emulsifying asphalt restir 90s, add filler again and mix and stir 90s, add cement at last and stir 90s, obtain waterborne epoxy modified emulsified bitulith.
The performance test value of each parameter of the waterborne epoxy modified emulsified bitulith pavement material that above-mentioned preparation method obtains sees Table 9.
Embodiment 4:
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:50:25:20:9, and described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:10:5:8 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
Described modified emulsifying asphalt is that the positively charged ion that Wuhan road Xiang highway technology company limited produces splits modified emulsifying asphalt slowly.
Described aqueous epoxy resins is the aqueous epoxy emulsion GEM02 that last sea green good water-borne coatings company limited produces.
Described epoxy hardener is the aqueous epoxy curing agent GCA01 that last sea green good water-borne coatings company limited produces.
Described stablizer is the acryl lsothiocyanates.
Described coarse aggregate is a limestone, nominal maximum aggregate size 9.5mm.
Described fine aggregate is a limestone, nominal maximum aggregate size 4.75mm.
Described filler is a limestone dust, size range be the percent of pass of 0.15mm greater than 90%, the 0.075mm percent of pass is greater than 75%.
The evaporation residue main performance index of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 61.3%, penetration degree (100g, 25 ℃, 5s) 57.5(0.1mm), 65.4 ℃ of softening temperatures, ductility (5 ℃) 26.8cm.
Described cement is aluminosulfate cement.
The epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
1. be modified emulsifying asphalt by mass ratio: aqueous epoxy resins: epoxy hardener: stablizer=100:10:5:8, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, standby.
2. add modified emulsifying asphalt in container earlier, regulating pH with dilute hydrochloric acid is 6.5, and hand mixing limit, limit adds aqueous epoxy resins, epoxy hardener and stablizer, and it is even to mixed solution to continue hand mixing 3min.The high speed shear machine stator is inserted in the middle of the mixed solution again, regulate rotating speed (500 rev/mins), open switch and shear, approximately 40min obtains aqueous epoxy resins modified emulsifying asphalt emulsion (annotate: the emulsion storage time of preparation does not surpass 6h).
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:50:25:20:9, choose aqueous epoxy resins modified emulsifying asphalt and cement that coarse aggregate, fine aggregate, filler, step 1) prepare, and standby; Coarse aggregate and fine aggregate are stirred 60s in agitator kettle, add aqueous epoxy resins modified emulsifying asphalt restir 90s, add filler again and mix and stir 90s, add cement at last and stir 90s, obtain waterborne epoxy modified emulsified bitulith.
The performance test value of each parameter of the waterborne epoxy modified emulsified bitulith pavement material that above-mentioned preparation method obtains sees Table 9.
Embodiment 5
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:50:25:20:9, and described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:10:5:8 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
Described modified emulsifying asphalt is to split modified emulsifying asphalt in the positively charged ion produced of Wuhan road Xiang highway technology company limited.
Described aqueous epoxy resins is that Zhejiang Anbang New Material Development Co., Ltd. produces AB-EP-51 aqueous epoxy resins, its characteristic parameter such as table 5.
Table 5
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Epoxy equivalent (weight) | Density (g/ml) |
| The oyster white uniform fluid | 4500-8000 | 48.0-52.0 | 420-460 | 1.02-1.08 |
Described epoxy hardener is that Zhejiang Anbang New Material Development Co., Ltd. produces AB-HGA aqueous epoxy curing agent, its characteristic parameter such as table 6.
Table 6
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Ahew | Density (g/ml) |
| The light brown uniform fluid | 1000－3000 | 48.0-52.0 | 240-300 | 1.04-1.10 |
Described stablizer is a thionamic acid sodium.
Described coarse aggregate is a limestone, nominal maximum aggregate size 9.5mm.
Described fine aggregate is a limestone, nominal maximum aggregate size 4.75mm.
Described filler is a limestone dust, size range be the percent of pass of 0.15mm greater than 90%, the 0.075mm percent of pass is greater than 75%.
The evaporation residue main performance index of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 60.5%, penetration degree (100g, 25 ℃, 5s) 55.4(0.1mm), 62.8 ℃ of softening temperatures, ductility (5 ℃) 26.5cm.
Described cement is the P.O42.5 ordinary Portland cement.
The epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
1. be modified emulsifying asphalt by mass ratio: aqueous epoxy resins: epoxy hardener: stablizer=100:10:5:8, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, standby.
2. add modified emulsifying asphalt in container earlier, regulating pH with dilute hydrochloric acid is 6.5, and hand mixing limit, limit adds aqueous epoxy resins, epoxy hardener and stablizer, and it is even to mixed solution to continue hand mixing 3min.Again the high speed shear machine stator is inserted in the middle of the mixed solution, regulate rotating speed (500 rev/mins), open switch and shear 40min, obtain aqueous epoxy resins modified emulsifying asphalt emulsion (annotate: the emulsion storage time of preparation does not surpass 6h).
