CN106186922B - Semi rigid bituminous surface material and preparation method thereof - Google Patents
Semi rigid bituminous surface material and preparation method thereof Download PDFInfo
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- CN106186922B CN106186922B CN201610522248.3A CN201610522248A CN106186922B CN 106186922 B CN106186922 B CN 106186922B CN 201610522248 A CN201610522248 A CN 201610522248A CN 106186922 B CN106186922 B CN 106186922B
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- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
-
- 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
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention relates to road engineering material, specifically a kind of Semi rigid bituminous surface material and preparation method thereof.Semi rigid bituminous surface material of the invention, is made of porous asphalt and grouting material, the percent by volume of two kinds of compositions are as follows: porous asphalt 75%-85%, grouting material 15%-25%；The porous asphalt is mixed by mineral aggregate, filler, rubber high adhered modification pitch；The grouting material is mixed by subparticle modified emulsifying asphalt, PC42.5 composite Portland cement, active blend, sand, water, water-reducing agent, aluminium powder, swelling agent, air entraining agent, defoaming agent, limestone mineral powder.Construction workability of the present invention is good, high temperature rutting resistance and low temperature anti-cracking ability are strong, durability and fatigue life are long, porous asphalt and grouting material associativity are good, warm contracting and desciccation crack are small, energy conservation and environmental protection, the high performance-price ratio that solid waste recycles can be achieved.
Description
Technical field
The present invention relates to road engineering material, specifically a kind of Semi rigid bituminous surface material and preparation method thereof.
Background technique
Asphalt concrete pavement belongs to the primary structure form that flexible pavement is China's highway and urban road surfaces,
With road-ability good, surfacing, low noise, antiskid are had excellent performance, mechanization degree is high in construction application simultaneously, apply
The features such as work speed is fast, and later period maintenance maintenance is simple.However, quickling increase recently as the volume of traffic and vehicular load, drips
Green concrete road surface plastic deformation is generated under vehicular load repeated action and there is track, embrace, elapse etc. high-temperature behaviors and
The insufficient defect phenomenon of intensity is got worse, especially heavily loaded resource road, urban road traffic light intersection and evaluate
It is very prominent at mouthful, seriously affect the traffic safety and comfort on road surface.
Cement concrete pavement belongs to rigid pavement, although it is generally existing to efficiently solve asphalt concrete pavement
The various diseases occurred because high-temperature stability and intensity are insufficient, but itself is difficult to the shortcomings that overcoming there is also many, such as
Engineering cost is high, driving comfort level is poor, antiskid performance is low, flexibility is insufficient is also easy to produce crack, expansion joint setting complexity, preserving period
It is long and can not open to traffic, be also easy to produce faulting of slab ends and the destruction of purt mud, maintenance difficult etc..
For overcome asphalt concrete pavement easily to occur generating because high-temperature stability and intensity are insufficient track, embrace and push away
The diseases such as shifting produce Semi rigid bituminous surface, i.e., by macropore using the advantage that the intensity of cement concrete is high, stability is good
The novel pavement material of gap asphalt (precursor mix) and cement-based grouting material (grouting material) compound composition.It is semi-rigid
Bituminous pavement is a kind of high Rut resistance profile material coupled hardness with softness, and does not need setting seam, has been proved to possess high-mechanic
Ability is able to solve the insufficient disease of the high-temperature stabilities such as pavement track.
