CN106587887B - Roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay - Google Patents
Roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay Download PDFInfo
- Publication number
- CN106587887B CN106587887B CN201611205097.5A CN201611205097A CN106587887B CN 106587887 B CN106587887 B CN 106587887B CN 201611205097 A CN201611205097 A CN 201611205097A CN 106587887 B CN106587887 B CN 106587887B
- Authority
- CN
- China
- Prior art keywords
- tailings
- tail
- clay
- tail clay
- roadbed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C04B28/18—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 mixtures of the silica-lime type
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention discloses roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay, it is by the way that by tailings, tail clay and curing agent, shelving is obtained under field conditions (factors) after mixing, wherein curing agent is the alkaline residue type composite base material mixed by portland cement and alkaline residue.In roadbed subbase course material of the invention, tailings plays skeleton function, and the hyrate of alkaline residue and cement not only can be with filling pore again with coagulation, to improve the intensity and water repelling property of mixture；After measured: the unconfined compressive strength after conserving 7d and 28d under the conditions of standard curing respectively reaches 877.6~1272.9kPa, 2082.4~3376.3kPa, and the intensity after immersion for 24 hours reaches 1537.3~2646.3kPa, i.e. the steady coefficient of water is 0.70~0.78；It can be used as road subbase course material, have the characteristics that protect environment, economize on resources.
Description
Technical field
The present invention relates to roadbed subbase course material and its preparation methods made from a kind of solidification tailings and tail clay, belong to soil
Wood engineering material and Geotechnical Engineering field.
Background technique
Highway can be divided into road surface, base, underlayment and bed course according to structure sheaf.Underlayment is as under Asphalt Pavement Base
The auxiliary layer of making under the secondary supporting course of making or cement concrete pavement base, generally using cracking performance of aggregate stabilized by cement class or
Cement, lime and flyash comprehensive stability gather materials class design scheme.Currently used road subbase course material belongs to resource mostly
Property material, such as rubble, cement and lime etc..Exploiting raw material, energy consumption is high, aggravates the destruction of environment, and process raw material meeting
Further pollute environment.So seeking safe and reliable one kind, environmental protection and economy and the subbase course material of technological innovation is vast work
Journey participant's urgent problem to be solved.
Tail clay is the trade waste that mine washup factory Sui Shui is discharged together, and moisture content is high, and sticky content is also very
Height causes its bad hydraulic permeability, excess pore water pressure to be difficult to dissipate, consolidation time is long, mechanical strength is low.Tailing accumulation is often met
The problems such as unsmooth, the deposition beach gradient is slow, stability is poor is seeped to difficult, dam body row is filled.Processing side of the China to tail clay at present
Formula has upper reaches method+vortex method, disposable method mixing paste soma heap method of building a dam.Upper reaches method+vortex method is suitable for being difficult to alluviation method heap
The partially thin tailing of the granularity on dam, but it is relatively limited to the improvement of the stability of tail clay fill dam；The disposable method of building a dam is well suited to
Completely can not heap dam superfine granularity tailing, but this method capital expenditure is excessively high；The dry heap method of lotion is with being well suited to short of rain, water shortage
Area, but the processing mode operating cost is excessively high, and is not suitable for area of heavy rainfull.In short, there is no fine for existing technology
Processing tail clay, along with some mining units disorderly row leave about.For example, some mining units tail clay is directly discharged into it is small-sized
Lake or discarded pond, but tail clay moisture content is far longer than its liquid limit, which forms the siltation pond of large area and nothings
People keeps an eye on；Further, since tail clay pervasion is poor, discharging consolidation is slow, mechanical strength is low, and the rear surface being exposed to the sun will form one layer and compare
The crust layer of thin cracking, and under crust layer it is still the tail clay much higher than liquid limit, people can not walk on its surface, to surrounding
Environment causes very big security risk.Also some mining units are directly discharged into river, these tail clays deposit throughout the year must in river
It so will affect surrounding water quality, and hinder flood discharge channel and thoroughfare, ability is irrigated in the water drainage for having seriously affected river.
Currently, the research that China comprehensively utilizes tail clay is deep not enough, once there is scholar to add into tail clay with water
Curing materials based on mud, and a large amount of rubbles are added and are stirred mixing, to change the property of tail clay, mixing that treated
Material can be used for the hardening on mine factory road surface.The tail clay that this method is not only handled is seldom, and has more rubble due to being added,
So that cost is very high, it is difficult to be promoted.Therefore, a kind of suitable curing agent is found, the property of tail clay can be improved, makes it more
Reasonable utilization not only can solve tail clay unrest emission problem, moreover it is possible to trade waste be made to get utilization in this way.
