CN115262307A - Red mud-based light roadbed construction method - Google Patents
Red mud-based light roadbed construction method Download PDFInfo
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- CN115262307A CN115262307A CN202210543881.6A CN202210543881A CN115262307A CN 115262307 A CN115262307 A CN 115262307A CN 202210543881 A CN202210543881 A CN 202210543881A CN 115262307 A CN115262307 A CN 115262307A
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- 238000010276 construction Methods 0.000 title claims abstract description 59
- 239000010410 layer Substances 0.000 claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 23
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000004746 geotextile Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000002985 plastic film Substances 0.000 claims abstract description 6
- 229920006255 plastic film Polymers 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims abstract description 4
- 239000002356 single layer Substances 0.000 claims abstract description 4
- 238000004873 anchoring Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004566 building material Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000011381 foam concrete Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- 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
- E01C3/00—Foundations for pavings
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- 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
- E01C3/00—Foundations for pavings
- E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
-
- 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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- 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
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a construction method of a red mud-based light roadbed, which comprises the following steps: (1) Leveling and compacting a construction site, installing partition templates, and sealing the templates by adopting geotextile or plastic films; (2) Pouring red mud-based light soil in different areas to form a red mud-based light roadbed; the single-layer casting thickness of each casting area is 0.3-1.0m, deformation joints are arranged at intervals of 10-20m in the longitudinal direction and the transverse direction, the step height difference of the top layer is less than 0.2m, and the area is less than or equal to 200m2(ii) a The top of the red mud-based light roadbed is provided with a geogrid and an anti-seepage geomembrane; the geogrid is laid under the anti-seepage geomembrane; the anti-seepage geomembrane and the geogrid are both transversely laid; the top surface and the bottom surface of the red mud-based light roadbed are wrapped by the composite geomembrane; and (3) maintaining the red mud-based light roadbed. The invention provides a construction method of a red mud-based light roadbed, which adopts novel environment-friendly roadbed filling materials to replaceThe traditional road building material realizes the recycling of resources.
Description
Technical Field
The invention relates to the field of solid waste treatment, in particular to a construction method of a red mud-based light roadbed.
Background
The red mud is an industrial solid waste discharged in the production process of alumina, and according to statistics, 1-2 tons of red mud can be generated when 1 ton of alumina is produced, and a large amount of piled red mud occupies land and causes serious hidden danger of environmental pollution, so that research on red mud emission reduction technology and efficient red mud recycling technology are developed, red mud piling and harm are reduced to the maximum extent, and multi-channel and large-scale resource utilization is realized, which becomes one of urgent tasks in the alumina industry.
The red mud can replace the traditional road building materials such as stones, river sand and the like to be used as roadbed fillers, but the pH value of the leachate can reach more than 13 because the pH value of the red mud is 10.5-12.0, so that the application of the red mud in the roadbed fillers is limited; in addition, due to the differences of the properties of the red mud light soil and the cement light soil, such as the difference of mobile phase and workability, the existing light soil roadbed construction method cannot meet the construction requirements of the red mud light roadbed.
Disclosure of Invention
In order to overcome the problem that the existing light soil roadbed construction method cannot meet the construction requirement of the red mud-based light roadbed, the invention aims to provide a red mud-based light roadbed construction method and the invention aims to provide application of the red mud-based light roadbed construction method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a red mud-based light roadbed construction method, which comprises the following steps:
(1) Leveling and compacting a construction site, installing partition templates, and sealing the templates by adopting geotextile or plastic films;
(2) Red mud-based light soil is poured in different areas to form a red mud-based light roadbed; the single-layer casting thickness of each casting area is 0.3-1.0m, deformation joints are arranged at intervals of 10-20m in the longitudinal direction and the transverse direction, the step height difference of the top layer is less than 0.2m, and the area is less than or equal to 200m2；
The top of the red mud-based light roadbed is provided with a geogrid and an anti-seepage geomembrane; the geogrid is laid under the anti-seepage geomembrane; the anti-seepage geomembrane and the geogrid are transversely laid;
the top surface and the bottom surface of the red mud-based light roadbed are wrapped by the composite geomembrane;
(3) And (5) maintaining the red mud-based light roadbed.