Both at home and abroad in common Semi rigid bituminous surface material, porous asphalt belongs to flexible material and mainly provides
Low-temperature cracking-resistance and fatigue durability, cement-based grouting material belong to rigid material and mainly provide high temperature rutting resistance and strong
Degree.It was verified that although traditional Semi rigid bituminous surface material performance in terms of high-temperature stability and bearing capacity is brilliant,
Since grouting material therein belongs to cement-based material, a large amount of thermal energy can be discharged in hydration reaction, volume expansion, after curing
Temperature reduces and generates temperature contracting, drying shrinkage, since the temperature contracting of two kinds of materials of cement base and pitch class, coefficient of shrinkage difference are huge, this
Sample is easy for causing to occur between two kinds of materials cohesive force decline, crack occurs, reduce to the greatest extent road surface low-temperature resistance cracking ability,
Durability and fatigue life.In addition, porous asphalt will possess enough, stable gap, can just pour into it is enough and
Closely knit paste materials.However traditional porous asphalt uses polymer modified asphalt as cementitious matter, this is cementing
Material is not only at high cost, and viscosity is big when high temperature, and construction workability is poor, and Energy Consumption of Construction is big.Viscosity is small when low temperature, on the one hand cannot
Enough adhesion strengths are provided for porous asphalt, cause in work progress that Construction traffic and grouting equipment will be inside them
Gap is further compressed, and causes grouting difficult, and grouting leakiness in inside influences road surface overall durability；Another aspect viscosity compared with
When low, wrap up in be attached to stone surface polymer modified asphalt film it is very thin, cause Semi rigid bituminous surface resist cold cracking,
The ability for resisting reflection crack and fatigue cracking substantially reduces.In addition, in order to guarantee that it is enough that Semi rigid bituminous surface has
Mechanical strength and grouting needed for mobility, often add large dosage cement material and mixing water, increase entire construction
The cost and energy consumption of process.
Summary of the invention
For the above technological deficiency existing for existing semi-rigidity bituminous material, the object of the present invention is to provide a kind of construction and
Easy property is good, high temperature rutting resistance and low temperature anti-cracking ability are strong, durability and fatigue life are long, porous asphalt with
Grouting material associativity is good, warm contracting and desciccation crack are small, energy conservation and environmental protection, the high performance-price ratio half that solid waste recycles can be achieved
Rigid asphalt pavement material.
To achieve the above object, The technical solution adopted by the invention is as follows:
Semi rigid bituminous surface material of the invention, is made of porous asphalt and grouting material, two kinds of compositions
Percent by volume are as follows: porous asphalt 75%-85%, grouting material 15%-25%；
The porous asphalt is by mineral aggregate, filler, rubber high adhered modification pitch by accounting for macrovoid pitch as follows and mix
The mass parts ratio for closing material mixes:
Mineral aggregate be 90-95 parts,
Filler be 1-3 parts,
Rubber high adhered modification pitch is 2-5 parts；
The grouting material by subparticle modified emulsifying asphalt, PC42.5 composite Portland cement, active blend, sand,
Water, water-reducing agent, aluminium powder, swelling agent, air entraining agent, defoaming agent, limestone mineral powder are mixed by the mass parts ratio for accounting for grouting material as follows
It forms:
The mixture grading limit of the mineral aggregate and filler is 31.5mm sieve pore by passing through for 100%, 26.5mm sieve pore
Rate be (80-100) %, 19mm sieve pore percent of pass be (60-100) %, 16mm sieve pore percent of pass be (45-90) %, 13.2mm sieve
Hole percent of pass be (30-82) %, 9.5mm sieve pore percent of pass be (16-70) %, 4.75mm sieve pore percent of pass be (2-12) %,
0.075mm sieve pore percent of pass is (1-3) %.
The rubber high adhered modification pitch is by accounting for the 70# of the friendship again pitch of gross mass (70-85) %, accounting for gross mass (10-
25) waste-tyre rubber-powder of %, account for gross mass (4-6) % modified stabilizer composition, gross mass 100%.
The subparticle modified emulsifying asphalt is cationic emulsified bitumen, and evaporated residue content is not less than 60%, grain
Degree is distributed as 1-5 μm；The active blend is by one of flyash, granulated blast-furnace slag, tailing containing lithium, silicon ash or a variety of
Composition；The sand is river sand or Machine-made Sand, fineness modulus 1.4-2.2.
