CN108821688A - A kind of aggregate interlocking type road surface base layer construction method thereof - Google Patents

A kind of aggregate interlocking type road surface base layer construction method thereof Download PDF

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Publication number
CN108821688A
CN108821688A CN201810779668.9A CN201810779668A CN108821688A CN 108821688 A CN108821688 A CN 108821688A CN 201810779668 A CN201810779668 A CN 201810779668A CN 108821688 A CN108821688 A CN 108821688A
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CN
China
Prior art keywords
aggregate
road surface
base layer
big stone
surface base
Prior art date
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Pending
Application number
CN201810779668.9A
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Chinese (zh)
Inventor
沈卫国
张宇星
吉晓莉
李将伟
许鸽龙
张昺榴
黄嘉祺
薛宸沂
吴铭清
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Priority to CN201810779668.9A priority Critical patent/CN108821688A/en
Publication of CN108821688A publication Critical patent/CN108821688A/en
Pending legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
    • 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
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/343—Crack resistant 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 aggregate interlocking type road surface base layer construction method thereofs, include the following steps：Using the big Stone of mutual interlocking as strength bone laying construction road surface；The gap between big Stone is filled with self-compaction material, it is curing；Strength bone is formed by the mutual interlocking of big Stone, and bearing capacity is provided, self-compaction material fills the gap between big Stone skeleton and provides lateral confinement, form that a kind of globality is good, and bearing capacity is strong, the few aggregate interlocking type road surface base layer material semi-flexible of shrinkage cracking.Gap can simplify technique between filling big Stone by self-compaction material, significantly reduce the artificial dependency degree in work progress, save the stability of cost of labor and lifting construction quality, be the effective way that construction has good performance road of being on active service.

Description

A kind of aggregate interlocking type road surface base layer construction method thereof
Technical field
The invention belongs to building material technical fields, and in particular to a kind of aggregate interlocking type road surface base layer construction method thereof.
Background technique
By year ends 2016, highway in China total mileage has been approached 4,700,000 kilometers, and increases above 11.9 ten thousand kilometers year, The demand cumulative year after year of road construction material.Semi-rigid Pavement of Asphalt be China's road typical structure it One.Wherein, semi-rigid type base has certain plate body, rigidity, tensile strength, fatigue resistance, good water stability characteristic (quality), Stress dispersion capacity is strong.Bituminous pavement surfacing is seamless, road-ability is high, low noise, open to traffic are fast, maintenance letter Just, it is suitable for road surface stage construction.So having, integral strength is high, stability is good, resistance to permanent deformation and anti-traffic load are tired Damage capability is relatively strong, adapts to the semi-rigid type Base Asphalt Pavement of the features such as heavy traffic, is widely applied in China.
But the disease problem especially early disease of semi-rigid asphalt pavement is very universal in recent years, has caused Many diseases of semi-rigid asphalt pavement are attributed to semi-rigid sub-base material performance by extensive concern, some researchers Certain inherent shortcomings, it is most generally also to influence one of disease the most far-reaching that wherein shrinkage cracking, which is it,.Generally believe this road Face can be derived many diseases because cracking, such as since the reflection crack that base course crack induces drastically influences road surface entirety Performance and durability；It due to the presence in crack, causes road surface plate body discontinuous, plate body edge will be increased under Driving Loading Deformation, thus at crack transmit excessive pressure to roadbed top surface, so as to shorten the service life of these structure sheafs；In vehicle, water Point, under the comprehensive function of factors such as freeze thawing, falling off for aggregate or fritter pitch would generally occur along crack for wearing course, and cause face Layer it is loose；Moisture is immersed in sub-surface, underlayment by crack, even into the subgrade soils very sensitive to humidity, Soften soil matrix, jeopardizes entire road structure etc..
Also it takes place frequently just because of this Pavement Base Structure form disease the most universal, it is difficult to effectively prevent and remove It controls, China has been carried out in terms of sub-surface from rigidity to widespread attempt flexible in recent years.
It is the technology formed in developmental research in 2000 that water, which surely fills big Stone base material, with big grain Diameter rubble is skeleton, and the steady gradation fine aggregate of water is filler material, fills the gap in big Stone skeleton, forms and couple hardness with softness Compact structure.Its advantage is that improving traditional semi-rigid type base problem of Cracking and improving resistance to lifting capacity, disadvantage is mainly Construction technology is cumbersome, to artificial degree of dependence, high, quality is difficult to control.The present invention provides a kind of aggregate interlocking type sub-surface material Material, is made of big Stone bearing capacity skeleton and the self-compaction packing material of mutual interlocking.
Summary of the invention
It is an object of that present invention to provide a kind of construction method of sub-surface, it is good to be prepared globality, bearing capacity By force, the few aggregate interlocking type sub-surface semi-flexible of shrinkage cracking.
In order to achieve the above objectives, as follows using technical solution：
A kind of aggregate interlocking type road surface base layer construction method thereof, includes the following steps：
Using the big Stone of mutual interlocking as strength bone laying construction road surface；
The gap between big Stone is filled with self-compaction material, it is curing；
Wherein, the self-compaction packing material includes the component of following match ratio：10~400kg/m of coarse aggregate content3, it is thin 1000~1500kg/m of dosage of gathering materials3, 80~260kg/m of cement consumption3, 10~200kg/m of mineral admixture dosage3, the ratio of mud 0.6~1.5.
According to the above scheme, the coarse aggregate grain size range is 4.75~9.5mm；Elongated particles are no more than 15wt%, pressure Broken value index is not higher than 30%.
According to the above scheme, the fine aggregate is natural sand, artificial sand, aggregate chips, and fineness modulus is limited to 2.5-3.5
According to the above scheme, the mineral admixture agstone, flyash, slag micropowder, phosphorous slag micropowder and slag micro powder One or more.
According to the above scheme, the big Stone particle size range is 60~150mm, and elongated particles are no more than 15wt%, The control of its porosity ranges is 40%~50% after paving.
Compared with prior art, technical solution of the present invention has the advantages that：
Strength bone being formed by the mutual interlocking of big Stone, bearing capacity being provided, self-compaction material fills big Stone Gap between skeleton provides lateral confinement, forms that a kind of globality is good, and bearing capacity is strong, the few aggregate interlocking semi-flexible of shrinkage cracking Type road surface base layer material.
Gap can simplify technique between filling big Stone by self-compaction material, significantly reduce artificial in work progress Dependency degree saves the stability of cost of labor and lifting construction quality, is effective way that construction has good performance road of being on active service Diameter.
Specific embodiment
Following embodiment further illustrates technical solution of the present invention, but not as limiting the scope of the invention.
Embodiment 1
Using 42.5 cement of P.O, second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~9.5mm is broken Stone, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 270kg/m3, Machine-made Sand dosage is 1179kg/m3, water Glue ratio is 0.8, and the total dosage of cementitious material is 383kg/m3, wherein cement consumption is 220kg/m3, flyash dosage is 163kg/ m3, divergence reach 730mm, T500Less than 2 seconds, 7 days unconfined compressive strengths were 5.2MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 48% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 7.4MPa.
Embodiment 2
Using 42.5 cement of P.O, second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~9.5mm is broken Stone, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 270kg/m3, Machine-made Sand dosage is 1179kg/m3, water Glue ratio is 0.8, and the total dosage of cementitious material is 380kg/m3, wherein cement consumption is 180kg/m3, flyash dosage is 200kg/ m3, divergence reach 780mm, T500Less than 2 seconds, 7 days unconfined compressive strengths were 4.4MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 49% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 6.8MPa.
Embodiment 3
Using 42.5 cement of P.O, second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~9.5mm is broken Stone, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 270kg/m3, Machine-made Sand dosage is 1179kg/m3, water Glue ratio is 0.9, and the total dosage of cementitious material is 380kg/m3, wherein cement consumption is 180kg/m3, flyash dosage is 170kg/ m3, divergence reach 780mm, T500Less than 2 seconds, 7 days unconfined compressive strengths were 3.5MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 46% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 5.7MPa.
Embodiment 4
This uses 42.5 cement of P.O, and second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~9.5mm is broken Stone, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 270kg/m3, Machine-made Sand dosage is 1297kg/m3, water Glue ratio is 0.74, and the total dosage of cementitious material is 359kg/m3, wherein cement consumption is 197kg/m3, flyash dosage is 162kg/ m3, divergence reach 550mm, T500Less than 2 seconds, 7 days unconfined compressive strengths were 4.6MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 50% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 7.8MPa.
Embodiment 5
This uses 42.5 cement of P.O, and second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~9.5mm is broken Stone, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 270kg/m3, Machine-made Sand dosage is 1226kg/m3, water Glue ratio is 0.8, and the total dosage of cementitious material is 373kg/m3, wherein cement consumption is 205kg/m3, flyash dosage is 168kg/ m3, divergence reach 580mm, T500Less than 2 seconds, 7 days unconfined compressive strengths were 4.5MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 50% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 6.8MPa.
Embodiment 6
This test, which is made, uses P.C 32.5R cement, second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~ 9.5mm rubble, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 270kg/m3, Machine-made Sand dosage is 1085kg/m3, water Glue ratio is 1.0, and the total dosage of cementitious material is 350kg/m3, wherein cement consumption is 180kg/m3, flyash dosage is 170kg/ m3, divergence reach 695mm, T500Less than 2 seconds, 7 days unconfined compressive strengths were 2.2MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 50% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 4.6MPa.
Embodiment 7
Test, which is made, uses P.C 32.5R cement, second class powered coal ash, Machine-made Sand (area II, fineness modulus 2.95), 4.75~ 9.5mm rubble, the big Stone of 60~150mm, drinking water.
Self-compaction packing material 4.75mm~9.5mm rubble dosage is 378kg/m3, Machine-made Sand dosage is 1014kg/m3, (volume fraction refers to volume fraction of the sand in mortar), water-cement ratio 1.34, the total dosage of cementitious material are 269.7kg/m3, wherein water Mud dosage is 180kg/m3, flyash dosage is 89.7kg/m3, divergence reach 755mm, T500Less than 2 seconds, 7 days without lateral confinement resistance to compression Intensity is 1.2MPa.
The big Stone of the 60mm~150mm that paves, controlling its height is 18cm, and voidage 50% fills self-compaction Material filling is assisted closely knit and is flattened, substrate surface covers health using vibration plate to big Stone gap in substrate surface Cloth simultaneously conserves 7 days.7 days unconfined compressive strengths of base material reach 2.8MPa.

Claims (5)

1. a kind of aggregate interlocking type road surface base layer construction method thereof, it is characterised in that include the following steps：
Using the big Stone of mutual interlocking as strength bone laying construction road surface；
The gap between big Stone is filled with self-compaction material, it is curing；
Wherein, the self-compaction packing material includes the component of following match ratio：10~400kg/m of coarse aggregate content3, fine aggregate 1000~1500kg/m of dosage3, 80~260kg/m of cement consumption3, 10~200kg/m of mineral admixture dosage3, the ratio of mud 0.6 ~1.5.
2. aggregate interlocking type road surface base layer construction method thereof as described in claim 1, it is characterised in that the coarse aggregate grain size range For 4.75~9.5mm；Elongated particles are no more than 15wt%, and crush values index is not higher than 30%.
3. aggregate interlocking type road surface base layer construction method thereof as described in claim 1, it is characterised in that the fine aggregate be natural sand, Artificial sand, aggregate chips, fineness modulus are limited to 2.5-3.5.
4. aggregate interlocking type road surface base layer construction method thereof as described in claim 1, it is characterised in that the mineral admixture lime The one or more of mountain flour, flyash, slag micropowder, phosphorous slag micropowder and slag micro powder.
5. aggregate interlocking type road surface base layer construction method thereof as described in claim 1, it is characterised in that the big Stone partial size Range is 60~150mm, and elongated particles are no more than 15wt%, and the control of its porosity ranges is 40%~50% after paving.
CN201810779668.9A 2018-07-16 2018-07-16 A kind of aggregate interlocking type road surface base layer construction method thereof Pending CN108821688A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110230240A (en) * 2019-06-21 2019-09-13 河北迁曹高速公路开发有限公司 Steel slag semi-flexible composite road surface structure
CN113123187A (en) * 2021-04-30 2021-07-16 武汉理工大学 Waste concrete fist stone pavement base and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060054056A1 (en) * 2004-09-13 2006-03-16 Rockwood Pigments Na, Inc. Process for producing manufactured concrete products with reduced efflorescence
CN105819784A (en) * 2016-03-15 2016-08-03 王壹帆 Cement mortar mixed material for stabilizing macadam pavement base and construction method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060054056A1 (en) * 2004-09-13 2006-03-16 Rockwood Pigments Na, Inc. Process for producing manufactured concrete products with reduced efflorescence
CN105819784A (en) * 2016-03-15 2016-08-03 王壹帆 Cement mortar mixed material for stabilizing macadam pavement base and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110230240A (en) * 2019-06-21 2019-09-13 河北迁曹高速公路开发有限公司 Steel slag semi-flexible composite road surface structure
CN110230240B (en) * 2019-06-21 2022-01-28 河北迁曹高速公路开发有限公司 Steel slag semi-flexible composite pavement structure
CN113123187A (en) * 2021-04-30 2021-07-16 武汉理工大学 Waste concrete fist stone pavement base and preparation method thereof

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Application publication date: 20181116