Preferably, in the construction method of the red mud-based light roadbed, in the step (1), the compactness of a construction site is more than or equal to 85 percent; further preferably, in the step (1), the compaction degree of the construction site is more than or equal to 90%.
Preferably, in the construction method of the red mud-based light roadbed, in the step (1), a composite wood template with the thickness of 1.5cm is adopted as the template.
Preferably, in the construction method of the red mud-based light roadbed, in the step (2), the construction time of a casting layer in each casting area is less than or equal to 2.5 hours; further preferably, in the step (2), the construction time of the pouring layer in each pouring area is less than or equal to 2h.
Preferably, in the construction method of the red mud-based light roadbed, when the geogrid is laid, U-shaped nails are adopted for anchoring, the longitudinal anchoring interval is 1.6-2.4m, and the transverse anchoring interval is 1.6-2.4m; preferably, when the geogrid is laid, the geogrid is anchored by using U-shaped nails, the longitudinal anchoring distance is 1.8-2.2m, and the transverse anchoring distance is 1.8-2.2m; still further preferably, when the geogrid is laid, the geogrid is anchored by using U-shaped nails, and the longitudinal anchoring interval is 2m and the transverse anchoring interval is 2m.
Preferably, according to the construction method of the red mud-based light roadbed, the plane positions of the geogrids are overlapped and lapped, the lapping width is not less than 5cm, when the geogrids are bound by iron wires at the lapping positions and laid, U-shaped nails are adopted for anchoring, and the longitudinal anchoring interval is 2m, and the horizontal anchoring intervals are anchored by the U-shaped nails; when the impermeable geomembrane is laid, the impermeable geomembrane should be attached to the lower bearing layer as closely as possible.
Preferably, in the construction method of the red mud-based light roadbed, the top and the position 45-55cm below the top of the red mud-based light roadbed are provided with row-buckling type geogrids; further preferably, the top and 48-52cm below the top of the red mud-based light roadbed are provided with row-buckling type geogrids; still further preferably, the top and the position 50cm below the top of the red mud-based light roadbed are provided with row-buckled type geogrids.
Preferably, in the construction method of the red mud-based light roadbed, the tensile strength of the rib ribs of the row-buckle type geogrid is more than or equal to 75kN/m, the longitudinal and transverse nominal elongations are less than or equal to 12%, and the ultimate separation force of the injection molding nodes of the geogrid is more than or equal to 800N; preferably, the longitudinal and transverse rib tensile strength of the row-buckle type geogrid is more than or equal to 78kN/m, the longitudinal and transverse nominal elongation is less than or equal to 11%, and the grid injection molding node ultimate separating force is more than or equal to 900N; still further preferably, the longitudinal and transverse rib tensile strength of the row-buckle type geogrid is more than or equal to 80kN/m, the longitudinal and transverse nominal elongation is less than or equal to 10%, and the grid injection molding node ultimate separation force is more than or equal to 1000N.
Preferably, in the construction method of the red mud-based light roadbed, the composite geomembrane is formed by two pieces of cloth and one membrane; further preferably, the specification of the two cloth-one film is textile mass/film thickness/textile mass =200g/0.5mm/200g; preferably, the reverse filtration geotextile with two cloth membranes and one membrane adopts non-woven geotextile, the equivalent aperture O95 is less than or equal to 0.25mm, the permeability coefficient is more than or equal to 0.08cm/s, and the gradient ratio GR is less than or equal to 4; more preferably, the equivalent pore diameter O95 is less than or equal to 0.21mm, the permeability coefficient is more than or equal to 0.1cm/s, and the gradient ratio GR is less than or equal to 4.
Preferably, in the construction method of the red mud-based light roadbed, the thickness of the deformation joint is 1-2cm; further preferably, the deformation joint is made of EPS foam plastic plates with the thickness of 1-2cm.