Interconnected pore rate in porous asphalt be greater than 25%, wheel tracking test dynamic stability (60 DEG C,
0.7MPa) it is not less than 6000 times/mm；The grouting material performance indicator meets: grouting material temperature is (5-40) DEG C, fluidity (18-
26) s, working time are not less than 15Mpa, 28 days not less than 3Mpa, 28 days compression strength not less than 30min, 28 days flexural strengths
Elasticity modulus is (7000-10000) Mpa, 28 days relative dynamic elastic modulus are not less than 60%, fatigue resistance (28 days) satisfactions 10000
It is secondary not broken.
The present invention also provides the preparation sides of above-mentioned Semi rigid bituminous surface big pore gap asphalt, grouting material
Method.
The preparation method of the porous asphalt successively the following steps are included:
1) rubber high adhered modification pitch: step A is prepared, is weighed by mass percentage and is accounted for gross mass (70-85) % and be heated to
180 DEG C of the 70# pitch of friendship again；The waste-tyre rubber-powder for accounting for gross mass (10-25) % is added to and holds obtained by step A by step B
It is stirred in the reactor tank of product；The modified stabilizer for accounting for gross mass (4-6) % is added in step B products therefrom by step C
Stirring, and the temperature of reactor tank is risen to 220 DEG C in 1h；Step D is cooled to after step C products therefrom is persistently stirred 3h
170 DEG C obtain finished rubber high adhered modification pitch.
2) it prepares the mixture of mineral aggregate and filler: weighing the 90-95 parts of mineral aggregates for being heated to 190 DEG C, 1-3 parts by mass fraction
It is heated to 190 DEG C of filler, mineral aggregate and filler are launched to 190 DEG C mix and stir and continue constant temperature stirring, the gradation of mixture in pot
The requirement of table 1 should be met.
3) the finished rubber high adhered modification pitch that mass fraction is 2-5 parts is added in the mixture of mineral aggregate and filler and is held
It is continuous to stir 40s to get porous asphalt is arrived.
The preparation method of the grouting material successively the following steps are included:
1) various raw material needed for grouting material, the number of raw material composition and each component are weighed by mass fraction are as follows:
10-25 parts of subparticle modified emulsifying asphalt, 15-25 parts of PC42.5 composite Portland cement, 3-10 parts of active blend, sand
20-30 parts, 5-15 parts of water, 0.2-0.4 parts of water-reducing agent, 0.001-0.006 parts of aluminium powder, 1-3 parts of swelling agent, air entraining agent 0.2-0.4
Part, 0.2-1.5 parts of defoaming agent, 10-25 parts of limestone mineral powder.
2) according to sand, active blend, limestone mineral powder, water, water-reducing agent, aluminium powder, swelling agent, air entraining agent, defoaming agent
Sequence launches various raw material, stirs 1.5min, adding subparticle modified emulsifying asphalt to be stirred for 2-3min i.e. can be made into grouting
Material.
The present invention compared with the existing technology, has the following advantages and beneficial effects:
Rubber high adhered modification pitch is used in macroporosity asphalt, which has high temperature viscosity
Low, construction workability is good, and low energy consumption；Low temperature viscosity is big, and stiffness is high, and comprehensive pavement performance is good, can guarantee macroporosity pitch
Mixture keeps firm voidage level in filling process or construction period, creates advantage for the perfusion of grouting material；
A certain amount of asphalt-based material is used in grouting material, greatly improves conventional cement sill and macrovoid pitch is mixed
The problem for closing the cohesive force difference between material reduces so that the dilatancy of grouting material and porous asphalt reaches unanimity
The appearance in crack provides enough low-temperature resistance crackings, durability and fatigue life for Semi rigid bituminous surface；
A large amount of active fillers as used in grouting material can occur two in the alkaline environment that cement hydration process generates
Secondary hydration reaction, generates the high silicate cement compound of intensity, and the later strength formed is significantly larger than produced using cement merely
Therefore under conditions of grouting material intensity is certain, cement consumption can be greatly lowered in raw intensity, reduce hydration reaction institute
The temperature contracting of generation and drying shrinkage phenomenon, improve the synthesis pavement performance of Semi rigid bituminous surface；
The reduction of the high Energy dissipating material usage amount such as cement, as active blend mineral waste recycle and it is waste and old
The use of tire glue powder, reduces environmental pollution and discharge.
