CN206625101U - A kind of red mud and red mud stabilization gravel Combined base pavement structure - Google Patents
A kind of red mud and red mud stabilization gravel Combined base pavement structure Download PDFInfo
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- CN206625101U CN206625101U CN201720119853.6U CN201720119853U CN206625101U CN 206625101 U CN206625101 U CN 206625101U CN 201720119853 U CN201720119853 U CN 201720119853U CN 206625101 U CN206625101 U CN 206625101U
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Abstract
The utility model discloses a kind of red mud and red mud stabilization gravel Combined base pavement structure, belong to field of road.The pavement structure includes asphalt structure sheaf, changed red mud stabilized macadam base, changed red mud underlayment, and asphalt structure sheaf, changed red mud stabilized macadam base and changed red mud underlayment are laid on soil matrix from top to bottom.The utility model makes full use of red mud to be modified underlayment and red mud stabilized macadam base rigidity complementary advantage, combined by Rational structure, form a kind of novel road surface structure, realize application of the industrial residue red mud in pavement structure basic unit and underlayment, the Combined base structure of use improves the rigidity uniformity of sub-surface, reduce the diseases such as traditional semi-rigid asphalt pavement cracking, purt slurry, while industrial waste red mud recycling is realized, the service life of the structure of bituminous paving is improved.
Description
Technical field
Field of road is the utility model is related to, specifically a kind of red mud and red mud stabilization gravel Combined base
Pavement structure.
Background technology
The contaminative waste residue that red mud is discharged when being aluminium industry extraction aluminum oxide, average often produces 1 ton of aluminum oxide, attached
Band produces 1.0~2.0 tons of red muds.The whole world about 70,000,000 tons of caused red mud every year, caused red mud is 3000 every year in China
More than ten thousand tons.Substantial amounts of red mud sufficiently effective can not be utilized at present, and the stockyard of large area can only be relied on to stack, and be occupied a large amount of
Soil, serious pollution is also caused to environment.China currently carries out highway construction, it is necessary to material of largely building the road on a large scale
Material.But as river course and environmental improvement are increasingly paid attention in various regions in recent years, large area forbids excavating Tu Chang, gravel and mountain area
The road-making material such as building stones, many area soil, sand, stone is extremely short, and cost of building the road is significantly increased.Using red mud as each structure of road
The main material of layer, while solving some areas road-making material shortage problem, minimizing and recycling to red mud
Also will be important breakthrough.
Although had in lot of documents using red mud as the technology that road basement material is applied it is disclosed, due to
Or red mud is filling roadbed can not to meet engineering objective requirement, or can not meet environmental protection index requirement, its Pavement Design does not have yet
There are corresponding design parameter, index to refer to and follow, real popularization and application is difficult in real road process of deployment.
Moreover, in the prior art yet without red mud and red mud stabilization gravel as asphalt pavement structure basic unit and the complete paving of underlayment
Assembling structure, constrain minimizing and the recycling of red mud.
The content of the invention
Technical assignment of the present utility model is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of red mud and red mud are stablized broken
Stone combined basic unit's pavement structure, the pavement structure make full use of red mud modification underlayment and red mud stabilized macadam base rigidity mutual
Benefit advantage, is combined by Rational structure, realizes application of the industrial residue red mud in road surface structure basic unit and underlayment,
The Combined base structure of use improves the rigidity uniformity of sub-surface, reduces traditional semi-rigid asphalt pavement and opens
Split, purt slurry etc. disease, while industrial waste red mud recycling is realized, improve asphalt pavement structure use the longevity
Life.