Preferably, in the construction method of the red mud-based lightweight roadbed, in the step (2), if the stagnation time exceeds 60min in the pouring process, the pipeline is cleaned in time, and the clean water discharged from the pipeline is used as the standard when the conveying pipe is cleaned.
Preferably, in the red mud-based lightweight roadbed construction method, in the step (3), for cast-in-place red mud-based lightweight soil at a roadbed part, after each layer of cast-in-place red mud-based lightweight soil is finished, a plastic film is adopted for covering, moisturizing and maintaining; and after the last layer is poured, the curing age is not less than 7 days.
The second aspect of the invention provides application of the red mud-based light roadbed construction method in highway construction.
The invention has the beneficial effects that:
the invention provides a construction method of a red mud-based light roadbed, which adopts a novel environment-friendly roadbed filling material to replace a traditional road building material, and realizes resource recycling.
According to the construction method of the red mud-based light roadbed, the problems of alkali seepage and alkali return of the red mud-based light soil are solved by adopting measures such as sealing and wrapping of the anti-seepage geotextile.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The starting materials, reagents or equipment used in the examples are, unless otherwise specified, either conventionally commercially available or may be obtained by methods known in the art. Unless otherwise indicated, the testing or testing methods are conventional in the art.
Example 1
1. Construction site preparation
The site preparation comprises the following steps: leveling a field, cleaning garbage and floating dust in the field, cleaning floating soil in the field so as to avoid influencing the binding force of the foam concrete and the base layer after pouring, and keeping the field to be treated clean, flat, firm and dry; in dry weather, the site is pre-treated by sprinkling water, the site is wetted and sprinkled at least twice to increase the bonding force between the pouring layer and the base layer, but no obvious accumulated water is left on the surface of the base layer to prevent the foam in the foam concrete from breaking due to excessive water absorption of the base layer, before the pouring construction of the red mud-based lightweight soil, the base is ensured to have no soft soil, the base soil layer is subjected to necessary rolling treatment, and the compaction degree is not less than 90%.
2. Module fabrication
The wood formwork in the construction process adopts a composite wood formwork with the thickness of 1.5cm, and a steel pipe or a batten jacking support is adopted for reinforcement after the formwork; light soil is poured in layers and blocks, and the thickness of each layer is controlled to be about 0.5 m; the templates are also installed in a layered and block mode, and the installation amount of each template is determined according to the working surface and the workload of the day; the partition template is firmly installed, and geotextile or plastic film is adopted for sealing in pouring, so that light soil is prevented from leaking along seams; the construction templates are sequentially installed and disassembled layer by layer according to a construction section diagram and a design schedule, and the height of the standard step is 2/3m.
3. Waterproof, anti-seepage and alkali-proof design
The light subgrade top row-buckling type geogrid is laid under an anti-seepage geogrid film, and when the geogrid is laid, U-shaped nails are adopted for anchoring, wherein the longitudinal anchoring interval is 2m, and the transverse anchoring interval is 2m. The plane positions of the geogrids are overlapped and lapped, the lapping width is not less than 5cm, when the geogrids are bound by iron wires at the lapping position and laid, U-shaped nails are adopted for anchoring, the longitudinal anchoring interval is 2m, and the horizontal anchoring interval is also adopted for anchoring by U-shaped nails; when the impermeable geomembrane is laid, the impermeable geomembrane should be attached to the lower bearing layer as closely as possible; the anti-seepage geomembrane and the row-buckling type geogrid are both horizontally laid.
In order to reduce shrinkage cracks caused by humidity and temperature changes and prevent the cracks from being reflected to the road surface, two layers of row-buckling type geogrids are arranged on the top surface of the light soil and 50cm below the top surface, the tensile strength of ribs of the longitudinal and transverse geogrids is required to be more than or equal to 80kN/m, the nominal elongation of the longitudinal and transverse geogrids is required to be less than or equal to 10%, and the ultimate separation force of injection molding nodes of the geogrids is required to be more than or equal to 1000N.
