CN109133772A - Cold-mix semi-flexible composite pavement material and preparation method thereof - Google Patents
Cold-mix semi-flexible composite pavement material and preparation method thereof Download PDFInfo
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- CN109133772A CN109133772A CN201810890824.9A CN201810890824A CN109133772A CN 109133772 A CN109133772 A CN 109133772A CN 201810890824 A CN201810890824 A CN 201810890824A CN 109133772 A CN109133772 A CN 109133772A
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Classifications
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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
- 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
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/50—Flexible or elastic materials
- C04B2111/503—Elastic materials
-
- 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 invention discloses a kind of Cold-mix semi-flexible composite pavement materials and preparation method thereof, be grouped as by the group of following parts by weight: 75~100 parts by 15~25 parts of coarse aggregates, 15~25 parts of fine aggregates, 10~20 parts of limestone miberal powders and 10~30 parts of pitches form big interstitial matrix asphalt, 25~65 parts by 5~15 parts of cement, 5~15 parts of fine sands, 3~5 parts of mineral admixtures, 2~5 parts of additives and 10~25 parts of water form cement mortar: the raw material sources of the Cold-mix semi-flexible composite pavement material are extensive, preparation method is simple, it is at low cost, be conducive to be widely applied in pavement engineering construction field.
Description
Technical field
The present invention relates to modern pavement engineering construction technique fields, and in particular to a kind of Cold-mix semi-flexible composite pavement material
And preparation method thereof.
Background technique
Semi-flexible composite pavement has flexibility similar with bituminous pavement, and the rigidity with cement pavement, couples hardness with softness.
It can be in Rut resistance, the in terms of improvement pavement usage for anti-passage, reducing expansion joint, improving ground surface material
Energy.
The matrix asphalt of traditional half-flexible pavement material mostly uses heat to mix hot paving technique, when mixing and stirring pitch with
Aggregate all needs to be heated to higher temperature, consumes mass energy and pollution environment；In addition, the health to operator is also made
At a degree of harm, while the problem of there is also ageings of asphalt.It is existing from bearing capacity, anti-fatigue performance and crack resistance
The method for preparing composite pavement material of starting in terms of energy mainly has:
A kind of semi-flexible composite pavement material is disclosed in patent document CN201310169974.8, component is by mass percentage
Are as follows: 65~75% rubble or macadam-aggregate mix；15~20% self-control dry powder cement mortar；3~8% emulsified asphalt；2~5%
Miberal powder；5~10% water.The Cold-mix semi-flexible composite pavement material construction technology is easy, without using applying for large-scale production
Work is mechanical and equipment, mixes and stirs under room temperature, is formed without heating, subsequent grouting procedure also carries out at normal temperature, therefore can save energy
Environmental protection；Preparation method is using the cement injection mortar in big gap open gradation cream asphalt.
It is disclosed in patent document CN200910272815.4 a kind of based on interface modification pouring type organic/inorganic composite road
The preparation method of plane materiel material includes the following steps: the preparation of 1) interface modifier: being 1. in mass ratio silane coupling agent: molten
Agent: catalyst: stabilizer=100:18~32:10~40:2~8 is chosen；2. catalyst is added in the container equipped with solvent, use
Vinegar acid for adjusting pH be 5.5~6.5, obtain lotion, stand, be added silane coupling agent, finally be added stabilizer, stirring to get
Interface modifier；2) preparation based on interface modification filling type organic-inorganic composite pavement material: 1. matrix asphalt
Preparation；2. the preparation of interface modification cement mortar；3. paving for matrix asphalt is carried out first, by interface modification cement
Mortar carries out 5~8 pourings in the upper surface of matrix asphalt, conserves 28d, obtains having based on interface modification filling type
Machine-inorganic composite pavement material.
Summary of the invention
The present invention is intended to provide a kind of Cold-mix semi-flexible composite pavement material, to solve traditional half-flexible pavement material preparation
And to have the consumption energy in big and pollute environment, the health for endangering operator and pitch technology easy to aging and ask
Topic.
