CN110342854A - A kind of porous mixture of concrete bridge deck pavement polyurethane rubber and its preparation - Google Patents
A kind of porous mixture of concrete bridge deck pavement polyurethane rubber and its preparation Download PDFInfo
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- CN110342854A CN110342854A CN201910629418.1A CN201910629418A CN110342854A CN 110342854 A CN110342854 A CN 110342854A CN 201910629418 A CN201910629418 A CN 201910629418A CN 110342854 A CN110342854 A CN 110342854A
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- 239000000203 mixture Substances 0.000 title claims abstract description 78
- 229920003225 polyurethane elastomer Polymers 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000004814 polyurethane Substances 0.000 claims abstract description 36
- 229920002635 polyurethane Polymers 0.000 claims abstract description 35
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 32
- 239000011707 mineral Substances 0.000 claims abstract description 32
- 229920001971 elastomer Polymers 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 17
- 235000019738 Limestone Nutrition 0.000 claims description 16
- 239000006028 limestone Substances 0.000 claims description 16
- 239000004575 stone Substances 0.000 claims description 16
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- 239000003431 cross linking reagent Substances 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000010920 waste tyre Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 2
- 239000010426 asphalt Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 238000000465 moulding Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000005056 compaction Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009490 roller compaction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/16—Polyurethanes
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
- C04B38/0041—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter the particulate matter having preselected particle sizes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of porous mixture of concrete bridge deck pavement polyurethane rubber and its preparation, mixture includes the component of following parts by weight: 100 parts of mineral aggregate, 0~3 part of miberal powder, 4~15 parts of polyurethane cementing agent, 3~15 parts of rubber grain.Compared with prior art, inner opening hole of the present invention is more, has excellent drainage performance, avoids bridge floor from generating Moisture Damage or water drift phenomenon, improves bridge floor skid resistance and travel safety.The porous mixture intensity of polyurethane rubber is high simultaneously, density is smaller, can reduce bridge dead load.In addition, work progress of the present invention is to construct at room temperature, using waste and old rubber particle as aggregate, accelerate the effective use of waste old, meets and build green road new concept at present.
Description
Technical field
The invention belongs to bridge deck pavement material technical fields, and it is porous to be related to a kind of concrete bridge deck pavement polyurethane rubber
Mixture and its preparation.
Background technique
Principal element one of of the Moisture Damage as concrete-bridge disease, rainwater infiltration to bridge inside or bridge deck pavement
Between bridge structure, ponding easy to form, permanent ponding can penetrate further into Corrosion Reinforcement in concrete, give bridge knot
It is configured to endanger.Meanwhile bridge floor ponding is excessively easy to produce water drift phenomenon, influences traffic safety.Therefore how quickly by bridge floor
Water is drained as the research hotspot in deck paving.Dewatering and noise reduction concrete bridge deck pavement layer, which has, reduces rapidly deck paving table
The water film thickness in face improves the safety of rainy day driving；And porous absorption running automobile tire air-flow, significantly reduce noise
Excellent performance.Needed due to the functional requirements of draining, when porous asphalt mixture design by increase coarse aggregate content, avoid or
Fine aggregate dosage is reduced, the mode for forming matrix type embedded squeezing structure achievees the purpose that big gap.But this structure inner frictional resistance compared with
Greatly, cohesion is smaller, such as to obtain larger intensity and anti-external world ability, the adhesive property of cementitious matter is with regard to particularly important.
Flexibly due to its formula, properties of product are excellent and various informative, have good mechanical strength, anti-oxidant for polyurethane
Property, chemical-resistant stability and the advantages that high resiliency, be expected to be applied in deck paving as new pavement material.Meanwhile it is waste and old
Rubber grain has many advantages, such as high resiliency and high tenacity, and waste rubber grain is utilized in deck paving engineering, can not only be improved
Pavement Performance reduces mixture density, reduces the effect of bridge constant load, and can turn waste into wealth, and meets country's promotion
The new concept of environmentally protective highway construction.Using polyurethane as cementing agent, it is more that rubber grain is incorporated into preparation in mixture
The research of hole bridge deck pavement material is less.
Chinese patent CN105777179A discloses a kind of macrovoid polyurethane macadam-aggregate mix and preparation method thereof.This is mixed
It closes and expects that gap is larger, water permeability is preferable, can be avoided vehicle driving phenomena such as generating sliding on road surface and rainwater splashes, changes
Become the acoustic impedance of pavement structure, absorb vehicle noise, reduces noise pollution.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of concrete bridge decks to spread
The dress porous mixture of polyurethane rubber and its preparation.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of porous mixture of concrete bridge deck pavement polyurethane rubber, the component including following parts by weight: mineral
Gather materials 100 parts, 0~3 part of miberal powder, 4~15 parts of polyurethane cementing agent, 3~15 parts of rubber grain.