Tailings is exactly dressing plant under the conditions of specific economic technology, by grinde ore, chooses and discharges after useful component
Waste.According to statistics, nearly 8,000,000,000 tons of tailing amount of China's stockpiling at present, these tailings are piled up in Tailings Dam throughout the year, are not only consumed
Expense fund builds library, occupies the soil of large area, and may induce a variety of geological disasters.Alkaline residue is arranged in ammonia-soda process alkali producing process
The waste residue put, the characteristics of according to ammonia-soda process soda manufacture technique, every production 1t soda ash will discharge the alkaline residue of 0.3t, these alkali outward
Any accumulation and discharge of slag can cause serious pollution to environment and water body.
Summary of the invention
The present invention be to avoid above-mentioned the deficiencies in the prior art in place of, a kind of solidification tailings and road made from tail clay are provided
Based underlayment material and its preparation method, it is intended to using cheap industrial waste tailings, alkaline residue and a small amount of cement to tail clay
It is handled, the treatment of wastes with processes of wastes against one another, discarded tail clay is modified to roadbed subbase course material, it both can be to avoid the occupancy of tailings and alkaline residue
Land can solve the environmental problem due to caused by the tail clay disorderly discharged again.
The present invention solves technical problem and adopts the following technical scheme that
A kind of roadbed subbase course material made from solidification tailings and tail clay, it is characterised in that: the roadbed underlayment material
The raw material of material includes tail clay, tailings and curing agent；The curing agent is the alkaline residue mixed by portland cement and alkaline residue
Type composite base material；The tailings quality is the 60~75% of tailings and tail clay gross mass；The tail clay quality be tailings and
The 25~40% of tail clay gross mass；The curing agent quality is the 15~25% of tailings and tail clay gross mass.
In the curing agent, the mass ratio of portland cement and alkaline residue is 1:1.
SiO in the chemical component of the tailings265%~75% is accounted for, high-silicon type tailing is belonged to.Its main component is quartz, is contained
There are a small amount of hornblend, biotite, calcite and dolomite etc..
The partial size of the tailings be fine particles, partial size greater than 0.25mm granular mass account for tailings gross mass 43.6~
52.0%, granular mass of the partial size greater than 0.075mm accounts for the 89.3~94.1% of tailings gross mass.
The tail clay partial size is all not more than 0.25mm, and granular mass of the partial size greater than 0.075mm accounts for the total matter of tail clay
The 10~15% of amount；The plastic limit of the tail clay is 35.1%~38.0%, liquid limit is 59.8%~66.5%, plasticity index is
21.8~31.4.
The preparation method of above-mentioned roadbed subbase course material, includes the following steps:
Step 1: the tail clay of natural moisture content is taken, according to native in " highway earthwork test rule " (JTG E40-2007)
Moisture content experiment (oven drying method) measurement tail clay natural moisture content；
Step 2: taking each raw material according to the ratio；By the drying of tail clay, pulverizes and cross 0.25mm sieve；By tailings and drying rear molding
Clay fully mixes, and then adds curing agent and stirs evenly, obtains composite soil；
Step 3: quality aqueous in the taken tail clay of second step is determined according to the natural moisture content that the first step determines,
Then the water for weighing phase homogenous quantities is added in the composite soil of second step, stirs evenly and shelving 12~for 24 hours under field conditions (factors),
Obtain roadbed subbase course material.
The alkaline residue type composite base material that aggregate used in the present invention is tailings, curing agent is cement and alkaline residue composition, mixed
Close and play the role of having in soil: natural tail clay moisture content is up to 220%, and a certain amount of tailings is added, and that its can be effectively reduced is aqueous
Rate.Since tailings grain diameter is big, intensity is high, skeleton can be played the role of in composite soil.And cement and alkaline residue mixing conduct
Curing agent is added in composite soil after the stirring of chance water, forms mixture slurry, is during which occurred a series of continuous, complexity physico
Variation is learned, these physical-chemical reactions mainly have: the hydrolysis of cement and hydration reaction, ion exchange and pellet effect and hard
Solidifying reaction.A large amount of water in these reaction consumption tail clays of cement.Alkaline residue is the solid material that a kind of gap is big, particle is thin,
Main component is calcium carbonate, and finely divided calcium carbonate and calcium hydroxide generate complex compound CaCO3`Ca(OH)2, can be anti-with cement
Complex compound CaSiO should be generated3`CaCO3`Ca(OH)2`nH2O, to promote the coagulation of cement.Tail clay particle very little,
Powder can be combined well with sticking grain with the hyrate of curing agent, the gap between common tailings particle.With cement
The hydration of each mineralogical composition constantly carries out, and mixture gradually loses plasticity and generates certain intensity, and structure is continuous
Closely, so that voidage reduces therewith, intensity is continuously improved.