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:50:25:20:9, choose aqueous epoxy resins modified emulsifying asphalt and cement that coarse aggregate, fine aggregate, filler, step 1) prepare, and standby; Coarse aggregate and fine aggregate are stirred 60s in agitator kettle, add aqueous epoxy resins modified emulsifying asphalt restir 90s, add filler again and mix and stir 90s, add cement at last and stir 90s, obtain waterborne epoxy modified emulsified bitulith.
The performance test value of each parameter of the waterborne epoxy modified emulsified bitulith pavement material that above-mentioned preparation method obtains sees Table 9.
Embodiment 6
The epoxide modified emulsified bitulith of a kind of steel bridge face use, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:50:25:20:9, and described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:10:5:8 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
Described modified emulsifying asphalt is to split modified emulsifying asphalt in the positively charged ion produced of Wuhan road Xiang highway technology company limited.
Described aqueous epoxy resins is that Zhejiang Anbang New Material Development Co., Ltd. produces AB-EP-44 aqueous epoxy resins, its characteristic parameter such as table 7.
Table 7
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Epoxy equivalent (weight) | Density (g/ml) |
| The oyster white uniform fluid | 4500-8000 | 48.0-52.0 | 410-470 | 1.02-1.08 |
Described epoxy hardener is that Zhejiang Anbang New Material Development Co., Ltd. produces AB-HGT aqueous epoxy resin curing agent, its characteristic parameter such as table 8.
Table 8
| Outward appearance | Viscosity (25 ℃/mPa.S) | Active constituent content/% | Ahew | Density (g/ml) |
| Orange red uniform fluid | 100－2000 | 48.0-52.0 | 240-300 | 1.06-1.10 |
Described stablizer is a thionamic acid sodium.
Described coarse aggregate is a basalt, nominal maximum aggregate size 9.5mm.
Described fine aggregate is a basalt, nominal maximum aggregate size 4.75mm.
Described filler is a limestone dust, size range be the percent of pass of 0.15mm greater than 90%, the 0.075mm percent of pass is greater than 75%.
The evaporation residue main performance index of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 60.3%, penetration degree (100g, 25 ℃, 5s) 55.0(0.1mm), 62 ℃ of softening temperatures, ductility (5 ℃) 26.8cm.
Described cement is the P.O42.5 ordinary Portland cement.
The epoxide modified emulsified bitulith of above-mentioned steel bridge face use, it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
1. be modified emulsifying asphalt by mass ratio: aqueous epoxy resins: epoxy hardener: stablizer=100:10:5:8, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, standby.
2. add modified emulsifying asphalt in container earlier, regulating pH with dilute hydrochloric acid is 6.5, and hand mixing limit, limit adds aqueous epoxy resins, epoxy hardener and stablizer, and it is even to mixed solution to continue hand mixing 3min.The high speed shear machine stator is inserted in the middle of the mixed solution again, regulate rotating speed (500 rev/mins), open switch and shear, approximately 40min obtains aqueous epoxy resins modified emulsifying asphalt emulsion (annotate: the emulsion storage time of preparation does not surpass 6h).
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:50:25:20:9, choose aqueous epoxy resins modified emulsifying asphalt and cement that coarse aggregate, fine aggregate, filler, step 1) prepare, and standby; Coarse aggregate and fine aggregate are stirred 60s in agitator kettle, add aqueous epoxy resins modified emulsifying asphalt restir 90s, add filler again and mix and stir 90s, add cement at last and stir 90s, obtain waterborne epoxy modified emulsified bitulith.
The performance test value of each parameter of the waterborne epoxy modified emulsified bitulith pavement material that above-mentioned preparation method obtains sees Table 9.
The performance test of each parameter of embodiment 1 to embodiment 6 preparation-obtained waterborne epoxy modified emulsified bitulith pavement material is with reference to following standard, and parameter value sees Table 9:
1. with steel plate interface bonding shear test: GB/T 7124-1986 " tackiness agent tensile shear strength measuring method ";
2. thimble test is tested dynamic stability: " highway engineering pitch and asphalt testing regulation " JTJ 052-2000(T 0719-1993);
3. water stability can be tested, test immersion Marshall residual stability and freeze thawing cleavage strength ratio: " highway engineering pitch and asphalt testing regulation " JTJ 052-2000(T 0715-1993);
4. low-temperature bending test is tested-10 ℃ of limit flexural strains: highway engineering pitch and asphalt testing regulation " (T 0715-1993);
5. fatigue test: sample dimensions: 4cm * 4cm * 36cm; Loading regime: apart from 30cm, apart from 10cm, trisection point loads between load(ing) point between the fulcrum; Control method: sinusoidal wave strain level control, stress level is 400 * 10
-6Week velocity of wave: 10Hz; Test temperature: 15 ℃;
6. slip resistance: adopt the uniaxial penetration test at Tongji University Bi Yu peak, test conditions: 1. sample moulding: Φ 100mm * 100mm; 2. test temperature: 60 ℃, insulation 6h; 3. loading rate: 1mm/min.
