CN108358529A - A kind of compound improvement roadbed material of low liquid limit silt and preparation method thereof - Google Patents

A kind of compound improvement roadbed material of low liquid limit silt and preparation method thereof Download PDF

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Publication number
CN108358529A
CN108358529A CN201810420266.XA CN201810420266A CN108358529A CN 108358529 A CN108358529 A CN 108358529A CN 201810420266 A CN201810420266 A CN 201810420266A CN 108358529 A CN108358529 A CN 108358529A
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China
Prior art keywords
roadbed
low liquid
liquid limit
parts
aggregate
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CN201810420266.XA
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Chinese (zh)
Inventor
丁磊
王春堂
马洪明
孙甲奇
潘国安
乔军亭
张星
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First Engineering Co Ltd of China Railway 23rd Bureau Group Co Ltd
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First Engineering Co Ltd of China Railway 23rd Bureau Group Co Ltd
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Priority to CN201810420266.XA priority Critical patent/CN108358529A/en
Publication of CN108358529A publication Critical patent/CN108358529A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00Foundations for pavings

Abstract

The invention discloses compound improvement roadbed materials of a kind of low liquid limit silt and preparation method thereof, which includes following parts by weight(In terms of dry ground)Raw material are prepared:35 parts of composite modifying agent, 7 15 parts of aggregate and 80 90 parts of low liquid limit silt;The composite modifying agent is prepared by cement, gypsum, white lime and lignosulfonates;The aggregate size is 0.1 0.5mm;The roadbed material improves low liquid limit silt using composite modifying agent, utilize the synergistic function of composite modifying agent, the compound improvement roadbed material mechanical property and water-resistant stability made significantly improves, and is conducive to large-scale application of the low liquid limit silt material in road construction.