The top surface and the bottom surface of the foamed light soil are wrapped by adopting a composite geomembrane, the composite geomembrane is 'two-cloth one-film', the specification is that the fabric mass/film thickness/fabric mass =200g/0.5mm/200g, the reverse filtration geotextile adopts a non-woven geotextile, and the weight is 300g/m2The equivalent aperture O95 is less than or equal to 0.21mm, the permeability coefficient is more than or equal to 0.1cm/s, and the gradient ratio GR is less than or equal to 3.
4. Cast-in-place of red mud-based light pavement
1) The pouring construction should adopt the pipeline pump sending mode, before the pump sending, should check whether the coupling is fastened, guarantee that the coupling seals firmly and does not reveal.
2) When the cast-in-place red mud-based light roadbed is poured, the vertical distance between a pouring outer pipe and a pouring surface is smaller than 1.0m so as to reduce impact disturbance.
3) In the construction process, the zonal casting is required, the single-layer casting thickness of a single casting area is controlled to be 0.3-1.0m, deformation joints are required to be arranged at intervals of 10-20m in the longitudinal and transverse directions, EPS foam plastic plates with the thickness of 1-2cm are preferably adopted as the deformation joints, the step height difference of the top layer is less than 0.2m, and the area is not more than 200m2Meanwhile, the construction time of the pouring layer in a single pouring area is preferably controlled within 2h.
4) Pouring from one end to the other end along the long axis direction of the pouring area in the pouring process, and if more than one pouring pipe is adopted for pouring, pouring can be started from one end side by side or a diagonal pouring mode is adopted; in the pouring process, when the pouring tube needs to be moved, the pouring tube is required to move back and forth along the placing direction of the pouring tube, and the pouring tube is not required to move left and right; if the pouring tube is required to move left and right, the pouring tube is moved after being lifted out of the surface of the currently poured light soil as much as possible.
5) If the standing time exceeds 60min in the pouring process, the pipeline is cleaned in time, and the clean water discharged from the pipeline is taken as the standard when the conveying pipe is cleaned.
6) When the top layer is poured, the pouring pipe is dragged and moved in a retreating mode to be manually leveled, and the pouring construction of the upper layer can be carried out after the final setting and hardening of the lower pouring layer. Disturbance to the cast-in-place red mud base light roadbed should be reduced in the pouring process, and the cast-in-place red mud base light roadbed should not move freely.
7) The wet density and the fluidity of the cast-in-situ red mud-based light soil need to be detected in real time in the pouring process, and if the wet density and the fluidity do not meet the requirements, the wet density and the fluidity of the cast-in-situ red mud-based light soil need to be adjusted in time.
8) And installing the steel-plastic geogrid and the geomembrane according to design requirements in the pouring process. The lapping width of the geomembrane is not less than 5cm, and the lapping width of the steel-plastic geogrid is not less than 10cm.
9) When the road surface meets heavy rain, heavy rain or long-lasting light rain, the surface of the unhardened cast-in-place red mud-based light roadbed needs to take rain shielding measures.
10 When the temperature is not lower than 20 ℃ in the construction period, the shortest pouring interval time can be controlled according to 24 hours; otherwise, the pouring interval time is not less than 48 hours.
11 When the temperature is lower than 5 ℃, the construction should be stopped; effective heat preservation and maintenance measures should be adopted in low-temperature construction.
5. Maintenance of red mud-based light soil roadbed
1) After pouring of each layer of the cast-in-place red mud-based lightweight roadbed is finished, whole-course moisture preservation and maintenance are adopted before covering the upper layer.
2) For the cast-in-situ red mud-based lightweight soil at the road bed part, a plastic film is adopted for covering, moisturizing and maintaining after each layer of pouring is finished; and after the last layer 1 is poured, the curing age is not less than 7 days.
