CN112759327B - Micro-surfacing pavement material and preparation method thereof - Google Patents
Micro-surfacing pavement material and preparation method thereof Download PDFInfo
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- CN112759327B CN112759327B CN202110048929.1A CN202110048929A CN112759327B CN 112759327 B CN112759327 B CN 112759327B CN 202110048929 A CN202110048929 A CN 202110048929A CN 112759327 B CN112759327 B CN 112759327B
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- 239000000463 material Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000002893 slag Substances 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 239000002245 particle Substances 0.000 claims abstract description 46
- 239000010426 asphalt Substances 0.000 claims abstract description 31
- 239000011521 glass Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 19
- 238000009736 wetting Methods 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 claims description 13
- 239000011398 Portland cement Substances 0.000 claims description 11
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 19
- 239000002699 waste material Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 description 11
- 239000011707 mineral Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000003469 silicate cement Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Abstract
The invention relates to a micro-surfacing pavement material and a preparation method thereof. The micro-surfacing pavement material comprises aggregate, emulsified asphalt and water, wherein the mass ratio of the aggregate to the emulsified asphalt to the water is 1: (0.06-0.08): (0.05-0.06); the aggregate comprises the following components in percentage by mass: 30-42% of steel slag coarse aggregate, 42-46% of steel slag fine aggregate, 5-12% of glass aggregate, 1-3% of rubber particle aggregate and 5-7% of filler. The invention also comprises a preparation method of the micro-surfacing pavement material, which comprises the following steps: mixing the steel slag coarse aggregate, the steel slag fine aggregate, the glass aggregate, the rubber particle aggregate and the filler according to the proportion of the components, adding water for wetting, then adding emulsified asphalt for mixing to obtain the micro-surfacing pavement material. The micro-surfacing pavement material has excellent and stable anti-skid and wear-resistant performance, and the BPN value is as high as 81.
Description
Technical Field
The invention relates to the technical field of preventive maintenance of asphalt pavements, in particular to a micro-surfacing pavement material and a preparation method thereof.
Background
In recent 20 years, the development of the expressway in China is very rapid, and the total mileage continuously rises. However, with the coming of the design years of the highway, the repeated loading effect of the automobile and the influence of environmental factors, the damage to the road surface is more and more serious, so that the promotion of highway maintenance measures is extremely important.
At present, the most common pavement maintenance means in China is a micro-surfacing technology, and the technology adopts emulsified asphalt, coarse and fine aggregates, fillers, water and other additives, and can form a thin-layer pavement with certain strength and durability after being prepared at normal temperature. But in the use process of the micro-surfacing pavement material, the noise inside and outside the vehicle is obviously increased compared with the common on-site hot-mix hot-laid asphalt pavement, and the anti-skid performance is insufficient.
Disclosure of Invention
One of the technical problems to be solved by the invention is as follows: how to obtain a stable micro-surfacing pavement material with excellent anti-skid and wear-resistant performances.
The existing micro-surfacing pavement material has the defects of large fine aggregate proportion, small void ratio and small pavement construction depth, so that the noise absorption capacity is poor, the skid resistance is low, and the driving safety and the comfort are influenced.
In order to solve the technical problems, the invention provides a micro-surfacing pavement material and a preparation method thereof.
The invention provides a micro-surfacing pavement material, which comprises aggregate, emulsified asphalt and water, wherein the mass ratio of the aggregate to the emulsified asphalt to the water is 1: (0.06-0.08): (0.05-0.06); the aggregate comprises the following components in percentage by mass: 30-42% of steel slag coarse aggregate, 42-46% of steel slag fine aggregate, 5-12% of glass aggregate, 1-3% of rubber particle aggregate and 5-7% of filler.
Furthermore, the grain size of the steel slag coarse aggregate is 2.37-9.5 mm.
Further, the grain size of the steel slag fine aggregate is 0-2.36 mm.
Furthermore, the particle size of the glass aggregate is 2.36-4.75 mm.
Further, the particle size of the rubber particle aggregate is 0-2.36 mm.
Furthermore, the filler is limestone mineral powder and portland cement.
Furthermore, the particle size of the filler is 0-0.075 mm.
Further, the emulsified asphalt is SBR modified emulsified asphalt.
The invention also provides a preparation method of the micro-surfacing pavement material, which comprises the following steps: mixing the steel slag coarse aggregate, the steel slag fine aggregate, the glass aggregate, the rubber particle aggregate and the filler according to the mixture ratio of the components, adding the water-wet material system, and then adding the emulsified asphalt for mixing to prepare the micro-surfacing pavement material.