Description

A kind of compound improvement roadbed material of low liquid limit silt and preparation method thereof
Technical field
The present invention relates to roadbed material field, more particularly to the compound improvement roadbed material of a kind of low liquid limit silt and its preparation Method.
Background technology
Silt is distributed widely in alluvial plain, fluvial-delta, the coastal plain area in China, and the particle of silt is uniform, Grain size is single, and sticky poor, disproportionately graded, liquid limit value is small, and plasticity index is low, and intensity is low, California bearing ratio CBR (California Bearing Ratio) it is not easy to reach engineering design requirements, it is a kind of road-making material that engineering properties is poor.Low liquid limit silt is It is less than 50% silt for liquid limit, this silt soil sample grading is poor, and the soil body has higher compressibility and permeability, even if pressing The porosity for still having up to 9%~10% in the case that solidity is very high does not reach really closely knit, is provided for the infiltration of rainwater Easily channel to provide condition for the deformation of roadbed, therefore cannot be directly used to filling roadbed.
In order to enhance the strength and stability of silt roadbed, various regions according to the origin cause of formation of silt and physical property it is different often Roadbed improvement is carried out using different methods.The existing improvement to silt is mainly carried out from the following aspects:(1) improve soil Mechanical property, increase soil cohesion and internal friction angle, effectively improve soil classifiction, improve soil consolidation characteristics and can Compactibility;(2) endurance qualities such as water rationality, water stability, frost resistance and resistance to drying and watering cycle ability of enhancing soil;(3) ensure that it is strong Degree and durability constantly increase with the continuity of time;(4) application range for expanding earth material keeps available earth material Area distribution wide General, raw material is very sufficient;(5) economic cost is reduced.And the mode improved mainly mixes two-ash soil, cement, quick lime etc. often With the industrial wastes such as inorganic binder or incorporation slag, cement miberal powder, phosphoric acid or curing agent is added.
Now, by a variety of evolutionary approach to low liquid limit silt, the performance of low liquid limit silt is made to disclosure satisfy that substantially It is used for road construction as common roadbed material, however, due to the limitation of silt material self performance or improved formulations, is caused existing Some low liquid limit silts improvement properties of roadbed material is unsatisfactory, and that there are mechanical properties is not high, water-resistant stability is poor, is modified to This high many defect makes existing low liquid limit silt improvement roadbed material that can't be used for the roadbed construction of high standard road, To seriously limiting extensive use of the low liquid limit silt in road construction, also increases and geographically carry out road in silt and build If construction cost.
Invention content
It is an object of the invention to overcome, existing low liquid limit silt improvement roadbed material mechanical property is high, water-fast stabilization The poor deficiency of property provides a kind of compound improvement roadbed material of low liquid limit silt and preparation method thereof;The present invention is changed using compound Good dose is improved low liquid limit silt, utilizes the synergistic function of composite modifying agent, so as to get compound improvement roadbed material Material mechanical property and water-resistant stability significantly improve, and are conducive to large-scale application of the low liquid limit silt material in road construction.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of compound improvement roadbed materials of low liquid limit silt, including Following parts by weight(In terms of dry ground)Raw material are prepared:3-5 parts of composite modifying agent, 7-15 parts of aggregate and 80-90 parts Low liquid limit silt;The composite modifying agent is prepared by cement, gypsum, white lime and lignosulfonates;It is described Aggregate size be 0.1-0.5mm.
A kind of compound improvement roadbed material of low liquid limit silt, wherein the composite modifying agent contained has synergistic function, Cement and white lime have hydraulicity, can promote the cementing of silt particle and aggregate, be formed using aggregate as base in roadbed material The network structure of point, can confine the movement of silt particle, can also be improved while increasing roadbed material mechanical property water-fast steady It is qualitative, and the two can interact, cementing power significantly increases;Gypsum has good water imbibition, can be dissolved in water, can fill up Hole between grain can improve the plasticity of silt, enhance internal friction, have facilitation to cement and the cementing of white lime; And the water-reduction that lignosulfonates have, water-soluble, low liquid limit performance compensates with silt, while can also fill up Hole between particle improves the plasticity of silt, enhances internal friction, has facilitation to cement and the cementing of white lime; Meanwhile the grain size by controlling aggregate, so that particles of aggregates is formed complementation with silt particle, roadbed material porosity can be reduced, increases Encrypt solidity, there is synergistic effect to the improving effect of composite modifying agent, the mechanical property of roadbed material and water-resistant stability into One step enhances;The composite road bed material of low liquid limit silt of the present invention is by the mating reaction of composite modifying agent and aggregate, after making improvement Roadbed material have excellent mechanical property and water-resistant stability, high standard roadbed is can apply to, to low liquid limit silt material Application in high standard road construction provides guarantee.