The present invention further discloses the preparation methods of the Cold-mix semi-flexible composite pavement material, it is intended to solve existing such
Material preparation method complexity, technical problem at high cost.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of Cold-mix semi-flexible composite pavement material is designed, in parts by weight, by 75~100 parts big interstitial matrix asphalt
It is formed with 25~65 parts of cement mortar；
Coarse aggregate that big interstitial matrix asphalt is 5~16mm by 15~25 parts of partial sizes, 15~25 parts of partial sizes are 1~5mm
Fine aggregate, 10~20 parts of limestone miberal powders and 10~30 parts of pitches composition；
Cement mortar is by 5~15 parts of cement, 5~15 parts of fine sands, 3~5 parts of mineral admixtures, 2~5 parts of additives and 10~25 parts
Water composition.
Preferred: coarse aggregate is at least one of basalt, granite or the limestone that partial size is 5~16mm；Thin collection
Material is at least one of basalt, granite or the limestone that partial size is 1~5mm；Cement is ordinary portland cement or powder
Coal ash cement；Fine sand is the yellow ground or river sand that partial size is 0.08mm~0.63mm；Mineral admixture is by ground granulated blast furnace slag, silicon
Ash is formed by the weight ratio of 1:0.8~1.2.
Preferred: additive by weight ratio is 0.8~1.2:0.8~1.2:0.8~1.2:0.8~1.2 water-retaining agent, viscous
Tie agent, swelling agent and water-reducing agent composition.
Preferred: water-retaining agent is at least one of industrial starch ether, methylcellulose；Binder is silane coupled
At least one of agent, compound silane coupling agent；Swelling agent is at least one of calcium aluminate, MgO expansion agent；Water-reducing agent
For at least one of poly-carboxylic high-performance retardation water reducing agent, powdery sulfamate water reducer.
A kind of preparation method of Cold-mix semi-flexible composite pavement material, comprising the following steps:
(1) preparation of big interstitial matrix asphalt: big interstitial matrix asphalt is weighed, is mixed at a temperature of 15~40 DEG C
30~120min of stirring is closed, and the voidage of mixture is made to reach 20~35%；
(2) preparation of cement mortar: weighing cement, fine sand and mineral admixture, and dry mixing mixes 5~10min, adds additive
And water, 5~30min is stirred at a temperature of 20~30 DEG C；
(3) cement mortar made from step (2) is poured into the resulting big interstitial matrix asphalt of step (1), until complete
The gap in mixture is filled up entirely, by excess surface cement mortar scraping；
(4) it conserves, is conserved 24 hours under standard conditions.
Preferred: coarse aggregate is at least one of basalt, granite or the limestone that partial size is 5~16mm；Thin collection
Material is at least one of basalt, granite or the limestone that partial size is 1~5mm.
Preferred: in step (1), it is 0.075mm square hole screen that limestone mineral powder, which crosses aperture,；Pitch is SBS modified pitch.
Preferred: in step (2), cement is ordinary portland cement；Fine sand is the yellow ground of partial size 0.08mm~0.63mm
Or river sand；Mineral admixture is formed by ground granulated blast furnace slag, silicon ash or by the weight ratio of 1:0.8~1.2.
It is preferred: in step (2), water-retaining agent, binder, swelling agent and diminishing that additive is 1:1:1:1 by weight ratio
Agent composition.
Preferred: water-retaining agent is at least one of industrial starch ether, methylcellulose；Binder is silane coupled
At least one of agent, compound silane coupling agent；Swelling agent is at least one of calcium aluminate, MgO expansion agent；Water-reducing agent
For at least one of poly-carboxylic high-performance retardation water reducing agent, powdery sulfamate water reducer.
Compared with prior art, the beneficial technical effect of the present invention lies in:
1. raw material sources of the present invention are extensive, preparation method is simple, at low cost, is conducive to answer extensively in pavement engineering construction field
With.
