CN209144596U - A kind of red mud base light filler expressway extension splicing construction - Google Patents
A kind of red mud base light filler expressway extension splicing construction Download PDFInfo
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- CN209144596U CN209144596U CN201821612488.3U CN201821612488U CN209144596U CN 209144596 U CN209144596 U CN 209144596U CN 201821612488 U CN201821612488 U CN 201821612488U CN 209144596 U CN209144596 U CN 209144596U
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- red mud
- light filler
- barricade
- road
- mud base
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a kind of red mud base light filler expressway extension splicing constructions, belong to trade waste resource utilization and field of road.The structure includes original road structure and splicing step, its main feature is that being provided with barricade on the outside of enlarging road, red mud base light filler has been filled between barricade and splicing step, new road laying of roadway is between the barricade and splicing step of red mud base light filler top surface.Compared with traditional road is extended and spells wide technology, backfill material own wt is light, backfill position self-compaction exempts to roll, easily construct, to effectively reduce the relative settlement of the old and new's road structure, and the soil occupied by the two-way outside slope of spelling broad way base can be saved, a large amount of consumption simultaneously have resource-effective and environmentally protective technical advantage, there is good application value with using red mud and other slags.
Description
Technical field
The utility model relates to trade waste resource utilization and field of road, specifically a kind of red mud base
Light filler expressway extension splicing construction.
Background technique
With the fast development of economic society and the growth of the volume of traffic, the far super design of the actual traffic amount of many roads
The volume of traffic, service level decline, safety accident increase, and road reconstruction and extension project has been extremely urgent.The reorganization and expansion of road needs
Old road spell wide, this does not only take up a large amount of soils, influences use the function in original both sides of the road soil, and newly road is filled out
It builds and needs to consume a large amount of cubic metre of earth and stone, cause the waste of land resource.What red mud was discharged when being aluminium industry extraction aluminium oxide consolidates
Body waste residue, every 1 ton of aluminium oxide of production, which can be attached to, generates 1.0~2.0 tons of red muds.Red mud is mainly stored up using dry dam form at present,
A large amount of soil is occupied, the risk of environmental pollution and security risk is also caused to neighboring area.Red mud is light with density, shrinks
The advantages that stability is good, retentiveness is strong, but there is also the application problems such as alkaline high, intensity is low, water stability is poor, can not directly use
In engineering construction.Therefore, width is spelled there are effective consumption of problem and red mud to expressway extension and utilizes progress system research right and wrong
It is often urgent and necessary.
Summary of the invention
The technical assignment of the utility model is in view of the above shortcomings of the prior art, to provide a kind of red mud Ji Qingzhitianliaodao
Splicing construction is extended on road, by technology complementation between old road function step, light filler, thin-walled barricade three with cooperate with work
With, be collectively formed save space, compatibility of deformation expressway extension splicing overall structure.
The technical assignment of the utility model is realized in the following manner: red mud base light filler expressway extension splicing knot
Structure, including original road structure and splicing step, its main feature is that be provided with barricade on the outside of enlarging road, barricade and splicing step it
Between filled red mud base light filler, new road laying of roadway is between the barricade and splicing step of red mud base light filler top surface.
Original road structure includes surface layer, base, roadbed, roadbed, and it is preferably 15 that facing sections, which splice step width,
~20cm, substrate portion splicing step width is preferably 30~40cm, roadbed part (rendzinas or two-ash soil) splice step and
It is preferably 50~100cm that step width is spliced in roadbed part.
Facing sections, substrate portion and roadbed part step depth and original road structure layer consistency of thickness, roadbed part
Step thicknesses are 50~80cm.
Barricade preferably uses thin-wall construction, can be spaced 10~15m setting reinforcement floor.The width of barricade is preferably 30~
50cm。
The settable retaining wall foundation in barricade lower end, the thickness of retaining wall foundation is preferably 15-45cm, can be located at original ground with
Under, inner edge is flushed with reinforcement floor lower edge, the outside metope 20-40cm of outer back gauge barricade.
The reinforcement floor is triangular in shape, vertical with barricade, and is embedded in the light filler of red mud base.