A kind of above-mentioned compound improvement roadbed material of low liquid limit silt, wherein preferred, water in the composite modifying agent The ratio between amount of substance of mud, gypsum, white lime and lignosulfonates is 5-10 ︰ 2-5 ︰ 4-6 ︰ 0.5-1;It is compound by preferred Modifying agent is more preferable to the improved effect of low liquid limit silt;Most preferably, cement in the composite modifying agent, gypsum, lime and The ratio between amount of substance of lignosulfonates is 8 ︰, 3 ︰, 5 ︰ 0.8.
The above-mentioned compound improvement roadbed material of a kind of low liquid limit silt, wherein preferred, the lignosulfonates are wood It is one or more in quality sodium sulfonate, potassium lignosulfonate, calcium lignosulfonate.
The above-mentioned compound improvement roadbed material of a kind of low liquid limit silt, wherein preferred, the aggregate is slag or clinker In it is one or more.
The above-mentioned compound improvement roadbed material of a kind of low liquid limit silt, wherein preferred, the aggregate size is 0.2- 0.4mm;Within the scope of the preferable particle size, aggregate is best to the synergistic effect of composite modifying agent, and obtained properties of roadbed material is most It is good.
A kind of above-mentioned compound improvement roadbed material of low liquid limit silt, wherein preferred, the compound improvement of low liquid limit silt Roadbed material, including following parts by weight(In terms of dry ground)Raw material are prepared:Bone including 4 parts of composite modifying agents, 11 parts Material and 85 parts of low liquid limit silt;Under preferred raw material proportioning, obtained properties of roadbed material is best.
In order to achieve the above-mentioned object of the invention, further, the present invention provides a kind of compound improvement roadbeds of low liquid limit silt The preparation method of material, includes the following steps:
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are mixed according to proportioning, obtain compound improvement Agent;
Aggregate:Slag or clinker are crushed, is sieved, obtains the aggregate of specified particle size;
(2)The preparation of roadbed material:By step(1)Composite modifying agent, aggregate and low liquid limit silt after mixing, add water to stir It mixes, obtains the compound improvement roadbed material of low liquid limit silt.
A kind of preparation method of the compound improvement roadbed material of low liquid limit silt, utilizes composite modifying agent made of compounding and sieve The aggregate of certain grain size of choosing carries out improved treatment to low liquid limit silt, and the mechanical property of low liquid limit silt and resistance to water stability is made to obtain To significantly increasing, low liquid limit silt is made to be applicable to more road foundations, the preparation method is simple, reliable, can be built in road It is widely used in and if prepares the compound improvement roadbed material of low liquid limit silt.
A kind of preparation method of the above-mentioned compound improvement roadbed material of low liquid limit silt, wherein preferred, step(2)In stir The speed mixed is 60-120r/min;Time is 5-20min;Stirring extent influences the deployment conditions of raw material in roadbed material, together When the hydraulicity of cement and lime is impacted, by preferred, obtained improvement properties of roadbed material is best.
A kind of preparation method of the above-mentioned compound improvement roadbed material of low liquid limit silt, wherein preferred, step(2)In it is multiple The water content control of improvement roadbed material is closed in 15-25%;Water content in roadbed material can influence the plasticity and pressure of roadbed material Reality can also influence final performance, and by preferred, obtained improvement roadbed material compactibility is good, and performance is best.
Compared with prior art, beneficial effects of the present invention:
1, the compound improvement roadbed material of low liquid limit silt of the present invention, the composite modifying agent contained have synergistic function, can show Write the mechanical property of enhancing low liquid limit silt and resistance to water stability.
2, the aggregate of the compound improvement roadbed material of low liquid limit silt of the present invention, addition has specific grain size, makes aggregate Grain forms complementation with silt particle, can reduce roadbed material porosity, increases compactness, has to the improving effect of composite modifying agent There are synergistic effect, the mechanical property and water-resistant stability of roadbed material to further enhance.
3, the preparation method of the compound improvement roadbed material of low liquid limit silt of the present invention, it is simple, reliable, it can be in road construction It is widely used in and prepares the compound improvement roadbed material of low liquid limit silt.
Specific implementation mode
With reference to test example and specific implementation mode, the present invention is described in further detail.But this should not be understood It is only limitted to embodiment below for the range of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that the content of present invention is realized The range of invention.
Embodiment 1
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are carried out by the ratio between amount of substance for 8 ︰, 3 ︰, 5 ︰ 0.8 Mixing, obtains composite modifying agent;
Aggregate:Slag and clinker are crushed, are sieved, the aggregate that grain size is 0.3mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent, 11 parts of aggregate and the mixing of 85 parts of low liquid limit silt After uniformly, its water content is controlled 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Embodiment 2
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are carried out by the ratio between amount of substance for 5 ︰, 5 ︰, 4 ︰ 0.5 Mixing, obtains composite modifying agent;
