CN110526623A - Simulate the analog material and preparation method thereof of the weak expansion slime of high-speed railway subgrade - Google Patents
Simulate the analog material and preparation method thereof of the weak expansion slime of high-speed railway subgrade Download PDFInfo
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- CN110526623A CN110526623A CN201910882821.5A CN201910882821A CN110526623A CN 110526623 A CN110526623 A CN 110526623A CN 201910882821 A CN201910882821 A CN 201910882821A CN 110526623 A CN110526623 A CN 110526623A
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- powder
- quartz sand
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- blanc fixe
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- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/22—Natural resins, e.g. rosin
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention proposes a kind of analog material and preparation method thereof for simulating the weak expansion slime of high-speed railway subgrade, aggregate is blanc fixe and quartz sand, intumescent material is montmorillonite powder, cementing agent is the alcoholic solution of colophony powder, blanc fixe accounts for total material specific gravity 15 ~ 72%, quartz sand accounts for total material specific gravity 15 ~ 58%, and montmorillonite powder accounts for total material specific gravity 5 ~ 17%, and colophony powder accounts for total material specific gravity 3 ~ 10%.Include the steps that: (1) determining the related physical index of soil according to undisturbed soil situation；(2) according to each component weight proportion, and raw material is weighed by weight ratio, and prepare rosin alcoholic solution.It stirs evenly blanc fixe, quartz sand, montmorillonite powder to form mixed powder in a reservoir；Rosin alcoholic solution is added into mixed powder, is again stirring for, obtains required analog material, will be used to test after analog material sample preparation, drying.Advantage: raw material is cheap and easy to get, and it is convenient to prepare, and easily processed into type, property is stablized, and the mud stone type of analog is more.
Description
Technical field
The invention belongs to geotechnical engineering fields, are related to analog material preparation technique.
Background technique
The theory of arch deformation, test is caused to be ground for high-speed railway slag-free rail roadbed expansive mud-stone both at home and abroad at present
Study carefully and is substantially at blank.In addition, referring only to sedimentation and deformation limitation in ballastless track of high-speed railway work progress and specification and answering
To measure, but the small arch amount of roadbed can also run bullet train and bring risk difficult to the appraisal, and in practical projects,
Requirement of the high-speed railway to track bed arch deflection is minimum.
Similar material mixture test is to carry out simulation undisturbed soil by certain physical property, mechanical property, dilatancy etc.,
And the development test method of undisturbed soil actual conditions is simulated according to research achievement.Similarity model test is a kind of research hand of science
Section, and researched and analysed indoors, convenient for Research on Regularity and repeated comparative test, for method for numerical simulation
Have closer to the advantages of Practical Project deformation.
To reach the production successful purpose of similarity model test, analog material be must meet the following requirement:
(1) need property to stablize, reduce measured data in the case where external condition interference, solution scene take as former state difficult, cost compared with
High problem.
(2) material chosen is content with very little micro-expansibility ground main performance, and material be easy to get, measure enough, cost is relatively low.
(3) surrounding enviroment are polluted small or pollution-free.
Summary of the invention
The present invention, which provides, a kind of can meet similar test requirement utmostly to simulate the analog material of weak expansion slime, match
It is similar to efficiently solve the problems, such as that analog material does not have multiple features for method and ratio formula processed, while also solving live original
The not exploitativeness and diseconomy of bit test, and can instruct related scientific research test in weak expansive mud-stone analog material match
System.
In order to achieve the above objectives, general thought is as follows for technical solution of the present invention:
A variety of main physical indexes mechanical characteristics of new material and the weak expansive mud-stone of high-speed railway subgrade that the present invention develops
It is similar simultaneously, it solves analog material and does not have multiple features similar technical problem simultaneously, so that in the weak dilatancy of high-speed railway
Analog material is conducive to grind by indoor model test closer to the feature of practical undisturbed soil in the test of mud stone roadbed threedimensional model
Study carefully Laws of Mechanics, the tool such as expansive mud-stone arch theory weak for three-dimensional physical model experimental study high-speed railway subgrade, mechanism
It is significant.