2. the present invention forms matrix after cold mixing cold-application with big interstitial matrix asphalt, homemade cement mortar is poured into
And the composite pavement material formed, energy consumption is reduced, environmental pollution is avoided.
3. the present invention has height using the composite pavement material for pouring into preparation of homemade cement mortar, composite pavement material
Intensity, good toughness, excellent elasticity and bonding capacity, improve the bonding between the bearing capacity of ground surface material, mixture
Power.
Specific embodiment
Illustrate a specific embodiment of the invention below with reference to embodiment, but following embodiment is used only to be described in detail
The present invention does not limit the scope of the invention in any way.
Related instrument and equipment is routine instrument device unless otherwise instructed in the examples below；It is related
The raw material of industry is commercially available regular industrial raw material unless otherwise instructed；Related processing method, unless otherwise instructed,
It is conventional method.
Embodiment 1
A kind of Cold-mix semi-flexible composite pavement material: the coarse aggregate that 15kg partial size is 5mm is weighed, the thin collection that 15kg partial size is 1mm
It is mixed, stirs in the SBS modified pitch investment reaction kettle of material, the limestone miberal powder for crossing 0.075mm square hole screen of 10kg and 10kg
15 DEG C of temperature, mixing time 30min are mixed, the big interstitial matrix asphalt that voidage is 20% is obtained；Weigh 5kg ordinary silicon
Acid salt cement, 5kg partial size are 0.08mm yellow ground and 3kg ground granulated blast furnace slag, are added sequentially in cement mixer, are done
Mixing the time is 5min, is uniformly mixed, adds 2kg additive and 10kg water, and being stirred temperature is 20 DEG C, is stirred the time
For 5min, continues to be stirred, obtain cement mortar；25kg cement mortar is poured into the big interstitial matrix asphalt of 75kg,
Until being fully filled with the gap in mixture, excess surface cement mortar is blown off；It conserves, health 24 hours under standard conditions,
To obtain the final product.
Embodiment 2
A kind of Cold-mix semi-flexible composite pavement material: the coarse aggregate that 20kg partial size is 11mm is weighed, the thin collection that 20kg partial size is 3mm
It is mixed, stirs in the SBS modified pitch investment reaction kettle of material, the limestone miberal powder for crossing 0.075mm square hole screen of 15kg and 20kg
30 DEG C of temperature, mixing time 75min are mixed, the big interstitial matrix asphalt that voidage is 29% is obtained；Weigh 10kg ordinary silicon
Acid salt cement, the ground granulated blast furnace slag and silicon ash that 10kg partial size is 0.08mm river sand and 4kg same-size ratio, are added sequentially to cement
In mortar mill, the dry mixing time is 8min, is uniformly mixed, adds 4kg additive and 17kg water, and being stirred temperature is 25
DEG C, being stirred the time is 17min, continues to be stirred, obtains cement mortar；45kg cement mortar is poured into the big gap base of 85kg
In body asphalt, until being fully filled with the gap in mixture, excess surface cement mortar is blown off；Maintenance, standard bar
Under part health 24 hours to get.
Embodiment 3
A kind of Cold-mix semi-flexible composite pavement material: the coarse aggregate that 25kg partial size is 16mm is weighed, the thin collection that 25kg partial size is 5mm
It is mixed, stirs in the SBS modified pitch investment reaction kettle of material, the limestone miberal powder for crossing 0.075mm square hole screen of 20kg and 30kg
40 DEG C of temperature, mixing time 120min are mixed, the big interstitial matrix asphalt that voidage is 35% is obtained；Weigh 15kg fine coal
Ash concrete, 15kg partial size are 0.63mm river sand and 5kg silicon ash, are added sequentially in cement mixer, the dry mixing time is
10min is uniformly mixed, adds 5kg additive and 25kg water, and being stirred temperature is 30 DEG C, and being stirred the time is
30min continues to be stirred, obtains cement mortar；65kg cement mortar is poured into the big interstitial matrix asphalt of 100kg,
Until being fully filled with the gap in mixture, excess surface cement mortar is blown off；It conserves, health 24 hours under standard conditions,
To obtain the final product.
