CN108254535A - It is a kind of to pass through fine aggregate evaluation lime, the method for flyash stabilization gravel shrinkage - Google Patents
It is a kind of to pass through fine aggregate evaluation lime, the method for flyash stabilization gravel shrinkage Download PDFInfo
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- CN108254535A CN108254535A CN201711166562.3A CN201711166562A CN108254535A CN 108254535 A CN108254535 A CN 108254535A CN 201711166562 A CN201711166562 A CN 201711166562A CN 108254535 A CN108254535 A CN 108254535A
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- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 42
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 42
- 239000004571 lime Substances 0.000 title claims abstract description 42
- 239000010881 fly ash Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000006641 stabilisation Effects 0.000 title claims abstract description 11
- 238000011105 stabilization Methods 0.000 title claims abstract description 11
- 238000011156 evaluation Methods 0.000 title claims abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 230000008602 contraction Effects 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 15
- 230000036541 health Effects 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010883 coal ash Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 25
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002956 ash Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims 3
- 238000004154 testing of material Methods 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000005056 compaction Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 239000002352 surface water Substances 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000005303 weighing Methods 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0091—Powders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Ceramic Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The present invention relates to a kind of methods by fine aggregate evaluation lime, flyash stabilization gravel shrinkage to belong to Transportation and Civil Engineering field, and this method key step includes：1）Determine lime, the optimum moisture content of fine coal ash broken stones and maximum dry density；2）The cylinder specimen of forming diameter × height=100mm × 100mm；3）After the test specimen of forming at the standard conditions health 6d, health 1d in 20 DEG C of water bath with thermostatic control is immersed；4）After surface moisture is dried, 3 in 6 identical test specimens are placed on bearing and measure contraction distortion with amesdial, other 3 are put under the same conditions, weighs, is counted with average value at regular intervals.The major advantage of this method：（1）It is not susceptible to isolate during shaping test piece, the variability of test data is small；（2）Test specimen is not susceptible to damage when demoulding, and upper and lower ends face keeps complete；（3）Test specimen is not easy scaling-off when weighing, and data reliability is strong.
Description
Technical field
The invention belongs to Transportation and Civil Engineering fields, and in particular to a kind of to evaluate lime, flyash stabilization by fine aggregate
The method of rubble shrinkage.
Background technology
The shrinkage of semi-rigid material is mainly made of two parts:First, cause dry receipts since moisture is reduced
Contracting；Second is that temperature shrinkage caused by temperature reduction.
For temperature shrinkage in temperature-fall period, there is interaction in solid phase, liquid and gas particle in fly ash lime stabilized crushed rock,
Volume contraction is generated so as to cause mixture.This temperature shrinkage fracture mainly includes:It is answered first, the larger temperature difference causes to shrink
Become the crack for being more than and occurring during ultimate tensile strength；Second is that the fatigability cracking that temperature difference repeated action is brought.In semi-rigid type base material
Material is internal, and the water in larger hole, pore and gel pore is primarily present three mechanisms:Dilating effect, surface
Power acts on and frost action, greatly affected the temperature contraction performance of material.
Dry shrink is since volume contraction occurs for moisture evaporation semi-rigid material.This evaporation for being primarily due to moisture is led
It causes that mineral crystal or the effect of gelinite intermediary water, capillary tension effect, absorption water and intermolecular masterpiece occur inside mixture
It 4 processes such as acts on with Carbonization contract, causes the contraction change of mixture volume.
Lu Wenxue etc. is tested by the Dry Shrinkage Performance to semi-rigid type base test specimen and cleavage strength, it is indicated that in equal item
Under part, the drying shrinkage strain of two-ash broken stones is bigger by 40% or so than cement stabilized macadam, and increases comparatively fast in preceding 15d strains, hereafter strains
Gradually tend towards stability.