The technical scheme is that a kind of analog material for simulating the weak expansion slime of high-speed railway subgrade, includes bone
Material, intumescent material, cementing agent.Wherein aggregate is blanc fixe and quartz sand, and intumescent material is montmorillonite powder, and cementing agent is
The alcoholic solution of colophony powder, blanc fixe, quartz sand, montmorillonite powder, colophony powder are solidity materials, and weighing and burden is not being examined
When considering Alcohol by weight, weight percentage of each component is as follows:
Blanc fixe accounts for total material specific gravity 15 ~ 72%,
Quartz sand accounts for total material specific gravity 15 ~ 58%,
Montmorillonite powder accounts for total material specific gravity 5 ~ 17%,
Colophony powder accounts for total material specific gravity 3 ~ 10%；
Colophony powder need to be dissolved in alcohol, be mixed with aggregate and intumescent material.
Alcohol used in the alcoholic solution of colophony powder is 95% ethyl alcohol, and rosin Powder Particle Size is less than 0.25mm, colophony powder and 95%
The mass ratio of ethyl alcohol is 1:3.
Blanc fixe granularity is less than 0.5mm, and quartz sand size is less than 0.5mm, and montmorillonite powder granularity is less than 0.5mm.
A kind of preparation method of analog material that simulating the weak expansion slime of high-speed railway subgrade, comprising the following steps:
(1) according to undisturbed soil actual conditions determine soil related physical index, including dry density, saturated water absorption, without lotus expand
Rate, expansive force；
(2) each component weight proportion is calculated according to following formula, and weigh by weight ratio blanc fixe, quartz sand,
Montmorillonite powder, colophony powder, and prepare rosin alcoholic solution；
Dry density g/cm3:Y1=0.003 X1+0.001 X2+1.903
Saturated water absorption/%:Y2=0.764 X1+0.001 X2+0.645X3-4.627
Without lotus expansion rate/%:Y3=1.112 X1+0.150 X2-0.198X3-7.816
Expansive force/kPa:Y4=16.971X1+0.097 X2-7.048X3+8.339
Note: montmorillonite powder accounts for material always than for X1, blanc fixe account for aggregate always than for X2, gelatine ratio be X3；Gelatine is than phalanges material (weight
Spar powder, quartz sand) with the mass ratio of cementing material (colophony powder), quartz sand is as the material progress additional amount for adjusting gelatine ratio
Adjustment；
(3) it stirs evenly blanc fixe, quartz sand, montmorillonite powder to form mixed powder in a reservoir；
(4) rosin alcoholic solution is added in the mixed powder obtained to step (3), is again stirring for until uniformly, obtaining required
Analog material will be used to test after analog material sample preparation, drying.
It is further: 1. according to the mechanics index of physics of known undisturbed soil, can instead to match analog material, and then room can be passed through
If the arch deformation mechanism of interior high-speed railway subgrade model investigation expansive mud-stone, overcome test in situ can not be real
The property applied and and economy, 2. according to existing weak expansive mud-stone similar material mixture, further instruct strong swelling soil, in expand by force
Analog material under soil and different expansive forces is prepared.
The present invention has the advantage that: raw material is cheap and easy to get, and it is convenient to prepare, and easily processed into type, property is stablized, analog
Mud stone type is more etc..The requirement of weaker expansion slime more low expansion standard can accurately be met, be in particular directed to high-speed iron
Road track base without broken stones expansive mud-stone causes the theory of arch deformation, experimental study to provide approach.