Compared with the prior art, the invention has the advantages that: according to the mass percentage, 30-42% of steel slag coarse aggregate, 42-46% of steel slag fine aggregate, 5-12% of glass aggregate, 1-3% of rubber particle aggregate, 5-7% of filler, 6-8% of emulsified asphalt and 5-6% of water are mixed, the steel slag coarse aggregate is hard and wear-resistant, and a high-wear-resistance and high-strength framework structure is provided for the material. The glass aggregate has rich edges and corners, improves the construction depth of the pavement material at the micro-surfacing and improves the skid resistance. The rubber particle aggregate has certain elasticity, can absorb the heavy impact force, further buffer the pressure of the automobile to the material, prevent the heavy objects such as the automobile from damaging the road surface, and combine other components, so that the micro-surfacing road surface material has excellent and stable anti-skidding wear-resisting property, and the BPN value is as high as 81.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a grading plot of the micro-surfacing pavement materials of examples 1-3.
Detailed Description
The specific embodiment provides a micro-surfacing pavement material, which comprises aggregate, emulsified asphalt and water, wherein the mass ratio of the aggregate to the emulsified asphalt to the water is 1: (0.06-0.08): (0.05-0.06); the aggregate comprises the following components in percentage by mass: 30-42% of steel slag coarse aggregate, 42-46% of steel slag fine aggregate, 5-12% of glass aggregate, 1-3% of rubber particle aggregate and 5-7% of filler. The steel slag coarse aggregate has the particle size of 2.37-9.5 mm, the steel slag fine aggregate has the particle size of 0-2.36mm, the glass aggregate has the particle size of 2.36-4.75mm, the rubber particle aggregate has the particle size of 0-2.36mm, and the filler has the particle size of 0-0.075 mm.
Furthermore, the filler is limestone mineral powder and portland cement; the emulsified asphalt is SBR modified emulsified asphalt; further, the portland cement is p.o42.5 portland cement.
The specific embodiment further comprises a preparation method of the micro-surfacing pavement material, which comprises the following steps: according to the proportion of the components, mixing the steel slag coarse aggregate, the steel slag fine aggregate, the glass aggregate, the rubber particle aggregate and the filler for 30-40 seconds until the mixture is uniform, adding water for mixing for 30-40 seconds until the mixture is wet, and then adding emulsified asphalt for mixing for 30-40 seconds until the mixture is uniform to obtain the micro-surfacing pavement material.
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Example 1
The micro-surfacing pavement material in the implementation comprises aggregate, SBR modified emulsified asphalt and water, wherein the mass ratio of the aggregate to the SBR modified emulsified asphalt to the water is 1: 0.07: 0.06; the aggregate comprises the following components in percentage by mass: 22% of steel slag aggregate with the grain diameter of 4.75-9.5mm, 10% and 13% of waste glass and steel slag aggregate with the grain diameter of 2.36-4.75mm, 46% and 3% of steel slag aggregate and rubber particles with the grain diameter of 0-2.36mm, 4.5% of mineral powder and 1.5% of portland cement.
The preparation method of the micro-surfacing pavement material in the embodiment comprises the following steps: according to the proportion of the components, mixing the steel slag coarse aggregate, the steel slag fine aggregate, the glass aggregate, the rubber particle aggregate and the filler for 30s until the mixture is uniform, adding water for mixing for 34s until the mixture is uniformly wet, and then adding the SBR modified emulsified asphalt for mixing for 30s until the mixture is uniform to obtain the micro-surfacing pavement material.
Example 2
The difference between the embodiment and the embodiment 1 is only the mass percentage of the aggregate, specifically, the aggregate is calculated by mass percentage, the steel slag aggregate with the particle size of 4.75-9.5mm is 22%, the waste glass and the steel slag aggregate with the particle size of 2.36-4.75mm are 8% and 15%, respectively, the steel slag aggregate and the rubber particle with the particle size of 0-2.36mm are 47% and 2%, the mineral powder is 4.5%, and the silicate cement is 1.5%.
Example 3
The difference between the embodiment and the embodiment 1 is only the mass percentage of the aggregate, specifically, the aggregate is calculated by mass percentage, the steel slag aggregate with the particle size of 4.75-9.5mm is 22%, the waste glass and the steel slag aggregate with the particle size of 2.36-4.75mm are respectively 6% and 17%, the steel slag aggregate with the particle size of 0-2.36mm and the waste rubber particles are respectively 48% and 1%, the mineral powder is 4.5%, and the silicate cement is 1.5%.