Red mud described in the utility model refers to the contaminative waste residue discharged during aluminium industry extraction aluminum oxide, it is generally the case that
For the water content of stockyard red mud more than 30%, simple considers that red mud is mainly made up of fines, 10 μm from Geotechnical Engineering angle
~100 μm of grain group contents have more than 60% and are similar to viscous soil characteristics, and high dispersive colloidal is presented in red mud under nature
State, its high-moisture and low-density make its void ratio be up to 1.85~2.40, and this is also extremely rare, but red for mud
The composition and the origin cause of formation of mud are entirely different with mud, and property also differs greatly.It is therefore contemplated that red mud is a kind of low severe, height
Void ratio, high-consistency, high ph-values, in strong basicity category high liquid limit clay.
Technical assignment of the present utility model is realized in the following manner：A kind of red mud and red mud stabilization gravel combined type base
Layer pavement structure, is characterized in including asphalt structure sheaf, changed red mud stabilized macadam base, changed red mud underlayment,
Asphalt structure sheaf, changed red mud stabilized macadam base and changed red mud underlayment are laid on soil matrix from top to bottom.
In order to ensure that changed red mud underlayment has good pavement performance, can be filled in the red mud of changed red mud underlayment
Modifying agent.Preferably, the modifying agent is formed by ardealite, slag micropowder and cement mixing, ardealite, slag micropowder, water
Mud, the mass ratio of red mud are 1-2:20-25:70-80:500.
The thickness of changed red mud underlayment is preferably 15cm~20cm.
In order to ensure that changed red mud stabilized macadam base has good environmental-protecting performance, its strong basicity is reduced, can changed
Modifying agent is filled in the red mud of property red mud stabilized macadam base.Preferably, the modifying agent is by ardealite, slag micropowder and water
Mud mixes, and ardealite, slag micropowder, cement, red mud, the mass ratio of rubble are 0.3-0.5:5-7:50-70:110-130:
940。
Further, the macadam gradating scope of changed red mud stabilized macadam base, standard size is passed through with each particle diameter mineral aggregate
Sieve aperture percentage, it is preferably：
26.5mm, 95%~100%；19mm, 47%~67%；9.5mm, 23%~33%；4.75mm, 12%~
22%；2.36mm, 7%~17%；0.6mm, 0%~7%；0.075mm, 0%~6%.
The thickness of changed red mud stabilized macadam base is preferably 30~40cm, preferably divides two layers of construction, thickness in monolayer model
Enclose 15cm~20cm.
In changed red mud stabilized macadam base and changed red mud underlayment, the ardealite is used for the alkalescence for reducing red mud；
The slag micropowder is used for the strength character for exciting red mud compound；Cement is used to form strength stability steady in a long-term.Cause
This, above-mentioned modifying agent is added in red mud, can effectively meet the stability of roadbase, improves the length of Pavement Base Structure
Phase performance.
The asphalt structure sheaf can be selected any one asphalt structure sheaf in the prior art, but in order to
Changed red mud stabilized macadam base preferably coordinates, and the utility model asphalt structure sheaf is preferably by asphalt uplayer, drip
Blue or green cutting optimal, macrovoid drainage asphalt metalling, heated bitumen crushed stone sealing form, asphalt structure sheaf by pitch above
Layer, pitch cutting optimal, macrovoid drainage asphalt metalling, heated bitumen crushed stone sealing be laid on from top to bottom changed red mud stablize it is broken
On ground mass layer.
Asphalt uplayer is preferably SMA-13 or AC-13, uses pitch PG grades as PG76-22, thickness 3-5cm；
Pitch cutting optimal is preferably AC-20, uses pitch PG grades as PG64-22 or PG76-22, thickness 5-7cm.
Heated bitumen crushed stone sealing is preferably PG64-22 or PG76-22 using pitch PG grades
Preferably, macrovoid drainage asphalt metalling uses pitch PG grades as PG64-22 or PG76-22, hole is designed
Gap rate is 12%~16%, thickness 10-20cm, when macrovoid drainage asphalt rubble uses pitch PG grades as PG64-22, heat
Mixing asphalt outer need to mix 0.5~1.5% lignin fibre.
The outer volume of lignin fibre is preferably 1%.