China is summarized in the past 20 years after the achievement in research and practical experience of semi-rigid type base, from semi-rigid sub-base material
Set about having made intensive studies in terms of dry, temperature contracting and intensity.Result of study shows dosage of binder and the grading gathered materials is breath breath
It is relevant.Anti- temperature contraction performances of the Zhu Yunsheng when pointing out semi-rigid sub-base material in low temperature is worse.Drying shrinkage strains and fluid loss exists
Specimen molding initial stage (10 days or so) variation tendency is more apparent, and then trend is shallower.
Sun Zhaohui is also easy to produce contraction fissure this defect when humidity change for lime, flyash crushed rock base course, is unfolded
Correlation test research.Hydrostatic profile method is used to prepare cylinder test specimen of the size for Φ 150mm × 150mm, test specimen is from examination
After deviating from mould and weighing, wrapped up immediately with plastic film, contraction contrast test is carried out after health is complete.Wang Yan is for lime, powder
Flyash and crushed stone base inevitably leads to the problem of contraction fissure and has carried out experimental study, mixture shrinkage and percentage of water loss,
Relationship between the factors such as temperature, lime, flyash dosage, grading, wherein shrinkage test carry out at ambient temperature.It is molded beam
Formula test specimen, size are 100mm × 100mm × 400mm, are used on patch using 2 sheet resistance foil gauges series winding, to improve experiment essence
Degree.Data is controlled to acquire by computer after on-test, while record the change of moisture content with reference to test specimen.
Gu Shandong has carried out experimental study with regard to the gather materials shrinkage of base of lime, flyash stable regeneration, proposes to use
Just warm and humid Alternating Test case dries it contraction and temperature shrinkage performance carries out analysis of experiments.Laboratory test test is by most preferably containing
Water, maximum dry be close and 98% compactness is made the beam specimen of 100mm × 100mm × 400mm of static pressure method, and health finishes
The test specimen fluid loss variation for measuring different time and deformation values are crossed afterwards to calculate the drying constriction coefficient of cement treated material material and temperature
Spend constriction coefficient.It looks into Xu Dong crack resistance type lime, fine coal ash broken stones mix-design are studied, and test its performance
Card, wherein shrinkage test have carried out 2 kinds of grading lime, fine coal ash broken stones using the beam specimen of 100mm × 100mm × 400mm
The contraction and temperature contracting of mixture are tested.
Invention content
It is of the existing technology to solve the problems, such as, the deficiency of road engineering inorganic stabilizers Material shrinkage test method is made up,
A kind of by fine aggregate evaluation lime, the method for flyash stabilization gravel shrinkage, the survey tool that this method uses is provided
For amesdial, range 0-1mm, precision 0.001mm；Test specimen using static pressure method be molded, sample dimensions for Φ 100mm ×
100mm cylinder specimens.After the test specimen of forming at the standard conditions health 6d, health in 20 DEG C of water bath with thermostatic control is immersed
1d after surface moisture is dried, 3 in 6 identical test specimens is placed on bearing and measure contraction distortion with amesdial, will in addition
3 put under the same conditions, weigh, are counted with average value at regular intervals.Include according to sequencing following
Step：
Step 1：Determine that lime, flyash stationary level are matched and optimum moisture content and maximum dry density and lime, flyash
Dosage；
Step 2：According to the ratio of fine aggregate in grading, lime, flyash in lime, fly-ash mortar test specimen are extrapolated
Dosage；
Step 3：The test specimen of forming health 6d at the standard conditions, is supported in the water bath with thermostatic control for immersing 20 DEG C in last 1 day
It is raw；
Step 4：After health is complete, as in retract chamber after surface moisture is dried, 3 in 6 identical test specimens are put
Contraction distortion is measured with amesdial on bearing, other 3 are put under the same conditions, is weighed at regular intervals, with
Average value is counted.
Step 5：Cylinder specimen contraction strain and constriction coefficient are calculated by the percentage of water loss that measures and shrinkage, passed through
Design different gradation fine aggregate and come evaluate lime, flyash stablize graded broken stone shrinkage.