Water-retaining agent, binder, swelling agent and the water-reducing agent that additive used in embodiment 1-3 is 1:1:1:1 by weight ratio
Composition.
Ground surface material performance made from embodiment 1-3 is tested, according to specification, " highway engineering pitch and pitch are mixed
Material testing regulations (JTG E20-2011 " test method tested, and the performance test of each parameter refers to following standard, and performance is surveyed
Test result is as shown in table 1.
1. wheel tracking test surveys 70 DEG C of test dynamic stabilities: " highway engineering pitch and Asphalt Mixture Experiment regulation " respectively
JTG E20-2011(T0719-2011) ；
2. low temperature bend test tests -10 DEG C of extreme flexion strains: " highway engineering pitch and Asphalt Mixture Experiment regulation "
JTG E20-2011(T 0715-2011) ；
3. Marshall residual stability is tested, test immersion Marshall residual stability: " highway engineering pitch and asphalt
Testing regulations " JTG E20-2011 (T0709-2011)；
4. tensile property measures: " highway engineering pitch and Asphalt Mixture Experiment regulation " GBT1040.3-2006.
1 test result of table
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Bending tensile strength/MPa | 5.8 | 6.2 | 5.6 |
| Dynamic stability/(secondary/mm) | 1158 | 1152 | 1265 |
| Marshall stability/KN | 48 | 52 | 46 |
| Fracture elongation/% | 240 | 260 | 235 |
| Tensile strength/MPa | 2.76 | 2.85 | 2.70 |
As shown in Table 1: the bending tensile strength of Cold-mix semi-flexible composite pavement material prepared by embodiment 1,2 and 3 is respectively
5.8 MPa, 6.2Mpa and 5.6 MPa, Marshall stability have reached 48 KN, 52KN and 46 KN, that is, the cold mixing prepared half
Flexible composite pavement material has superior elasticity and bonding capacity；Its track dynamic stability be respectively 1158 times/mm, 1152 times/
Mm and 1265 time/mm, that is, the Cold-mix semi-flexible composite pavement material prepared has strong rutting resistance；Its fracture elongation is flat
Mean value is 240%, 260% and 235%, and tensile strength is respectively 2.76 MPa, 2 .85MPa and 2.70 MPa, is referred to more than technology
The numerical value that the fracture elongation average value that mark requires is 200% and tensile strength is 1.5MPa, that is, the cold mixing prepared are semi-flexible compound
Ground surface material has very high-intensitive and toughness.
The present invention is described in detail above in conjunction with embodiment, still, person of ordinary skill in the field can
Understand, without departing from the purpose of the present invention, each design parameter in above-described embodiment can also be changed, shape
At multiple specific embodiments, it is common variation range of the invention, is no longer described in detail one by one herein.
Claims (10)
1. a kind of Cold-mix semi-flexible composite pavement material, it is characterised in that: in parts by weight, it is by 75~100 parts of big gap bases
Body asphalt and 25~65 parts of cement mortar compositions；
Coarse aggregate that the big interstitial matrix asphalt is 5~16mm by 15~25 parts of partial sizes, 15~25 parts of partial sizes are 1~
The fine aggregate of 5mm, 10~20 parts of limestone miberal powders and 10~30 parts of pitch compositions；
The cement mortar by 5~15 parts of cement, 5~15 parts of fine sands, 3~5 parts of mineral admixtures, 2~5 parts of additives and 10~
25 parts of water compositions.