Further, the mineral aggregate include partial size 10-15mm basaltic broken stone gather materials, the Black Warrior of partial size 5-10mm
Rock gravel aggregate, the limestone gravel that the limestone gravel of partial size 3-5mm gathers materials with partial size less than 3mm gather materials.Four kinds gather materials
Mass ratio is for (10~30): (40~70): (0~15): (5~15).
Further, the polyurethane cementing agent be bi-component curing system, by as component A curing agent and conduct
The modification MDI performed polymer of B component mixes and stirs at room temperature.
Further, the curing agent is the mixture including crosslinking agent, catalyst and plasticizer；
The modified MDI performed polymer meets the following conditions: room temperature viscosity<2000mPas, and tensile strength of material after solidification>
15MPa, tension fracture elongation rate > 60%.
Further, the partial size of the rubber grain is 3-5mm.
Further, the rubber grain is waste tire rubber.
It further, is open mix, voidage is 15~25%.
A kind of preparation method of the porous mixture of concrete bridge deck pavement polyurethane rubber, comprising the following steps:
(1) it takes in polyurethane cementing agent incorporation mineral aggregate, mixes and stirs, obtain polyurethane mixture；
(2) rubber grain and miberal powder are mixed into polyurethane mixture again, is mixed and stirred to get purpose product is arrived.
Further, after the completion of concrete bridge deck pavement is mixed and stirred with the porous mixture of polyurethane rubber, until molding institute's used time
Between be no more than 2h.
Four kinds of partial size mineral aggregates primarily serve skeleton and filling effect in the present invention, and mixture is made to have bearing capacity；
Miberal powder primarily serves filling effect, increases contact surface between gathering materials；Polyurethane cementing agent plays cementation, and it is high to assign mixture
Intensity and high-temperature stability；Rubber grain can be improved the toughness and high resiliency of mixture, while reduce the bulk volume of mixture
Density.
In the present invention volume of each component mainly for guarantee mixture voidage, intensity, toughness and antiskid performance.Such as
10-15mm and 5-10mm partial size aggregate component volume is too low, and the voidage of mixture is smaller, cannot form skeleton gap structure,
Drainage performance reduces；Polyurethane volume is too low, and the mechanical strength of mixture can reduce, and volume is excessively high, also influences whether mixture
Voidage；Rubber grain is mainly the flexibility for improving mixture, the excessively high compacting for influencing mixture of volume；Polyurethane
With the low-temperature cracking-resistance of rubber grain joint effect mixture.
Compared with prior art, the present invention, which forms the porous mixture of polyurethane rubber, has significant draining, noise reduction and good
Good antiskid performance.In rainy day surface layer rapid draing, phenomena such as effectively reducing water drift, water mist, increase rainy day driving safety.With poly-
Urethane is cementing agent, is constructed at room temperature, less energy intensive, and mixture high-temperature behavior, water stabilizing are preferable.Mix a certain amount of rubber
Particle makes it have good flexibility and crack resistance at low-temperature, while can also improve the effective use of waste old.
Detailed description of the invention
Fig. 1 is the porous mixture preparation flow figure of polyurethane rubber.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
In following embodiment, polyurethane A, B component are purchased from BASF Polyurethane Special Products (China) Co., Ltd；
Rubber grain is then purchased from the normal Industrial Co., Ltd. of hamming.
The porous mixture preparation flow of polyurethane rubber of the present invention is as shown in Figure 1.Specific steps are as follows: 1) different-grain diameter is broken
Stone gathers materials according to a certain ratio uniform mixing at room temperature, is uniformly mixed and gathers materials；2) by two-component modified polyurethane component A
120s is mixed and stirred at room temperature with B component, obtains polyurethane cementing agent；3) polyurethane cementing agent is incorporated into uniformly gathering materials and is mixed and stirred
60s obtains polyurethane mixture；4) finally partial size is incorporated into polyurethane mixture and is mixed for 3~5mm rubber grain and miberal powder
And 90s, after roller-compaction, conserves, be prepared porous suitable for concrete bridge deck pavement polyurethane rubber by 48h room temperature
Mixture.