The macadam gradating scope of macrovoid drainage asphalt metalling, standard size sieve aperture percentage is passed through with each particle diameter mineral aggregate
Meter, it is preferably：
31.5mm, 93%~100%；19mm, 60%~75%；9.5mm, 25%~38%；1.18mm, 0~10%；
0.075mm, 0~3%.
Compared with prior art, red mud and red mud stabilization gravel Combined base pavement structure of the present utility model have with
Under highlightedly beneficial effect：
(1) particular modification agent is added, the long-time stability of road can be effectively improved, reduce the contaminative of roadbed.Add
After above-mentioned Special modifier, the detection Leaching of Heavy Metals concentration total mercury index of changed red mud indoor sample<0.001mg/L, six
Valency chromium index<0.05mg/L, meet the class of underground water III control standard so that the pavement structure ensure red mud as roadbase with
Underlayment can meet engineering objective requirement, and and can meets environmental requirement, realize minimizing, the recycling profit of industrial residue red mud
With；
(2) red mud and red mud stabilization gravel Combined base structure improves sub-surface and the rigidity of underlayment is uniform
Property, the diseases such as cracking, purt slurry are prevented, improve the structure service life of semi-rigid type base.
(3) pavement structure is combined using drainage crack resistance bituminous texture layer, prevents Pavement Structure Damage by Water, is extended
Pavement structure overall structure service life.
Brief description of the drawings
Accompanying drawing 1 is red mud and red mud stabilization gravel Combined base pavement structure.
Embodiment
With reference to Figure of description with specific embodiment to red mud of the present utility model and red mud stabilization gravel Combined base
Pavement structure is described in detail below.
【Embodiment】
As shown in Figure 1, the red mud of the present embodiment and red mud stabilization gravel Combined base pavement structure：4cmSMA-13
Asphalt 1+6cmAC-20 asphalt 2+12cm macrovoid drainage asphalt rubble 3+ heated bitumen crushed stone sealings 4+18cm
Basic unit 5+18cm changed red mud stabilization gravels are gone to a grassroots level 6+20cm changed red mud underlayment 7+ soil matrixs on changed red mud stabilization gravel
8。
1st, changed red mud underlayment 7
Using red mud as main pavement material, using the mixture of ardealite, slag micropowder and cement as modifying agent.
It is 1.5 by mass ratio:22:75:After 500 ardealite, slag micropowder, cement, red mud are well mixed, in soil matrix 8
The upper laying (one layer of construction) for carrying out changed red mud underlayment 7.
2nd, changed red mud stabilized macadam base (go to a grassroots level basic unit on 6, changed red mud stabilization gravel by changed red mud stabilization gravel
5)
Standard size sieve aperture percentage, macadam gradating scope are passed through with each particle diameter mineral aggregate：
26.5mm 97%；19mm, 58%；9.5mm, 30%；4.75mm 17%；2.36mm 13%；0.6mm, 4%；
0.075mm, 3%.
Cementitious matter：Using red mud as major ingredient, mixed using the mixture of ardealite, slag micropowder and cement as modifying agent,
Ardealite, slag micropowder, cement, red mud, the mass ratio of rubble are 0.4:6:60:120:940.
Changed red mud stabilized macadam base gross thickness is 36cm, point two layers of construction.
3rd, heated bitumen crushed stone sealing 4
Heated bitumen crushed stone sealing uses pitch PG grades as PG64-22.
4th, macrovoid drainage asphalt rubble 3
Pitch PG grade PG76-22, it is 1% lignin fibre that hot-mix asphalt mixture mixes mass percent outside；
It is 15% to design porosity；
It is by standard size sieve aperture percentage, the grading of rubble with each particle diameter mineral aggregate：
31.5mm 95%；19mm, 70%；9.5mm, 30%；1.18mm 5%；0.075mm, 2%.
5th, pitch cutting optimal 2
Using AC-20 compounds, pitch PG grades are PG64-22.