Specific embodiment
Below in conjunction with specific example, the present invention will be further described, but present disclosure be not limited solely to it is following
Embodiment.
Fly ash lime stabilized crushed rock is a kind of most common semi-rigid sub-base material, and material employed herein is waste and old base's material
Material, material include being derived from Beijing building stones factory and leave unused the waste and old fly ash lime stabilized crushed rock material of stacking.According to related specifications to above-mentioned
Material carries out dry shrinkage testing in a manner of different gradation.
This method mainly evaluates the shrinkage of the two-ash broken stones old material mortar of different grading types.Entirety is mixed
With under mode, design level match in below 4.75mm fine aggregate contents 40%, 3.4% lime, flyash dose lonvestion arrives
For 8.74% in lime, fly-ash mortar, it is in 5.4% lime, flyash dose lonvestion to lime, fly-ash mortar
13.75%.
Implementation case row 1
The experiment of this group is integrally mixed under mode using two-ash broken stones old material fine aggregate, design level match in below 4.75mm
Fine aggregate content is converted in cement mortar in 40% or so, 3.4% cement dose as 8.74%, 5.4% cement dose
Be converted in cement mortar is 13.74%；According to maximum moisture content and maximum dry density shaping test piece, drying shrinkage is measured after health is complete
Experimental result such as following table 1-1：
The dry shrinkage testing result of the grey old material mortars of table 1-1 bis-
It can be obtained by result, the coefficient of shrinkage of two grey old material mortars first increases to reduce again with the increase of cement dose to be increased again
Greatly, with from the point of view of the coefficient of shrinkage, 0-4.75mm fine aggregates are stablized broken using the recycled cement of two-ash broken stones old material for comprehensive drying shrinkage strain
The best cement dose that Shi Yi is selected is 4.5% or so.
Claims (7)
1. a kind of determining lime, fine coal ash broken stones constriction coefficient determine the mixture of method, it is characterised in that including following masses
Match ratio mixture.
2. a kind of pass through fine aggregate evaluation lime, the method for flyash stabilization gravel shrinkage, it is characterised in that including as follows
Specific steps：
Step 1：It determines that lime, flyash stationary level are matched and optimum moisture content and maximum dry density, determines lime, flyash
Dosage；
Step 2：According to the ratio of fine aggregate in grading, the agent of lime, flyash in lime, fly-ash mortar test specimen is extrapolated
Amount and water content；
Step 3：The test specimen of forming health 6d at the standard conditions, health in the water bath with thermostatic control for immersing 20 DEG C in last 1 day；
Step 4：After health is complete, as in retract chamber after surface moisture is dried, 3 in 6 identical test specimens are placed on branch
Contraction distortion is measured with amesdial on seat, other 3 are put under the same conditions, is weighed at regular intervals, with average
Value is counted；
Step 5：Cylinder specimen contraction strain and constriction coefficient are calculated, and then to comment by the percentage of water loss that measures and shrinkage
Valency lime, flyash stablize the shrinkage of graded broken stone.
3. it is as claimed in claim 2 it is a kind of by fine aggregate evaluate lime, flyash stabilization gravel shrinkage method,
It is characterized in that：In step 1, by《Highway road surface construction technology detailed rules and regulations》Recommended stage in JTG/T F20-2015 is with determining
The grading of lime, fine coal ash broken stones utilizes《Highway engineering stabilized with inorganic binder testing of materials regulation》The nothings of JTG E51-2009
Machine binder stabilizing material compaction test method determines lime, fine coal ash broken stones optimum moisture content and maximum dry density, selectes stone
Ash, flyash dosage.
4. it is as claimed in claim 2 it is a kind of by fine aggregate evaluate lime, flyash stabilization gravel shrinkage method,
It is characterized in that：In step 2, according to the ratio of fine aggregate in determining lime, flyash macadam gradating, extrapolate molding lime,
Lime, the dosage of flyash and water content in fly-ash mortar test specimen.