2. Cold-mix semi-flexible composite pavement material according to claim 1, it is characterised in that: the coarse aggregate is that partial size is
At least one of basalt, granite or limestone of 5~16mm；The fine aggregate be partial size be 1~5mm basalt,
At least one of granite or limestone；The cement is ordinary portland cement or pulverized fuel ash cement；The fine sand is partial size
For the yellow ground or river sand of 0.08mm~0.63mm；The mineral admixture presses 1:0.8~1.2 by ground granulated blast furnace slag, silicon ash
Weight ratio composition.
3. Cold-mix semi-flexible composite pavement material according to claim 1, it is characterised in that: the additive is by weight ratio
For 0.8~1.2:0.8~1.2:0.8~1.2:0.8~1.2 water-retaining agent, binder, swelling agent and water-reducing agent composition.
4. Cold-mix semi-flexible composite pavement material according to claim 3, it is characterised in that: the water-retaining agent is industrial
At least one of starch ether, methylcellulose；The binder is silane coupling agent, at least one in compound silane coupling agent
Kind；The swelling agent is at least one of calcium aluminate, MgO expansion agent；The water-reducing agent is that poly-carboxylic high-performance slow setting subtracts
At least one of aqua, powdery sulfamate water reducer.
5. a kind of preparation method of Cold-mix semi-flexible composite pavement material described in claim 1, it is characterised in that: including following
Step:
(1) preparation of big interstitial matrix asphalt: the big interstitial matrix asphalt is weighed, in 15~40 DEG C of temperature
30~120min of lower mixing, and the voidage of mixture is made to reach 20~35%；
(2) preparation of cement mortar: weighing the cement, fine sand and mineral admixture, and dry mixing mixes 5~10min, adds institute
Additive and water are stated, 5~30min is stirred at a temperature of 20~30 DEG C；
(3) cement mortar made from the step (2) is poured into the resulting big interstitial matrix asphalt of the step (1)
In, until the gap in the mixture is fully filled with, by excess surface cement mortar scraping；
(4) it conserves 24 hours.
6. the preparation method of Cold-mix semi-flexible composite pavement material according to claim 5, it is characterised in that: the rough set
Material is at least one of basalt, granite or the limestone that partial size is 5~16mm；The fine aggregate is that partial size is 1~5mm
At least one of basalt, granite or limestone.
7. the preparation method of Cold-mix semi-flexible composite pavement material according to claim 5, it is characterised in that: the step
(1) in, it is 0.075mm square hole screen that the limestone mineral powder, which crosses aperture,；The pitch is SBS modified pitch.
8. the preparation method of Cold-mix semi-flexible composite pavement material according to claim 5, it is characterised in that: the step
(2) in, the cement is ordinary portland cement or pulverized fuel ash cement；The fine sand is the yellow ground of partial size 0.08mm~0.63mm
Or river sand；The mineral admixture is formed by ground granulated blast furnace slag, silicon ash or by the weight ratio of 1:0.8~1.2.
9. the preparation method of Cold-mix semi-flexible composite pavement material according to claim 5, it is characterised in that: the step
(2) in, the additive is made of water-retaining agent, binder, swelling agent and the water-reducing agent that weight ratio is 1:1:1:1.
10. the preparation method of Cold-mix semi-flexible composite pavement material according to claim 9, it is characterised in that: the guarantor
Aqua is at least one of industrial starch ether, methylcellulose；The binder is silane coupling agent, compound silane coupled
At least one of agent；The swelling agent is at least one of calcium aluminate, MgO expansion agent；The water-reducing agent is polycarboxylic acids
At least one of high-performance retardation water reducing agent, powdery sulfamate water reducer.
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| CN113831081A (en) * | 2021-09-26 | 2021-12-24 | 武汉工程大学 | Asphalt/cement composite base normal-temperature self-compacting asphalt concrete and preparation method thereof |
| CN115108762A (en) * | 2022-05-13 | 2022-09-27 | 武汉工程大学 | Coal ash-based geopolymer material for pouring porous asphalt mixture and preparation method thereof |
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