Example 4
The embodiment provides a micro-surfacing pavement material, which comprises aggregate, SBR modified emulsified asphalt and water, wherein the mass ratio of the aggregate to the SBR modified emulsified asphalt to the water is 1: 0.06: 0.05; the aggregate comprises the following components in percentage by mass: 22% of steel slag aggregate with the grain diameter of 4.75-9.5mm, 12% and 10% of waste glass and steel slag aggregate with the grain diameter of 2.36-4.75mm, 46% and 3% of steel slag aggregate and waste rubber particles with the grain diameter of 0-2.36mm, 4.5% of mineral powder and 1.5% of portland cement.
The preparation method of the micro-surfacing pavement material in the embodiment comprises the following steps: according to the proportion of the components, mixing steel slag coarse aggregate, steel slag fine aggregate, glass aggregate, rubber particle aggregate and filler for 40s until the mixture is uniform, adding water for mixing for 40s until the mixture is uniformly wet, and then adding SBR modified emulsified asphalt for mixing for 35s until the mixture is uniform to obtain the micro-surfacing pavement material.
Example 5
The embodiment provides a micro-surfacing pavement material, which comprises aggregate, SBR modified emulsified asphalt and water, wherein the mass ratio of the aggregate to the SBR modified emulsified asphalt to the water is 1: 0.08: 0.06; the aggregate comprises the following components in percentage by mass: 23% of steel slag aggregate with the grain diameter of 4.75-9.5mm, 5% and 19% of waste glass and steel slag aggregate with the grain diameter of 2.36-4.75mm, 46% and 2% of steel slag aggregate and waste rubber particles with the grain diameter of 0-2.36mm, 3.5% of mineral powder and 1.5% of portland cement.
The preparation method of the micro-surfacing pavement material in the embodiment comprises the following steps: according to the proportion of the components, mixing the steel slag coarse aggregate, the steel slag fine aggregate, the glass aggregate, the rubber particle aggregate and the filler for 30s until the mixture is uniform, adding water for mixing for 35s until the mixture is uniformly wet, then adding the SBR modified emulsified asphalt for mixing for 40s until the mixture is uniform, and obtaining the micro-surfacing pavement material.
Comparative example 1
The comparative example differs from example 1 only in that the aggregate of the comparative example does not contain waste glass, and specifically, the aggregate has a composition, in mass percent, of: 22 percent of steel slag aggregate with the grain diameter of 4.75-9.5mm, 23 percent of steel slag aggregate with the grain diameter of 2.36-4.75mm, 46 percent and 3 percent of steel slag aggregate with the grain diameter of 0-2.36mm and rubber particles respectively, 4.5 percent of mineral powder and 1.5 percent of portland cement.
Comparative example 2
This comparative example differs from example 1 only in that the aggregate of this comparative example does not contain rubber particles, and specifically, the aggregate has a composition, in weight percent: 22% of steel slag aggregate with the grain diameter of 4.75-9.5mm, 10% and 13% of waste glass and steel slag aggregate with the grain diameter of 2.36-4.75mm, 49% of steel slag aggregate with the grain diameter of 0-2.36mm, 4.5% of mineral powder and 1.5% of portland cement.
Comparative example 3
The comparative example differs from example 1 only in that the aggregate of the comparative example does not contain waste glass and rubber particles, and specifically, the aggregate has a composition, in terms of weight percent, of: 22 percent of steel slag aggregate with the grain diameter of 4.75-9.5mm, 23 percent of steel slag aggregate with the grain diameter of 2.36-4.75mm, 49 percent of steel slag aggregate with the grain diameter of 0-2.36mm, 4.5 percent of mineral powder and 1.5 percent of portland cement.
The grading type of the micro-surfacing pavement materials of the examples 1 to 3 is MS-3 median grading synthesis, the specific grading is shown in the table 1, and the figure 1 is a synthetic grading curve.