Detailed description of the invention
Specific embodiment
Technical solution of the present invention is described further below with reference to embodiment:
The Semi rigid bituminous surface material of the embodiment of the present invention is made of porous asphalt and grouting material, described big
Interconnected pore rate in hole asphalt is greater than 25%, wheel tracking test dynamic stability (60 DEG C, 0.7MPa) and is not less than 6000
The mass parts ratio that secondary/mm, raw material composition and each component account for raw material total amount is as follows: mineral aggregate is 95 parts, filler is 2.5 parts,
Rubber high adhered modification pitch is 2.5 parts.
Limestone, basalt, granite, diabase etc. can be selected in mineral aggregate, and mineral aggregate performance indicator should meet " highway asphalt road
Surface construction technical specification " (JTGF40-2004) requirement；
Filler can be selected limestone mineral powder or ordinary portland cement, and quality index should meet that " asphalt highway is applied
Work technical specification " (JTGF40-2004) requirement；
The formate gradation composition of mineral aggregate and filler mixture should meet the requirement of table 1；
Table 1
Rubber high adhered modification pitch is by accounting for the 70# pitch of friendship again of gross mass 80%, accounting for the waste and old tyre rubber of gross mass 15%
Powder, the modified stabilizer composition for accounting for gross mass 5%.The heavy drip for handing over 70# pitch to use the production of Jiangsu Zhong Youxingneng pitch factory
Blueness, waste-tyre rubber-powder are Jiaozuo Hongrui Rubber Co., Ltd.'s production, and modified stabilizer is by Jiangsu day promise pavement material
The dedicated modified stabilizer T N-GN100 type of high adhered modification pitch of Science and Technology Ltd.'s production, mineral aggregate and filler are by Changzhou Liyang
The production of Shang Pei building stones factory.
Its performance indicator meets the requirement of table 2；
Table 2
The grouting material technical indicator should meet the requirement of table 3, and raw material composition and each component account for the quality of raw material total amount
Portion rate is as follows: 10.5 parts of subparticle modified emulsifying asphalt, 21 parts of PC42.5 composite Portland cement, 12 parts of tailing containing lithium,
21.918 parts of river sand, 13 parts of water, 0.28 part of water-reducing agent, 0.002 part of aluminium powder, 1.15 parts of swelling agent, 0.25 part of air entraining agent, limestone
20 parts of miberal powder.
Table 3
Subparticle modified emulsifying asphalt is cationic emulsified bitumen, and evaporated residue content is not less than 60%, granularity point
Cloth is 1-5 μm；
Cement is PC42.5 composite Portland cement, and main performance index should meet national standard；
Active blend by one of flyash, granulated blast-furnace slag, tailing containing lithium, silicon ash or it is a variety of form, blend
The technical indicator of material such as table 4；
Table 4
Sand is river sand or Machine-made Sand, and fineness modulus 1.4-2.2, other performance indicators meet TB10210-97 standard；
Water is drinking water, PH >=7；
Water-reducing agent is poly- hydroxy acid water-reducing agent, and main performance should meet the regulation of GB8076；
Aluminium powder is flakey aluminium powder, and main performance should meet the regulation of GB/T2085.1-2007；
Swelling agent is calcium sulphoaluminate class swelling agent, and main performance should meet the regulation of GB23439-2009；
Air entraining agent is alkylated aromatic sulfonic acid class air entraining agent, and main performance meets the regulation of GB8076-2008；
Defoaming agent is organic silicon defoaming agent, and main performance should meet the regulation of GB/T26527-2011；
The performance indicator of limestone dust should meet the rule of " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004)
It is fixed.