3) Mechanical and vehicle operation or stacking sundries on the surface of the cast-in-situ red mud-based light roadbed is forbidden.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The construction method of the red mud-based light roadbed is characterized by comprising the following steps:
(1) Leveling and compacting a construction site, installing partition templates, and sealing the templates by adopting geotextile or plastic films;
(2) Pouring red mud-based light soil in different areas to form a red mud-based light roadbed; the single-layer casting thickness of each casting area is 0.3-1.0m, deformation joints are arranged at intervals of 10-20m in the longitudinal direction and the transverse direction, the step height difference of the top layer is less than 0.2m, and the area is less than or equal to 200m2；
The top of the red mud-based light roadbed is provided with a geogrid and an anti-seepage geomembrane; the geogrid is laid under the anti-seepage geomembrane; the anti-seepage geomembrane and the geogrid are both transversely paved;
the top surface and the bottom surface of the red mud-based light roadbed are wrapped by a composite geomembrane;
(3) And (5) maintaining the red mud-based light roadbed.
2. The construction method of the red mud-based lightweight roadbed according to claim 1, wherein in the step (1), the compactness of the construction site is more than or equal to 85%.
3. The construction method of the red mud-based lightweight roadbed according to claim 1, wherein in the step (2), the construction time of the casting layer in each casting area is less than or equal to 2.5 hours.
4. The red mud-based lightweight roadbed construction method according to claim 1, wherein the geogrids are anchored by U-shaped nails when being laid, and the longitudinal anchoring distance is 1.6-2.4m and the transverse anchoring distance is 1.6-2.4m.
5. The construction method of the red mud-based light subgrade according to claim 1, characterized in that row-buckle type geogrids are arranged at the top of the red mud-based light subgrade and 45-55cm below the top.
6. The red mud-based lightweight roadbed construction method according to claim 5, wherein the longitudinal and transverse grid rib tensile strength of the row-buckled type geogrid is more than or equal to 75kN/m, the longitudinal and transverse nominal elongation is less than or equal to 12%, and the grid injection molding node ultimate separation force is more than or equal to 800N.
7. The red mud-based lightweight roadbed construction method according to claim 1, wherein the composite geomembrane is formed by two cloths and one film.
8. The construction method of the red mud-based light roadbed according to claim 7, wherein the reverse filtration geotextile with two cloth membranes and one membrane is non-woven geotextile, the equivalent aperture O95 is less than or equal to 0.25mm, the permeability coefficient is more than or equal to 0.08cm/s, and the gradient ratio GR is less than or equal to 4.
9. The red mud-based lightweight roadbed construction method according to claim 1, wherein the thickness of the deformation joint is 1-2cm.
10. Use of the red mud-based lightweight roadbed construction method according to any one of the claims 1-9 in highway construction.
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| CN202210543881.6A CN115262307A (en) | 2022-05-19 | 2022-05-19 | Red mud-based light roadbed construction method |
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| CN112342854A (en) * | 2020-09-23 | 2021-02-09 | 广东同创科鑫环保有限公司 | Construction method of red mud-based highway pavement base course |
| CN113789691A (en) * | 2021-08-20 | 2021-12-14 | 山东高速基础设施建设有限公司 | Stress-compensated high-toughness asphalt pavement and construction method |
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2022
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| CN112028591A (en) * | 2020-08-20 | 2020-12-04 | 广东同创科鑫环保有限公司 | Construction method of vertical roadbed made of red mud-based cast-in-place lightweight soil |
| CN112144336A (en) * | 2020-09-04 | 2020-12-29 | 广东同创科鑫环保有限公司 | Method for preventing Bayer process red mud-based roadbed external seepage |
| CN112144337A (en) * | 2020-09-04 | 2020-12-29 | 广东同创科鑫环保有限公司 | Cast-in-place construction process for modified red mud-based foam light soil |
| CN112342854A (en) * | 2020-09-23 | 2021-02-09 | 广东同创科鑫环保有限公司 | Construction method of red mud-based highway pavement base course |
| CN113789691A (en) * | 2021-08-20 | 2021-12-14 | 山东高速基础设施建设有限公司 | Stress-compensated high-toughness asphalt pavement and construction method |
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