Aggregate:Clinker is crushed, is sieved, the aggregate that grain size is 0.1mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 5 parts of composite modifying agent, 15 parts of aggregate and the mixing of 80 parts of low liquid limit silt After uniformly, its water content is controlled 15%, 5min is stirred with the speed of 120r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Embodiment 3
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are mixed by the ratio between amount of substance for 10 ︰, 2 ︰, 6 ︰ 1 It closes, obtains composite modifying agent;
Aggregate:Slag is crushed, is sieved, the aggregate that grain size is 0.5mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 3 parts of composite modifying agent, 7 parts of aggregate and the mixing of 90 parts of low liquid limit silt After uniformly, its water content is controlled 25%, 20min is stirred with the speed of 60r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Comparative example 1
(1)Raw material prepare:
Composite modifying agent:Cement and white lime are mixed by the ratio between amount of substance for 8 ︰ 5, composite modifying agent is obtained;
Aggregate:Slag and clinker are crushed, are sieved, the aggregate that grain size is 0.3mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent, 11 parts of aggregate and the mixing of 85 parts of low liquid limit silt After uniformly, its water content is controlled 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Comparative example 2
(1)Raw material prepare:
Composite modifying agent:Gypsum and lignosulfonates are mixed by the ratio between amount of substance for 3 ︰ 0.8, compound improvement is obtained Agent;
Aggregate:Slag and clinker are crushed, are sieved, the aggregate that grain size is 0.3mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent, 11 parts of aggregate and the mixing of 85 parts of low liquid limit silt After uniformly, its water content is controlled 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Comparative example 3
(1)Raw material prepare:
Composite modifying agent:Cement and lignosulfonates are mixed by the ratio between amount of substance for 8 ︰ 0.8, compound improvement is obtained Agent;
Aggregate:Slag and clinker are crushed, are sieved, the aggregate that grain size is 0.3mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent, 11 parts of aggregate and the mixing of 85 parts of low liquid limit silt After uniformly, its water content is controlled 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Comparative example 4
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are carried out by the ratio between amount of substance for 8 ︰, 3 ︰, 5 ︰ 0.8 Mixing, obtains composite modifying agent;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent and 96 parts of low liquid limit silt after mixing, control Its water content is made 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed material of low liquid limit silt.
Comparative example 5
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are carried out by the ratio between amount of substance for 8 ︰, 3 ︰, 5 ︰ 0.8 Mixing, obtains composite modifying agent;
Aggregate:Slag and clinker are crushed, are sieved, the aggregate that grain size is 0.08mm is obtained;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent, 11 parts of aggregate and the mixing of 85 parts of low liquid limit silt After uniformly, its water content is controlled 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed of low liquid limit silt Material.
Comparative example 6
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are carried out by the ratio between amount of substance for 8 ︰, 3 ︰, 5 ︰ 0.8 Mixing, obtains composite modifying agent;
(2)The preparation of roadbed material:Take step(1)In 4 parts of composite modifying agent and 85 parts of low liquid limit silt after mixing, control Its water content is made 20%, 15min is stirred with the speed of 90r/min, obtains the compound improvement roadbed material of low liquid limit silt.
The compound improvement roadbed material of low liquid limit silt that above-described embodiment 1-3 and comparative example 1-6 are obtained is detected, is tied Fruit is as follows:
Serial number California bearing ratio (%) The compressed coefficient(MPa-1 Infiltration coefficient(cm/s)*10-4 Unconfined compressive strength(MPa) Internal friction angle Cohesive strength(KPa)
Low liquid limit silt 7.62 0.12 2.41 0.13 19.2° 8.86
Embodiment 1 62.21 0.08 2.05 1.56 24.9° 36.48
Embodiment 2 61.65 0.08 2.06 1.59 24.7° 35.68
Embodiment 3 61.82 0.08 2.04 1.53 24.4° 35.82
Comparative example 1 42.35 0.11 2.32 1.03 20.5° 18.73
Comparative example 2 20.45 0.09 2.18 0.48 22.8° 23.52
Comparative example 3 31.26 0.09 2.16 0.87 22.1° 20.75
Comparative example 4 30.81 0.10 2.21 0.72 21.8° 20.36
Comparative example 5 53.13 0.09 2.05 1.15 23.8° 34.32
Comparative example 6 34.23 0.1 2.02 0.51 25.7° 39.28
By above-mentioned testing result:The compound improvement roadbed material of low liquid limit silt that 1-3 of the embodiment of the present invention is prepared, Relative to pure low liquid limit silt, properties significantly improve, and especially mechanical property and water-resistant stability significantly increases, full The performance requirement of sufficient high standard roadbed material;And in comparative example 1-4, composite modifying agent as defined in the application is not used, although Dosage is identical, but after lacking wherein component, and the synergistic function of composite modifying agent disappears, the performance of compound improvement roadbed material It is remarkably decreased;The aggregate size used in comparative example 5 is too small, is impacted to the stability of the network system, compound improvement road The performance of sill has to be declined by a relatively large margin;Be not added with aggregate in comparative example 6, although it is compound improvement roadbed material cohesive strength and Internal friction angle increases, but its mechanical property and water-resistant stability are remarkably decreased, and are not suitable for roadbed construction.