Embodiment one
The preparation method of the porous asphalt of the embodiment of the present invention successively the following steps are included:
1) prepared by porous asphalt: step A is weighed by mass percentage and is accounted for gross mass 85% and be heated to 180 DEG C
The 70# pitch of friendship again；The waste-tyre rubber-powder for accounting for gross mass 10% is added to the reaction for holding step A products therefrom by step B
It is stirred in tank；The modified stabilizer for accounting for gross mass 5% is added in step B products therefrom and stirs by C, and will reaction in 1h
The temperature of tank rises to 220 DEG C；Step D after step C products therefrom is persistently stirred 3h, cools to 170 DEG C and obtains finished rubber
High adhered modification pitch, performance indicator are shown in Table 5；Mineral aggregate and filler are heated to 190 DEG C, are stirred 15s, mixture by step E
Formate gradation composition be shown in Table 6；Step F is dripped by the rubber high adhered modification that porous asphalt gross mass percentage is 2.5% is accounted for
Blueness is put into step E products therefrom, and stirs 40s to get large porosity asphalt is arrived, and performance indicator is shown in Table 7.
Table 5
Table 6
Table 7
| Serial number | Detection project | Unit | Testing result | Technical requirements |
| 1 | Connectivity gap rate | % | 25.9 | ≥25 |
| 2 | Dynamic stability (60 DEG C, 0.7MPa) | Secondary/mm | 7210.3 | ≥6000 |
| 3 | Marshall stability | KN | 11.4 | ≥6 |
| 4 | Marshall residual stability | % | 92.6 | ≥80 |
| 5 | Freeze-thaw split intensity ratio | % | 83.7 | ≥80 |
2) grouting material is prepared, grouting material is by subparticle modified emulsifying asphalt, PC42.5 composite Portland cement, tail containing lithium
Mine, river sand, water, water-reducing agent, aluminium powder, swelling agent, air entraining agent, defoaming agent, limestone mineral powder mix, each component mass fraction
Are as follows: 10.5 parts of subparticle modified emulsifying asphalt, 21 parts of PC42.5 composite Portland cement, 12 parts of tailing containing lithium, river sand
21.918 parts, 13 parts of water, 0.28 part of water-reducing agent, 0.002 part of aluminium powder, 1.15 parts of swelling agent, 0.25 part of air entraining agent, limestone mineral powder
20 parts.
The subparticle modified emulsifying asphalt is produced by Jiangsu Tian Nuo pavement material Science and Technology Ltd., and technical indicator is shown in
Table 8；
The PC42.5 composite Portland cement uses " Ji east board " cement, and technical indicator meets national standard；
The tailing containing lithium is adopted to be produced by Tian Qili industry limited liability company, and performance indicator is shown in Table 9；
Table 9
The river sand is the production of Changzhou Liyang Shang Pei building stones factory, fineness modulus 1.8, other performance indicators satisfaction
TB10210-97 standard requirements；
The water is Zhengjiang City huge port tap water, PH 7.2；
The water-reducing agent uses the polycarboxylic acid series high efficiency water reducing agent JM-PCA of Jiangsu Botexin Materials Co., Ltd's production
(I)-A, main performance meet the regulation of GB 8076；
The aluminium powder is flown the flakey aluminium powder of metallurgy Nai Cai Co., Ltd production by Zhengzhou roc, and main performance meets GB/T
2085.1-2007 regulation；
The swelling agent produces sulphur calcium chlorate swelling agent, main property by Beijing Dechang great achievement architectural engineering technology Co., Ltd
It can should meet the regulation of GB23439-2009；
The air entraining agent uses the DC-3 type alkylated aromatic sulfonic acid bleed of Henan Titaning Chemical Technology Co., Ltd.'s production
Agent, main performance meet the regulation of GB8076-2008；
The defoaming agent is powdered organic silicon defoaming agent by Jiangsu Scott Technology Ltd., and main performance meets
The regulation of GB/T 26527-2011；
The limestone mineral powder is produced by Changzhou Liyang Shang Pei building stones factory, and performance indicator satisfaction " apply by asphalt highway
Work technical specification " (JTG F40-2004) regulation.