6th, asphalt uplayer 1
Using SMA-13 compounds, pitch PG grades are PG76-22.
【Experimental example】
Using roadbed red mud and the above-mentioned changed red mud underlayment added with modifying agent as experimental subjects, major project and environment
Index contrasts：
Claims (6)
1. a kind of red mud and red mud stabilization gravel Combined base pavement structure, it is characterised in that：Including asphalt structure
Layer, changed red mud stabilized macadam base, changed red mud underlayment, asphalt structure sheaf, changed red mud stabilized macadam base
It is laid on from top to bottom on soil matrix with changed red mud underlayment.
2. red mud according to claim 1 and red mud stabilization gravel Combined base pavement structure, it is characterised in that：It is modified
Thickness range 15cm~20cm of red mud underlayment.
3. red mud according to claim 1 and red mud stabilization gravel Combined base pavement structure, it is characterised in that：It is modified
The thickness range of red mud stabilized macadam base is 30~40cm, point two layers of construction, thickness in monolayer scope 15cm~20cm.
4. red mud according to claim 1 and red mud stabilization gravel Combined base pavement structure, it is characterised in that：Pitch
Mixture structure layer is made up of asphalt uplayer, pitch cutting optimal, macrovoid drainage asphalt metalling, heated bitumen crushed stone sealing,
Asphalt structure sheaf by asphalt uplayer, pitch cutting optimal, macrovoid drainage asphalt metalling, heated bitumen crushed stone sealing from
It is laid under above on changed red mud stabilized macadam base.
5. red mud according to claim 4 and red mud stabilization gravel Combined base pavement structure, it is characterised in that：Pitch
Upper layer is SMA-13 or AC-13, uses pitch PG grades as PG76-22, thickness 3-5cm；
Pitch cutting optimal is AC-20, uses pitch PG grades as PG64-22 or PG76-22, thickness 5-7cm.
6. red mud according to claim 4 and red mud stabilization gravel Combined base pavement structure, it is characterised in that：Macropore
Gap drainage asphalt metalling uses pitch PG grades as PG64-22 or PG76-22, and design porosity is 12%~16%, thickness
For 10-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119853.6U CN206625101U (en) | 2017-02-09 | 2017-02-09 | A kind of red mud and red mud stabilization gravel Combined base pavement structure |
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|---|---|---|---|
| CN201720119853.6U CN206625101U (en) | 2017-02-09 | 2017-02-09 | A kind of red mud and red mud stabilization gravel Combined base pavement structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676999A (en) * | 2017-02-09 | 2017-05-17 | 山东省交通科学研究院 | Red mud and red mud stabilized macadam combined type base pavement structure |
| CN111153664A (en) * | 2020-01-13 | 2020-05-15 | 北京工业大学 | Road base material produced by stabilizing waste concrete building waste aggregate with lime red mud |
| CN114016342A (en) * | 2021-09-24 | 2022-02-08 | 山东高速集团有限公司 | Roadbed and pavement balance design method and structure |
-
2017
- 2017-02-09 CN CN201720119853.6U patent/CN206625101U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676999A (en) * | 2017-02-09 | 2017-05-17 | 山东省交通科学研究院 | Red mud and red mud stabilized macadam combined type base pavement structure |
| CN106676999B (en) * | 2017-02-09 | 2022-06-14 | 山东省交通科学研究院 | Red mud and broken stone combination formula basic unit road surface structure is stabilized to red mud |
| CN111153664A (en) * | 2020-01-13 | 2020-05-15 | 北京工业大学 | Road base material produced by stabilizing waste concrete building waste aggregate with lime red mud |
| CN111153664B (en) * | 2020-01-13 | 2022-01-28 | 北京工业大学 | Road base material produced by stabilizing waste concrete building waste aggregate with lime red mud |
| CN114016342A (en) * | 2021-09-24 | 2022-02-08 | 山东高速集团有限公司 | Roadbed and pavement balance design method and structure |
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