Specific embodiment
A kind of analog material for simulating the weak expansion slime of high-speed railway subgrade, includes blanc fixe, quartz sand, montmorillonite
Powder, colophony powder.Blanc fixe and quartz sand are as aggregate, and montmorillonite powder is as intumescent material, and colophony powder is as cementing agent.Weight
Spar powder, quartz sand, montmorillonite powder weight percentage of each component are as follows:
Blanc fixe accounts for total material specific gravity 15 ~ 72%, and blanc fixe crosses diameter 0.5mm sieve, extracting screen underflow；
Quartz sand accounts for total material specific gravity 15 ~ 58%, and quartz sand crosses diameter 0.5mm sieve, extracting screen underflow；
Montmorillonite powder accounts for total material specific gravity 5 ~ 17%, and montmorillonite powder crosses diameter 0.5mm sieve, extracting screen underflow；
Colophony powder accounts for total material specific gravity 3 ~ 10%；Rosin is pulverized, is sieved with 0.25 sieve of diameter, extracting screen underflow obtains colophony powder.
Cementing agent (colophony powder) need to be dissolved in alcohol, be mixed with aggregate and dilatancy, and the preparation of analog material is carried out.
Alcohol used in rosin alcoholic solution is 95% ethyl alcohol, and the mass ratio of colophony powder and 95% ethyl alcohol is 1:3.
The preparation of analog material:
(1) the related physical index that soil is determined according to undisturbed soil actual conditions, such as density, saturated water absorption, without lotus expansion rate, swollen
Expansive force etc..
(2) corresponding weight is calculated according to each physical index empirical equation (see Table 1) according to the fixed physical index of step (1)
Proportion weighs blanc fixe, quartz sand, montmorillonite powder, colophony powder, and prepares rosin alcoholic solution.
(3) it stirs evenly blanc fixe, quartz sand, montmorillonite powder to form mixed powder in a reservoir.
(4) rosin alcoholic solution is added in the mixed powder obtained to step (3), is again stirring for until uniformly, obtaining institute
The analog material needed.
Analog material 120g is taken, analog material is prepared into cutting ring sample with the cutting ring of diameter 6.18cm, high 2cm, with manual
4 layers of compaction moulding of heavy compaction instrument point.It hits after the completion of reality, real cutting ring sample will be hit and remaining powdered sample is placed in 80 DEG C
Baking oven is placed for 24 hours in baking oven.When quality no longer changes, indicate that alcohol volatilizees completely.That is sample production finishes.
Below by taking the weak expansive mud-stone similitude test of the Lanzhou-Xinjiang two wires high-speed rail swelling ground section in Hami area as an example, say
The performance of bright analog material.Hami area undisturbed soil related physical index is shown in Table 2.According to undisturbed soil physical mechanics
Index calculates the reasonable component proportion of analog material, and analog material optimal component proportion is shown in Table 3.1,2,3 group is made according to table 3
Parallel sample, with the physical index of ground field measurement method measurement analog material sample, the results are shown in Table 4,
。
From examples detailed above:
(1) from table 2, the Lanzhou-Xinjiang weak expansive mud-stone of two wires high-speed rail swelling ground section in table 4 Hami area soil and similar material as former state
Expect that sample carries out dry density, saturated water absorption, compares without lotus expansion rate, expansive force, it can be seen that analog material sample and original sample
Soil is substantially similar in terms of physical property, dilatancy and physico-mechanical properties.Thus, analog material meets simulation high-speed iron
The requirement of the weak expansion slime of road roadbed.
(2) present invention, which can accurately make, meets the analog material that weak expansion slime model test requires, and can
To cause the theory of arch deformation, experimental study to provide approach for high-speed railway slag-free rail roadbed expansive mud-stone.It solves
Analog material does not have multiple features similar technical problem simultaneously, so that in the weak expansive mud-stone roadbed three-dimensional mould of high-speed railway
Analog material is conducive to closer to the feature of practical undisturbed soil through Eccentric Loads in Layered Soils and Research Laws of Mechanics in type test, right
It is of great significance in the weak expansive mud-stone arch theory of three-dimensional physical model experimental study high-speed railway subgrade, mechanism etc..