Compared with the prior art, the invention has the advantages that:
Roadbed subbase course material of the invention is to utilize trade waste tail clay, tailings and curing agent (alkaline residue, cement)
Be sufficiently mixed obtained, be not only effectively utilized reluctant tail clay, reduces tail clay and flow into water system and polluted river
And the geological hazards that may cause, and the resource utilization of industrial waste tailings and alkaline residue is realized, the system of having saved
This is caused, has achieved the effect that environmental protection；And the present invention solidifies roadbed subbase course material made from tailings and tail clay for Industry Waste
Material tail clay is modified to the good subbase course material of engineering properties, solves the engineering problem that mining area lacks high quality filler.This is right
CHINESE INDUSTRIES, which upgrades and builds a resource-conserving society, to be of great significance and is worth.
The present invention solidifies in roadbed subbase course material made from tailings and tail clay, since tailings granule strength is larger,
Skeleton function is played in mixture, and the hyrate of alkaline residue and cement not only can be with filling pore, but also had cementation, to improve
The intensity and water repelling property of mixture；After measured: the unconfined compressive strength after conserving 7d under the conditions of standard curing reaches
The unconfined compressive strength of 877.6~1272.9kPa, 28d reach 2082.4~3376.3kPa, and the intensity after immersion for 24 hours reaches
The steady coefficient of 1537.3~2646.3kPa, i.e. water is 0.70~0.78；It can be used as road subbase course material and technically simple, have
The characteristics of protecting environment, economizing on resources.
Specific embodiment
Tailings used in following embodiments is derived from Hefei City's Lujiang County dragon bridge iron ore, SiO in chemical component268% is accounted for, grain
Diameter is fine particles, and granular mass of the partial size greater than 0.25mm accounts for the 48.6% of tailings gross mass, and partial size is greater than of 0.075mm
Grain quality accounts for the 91.1% of tailings gross mass.Tail clay is derived from the river near Lujiang County Jin Ding mining industry Co., Ltd, Hefei City
In, natural moisture content 220%, tail clay partial size accounts for tail all less than 0.25mm, granular mass of the partial size greater than 0.075mm
The 15.0% of clay gross mass, plastic limit 35.1%, liquid limit 66.5%, plasticity index 31.4.
Embodiment 1
Roadbed subbase course material is made in the present embodiment as follows:
Step 1: the tail clay of natural moisture content is taken, according to native in " highway earthwork test rule " (JTG E40-2007)
Moisture content experiment (oven drying method) measurement tail clay natural moisture content be 220%；
Step 2: taking tail clay 350g, then drying, pulverize and crossing 0.25mm sieve；Weigh tailings 650g and alkaline residue
120g and cement 120g.First tailings and drying tail clay are sufficiently mixed, alkaline residue is then added and cement mixing is uniform, obtain
Composite soil；
Step 3: the 350g aqueous 240.6g of tail clay is calculated according to the natural moisture content that the first step determines, to second step
In obtained composite soil be added 240.6g water, then stir evenly and under field conditions (factors) shelving 12h to get as roadbed bottom
The inorganic colloid methoder of base material.
After measured: aforementioned stable soil conserves the unconfined compressive strength after 7d under the conditions of standard curing and can reach
The unconfined compressive strength of 1272.9kPa, 28d can reach 3376.3kPa, the intensity 2646.3kPa after soaking for 24 hours, i.e. water is steady
Coefficient is 0.78.
The above test results show that: the inorganic combination of 350g tail clay, 650g tailings and 120g alkaline residue and 120g cement
It is feasible that material, which stablizes soil as roadbed subbase course material,.According to " highway engineering stabilized with inorganic binder testing of materials regulation "
The unconfined compression strength test that (JTG E51-2009) is done, unconfined compressive strength are obviously improved, although after immersion
Intensity decreases, but still meets cement, flyash in " highway road surface construction technology detailed rules and regulations " (JTG/T F20-2015)
The 7d age unconfined compressive strength R of stabilizing materialdDefined intensity value.So the present embodiment solidification tailings and tail clay system
It obtains roadbed subbase course material and meets road subbase course material related request.