Embodiment 1:
According to the porous mixture embodiment 1 of polyurethane rubber provided by the invention, contain the following substances and each quality of material
Part, it is as shown in table 1 below:
Table 1
| Raw material | Mineral aggregate | Polyurethane cementing agent | Miberal powder | 3-5mm rubber grain |
| Mass parts | 100 | 10 | 1 | 15 |
Mineral aggregate is that partial size 10-15mm basaltic broken stone gathers materials, partial size 5-10mm basaltic broken stone gathers materials, partial size 3-
5mm limestone gravel gathers materials, partial size 0-3mm limestone gravel gathers materials, and it is open gradation, four kinds of matter of gathering materials that mineral aggregate, which forms gradation,
The ratio between amount number is respectively as follows: 20:65:0:15, and each partial size mineral aggregate meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) performance requirement.
The preparation method of the porous mixture of this example polyurethane rubber, process process with reference to shown in Fig. 1, by what is prepared
The porous mixture of polyurethane rubber compaction moulding at room temperature is tested for the property after conserving 48h.With reference to " highway engineering
Pitch and Asphalt Mixture Experiment regulation " (E20-2011 JTG) test its pavement performance, specifically include that volume is joined
Number (voidage), mechanical strength (Marshall stability), endurance quality (dispersing, dynamic stability, residual stability), functionality
(construction depth, antiskid performance, drainage performance).
Embodiment 2
According to the porous mixture embodiment 2 of polyurethane rubber provided by the invention, contain the following substances and each quality of material
Part, it is as shown in table 2 below:
Table 2
| Raw material | Mineral aggregate | Polyurethane cementing agent | Miberal powder | 3-5mm rubber grain |
| Mass parts | 100 | 8 | 2 | 5 |
Mineral aggregate is that partial size 10-15mm basaltic broken stone gathers materials, partial size 5-10mm basaltic broken stone gathers materials, partial size 3-
5mm limestone gravel gathers materials, partial size 0-3mm limestone gravel gathers materials, and it is open gradation, four kinds of matter of gathering materials that mineral aggregate, which forms gradation,
Measuring the ratio between number is respectively 10:70:10:10, and each partial size mineral aggregate meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) performance requirement.
The preparation method of the porous mixture of this example polyurethane rubber, process process with reference to shown in Fig. 1, by what is prepared
The porous mixture of polyurethane rubber compaction moulding at room temperature is tested for the property after conserving 48h.With reference to " highway engineering
Pitch and Asphalt Mixture Experiment regulation " (E20-2011 JTG) test its pavement performance, specifically include that volume is joined
Number (voidage), mechanical strength (Marshall stability), endurance quality (dispersing, dynamic stability, residual stability), functionality
(construction depth, antiskid performance, drainage performance).
Embodiment 3
According to the porous mixture embodiment 3 of polyurethane rubber provided by the invention, contain the following substances and each quality of material
Part, it is as shown in table 3 below:
Table 3
| Raw material | Mineral aggregate | Polyurethane cementing agent | Miberal powder | 3-5mm rubber grain |
| Mass parts | 100 | 6 | 1 | 10 |
Mineral aggregate is that partial size 10-15mm basaltic broken stone gathers materials, partial size 5-10mm basaltic broken stone gathers materials, partial size 3-
5mm limestone gravel gathers materials, partial size 0-3mm limestone gravel gathers materials, and it is open gradation, four kinds of matter of gathering materials that mineral aggregate, which forms gradation,
The ratio between amount number is respectively as follows: 30:50:5:15, and each partial size mineral aggregate meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) performance requirement.
The preparation method of the porous mixture of this example polyurethane rubber, process process with reference to shown in Fig. 1, by what is prepared
The porous mixture of polyurethane rubber compaction moulding at room temperature is tested for the property after conserving 48h.With reference to " highway engineering
Pitch and Asphalt Mixture Experiment regulation " (E20-2011 JTG) test its pavement performance, specifically include that volume is joined
Number (voidage), mechanical strength (Marshall stability), endurance quality (dispersing, dynamic stability, residual stability), functionality
(construction depth, antiskid performance, drainage performance).
Embodiment 4
According to the porous mixture embodiment 4 of polyurethane rubber provided by the invention, contain the following substances and each quality of material
Part, it is as shown in table 4 below:
Table 4
| Raw material | Mineral aggregate | Polyurethane cementing agent | Miberal powder | 3-5mm rubber grain |
| Mass parts | 100 | 12 | 2 | 8 |
Mineral aggregate is that partial size 10-15mm basaltic broken stone gathers materials, partial size 5-10mm basaltic broken stone gathers materials, partial size 3-
5mm limestone gravel gathers materials, partial size 0-3mm limestone gravel gathers materials, and it is open gradation, four kinds of matter of gathering materials that mineral aggregate, which forms gradation,
The ratio between amount number is respectively as follows: 15:60:12:13, and each partial size mineral aggregate meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) performance requirement.
The preparation method of the porous mixture of this example polyurethane rubber, process process with reference to shown in Fig. 1, by what is prepared
The porous mixture of polyurethane rubber compaction moulding at room temperature is tested for the property after conserving 48h.With reference to " highway engineering
Pitch and Asphalt Mixture Experiment regulation " (E20-2011 JTG) test its pavement performance, specifically include that volume is joined
Number (voidage), mechanical strength (Marshall stability), endurance quality (dispersing, dynamic stability, residual stability), functionality
(construction depth, antiskid performance, drainage performance).
Embodiment 5
According to the porous mixture embodiment 5 of polyurethane rubber provided by the invention, contain the following substances and each quality of material
Part, it is as shown in table 5 below:
Table 5
| Raw material | Mineral aggregate | Polyurethane cementing agent | Miberal powder | 3-5mm rubber grain |
| Mass parts | 100 | 4 | 3 | 5 |
Mineral aggregate is that partial size 10-15mm basaltic broken stone gathers materials, partial size 5-10mm basaltic broken stone gathers materials, partial size 3-
5mm limestone gravel gathers materials, partial size 0-3mm limestone gravel gathers materials, and it is open gradation, four kinds of matter of gathering materials that mineral aggregate, which forms gradation,
The ratio between amount number is respectively as follows: 25:55:15:5, and each partial size mineral aggregate meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) performance requirement.
The preparation method of the porous mixture of this example polyurethane rubber, process process with reference to shown in Fig. 1, by what is prepared
The porous mixture of polyurethane rubber compaction moulding at room temperature is tested for the property after conserving 48h.With reference to " highway engineering
Pitch and Asphalt Mixture Experiment regulation " (E20-2011 JTG) test its pavement performance, specifically include that volume is joined
Number (voidage), mechanical strength (Marshall stability), endurance quality (dispersing, dynamic stability, residual stability), functionality
(construction depth, antiskid performance, drainage performance).
Embodiment 6
According to the porous mixture embodiment 6 of polyurethane rubber provided by the invention, contain the following substances and each quality of material
Part, it is as shown in table 6 below:
Table 6
| Raw material | Mineral aggregate | Polyurethane cementing agent | Miberal powder | 3-5mm rubber grain |
| Mass parts | 100 | 15 | 3 | 3 |
Mineral aggregate is that partial size 10-15mm basaltic broken stone gathers materials, partial size 5-10mm basaltic broken stone gathers materials, partial size 3-
5mm limestone gravel gathers materials, partial size 0-3mm limestone gravel gathers materials, and it is open gradation, four kinds of matter of gathering materials that mineral aggregate, which forms gradation,
The ratio between amount number is respectively as follows: 30:45:15:10, and each partial size mineral aggregate meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) performance requirement.
The preparation method of the porous mixture of this example polyurethane rubber, process process with reference to shown in Fig. 1, by what is prepared
The porous mixture of polyurethane rubber compaction moulding at room temperature is tested for the property after conserving 48h.With reference to " highway engineering
Pitch and Asphalt Mixture Experiment regulation " (E20-2011 JTG) test its pavement performance, specifically include that volume is joined
Number (voidage), mechanical strength (Marshall stability), endurance quality (dispersing, dynamic stability, residual stability), functionality
(construction depth, antiskid performance, drainage performance).The performance test results are as shown in the table.
The porous mixture of polyurethane rubber prepared by above-mentioned 6 embodiments, performance test are as shown in table 7 below:
Table 7
Embodiment 7
Compared with Example 1, the overwhelming majority is all identical, and it is 3 mass parts that the present embodiment, which only changes polyurethane cementing agent volume,
Number.
Embodiment 8
Compared with Example 1, the overwhelming majority is all identical, and it is 6 mass parts that the present embodiment, which only changes polyurethane cementing agent volume,
Number.
Embodiment 9
Compared with Example 1, the overwhelming majority is all identical, and it is 12 mass parts that the present embodiment, which only changes polyurethane cementing agent volume,
Number.
Embodiment 10
Compared with Example 1, the overwhelming majority is all identical, and it is 15 mass parts that the present embodiment, which only changes polyurethane cementing agent volume,
Number.