Above-mentioned a kind of preparation method applied to Semi rigid bituminous surface grouting material: by all raw material according to quality percentage
Than weigh it is good after, according to sand, active blend, limestone mineral powder, water, water-reducing agent, aluminium powder, swelling agent, air entraining agent, defoaming agent
Sequence launches various raw material, stirs 1.5min, adding subparticle modified emulsifying asphalt to be stirred for 2-3min i.e. can be made into grouting
Material, performance indicator are shown in Table 10.
Table 10
Embodiment two
This embodiment differs from embodiment 1 in that:
A kind of Semi rigid bituminous surface big pore gap asphalt be by be by rubber high adhered modification pitch, mineral aggregate,
Filler composition, each component account for the gross mass percentage of porous asphalt are as follows: rubber high adhered modification pitch 4.2%, mineral aggregate
93%, the formate gradation composition of filler 2.8%, gross mass 100%, mineral aggregate and filler mixture is shown in Table 11.Wherein rubber height is viscous changes
Property pitch by handing over 70# pitch, waste-tyre rubber-powder, modified stabilizer to form again, each composition accounts for the total of rubber high adhered modification pitch
Mass percent are as follows: hand over 70# pitch 78%, waste-tyre rubber-powder 20%, modified stabilizer 2% again, performance indicator is shown in Table 12.
Porous asphalt performance indicator is shown in Table 13.
Table 11
Table 12
Table 13
| Serial number | Detection project | Unit | Testing result | Technical requirements |
| 1 | Connectivity gap rate | % | 30 | ≥25 |
| 2 | Dynamic stability (60 DEG C, 0.7MPa) | Secondary/mm | 7384.5 | ≥6000 |
| 3 | Marshall stability | KN | 13.4 | ≥6 |
| 4 | Marshall residual stability | % | 90.7 | ≥80 |
| 5 | Freeze-thaw split intensity ratio | % | 85.9 | ≥80 |
Grouting material used in a kind of Semi rigid bituminous surface is by subparticle modified emulsifying asphalt, PC42.5 comprehensive silicon
Acid salt cement, granulated blast-furnace slag, Machine-made Sand, water, water-reducing agent, aluminium powder, swelling agent, air entraining agent, defoaming agent, limestone mineral powder are mixed
It closes, each component accounts for the gross mass percentage of grouting material are as follows: subparticle modified emulsifying asphalt 14.5%, PC42.5 comprehensive silicon
Acid salt cement 18%, granulated blast-furnace slag 3%, river sand 29.376%, water 9%, water-reducing agent 0.33%, aluminium powder 0.004%, expansion
Agent 2.41%, air entraining agent 0.38%, limestone mineral powder 23%.Wherein granulated blast-furnace slag performance indicator is shown in Table 14, and Machine-made Sand is thin
Degree is 2.1, and grouting material performance indicator is shown in Table 15.
Table 14
Table 15
The above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations.There is no necessity and possibility to exhaust all the enbodiments, above and below each raw material of the present invention
Limit value and section can realize the present invention.
Claims (5)
1. a kind of Semi rigid bituminous surface material, it is characterised in that:
It is made of porous asphalt and grouting material, the percent by volume of two kinds of compositions are as follows: porous asphalt is
75%-85%, grouting material 15%-25%；
The porous asphalt accounts for porous asphalt by following by mineral aggregate, filler, rubber high adhered modification pitch
Mass parts ratio mix:
Mineral aggregate be 90-95 parts,
Filler be 1-3 parts,
Rubber high adhered modification pitch is 2-5 parts；
The grouting material by subparticle modified emulsifying asphalt, PC42.5 composite Portland cement, active blend, sand, water, subtract
Aqua, aluminium powder, swelling agent, air entraining agent, defoaming agent, limestone mineral powder are mixed by the mass parts ratio for accounting for grouting material as follows:
10-25 parts of subparticle modified emulsifying asphalt,
15-25 parts of PC42.5 composite Portland cement,
3-10 parts of active blend,
20-30 parts of sand,
5-15 parts of water,
0.2-0.4 parts of water-reducing agent,
0.001-0.006 parts of aluminium powder,
1-3 parts of swelling agent,
0.2-0.4 parts of air entraining agent,
0.2-1.5 parts of defoaming agent,
10-25 parts of limestone mineral powder；
Wherein, the interconnected pore rate in porous asphalt is greater than 60 DEG C of 25%, wheel tracking test dynamic stability, 0.7MPa
Not less than 6000 times/mm；The grouting material performance indicator meets: grouting material temperature is 5-40 DEG C, fluidity 18-26s, work when
Between not less than 30min, 28 days flexural strengths be not less than 15Mpa, 28 days elasticity modulus not less than 3Mpa, 28 days compression strength
7000-10000Mpa, 28 days relative dynamic elastic modulus not less than 60%, fatigue resistance 28 days meet 10000 times it is not broken.
2. Semi rigid bituminous surface material according to claim 1, it is characterised in that: the mixture of the mineral aggregate and filler
Grading limit is 31.5mm sieve pore by being that 80-100%, 19mm sieve pore percent of pass are 60- for 100%, 26.5mm sieve pore percent of pass
100%, 16mm sieve pore percent of pass be 45-90%, 13.2mm sieve pore percent of pass be 30-82%, 9.5mm sieve pore percent of pass be 16-70%,
4.75mm sieve pore percent of pass is that 2-12%, 0.075mm sieve pore percent of pass are 1-3%.
3. Semi rigid bituminous surface material according to claim 1, it is characterised in that: the rubber high adhered modification pitch by
It is steady to account for the waste-tyre rubber-powder of gross mass 70-85% handed over 70# pitch again, account for gross mass 10-25%, the modification for accounting for gross mass 4-6%
Determine agent composition, gross mass 100%.
4. Semi rigid bituminous surface material according to claim 1, it is characterised in that: the subparticle modified emulsifying drip
Blueness is cationic emulsified bitumen, and evaporated residue content is not less than 60%, and size distribution is 1-5 μm；The active blend is by powder
One of coal ash, granulated blast-furnace slag, tailing containing lithium, silicon ash or a variety of compositions；The sand is river sand or Machine-made Sand, fineness mould
Number is 1.4-2.2.
5. the Semi rigid bituminous surface material of one of a kind of claim 1-4, it is characterized in that: used macrovoid pitch is mixed
The preparation method for closing material, includes the following steps
1) rubber high adhered modification pitch: step A is prepared, is weighed by mass percentage and is accounted for gross mass 70-85% and be heated to 180 DEG C
70# pitch is handed over again；The waste-tyre rubber-powder for accounting for gross mass 10-25% is added to the reaction for holding step A products therefrom by step B
It is stirred in tank；The modified stabilizer for accounting for gross mass 4-6% is added in step B products therefrom and stirs by step C, and in 1h
The temperature of reactor tank is risen to 220 DEG C；Step D after persistently stirring step C products therefrom, cools to 170 DEG C and obtains finished product
Rubber high adhered modification pitch；
2) it prepares the mixture of mineral aggregate and filler: weighing the 90-95 parts of mineral aggregates for being heated to 190 DEG C, 1-3 parts of heating by mass fraction
To 190 DEG C of filler, mineral aggregate and filler are launched to 190 DEG C mix and stir and continue constant temperature stirring in pot；
3) the finished rubber high adhered modification pitch that mass fraction is 2-5 parts is added in the mixture of mineral aggregate and filler and is persistently stirred
After mixing to get arrive porous asphalt.
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