Embodiment 2
Roadbed subbase course material is made in the present embodiment as follows:
Step 1: the tail clay of natural moisture content is taken, according to native in " highway earthwork test rule " (JTG E40-2007)
Moisture content experiment (oven drying method) measurement tail clay natural moisture content be 220%；
Step 2: taking tail clay 300g, then drying, pulverize and crossing 0.25mm sieve；Weigh tailings 700g and alkaline residue
100g and cement 100g.First tailings and drying tail clay are sufficiently mixed, alkaline residue is then added and cement mixing is uniform, obtain
Composite soil；
Step 3: the 300g aqueous 206.3g of tail clay is calculated according to the natural moisture content that the first step determines, to second step
In obtained composite soil be added 206.3g water, then stir evenly and under field conditions (factors) shelving 12h to get as roadbed bottom
The inorganic colloid methoder of base material.
After measured: aforementioned stable soil conserves the unconfined compressive strength after 7d under the conditions of standard curing and can reach
The unconfined compressive strength of 877.6kPa, 28d can reach 2082.4kPa, the intensity 1537.3kPa after immersion for 24 hours, i.e. water is surely
Number is 0.74.
The above test results show that: the inorganic combination of 300g tail clay, 700g tailings and 100g alkaline residue and 100g cement
It is feasible that material, which stablizes soil as roadbed underlayment filler,.According to " highway engineering stabilized with inorganic binder testing of materials regulation "
The unconfined compression strength test that (JTG E51-2009) is done, unconfined compressive strength are obviously improved, although 7d intensity
It is slightly less than the 7d age of cement, flyash stabilizing material in " highway road surface construction technology detailed rules and regulations " (JTG/T F20-2015)
Unconfined compressive strength RdDefined intensity value, but age be 28d intensity and immersion for 24 hours after intensity still have it is more high-strength
Degree.So roadbed subbase course material, which is made, in the present embodiment solidification tailings and tail clay can also meet road bottom after conserving for a long time
Base material related request.
Embodiment 3
Roadbed subbase course material is made in the present embodiment as follows:
Step 1: the tail clay of natural moisture content is taken, according to native in " highway earthwork test rule " (JTG E40-2007)
Moisture content experiment (oven drying method) measurement tail clay natural moisture content be 220%；
Step 2: taking tail clay 300g, then drying, pulverize and crossing 0.25mm sieve；Weigh tailings 700g and alkaline residue
120g and cement 120g.First tailings and drying tail clay are sufficiently mixed, alkaline residue is then added and cement mixing is uniform, obtain
Composite soil；
Step 3: the 300g aqueous 206.3g of tail clay is calculated according to the natural moisture content that the first step determines, to second step
In obtained composite soil be added 206.3g water, then stir evenly and under field conditions (factors) shelving 12h to get as roadbed bottom
The inorganic colloid methoder of base material.
After measured: aforementioned stable soil conserves the unconfined compressive strength after 7d under the conditions of standard curing and can reach
The unconfined compressive strength of 1050.5kPa, 28d can reach 2339.5kPa, the intensity 1637.6kPa after soaking for 24 hours, i.e. water is steady
Coefficient is 0.70.
The above test results show that: the inorganic combination of 300g tail clay, 700g tailings and 120g alkaline residue and 120g cement
It is feasible that material, which stablizes soil as roadbed underlayment filler,.According to " highway engineering stabilized with inorganic binder testing of materials regulation "
The unconfined compression strength test that (JTG E51-2009) is done, unconfined compressive strength are obviously improved, although after immersion
Intensity decreases, but still meets cement, flyash in " highway road surface construction technology detailed rules and regulations " (JTG/T F20-2015)
The 7d age unconfined compressive strength R of stabilizing materialdDefined intensity value.So the present embodiment solidification tailings and tail clay system
It obtains roadbed subbase course material and meets road subbase course material related request.
Claims (2)
1. roadbed subbase course material made from a kind of solidification tailings and tail clay, which is characterized in that the roadbed subbase course material
Raw material include tail clay, tailings and curing agent；The curing agent is the alkaline residue type mixed by portland cement and alkaline residue
Composite base material；The tailings quality is the 60~75% of tailings and tail clay gross mass；The tail clay quality is tailings and tail
The 25~40% of clay gross mass；The curing agent quality is the 15~25% of tailings and tail clay gross mass, the tailings
SiO in chemical component265%~75% is accounted for, the partial size of the tailings is fine particles, and partial size is greater than the granular mass of 0.25mm
Account for the 43.6~52.0% of tailings gross mass, granular mass of the partial size greater than 0.075mm account for tailings gross mass 89.3~
94.1%, the mass ratio of the portland cement and the alkaline residue is 1:1；
The tail clay partial size is all not more than 0.25mm, and granular mass of the partial size greater than 0.075mm accounts for tail clay gross mass
10~15%；The plastic limit of the tail clay is 35.1%~38.0%, liquid limit is 59.8%~66.5%, plasticity index 21.8
~31.4.