Barricade thin-wall construction and/or the preferred Reinforced Concrete Materials of reinforcement floor are made, and strength grade of concrete is not small
In 30MPa, seepage-resistant grade is not less than P8, and freeze proof grade is not less than F200.
In order to provide enough supports for the road surface Xin Lu, the Composite resilient modulus at the top of red mud base light filler be should be greater than
The differential settlement of 50MPa, the old and new's road are not more than 0.5%.
Preferably, the fluidity of red mud base light filler is 14~18s, density is less than 1.05g/cm3, no lateral confinement intensity
Not less than 1200kPa.
In order to make red mud base light filler meet above-mentioned performance requirement, the light filler of red mud base is preferably by dry powder material component
Mixed in proportion with water with mixing and stirring, the mass ratio of dry powder material component and water is 1:(0.65~0.75),
The raw material of the following weight proportion of dry powder material group subpackage:
The weight proportion of each raw material is preferred in dry powder material component are as follows:
Wherein, zeolite powder or diatomite, preferably diatomite can be used in stabilizer, and fineness is not less than 200 mesh, and loss on ignition is not
Greater than 0.5%；
Zinc stearate, calcium stearate or ethylene bis stearamide (EBS), preferably ethylene stearic bicine diester can be used in dispersing agent
Amine (EBS), fineness are not less than 325 mesh, and fusing point is 140~145 DEG C.
The utility model is extended in splicing construction, and the light filler of red mud base is using red mud as main carriers, a part of high temperature silicon
Powder and the adsorbed low price cation of red mud particle surface occur exchange interaction and form crumb structure, and another part high temperature silicon powder is then
It fills red mud and II type portland cement inter-granular porosity forms colloform texture.With the hydration reaction of II type portland cement,
Gelinite is constantly grown, and promotes hydrated product to overlap to form netted knot if the porous structure and adsorptivity of stabilizer (such as diatomite)
Structure keeps cementing entirety evenly dispersed using the viscosity reduction of dispersing agent (such as ethylene bis stearamide), dispersion effect at the same time,
Guarantee not generating isolation while filler mobile performance, it is low and with some strength to ultimately form a kind of homogeneous, shrinking percentage
Light filler.
Red mud base light filler is preferably laminated pouring, every layer of casting with a thickness of 30~60cm, such as 40cm, 50cm；
Every layer is poured, and next layer of casting is carried out after health 48h.When daily minimal tcmperature is lower than 0 DEG C, casting and constructing must not be carried out.
Red mud base light filler expressway extension joining method, its main feature is that the following steps are included:
Setting splicing step after original road structure excavates；
Barricade is set on the outside of enlarging road；
Red mud base light filler is filled between barricade and splicing step；
The road surface making Xin Lu between the barricade and splicing step of red mud base light filler top surface.
Splice the size requirement of step, the performance requirement of each section, and splicing step and barricade, red mud base light filler
Between positional relationship etc. corresponding technical solution in above-mentioned splicing construction can be used.
A kind of red mud base light filler expressway extension splicing construction and method of the utility model, have compared with prior art
Have it is following prominent the utility model has the advantages that
(1) structure follows road structure mechanics and principle of deformation consistency, passes through structural step, light filler, thin-walled
Interaction between barricade three makes the old and new's road form overall structure, solves differential settlement in extension project, longitudinal direction
The problems such as cracking, long-time stability.
(2) 80% or more industrial solid waste red mud quality accounting in light filler used in this method, utilization rate is high, can
Realize recycling, the scale regeneration of red mud；Lightweight backfilling material good fluidity, shrinkage are low, are easy to site operation；Gently
Matter packing density is low, can lower road self weight and the active earth pressure to barricade, to reduce the sectional dimension of barricade.
(3) structure is the newly-built lateral retaining structure of road with thin-walled barricade, and the soil of roadbed slope occupancy is greatly decreased
Range, to improve both sides of the road space utilization rate, especially suitable for original both sides of the road because there are sensitive spot, building, industrial and mineral,
Situations such as town road and apply under conditions of being limited by land used.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model embodiment red mud base light filler expressway extension splicing construction；
Attached drawing 2 is the cross-sectional view of structural schematic diagram A-A shown in Fig. 1.