Claims (4)
1. a kind of analog material for simulating the weak expansion slime of high-speed railway subgrade, it is characterised in that include aggregate, dilatancy material
Material, cementing agent, wherein aggregate is blanc fixe and quartz sand, and intumescent material is montmorillonite powder, and cementing agent is the wine of colophony powder
Smart solution, blanc fixe, quartz sand, montmorillonite powder, colophony powder are solidity materials, and weighing and burden is not considering Alcohol by weight
When, weight percentage of each component is as follows:
Blanc fixe accounts for total material specific gravity 15 ~ 72%,
Quartz sand accounts for total material specific gravity 15 ~ 58%,
Montmorillonite powder accounts for total material specific gravity 5 ~ 17%,
Colophony powder accounts for total material specific gravity 3 ~ 10%；
Colophony powder need to be dissolved in alcohol, be mixed with aggregate and intumescent material.
2. the analog material of the simulation weak expansion slime of high-speed railway subgrade according to claim 1, it is characterised in that rosin
Alcohol used in the alcoholic solution of powder is 95% ethyl alcohol, and rosin Powder Particle Size is less than 0.25mm, the mass ratio of colophony powder and 95% ethyl alcohol
For 1:3.
3. the analog material of the simulation weak expansion slime of high-speed railway subgrade according to claim 1, it is characterised in that weight is brilliant
Penicillium toxin is less than 0.5mm, and quartz sand size is less than 0.5mm, and montmorillonite powder granularity is less than 0.5mm.
4. a kind of preparation method for the analog material for simulating the weak expansion slime of high-speed railway subgrade, it is characterised in that including following step
It is rapid:
(1) according to undisturbed soil actual conditions determine soil related physical index, including dry density, saturated water absorption, without lotus expand
Rate, expansive force；
(2) each component weight proportion is calculated according to following formula, and weigh by weight ratio blanc fixe, quartz sand,
Montmorillonite powder, colophony powder, and prepare rosin alcoholic solution；
Dry density g/cm3:Y1=0.003 X1+0.001 X2+1.903
Saturated water absorption/%:Y2=0.764 X1+0.001 X2+0.645X3-4.627
Without lotus expansion rate/%:Y3=1.112 X1+0.150 X2-0.198X3-7.816
Expansive force/kPa:Y4=16.971X1+0.097 X2-7.048X3+8.339
Note: montmorillonite powder accounts for material always than for X1, blanc fixe account for aggregate always than for X2, gelatine ratio be X3；Gelatine is than phalanges material and glue
The mass ratio of material is tied, quartz sand carries out additional amount adjustment as the material for adjusting gelatine ratio；
(3) it stirs evenly blanc fixe, quartz sand, montmorillonite powder to form mixed powder in a reservoir；
(4) rosin alcoholic solution is added in the mixed powder obtained to step (3), is again stirring for until uniformly, obtaining required
Analog material will be used to test after analog material sample preparation, drying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910882821.5A CN110526623A (en) | 2019-09-18 | 2019-09-18 | Simulate the analog material and preparation method thereof of the weak expansion slime of high-speed railway subgrade |
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| CN201910882821.5A CN110526623A (en) | 2019-09-18 | 2019-09-18 | Simulate the analog material and preparation method thereof of the weak expansion slime of high-speed railway subgrade |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792990A (en) * | 2005-11-23 | 2006-06-28 | 山东大学 | Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof |
| CN104003655A (en) * | 2014-05-30 | 2014-08-27 | 中国人民解放军理工大学 | Similar material of brittle rock and preparation method thereof |
-
2019
- 2019-09-18 CN CN201910882821.5A patent/CN110526623A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792990A (en) * | 2005-11-23 | 2006-06-28 | 山东大学 | Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof |
| CN104003655A (en) * | 2014-05-30 | 2014-08-27 | 中国人民解放军理工大学 | Similar material of brittle rock and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刁心宏等: "膨胀岩相似材料的配比试验研究", 《铁道建筑》 * |
| 李增学: "《矿井地质手册》", 30 September 2015, 煤炭工业出版社 * |
| 杨军平等: "IV级弱膨胀围岩相似材料的试验研究", 《广西大学学报》 * |
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Application publication date: 20191203 |