2. the preparation method of roadbed subbase course material described in a kind of claim 1, which comprises the steps of:
Step 1: taking the tail clay of natural moisture content, contain according to native in " highway earthwork test rule " (JTG E40-2007)
Water rate tests the natural moisture content of (oven drying method) measurement tail clay；
Step 2: taking each raw material according to the ratio；By tail clay drying, pulverizes and cross 0.25mm sieve；By the tailings and drying
The tail clay fully mixes afterwards, then adds the curing agent and stirs evenly, obtains composite soil；
Step 3: determine that second step takes quality aqueous in the tail clay according to the natural moisture content that the first step determines,
Then weigh phase homogenous quantities water be added second step the composite soil in, stir evenly and under field conditions (factors) shelving 12~
For 24 hours to get arrive the roadbed subbase course material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205097.5A CN106587887B (en) | 2016-12-23 | 2016-12-23 | Roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205097.5A CN106587887B (en) | 2016-12-23 | 2016-12-23 | Roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106587887A CN106587887A (en) | 2017-04-26 |
| CN106587887B true CN106587887B (en) | 2019-08-20 |
Family
ID=58603331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611205097.5A Active CN106587887B (en) | 2016-12-23 | 2016-12-23 | Roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106587887B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231442B (en) * | 2021-05-08 | 2022-05-24 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
| CN114193587B (en) * | 2021-11-19 | 2023-04-25 | 温州大学 | Construction process for site splicing paving foundation of spoil prefabricated building block |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255043A (en) * | 2007-12-28 | 2008-09-03 | 江苏省常州市航道管理处 | Formula of modifier for road engineering fill |
-
2016
- 2016-12-23 CN CN201611205097.5A patent/CN106587887B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255043A (en) * | 2007-12-28 | 2008-09-03 | 江苏省常州市航道管理处 | Formula of modifier for road engineering fill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106587887A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101602567B (en) | Waste mud solidification processing method based on polypropylene acetamide | |
| CN101607812B (en) | Compound curing agent of high cement slurry | |
| CN102515633B (en) | Baking-free cylindrical attapulgite river bottom mud ceramisites | |
| CN103771787A (en) | Active powder soil solidifying agent as well as preparation method and application thereof | |
| CN109853310A (en) | A kind of dredging silt industrial residue composite curing light soil and roadbed placement in layers construction method | |
| CN103319067B (en) | Environment-friendly type mud solidification method | |
| CN1727301A (en) | Buring free, steaming free bearing building blocks or bricks prepared from tailing sand of iron ore, and manufacturing process | |
| CN107129249A (en) | A kind of Bayer process red mud gangue roadbed material and preparation method | |
| CN105152519A (en) | Inorganic silt curing agent and preparation method thereof as well as road material | |
| CN103130476A (en) | Ocean dredging sludge composite solidified material | |
| CN106116395A (en) | A kind of inorganic colloid methoder as road subbase course filler and compound method thereof | |
| CN102531437A (en) | Tailing sand two-component soil pavement sub-base layer mixture and preparation method thereof | |
| CN101805161A (en) | Baking-free brick cementing agent prepared from drilling solid waste | |
| CN107117916A (en) | A kind of powder soil solidification additive for roadbase | |
| CN103342527A (en) | Waste concrete reclaimed tunnel back lining grouting material and preparation method thereof | |
| CN106587887B (en) | Roadbed subbase course material and its preparation method made from a kind of solidification tailings and tail clay | |
| CN102352622A (en) | Method for improving swelling soil by using alkali residue and construction method for alkali- residue-modified soil | |
| CN111470751A (en) | Dredged sludge curing agent, preparation method and use method | |
| CN111170663A (en) | Sea mud curing agent | |
| CN104402371B (en) | Road pavements of a kind of building waste compound iron mine tailing and preparation method thereof | |
| CN109456734A (en) | A kind of soil-rock mixture structure road dust solidification dust suppressant and preparation method thereof | |
| CN113087487A (en) | Construction process for red mud coal gangue aggregate pavement base course stabilized by carbide slag and coal ash | |
| CN102503516B (en) | Irregularly-shaped sintering-free attapulgite river sediment ceramsite | |
| CN106396533A (en) | Low-creep concrete prepared by adopting concrete mixing station waste slurry | |
| CN104692770A (en) | Road paving material prepared from construction waste composite steel slag and preparation method of road paving material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |