CN110342868A - A kind of slity soil pavement material semi-flexible and preparation method thereof - Google Patents
A kind of slity soil pavement material semi-flexible and preparation method thereof Download PDFInfo
- Publication number
- CN110342868A CN110342868A CN201910529880.4A CN201910529880A CN110342868A CN 110342868 A CN110342868 A CN 110342868A CN 201910529880 A CN201910529880 A CN 201910529880A CN 110342868 A CN110342868 A CN 110342868A
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- China
- Prior art keywords
- flexible
- slity soil
- curing agent
- slity
- pavement material
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Classifications
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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
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
-
- 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
Abstract
The invention discloses a kind of slity soil pavement materials semi-flexible and preparation method thereof, belong to field of road.The pavement material is mixed in a certain ratio by slity soil, Flexible Curing Agent, activity excitant, mixed and stirred, be compacted and health process be made.Compared with prior art, slity soil pavement material semi-flexible of the invention have many advantages, such as micro-damage self-healing, pavement performance it is good, it is at low cost, gather materials on the spot, changed suitable for each grade road foundation, inferior grade and rural highway base and underlayment, unfavorable foundation fill out, the application fields such as builder's road, there is good application value.
Description
Technical field
The present invention relates to field of road, specifically provide a kind of slity soil pavement material semi-flexible and preparation method thereof.
Background technique
Need to consume the nature construction materials such as a large amount of soil, stone during road project, and to the object of soil, stone material
Reason, water reason and mechanical property propose associated specifications.Currently, as the high speed of China's engineering construction speed and quantity increases
Long, high-quality soil, the stone material that can be directly satisfied with pavement performance are very in short supply, and exhaustive exploitation can further break ring ecology ring
Border.How to gather materials on the spot, sufficiently develops and uses new road material and obtained social common concern.
Slity soil is distributed widely in the middle and lower reaches alluvial tract of the trunk rivers such as the Yellow River, Huaihe River, have sticky content it is low,
Grade matches the features such as poor, permeability is high, water sensitivity is significant.If being directly used in road foundation to fill, in natural precipitation and hair
Under the influence of the factors such as thin water rising, it will lead to intensity deep fades, durability deficiency, sink deformation, frost boiling, collapsing, jelly occur
Melt, the serious plant diseases such as lobe.It follows that slity soil is a kind of undesirable nature material of engineering properties, not can be used directly in
Road engineering.
Applicant discloses a kind of utilization emulsified asphalt composite solid in the patent document of Publication No. CN107285694A
Change the method for slity soil.This method is using emulsified asphalt, cement and slity soil as raw material, although can be realized a kind of available road surface
Material, but in processing technology, production cost and prepare the intensity of pavement material, water stability and the aspect of performance such as freeze proof and still have
Larger room for promotion.
Summary of the invention
The present invention be directed to above-mentioned the deficiencies in the prior art, providing a kind of there is good physics, mechanics, road to use and durable
The slity soil pavement material semi-flexible of performance.
The further technical assignment of the present invention is to provide the preparation method of above-mentioned slity soil pavement material semi-flexible.
The technical solution adopted by the present invention to solve the technical problems is: a kind of slity soil pavement material semi-flexible, by with
Slity soil, Flexible Curing Agent and the activity excitant of lower weight proportion are made:
86~92 parts of slity soil；
6~9 parts of Flexible Curing Agent；
2~5 parts of activity excitant,
The Flexible Curing Agent is red mud asphalt powder.
Each preferred weight proportion of raw material are as follows:
88~90 parts of slity soil；
7~8 parts of Flexible Curing Agent；
3~4 parts of activity excitant.
In slity soil of the present invention, the weight percent content that partial size is less than 0.075mm particle is greater than 50%, organic matter
Weight percent content is less than 10%, and liquid limit is less than 50%, and plasticity index is less than 17.
The red mud asphalt powder can be the mixture of asphalt powder and red mud powder, preferably equal by pitch and red mud heating stirring
Even, cooling is ground.The fineness of red mud asphalt powder is less than 120 mesh after grinding, and water content is less than 3%.
Red mud changes the existence of pitch at normal temperature, forms biggish specific surface area as Flexible Curing Agent carrier,
Its own subsidiary alkalinity can be improved the adhesiveness between pitch and slity soil simultaneously.Pitch is scattered in silty with solid fines state
Between soil particle, occurs to soften continuous packing material hole and microcrack when the temperature rises, improve material compression strength and shearing resistance
Intensity, making material integrally has characteristic semi-flexible and realizes self-healing reinforcement to micro-damage.
The mass ratio of pitch and red mud is preferably 1:1.9~2.7, especially when the mass ratio of pitch and red mud is 1:2.1
When~2.5, technical effect is best.
The pitch is preferably No. 70 or No. 90 pitches；
The red mud is preferably red mud from sintering process or Bayer process red mud.
The activity excitant is mixed by calcium hydroxide and volcanic ash or ground pumice, calcium hydroxide and volcanic ash or floating
The mass ratio of mountain flour is 65~75:25~35, the preferably mixture of calcium hydroxide and volcanic ash, calcium hydroxide and volcanic ash
Mass ratio is 68~72:28~32.
Volcanic ash or ground pumice contain the ingredients such as active silica, aluminium oxide, provocative reaction after mixing with calcium hydroxide
Aquation gelling product is formed, material is made to form premature cure intensity.
Increase at any time, exciting agent hydrated product and the organic gelling component of Flexible Curing Agent constantly merge package slity soil
Particle shape is at three-dimensional aggregate structure, to form high-performance road filling.
Above-mentioned raw material are mixed, are mixed and stirred, compaction moulding, obtain slity soil pavement material semi-flexible after health, but are
The performance of the pavement material made reaches most preferably, and preparation method preferably includes following steps:
(1) red mud is uniformly mixed with 140~160 DEG C of pitch, after mixture is cooling, is ground to fineness less than 120 mesh,
Flexible Curing Agent is made, it is spare；
(2) calcium hydroxide and volcanic ash or ground pumice are at the uniform velocity stirred, stirring blade revolving speed is greater than 120r/min, when stirring
Between be not less than 60s, activity excitant is made, it is spare；
(3) the slity soil optimum moisture content parameter obtained according to modified compaction test, silty soil's water content is adjusted to
+ 0.5~1% range of optimum moisture content parameter；
(4) by step (1)~(3) described slity soil, Flexible Curing Agent, activity excitant uniform mixing in proportion, densification
To more than 0.94 compactness, moisture-keeping maintaining 48~72 hours, slity soil pavement material semi-flexible is made,
The weight proportion of slity soil, Flexible Curing Agent and activity excitant are as follows:
86~92 parts of slity soil；
6~9 parts of Flexible Curing Agent；
2~5 parts of activity excitant.
Compared with prior art, slity soil pavement material semi-flexible of the invention and preparation method thereof has following prominent
The utility model has the advantages that
(1) present invention slity soil pavement material cohesion c semi-flexible is greater than 120kPa, internal friction angleGreater than 30 °, by force
Degree be greater than 2.0MPa, 7000~9000MPa of dynamic modulus of elasticity, coefficient of softing be greater than 0.85, through 55~60 DEG C circulating-heating 10 times
After gain in strength be greater than 2.6Mpa, have good application performance index, can scale substitution tradition soil, stone filling material, tool
There are very high application value and development prospect；
(2) it is bad effectively to overcome that slity soil sticky content is low, grain composition is poor, permeability is high, water sensitivity is significant etc.
Engineering characteristic improves silty soil microstructure by pitch dusting, flexible solidification and activity excitation technology, hence it is evident that raising physics,
Mechanics, road is used and endurance quality, and working performance is better than tradition soil, stone material and cement, lime and two ash improvement fine grained soils, not only
The road-making material problem in short supply for solving slity soil Distribution Area, effectively recycles industrial waste material, is conducive to economy, society
Sustainable development is coordinated in meeting, resource and environmental protection；
(3) effect of resistance to compression, shearing strength receiving cyclic load, while the water stability and frost resistance of material are improved
It can be good；Simulating summer road, Elevated Temperature Conditions intensity can be with sustainable growth, in addition, early stage micro-damage occur may be implemented certainly repeatedly
More reinforcement；
(4) preparation flow is simple, and technological parameter is easily controllable, efficiently uses industrial waste material, realizes slity soil on the spot
Materials, economize on resources, and reduce project cost.
Specific embodiment
The present invention is further explained in the light of specific embodiments, but not as a limitation of the invention.
Unless otherwise instructed, the content of following each ingredients used is weight percentage content.
[embodiment]
Preparation method:
(1) pitch is heated to 155 ± 2 DEG C, keeps the temperature condition, is proportionally added into red mud and stirs.
Mixture is cooled to room temperature, being ground to fineness is that Flexible Curing Agent is made in 200 mesh, spare；
(2) calcium hydroxide is at the uniform velocity stirred in proportion with volcanic ash, stirring blade revolving speed is 150r/min, and mixing time is
Flexible Curing Agent is made in 60s, spare；
(3) (slity soil used in the present embodiment is most for the slity soil optimum moisture content parameter obtained according to modified compaction test
Good moisture content is 9.2%), silty soil's water content to be adjusted to 9.8%.
(4) by step (1)~(3) described slity soil, Flexible Curing Agent, activity excitant uniform mixing in proportion, densification
To 0.94 compactness, moisture-keeping maintaining 72 hours, slity soil pavement material semi-flexible is made.
Wherein, the weight proportion of each raw material is as shown in the table:
[comparative example]
Comparative example preparation method is identical as embodiment.
Wherein, the weight proportion of each raw material is as shown in the table:
[performance measurement]
According to country and professional standard, it is strong that shearing resistance is carried out to slity soil pavement material semi-flexible obtained by embodiment, comparative example
The test of degree, compression strength, dynamic modulus of elasticity, 55 DEG C of heat cycles intensity, coefficient of softing index, test result is as follows table institute
Show:
The present invention makes full use of the mutual excitation between the materials such as industrial solid waste red mud, pitch, volcanic ash, ground pumice
With the effect that has complementary functions, it is collectively formed in conjunction with slity soil with semi-flexible and self-healing ability new road filling material, by
Above-mentioned test data can be seen that its shearing strength, compression strength, elevated temperature strength growth and water resistance etc. and have excellent performance,
It has highly application value.
Embodiment described above, only one kind of the present invention more preferably specific embodiment, those skilled in the art
The usual variations and alternatives that member carries out within the scope of technical solution of the present invention should be all included within the scope of the present invention.
Claims (7)
1. a kind of slity soil pavement material semi-flexible, which is characterized in that by the slity soil of following weight proportion, Flexible Curing Agent and
Activity excitant is made:
86~92 parts of slity soil；
6~9 parts of Flexible Curing Agent；
2~5 parts of activity excitant,
The Flexible Curing Agent is red mud asphalt powder.
2. slity soil pavement material semi-flexible according to claim 1, which is characterized in that the weight proportion of each raw material
Are as follows:
88~90 parts of slity soil；
7~8 parts of Flexible Curing Agent；
3~4 parts of activity excitant.
3. slity soil pavement material semi-flexible according to claim 1 or 2, it is characterised in that: red mud asphalt powder is by pitch
With red mud heating stirring uniformly, cooling grind, the mass ratio of pitch and red mud is 1:1.9~2.7.
4. slity soil pavement material semi-flexible according to claim 1 or 2, it is characterised in that:
The pitch is No. 70 or No. 90 pitches；
The red mud is red mud from sintering process or Bayer process red mud.
5. slity soil pavement material semi-flexible according to claim 1 or 2, it is characterised in that: the activity excitant by
Calcium hydroxide is mixed with volcanic ash or ground pumice, and calcium hydroxide is 65~75:25 with the mass ratio of volcanic ash or ground pumice
~35.
6. slity soil pavement material preparation method semi-flexible, it is characterised in that the following steps are included:
(1) red mud is uniformly mixed with 140~160 DEG C of pitch, after mixture is cooling, is ground to fineness less than 120 mesh, is made
Flexible Curing Agent, it is spare；
(2) calcium hydroxide and volcanic ash or ground pumice are at the uniform velocity stirred, stirring blade revolving speed is greater than 120r/min, and mixing time is not
Less than 60s, activity excitant is made, it is spare；
(3) the slity soil optimum moisture content parameter obtained according to modified compaction test, silty soil's water content is adjusted to most preferably
+ 0.5~1% range of moisture content parameter；
(4) by step (1)~(3) described slity soil, Flexible Curing Agent, activity excitant uniform mixing in proportion, densification is to big
In 0.94 compactness, moisture-keeping maintaining 48~72 hours, slity soil pavement material semi-flexible is made,
The weight proportion of slity soil, Flexible Curing Agent and activity excitant are as follows:
86~92 parts of slity soil；
6~9 parts of Flexible Curing Agent；
2~5 parts of activity excitant.
7. slity soil pavement material preparation method semi-flexible according to claim 6, it is characterised in that:
The mass ratio of pitch and red mud is 1:1.9~2.7 in Flexible Curing Agent；
The mass ratio of calcium hydroxide and volcanic ash or ground pumice is 65~75:25~35 in activity excitant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910529880.4A CN110342868B (en) | 2019-06-19 | 2019-06-19 | Semi-flexible powdery soil road material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910529880.4A CN110342868B (en) | 2019-06-19 | 2019-06-19 | Semi-flexible powdery soil road material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110342868A true CN110342868A (en) | 2019-10-18 |
| CN110342868B CN110342868B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910529880.4A Active CN110342868B (en) | 2019-06-19 | 2019-06-19 | Semi-flexible powdery soil road material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652913A (en) * | 2021-08-05 | 2021-11-16 | 山东省交通科学研究院 | Novel solidified silt subgrade road expansion splicing structure and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007023570A1 (en) * | 2005-08-24 | 2007-03-01 | Jfe Steel Corporation | Water retaining material composition for paving and method for applying water retaining paving |
| CN103224370A (en) * | 2013-03-11 | 2013-07-31 | 中城建第五工程局有限公司 | Soil solidifying agent, and preparation method and use method thereof |
| CN105753375A (en) * | 2016-02-29 | 2016-07-13 | 河南城建学院 | Asphalt mixture taking red mud as filler and preparation method thereof |
| CN107033612A (en) * | 2017-04-13 | 2017-08-11 | 桂林理工大学 | A kind of preparation method of red mud modified pitch |
| CN107285694A (en) * | 2017-05-23 | 2017-10-24 | 山东省交通科学研究院 | A kind of method of utilization emulsified asphalt composite curing slity soil |
| CN107722649A (en) * | 2017-09-18 | 2018-02-23 | 同济大学 | A kind of modified pitch and its preparation and application |
-
2019
- 2019-06-19 CN CN201910529880.4A patent/CN110342868B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007023570A1 (en) * | 2005-08-24 | 2007-03-01 | Jfe Steel Corporation | Water retaining material composition for paving and method for applying water retaining paving |
| CN103224370A (en) * | 2013-03-11 | 2013-07-31 | 中城建第五工程局有限公司 | Soil solidifying agent, and preparation method and use method thereof |
| CN105753375A (en) * | 2016-02-29 | 2016-07-13 | 河南城建学院 | Asphalt mixture taking red mud as filler and preparation method thereof |
| CN107033612A (en) * | 2017-04-13 | 2017-08-11 | 桂林理工大学 | A kind of preparation method of red mud modified pitch |
| CN107285694A (en) * | 2017-05-23 | 2017-10-24 | 山东省交通科学研究院 | A kind of method of utilization emulsified asphalt composite curing slity soil |
| CN107722649A (en) * | 2017-09-18 | 2018-02-23 | 同济大学 | A kind of modified pitch and its preparation and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652913A (en) * | 2021-08-05 | 2021-11-16 | 山东省交通科学研究院 | Novel solidified silt subgrade road expansion splicing structure and method |
| CN113652913B (en) * | 2021-08-05 | 2022-07-19 | 山东省交通科学研究院 | Novel solidified silt roadbed road extension splicing structure and method |
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| CN110342868B (en) | 2021-08-06 |
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