Claims (10)

1. a kind of compound improvement roadbed material of low liquid limit silt, which is characterized in that including following parts by weight(In terms of dry ground)Former material Material is prepared:3-5 parts of composite modifying agent, 7-15 parts of aggregate and 80-90 parts of low liquid limit silt;The compound improvement Agent is prepared by cement, gypsum, white lime and lignosulfonates;The aggregate size is 0.1-0.5mm.
2. roadbed material according to claim 1, which is characterized in that cement, gypsum, ripe stone in the composite modifying agent The ratio between amount of substance of ash and lignosulfonates is 5-10 ︰ 2-5 ︰ 4-6 ︰ 0.5-1.
3. roadbed material according to claim 2, which is characterized in that cement, gypsum, lime in the composite modifying agent It is 8 ︰, 3 ︰, 5 ︰ 0.8 with the ratio between the amount of substance of lignosulfonates.
4. roadbed material according to claim 1, which is characterized in that the lignosulfonates are lignin sulfonic acid It is one or more in sodium, potassium lignosulfonate, calcium lignosulfonate.
5. roadbed material according to claim 1, which is characterized in that the aggregate be slag or one kind in clinker or It is a variety of.
6. roadbed material according to claim 1, which is characterized in that the aggregate size is 0.2-0.4mm.
7. roadbed material according to claim 1, which is characterized in that including following parts by weight(In terms of dry ground)Raw material system It is standby to form:4 parts of composite modifying agent, 11 parts of aggregate and 85 parts of low liquid limit silt.
8. a kind of preparation method of the roadbed material described in claim 1-7 any one, which is characterized in that including following step Suddenly:
(1)Raw material prepare:
Composite modifying agent:Cement, gypsum, white lime and lignosulfonates are mixed according to proportioning, obtain compound improvement Agent;
Aggregate:Slag or clinker are crushed, is sieved, obtains aggregate;
(2)The preparation of roadbed material:By step(1)Composite modifying agent, aggregate and low liquid limit silt after mixing, add water to stir It mixes, obtains the compound improvement roadbed material of low liquid limit silt.
9. the preparation method of roadbed material according to claim 8, which is characterized in that step(2)The speed of middle stirring is 60- 120r/min, time 5-20min.
10. the preparation method of roadbed material according to claim 8, which is characterized in that step(2)In compound improvement roadbed material The water content control of material is in 15-25%.
CN201810420266.XA 2018-05-04 2018-05-04 A kind of compound improvement roadbed material of low liquid limit silt and preparation method thereof Pending CN108358529A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110143800A (en) * 2019-06-10 2019-08-20 广西大学 A kind of silt modification method
CN111268951A (en) * 2020-03-25 2020-06-12 长安大学 Improved low-liquid-limit silt roadbed material and preparation method and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007204974A (en) * 2006-01-31 2007-08-16 Takenaka Komuten Co Ltd Cement-solidified soil composition
CN101381194A (en) * 2008-09-27 2009-03-11 天津渤海环保工程有限公司 Environment-friendly type sludge firming agent
CN103305226A (en) * 2013-05-31 2013-09-18 东南大学 Silt soil curing agent of silt soil subgrade, and curing method thereof
CN103979914A (en) * 2014-05-22 2014-08-13 同济大学 Curing agent for reinforcing and treating soft soil foundation constructed at low temperature and preparation method thereof
CN106049212A (en) * 2016-07-29 2016-10-26 北京市政建设集团有限责任公司 Improved roadbed filling material based on low liquid limit silt and a manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007204974A (en) * 2006-01-31 2007-08-16 Takenaka Komuten Co Ltd Cement-solidified soil composition
CN101381194A (en) * 2008-09-27 2009-03-11 天津渤海环保工程有限公司 Environment-friendly type sludge firming agent
CN103305226A (en) * 2013-05-31 2013-09-18 东南大学 Silt soil curing agent of silt soil subgrade, and curing method thereof
CN103979914A (en) * 2014-05-22 2014-08-13 同济大学 Curing agent for reinforcing and treating soft soil foundation constructed at low temperature and preparation method thereof
CN106049212A (en) * 2016-07-29 2016-10-26 北京市政建设集团有限责任公司 Improved roadbed filling material based on low liquid limit silt and a manufacturing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李应文: "《路基工程》", 31 October 2016, 中国铁道出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110143800A (en) * 2019-06-10 2019-08-20 广西大学 A kind of silt modification method
CN111268951A (en) * 2020-03-25 2020-06-12 长安大学 Improved low-liquid-limit silt roadbed material and preparation method and application thereof

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