Specific embodiment
It is spelled referring to Figure of description with a kind of red mud base light filler expressway extension of the specific embodiment to the utility model
Binding structure and method are described in detail below.
[embodiment]
As shown in attached drawing 1,2, the red mud base light filler expressway extension splicing construction of the present embodiment is by old road road 1, gear
Wall 2, red mud base light filler 3, the road surface Xin Lu 4 are constituted.
There is splicing step in the side to be extended of old road road 1.Barricade 2 is mounted on the outside of the side to be extended of old road road 1.Red mud base
Light filler 3 is filled between barricade 2 and splicing step.Barricade 2 of 4 making of the road surface Xin Lu in 3 top surface of red mud base light filler
Between splicing step.
The surface layer structure of the old road road 1 is upper layer (4cm SMA-13), middle surface layer (5cm AC-20), cutting optimal
(6cm AC-25)；Base layer structure is upper base (18cm cement stabilized macadam), goes to a grassroots level (18cm cement stabilized macadam)；Roadbed
Structure is 30cm lime stabilized soil, and following roadbed position is 200cm plain fill.
Step is respectively set according to the three-decker thickness degree on old road in surface layer structure, and the height of step is followed successively by 4cm, 5cm
And 6cm, every layer of step width are 15cm；Step, every layer of platform is respectively set according to the upper and lower groundwork thickness on old road in base layer structure
Rank height is 18cm, and width is 35cm；Roadbed structural ledge height is 30cm, width 50cm；Roadbed part step height
For 50cm, width 50cm.
2 shingle nail of barricade uses thin-wall construction, and the retaining wall foundation 2.2 of lower end is embedded in original ground or less.Barricade 2 is cut
Face width dimensions are 40cm, highly to designed elevation, are spaced 15m and reinforcement floor 2.1 is arranged.Reinforcement floor 2.1 is triangular in shape, with
Barricade 2 is vertical, and is embedded in red mud base light filler 3.Retaining wall foundation 2.2 with a thickness of 30cm, inner edge and reinforcement floor
2.1 lower edges flush, the outside metope 25cm of outer back gauge barricade 2.
Construction procedure is as follows:
1, setting structure step
Step is respectively set according to the three-decker thickness degree on old road in surface layer structure, and the height of step is followed successively by 4cm, 5cm
And 6cm, every layer of step width are 15cm；Step, every layer of platform is respectively set according to the upper and lower groundwork thickness on old road in base layer structure
Rank height is 18cm, and width is 35cm；Roadbed structural ledge height is 30cm, width 50cm；Roadbed part step height
For 50cm, width 50cm.
2, light thin-wall barricade
2 shingle nail of barricade uses thin-wall construction, and the retaining wall foundation 2.2 of lower end is embedded in original ground or less.Barricade 2 is cut
Face width dimensions are 40cm, highly to designed elevation, are spaced 15m and reinforcement floor 2.1 is arranged.Reinforcement floor 2.1 is triangular in shape, with
Barricade 2 is vertical, and is embedded in red mud base light filler 3.Retaining wall foundation 2.2 with a thickness of 30cm, inner edge and reinforcement floor
2.1 lower edges flush, the outside metope 25cm of outer back gauge barricade 2.
Barricade 2, reinforcement floor 2.1 are reinforced concrete structure, strength grade of concrete 30MPa, and seepage-resistant grade is
P8, freeze proof grade are F200.Wet curing is answered after construction, the expired 28d of health is set through detection intensity and endurance quality satisfaction
After meter requires, the backfill construction of light filler is carried out.
3, red mud base light filler
To reduce red mud alkalinity, intensity and water stability are improved, construction working performance is improved, it is carried out at technique improvement
Reason.Mass ratio is red mud, high temperature silicon powder, II type portland cement, the diatomite, ethylene stearic bicine diester of 84:9:6.5:0.4:0.1
Amine is sufficiently mixed to obtain dry powder material, and dry powder material and water are sufficiently mixed with the mass ratio of 1:0.68 again, are obtained for backfill
Red mud base light filler.
The fluidity of red mud base light filler is 14.8s, density 1.01g/cm3, no lateral confinement intensity is 1320kPa.
Diatomite, fineness are 200 mesh, loss on ignition 0.45%.
Ethylene bis stearamide (EBS), fineness are 325 mesh, and fusing point is 143 DEG C.
4, the backfill of red mud base light filler 3 construction
By 3 laminated pouring of red mud base light filler when backfill construction, every layer of casting with a thickness of 50cm.When casting, by returning
It fills out around position and is poured to centre, guaranteed without dead angle.Every layer is poured, and next layer of casting is carried out after health 48h.
5,4 making of the road surface Xin Lu
After red mud base light filler the last layer health, Composite resilient modulus test is carried out in its top surface, result is
59MPa meets laying of roadway requirement.With conventional paving method red mud base light filler top surface barricade 2 and splicing step it
Between the road surface making Xin Lu 4.
6, structure overall inspection
After the completion of the construction of road overall structure, the differential settlement of the old and new's road is 0.23%.Structure integrally has good rigid
Degree, stability and compatible deformation ability.
[comparative example]
The enlarging splicing construction obtained using above-described embodiment is test case, with the slope knot that bankets of conventional road enlarging splicing
Structure 5 is comparative example one；Using the conventional enlarging structure banketed instead of red mud base light filler described in embodiment one as comparative example two into
Row test comparison, test effect see the table below:
According to test effect as can be seen that the utility model red mud base light filler expressway extension splicing construction intensity,
Settlement after construction difference etc. is obviously improved compared with the prior art.
Claims (6)
1. a kind of red mud base light filler expressway extension splicing construction, including original road structure and splicing step, feature exist
In: it is provided with barricade on the outside of enlarging road, has filled red mud base light filler, new road laying of roadway between barricade and splicing step
Between the barricade and splicing step of red mud base light filler top surface.
2. red mud base light filler expressway extension splicing construction according to claim 1, it is characterised in that: original road knot
Structure includes surface layer, base, roadbed, roadbed, and it is 15~20cm that facing sections, which splice step width, and substrate portion splices step width
For 30~40cm, step is spliced in roadbed part, roadbed part splicing step width is 50~100cm.
3. red mud base light filler expressway extension splicing construction according to claim 2, it is characterised in that: facing sections,
Substrate portion and roadbed part step depth and original road structure layer consistency of thickness, roadbed part step thicknesses are 50~
80cm。
4. red mud base light filler expressway extension splicing construction according to claim 1, it is characterised in that: barricade is using thin
Reinforcement floor is arranged in wall construction, 10~15m of interval.
5. red mud base light filler expressway extension splicing construction according to claim 4, it is characterised in that: barricade lower end is set
Be equipped with retaining wall foundation, retaining wall foundation with a thickness of 15-45cm, inner edge is flushed with reinforcement floor lower edge, outer back gauge barricade
Outside metope 20-40cm.
6. red mud base light filler expressway extension splicing construction according to claim 4 or 5, it is characterised in that: ribbed stiffener
Plate is triangular in shape, vertical with barricade, and is embedded in the light filler of red mud base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821612488.3U CN209144596U (en) | 2018-09-30 | 2018-09-30 | A kind of red mud base light filler expressway extension splicing construction |
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|---|---|---|---|
| CN201821612488.3U CN209144596U (en) | 2018-09-30 | 2018-09-30 | A kind of red mud base light filler expressway extension splicing construction |
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| CN209144596U true CN209144596U (en) | 2019-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951337A (en) * | 2018-09-30 | 2018-12-07 | 山东省交通科学研究院 | A kind of red mud base light filler expressway extension splicing construction and method |
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2018
- 2018-09-30 CN CN201821612488.3U patent/CN209144596U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951337A (en) * | 2018-09-30 | 2018-12-07 | 山东省交通科学研究院 | A kind of red mud base light filler expressway extension splicing construction and method |
| CN108951337B (en) * | 2018-09-30 | 2023-08-22 | 山东省交通科学研究院 | Red mud-based light filler road extension splicing structure and method |
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