Embodiment 11
Compared with Example 1, the overwhelming majority is all identical, and it is 18 mass parts that the present embodiment, which only changes polyurethane cementing agent volume,
Number.
The porous mixture of polyurethane rubber prepared by above-mentioned 5 embodiments, performance test are as shown in table 8 below:
Table 8
Embodiment 12
Compared with Example 2, the overwhelming majority is all identical, and it is 0 mass parts that the present embodiment, which only changes 3-5mm rubber grain volume,
Number.
Embodiment 13
Compared with Example 2, the overwhelming majority is all identical, and it is 8 mass parts that the present embodiment, which only changes 3-5mm rubber grain volume,
Number.
Embodiment 14
Compared with Example 2, the overwhelming majority is all identical, and it is 12 mass that the present embodiment, which only changes 3-5mm rubber grain volume,
Number.
Embodiment 15
Compared with Example 2, the overwhelming majority is all identical, and it is 15 mass that the present embodiment, which only changes 3-5mm rubber grain volume,
Number.
The porous mixture of polyurethane rubber prepared by above-mentioned 4 embodiments, performance test are as shown in table 9 below:
Table 9
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (9)
1. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber, which is characterized in that including following parts by weight
Component: 100 parts of mineral aggregate, 0~3 part of miberal powder, 4~15 parts of polyurethane cementing agent, 3~15 parts of rubber grain.
2. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 1, which is characterized in that
The mineral aggregate includes that the basaltic broken stone of partial size 10-15mm gathers materials, the basaltic broken stone of partial size 5-10mm gathers materials, partial size 3-
The limestone gravel that the limestone gravel of 5mm gathers materials with partial size less than 3mm gathers materials.Four kinds of mass ratioes to gather materials be for (10~
30): (40~70): (0~15): (5~15).
3. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 1, which is characterized in that
The polyurethane cementing agent is bi-component curing system, pre- by the curing agent as component A and the modification MDI as B component
Aggressiveness mixes and stirs at room temperature.
4. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 3, which is characterized in that
The curing agent is the mixture including crosslinking agent, catalyst and plasticizer；
The modified MDI performed polymer meets the following conditions: room temperature viscosity<2000mPas, and tensile strength of material after solidification>
15MPa, tension fracture elongation rate > 60%.
5. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 1, which is characterized in that
The partial size of the rubber grain is 3-5mm.
6. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 1, which is characterized in that
The rubber grain is waste tire rubber.
7. a kind of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 1, which is characterized in that
It is open mix, and voidage is 15~25%.
8. a kind of preparation side of porous mixture of concrete bridge deck pavement polyurethane rubber as claimed in claim 1
Method, which comprises the following steps:
(1) it takes in polyurethane cementing agent incorporation mineral aggregate, mixes and stirs, obtain polyurethane mixture；
(2) rubber grain and miberal powder are mixed into polyurethane mixture again, is mixed and stirred to get purpose product is arrived.
9. a kind of preparation method of porous mixture of concrete bridge deck pavement polyurethane rubber according to claim 8,
It is characterized in that, not surpassing after the completion of concrete bridge deck pavement is mixed and stirred with the porous mixture of polyurethane rubber until forming the time used
Cross 2h.
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| CN110255972A (en) * | 2019-04-29 | 2019-09-20 | 北京建筑大学 | A method of improving porous polyurethane mixture water stability |
| CN110950589A (en) * | 2019-11-29 | 2020-04-03 | 交通运输部科学研究院 | Stabilizing material for road base layer in strong sulfate saline soil area, road base layer using stabilizing material and construction method |
| CN111733654A (en) * | 2020-07-21 | 2020-10-02 | 交通运输部公路科学研究所 | Assembled porous rubber particle pavement slab and prefabricating method thereof |
| CN113548837A (en) * | 2021-08-09 | 2021-10-26 | 长安大学 | Epoxy-polyurethane composite adhesive, preparation method thereof and colored elastic permeable pavement paving material |
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| CN113548837A (en) * | 2021-08-09 | 2021-10-26 | 长安大学 | Epoxy-polyurethane composite adhesive, preparation method thereof and colored elastic permeable pavement paving material |
| CN116199487A (en) * | 2022-12-26 | 2023-06-02 | 金沙卓为环保新材料有限公司 | Waterproof anti-cracking gypsum block and preparation method thereof |
| CN116283060A (en) * | 2023-02-20 | 2023-06-23 | 山东省交通科学研究院 | Single-component polyurethane rubber sand mixture and preparation method thereof |
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