TABLE 1 MS-3 type micro-surfacing pavement material composition gradation
| Mesh size | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 | Mixing ratio |
| Upper limit of |
100 | 90 | 70 | 50 | 34 | 25 | 18 | 15 | |
| Lower limit of |
100 | 70 | 45 | 28 | 19 | 12 | 7 | 5 | |
| Median grading of | 100.0 | 80.0 | 57.5 | 39.0 | 26.5 | 18.5 | 12.5 | 10.0 | |
| Aggregate of 4.75-9.5mm | 99.8 | 1.5 | 0.6 | 0.4 | 0.4 | 0.3 | 0.2 | 0.1 | 22.0％ |
| Aggregate of 2.37-4.75 mm | 100.0 | 99.7 | 11.6 | 0.3 | 0.3 | 0.3 | 0.2 | 0.1 | 23.0％ |
| Aggregate of 0-2.36 |
100 | 100 | 99.9 | 65.3 | 35.5 | 22.7 | 13.1 | 6.6 | 49.0％ |
| |
100 | 100 | 100.0 | 100.0 | 100.0 | 99.9 | 99.7 | 85.7 | 4.5％ |
| |
100 | 100 | 100 | 100 | 100 | 100 | 98.1 | 88.3 | 1.5％ |
| Composition grading | 100.0 | 78.2 | 56.9 | 37.8 | 23.8 | 17.8 | 13.2 | 9.2 | 100.0％ |
The micro-surfacing pavement materials of examples 1-5 were prepared according to the "micro-surfacing and slurry seal technical guidelines" specifications for skid-resistant and noise-reducing micro-surfacing pavement materials, and the results of the relevant performance tests are shown in table 2.
TABLE 2 results of Performance test of micro-surfacing pavement materials of examples 1-5 and comparative examples 1-3 and of MS-3 basalt micro-surfacing pavement materials
As can be seen from Table 2, the blending times of examples 1-5 are all greater than specification 120s, indicating that the micro-surfacing pavement material has good workability. Compared with the common basalt micro-surfacing pavement material, the 1h wet wheel abrasion, the rut deformation rate and other parameters are slightly reduced, but the 1h wet wheel abrasion, the rut deformation rate and other parameters meet the standard requirements of micro-surfacing and slurry sealing technical guidelines and meet the basic pavement performance. Examples 1-5 have higher BPN values than the basalt micro-surfacing pavement material, indicating that the skid resistance of the basalt micro-surfacing pavement material is superior to that of the basalt micro-surfacing pavement material in examples 1-5. The BPN value of the comparative example 2 is obviously higher than that of the comparative examples 1 and 3, which shows that the waste glass can obviously improve the anti-skid property of the material; the lower decibel value of the pavement materials at the micro-surface of the basalt in the examples 1 to 5 shows that the doping of the waste rubber particles in the examples 1 to 5 has obvious effect on absorbing noise and has better noise reduction function, while the higher decibel value of the comparative examples 1 to 3, particularly the highest decibel value of the comparative example 3, shows that the effect of absorbing noise of the materials is improved under the matching of the rubber particles, the glass and other components.
Based on the synergistic action principle of different materials, the steel slag coarse aggregate is hard and wear-resistant, and the steel slag is used as the coarse aggregate to provide a high-wear-resistance and high-strength skeleton structure. The waste rubber particles are used as fine aggregates, and have larger elastic potential energy compared with waste rubber powder, and have better effect on noise absorption. The waste glass is used as aggregate, and the abundant edge performance of the waste glass is utilized to improve the structural depth of the micro-surfacing material, so that the anti-skid performance is improved. Furthermore, there is no precedent in the current research of using waste glass as aggregate in micro-surfacing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. The micro-surfacing pavement material is characterized by comprising aggregate, emulsified asphalt and water, wherein the mass ratio of the aggregate to the emulsified asphalt to the water is 1: (0.06-0.08): (0.05-0.06); the aggregate comprises the following components in percentage by mass: 30-42% of steel slag coarse aggregate, 42-46% of steel slag fine aggregate, 5-12% of glass aggregate, 1-3% of rubber particle aggregate and 5-7% of filler; the emulsified asphalt is SBR modified emulsified asphalt.
2. The micro-surfacing pavement material according to claim 1, wherein the steel slag coarse aggregate has a particle size of 2.37-9.5 mm.
3. The micro-surfacing pavement material according to claim 1, wherein the fine aggregate of steel slag has a particle size of 0-2.36 mm.
4. The micro-surfacing pavement material according to claim 1, wherein the glass aggregate has a particle size of 2.36-4.75 mm.
5. The micro-surfacing pavement material according to claim 1, wherein the rubber particle aggregate has a particle size of 0-2.36 mm.
6. The micro-surfacing pavement material according to claim 1, wherein the filler is limestone ore powder and portland cement.
7. The micro-surfacing pavement material according to claim 1, wherein the filler has a particle size of 0-0.075 mm.
8. A method of making a micro-surfacing pavement material according to any of claims 1-7, comprising: mixing the steel slag coarse aggregate, the steel slag fine aggregate, the glass aggregate, the rubber particle aggregate and the filler according to the proportion of the components, adding water for wetting, and then adding emulsified asphalt for mixing to prepare the micro-surfacing pavement material.
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