Table 9
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Bonding shear strength (MPa) | 1.05 | 1.27 | 1.12 | 1.29 | 1.14 | 1.20 |
| Dynamic stability (inferior/mm) | >8000 | >8000 | >8000 | >8000 | >8000 | >8000 |
| Immersion Marshall residual stability | 94.3% | 93.8% | 95.0% | 94.5% | 93.5% | 94.0% |
| Freeze thawing cleavage strength ratio | 91.5% | 92.7% | 93.4% | 92.9% | 92.0% | 90.5% |
| Flexural strain (μ ξ) | 2668 | 2539 | 2645 | 2614 | 2510 | 2578 |
| Times of fatigue (inferior) | 8×10 5 | 8×10 5 | 9×10 5 | 8×10 5 | 7×10 5 | 9×10 5 |
| Slip resistance (MPa) | 1.58 | 1.46 | 1.58 | 1.45 | 1.35 | 1.43 |
The bound of each raw material that the present invention is cited, interval value, and bound, the interval value of processing parameter (as time, rotating speed, pH etc.) can both realize the present invention, do not enumerate embodiment one by one at this.
Claims (10)
1. epoxide modified emulsified bitulith of steel bridge face use, it is characterized in that, it mainly by coarse aggregate, fine aggregate, filler, aqueous epoxy resins modified emulsifying asphalt, and cement form, the mass ratio of each raw material is 100:30～50:15～25:15～20:5～9; Described aqueous epoxy resins modified emulsifying asphalt mainly is the modified emulsifying asphalt of 100:5～10:2～5:2～8 by mass ratio: aqueous epoxy resins: epoxy hardener: the stablizer feedstock production forms.
2. the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1 is characterized in that: described modified emulsifying asphalt is to split modified emulsifying asphalt in the positively charged ion or positively charged ion splits modified emulsifying asphalt slowly.
3. the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1 is characterized in that: described aqueous epoxy resins is aqueous epoxy emulsion GEM03, aqueous epoxy emulsion GEM02, AB-EP-51 aqueous epoxy resins or AB-EP-44 aqueous epoxy resins.
4. the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1 is characterized in that: described epoxy hardener is aqueous epoxy curing agent GCA01, aqueous epoxy curing agent GCA02, AB-HGA aqueous epoxy curing agent or AB-HGT aqueous epoxy resin curing agent.
5. the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1 is characterized in that: described stablizer is vinylsiloxane rubber, acryl lsothiocyanates or thionamic acid sodium.
6. the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1, it is characterized in that: the index of the evaporation residue of described aqueous epoxy resins modified emulsifying asphalt is: residuals content 59～62%, penetration degree 52～58,59～66 ℃ of softening temperatures, the ductility 24～27cm under 5 ℃.
7. the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1, it is characterized in that: described coarse aggregate is basalt, diabase or limestone, 9.5 millimeters of nominal maximum aggregate sizes; Described fine aggregate is basalt, diabase or limestone, 4.75 millimeters of nominal maximum aggregate sizes.
8. the preparation method of the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 1 is characterized in that it may further comprise the steps:
1) preparation of aqueous epoxy resins modified emulsifying asphalt:
By mass ratio is modified emulsifying asphalt: aqueous epoxy resins: epoxy hardener: stablizer :=100:5～10:2～5:2～8, choose modified emulsifying asphalt, aqueous epoxy resins, epoxy hardener and stablizer, and standby;
Add earlier modified emulsifying asphalt in container, regulating pH is 5.5～6.5, adds aqueous epoxy resins, epoxy hardener and stablizer while stirring, and it is even to continue stirring until mixed solution, shears again, obtains aqueous epoxy resins modified emulsifying asphalt emulsion;
2) preparation of waterborne epoxy modified emulsified bitulith:
By mass ratio is coarse aggregate: fine aggregate: filler: aqueous epoxy resins modified emulsifying asphalt: cement=100:30～50:15～25:15～20:5～9, choose coarse aggregate, fine aggregate, filler, the above-mentioned aqueous epoxy resins modified emulsifying asphalt for preparing, reach cement, standby;
Coarse aggregate and fine aggregate are stirred in container, and restir behind the interpolation aqueous epoxy resins modified emulsifying asphalt adds filler again and mixes and stirs, and adds cement at last and stirs, and obtains waterborne epoxy modified emulsified bitulith.
9. the preparation method of the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 8, it is characterized in that, coarse aggregate and fine aggregate were stirred in container 30～60 seconds, added behind the waterborne epoxy modified emulsified bitumen restir 60～90 seconds, adding filler again mixed and stirred 60～90 seconds, add cement at last and stirred 60～90 seconds, obtain waterborne epoxy modified emulsified bitulith.
10. the preparation method of the epoxide modified emulsified bitulith of steel bridge face use as claimed in claim 8, it is characterized in that, using dilute hydrochloric acid to regulate pH is 5.5～6.5, and shear time is 20～40 minutes, and the rotating speed of shears stator is 300-500 rev/min during shearing.
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| CN102173663B (en) | 2013-06-12 |
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