5. it is as claimed in claim 2 it is a kind of by fine aggregate evaluate lime, flyash stabilization gravel shrinkage method,
It is characterized in that：In step 3, test specimen is made according to static pressure method, static pressure rate is 1mm/min, by the lime of forming, flyash
It is put into standard curing box health after mortar specimen bagging, standard curing condition is T=20 DEG C, humidity >=95%.
6. it is as claimed in claim 2 it is a kind of by fine aggregate evaluate lime, flyash stabilization gravel shrinkage method,
It is characterized in that：In step 4, the range of amesdial is 0-1mm, and precision 0.001mm dries surface water after test specimen health is complete, until
In retract chamber, it is 20 DEG C ± 1 DEG C to shrink room temperature, and relative humidity is 60% ± 5%, with stent by two dial holders in test specimen top surface
The both ends of a certain diametrical position.
7. it is as claimed in claim 2 it is a kind of by fine aggregate evaluate lime, flyash stabilization gravel shrinkage method,
It is characterized in that：In step 5, through test the data that measure by《Highway engineering stabilized with inorganic binder testing of materials regulation》JTG
The Chinese styles of E51-2009（T 0854-1）~ formula（T 0854-5）Processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711166562.3A CN108254535A (en) | 2017-11-21 | 2017-11-21 | It is a kind of to pass through fine aggregate evaluation lime, the method for flyash stabilization gravel shrinkage |
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| CN201711166562.3A CN108254535A (en) | 2017-11-21 | 2017-11-21 | It is a kind of to pass through fine aggregate evaluation lime, the method for flyash stabilization gravel shrinkage |
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| CN108254535A true CN108254535A (en) | 2018-07-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966383A (en) * | 2017-11-22 | 2018-04-27 | 北京建筑大学 | A kind of cement stabilized macadam shrinkage performance test method based on small specimen |
| CN108101479A (en) * | 2017-11-22 | 2018-06-01 | 北京建筑大学 | A kind of lime based on small specimen, fine coal ash broken stones shrinkage performance test method |
| CN110779829A (en) * | 2019-10-21 | 2020-02-11 | 华南理工大学 | Tobacco sheet hair and powder falling quantitative detection device |
| CN116148452A (en) * | 2023-04-20 | 2023-05-23 | 山东高速明董公路有限公司 | Cement stabilized macadam volume shrinkage measuring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503258A (en) * | 2011-10-15 | 2012-06-20 | 交通运输部公路科学研究所 | High-intensity low-crack cement-stabilized graded macadam and preparation method thereof |
| CN105819784A (en) * | 2016-03-15 | 2016-08-03 | 王壹帆 | Cement mortar mixed material for stabilizing macadam pavement base and construction method thereof |
-
2017
- 2017-11-21 CN CN201711166562.3A patent/CN108254535A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503258A (en) * | 2011-10-15 | 2012-06-20 | 交通运输部公路科学研究所 | High-intensity low-crack cement-stabilized graded macadam and preparation method thereof |
| CN105819784A (en) * | 2016-03-15 | 2016-08-03 | 王壹帆 | Cement mortar mixed material for stabilizing macadam pavement base and construction method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 交通部公路科学研究院: "公路工程无机结合料稳定材料试验规程JTG E51—2009)", 《中华人民共和国行业标准》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966383A (en) * | 2017-11-22 | 2018-04-27 | 北京建筑大学 | A kind of cement stabilized macadam shrinkage performance test method based on small specimen |
| CN108101479A (en) * | 2017-11-22 | 2018-06-01 | 北京建筑大学 | A kind of lime based on small specimen, fine coal ash broken stones shrinkage performance test method |
| CN110779829A (en) * | 2019-10-21 | 2020-02-11 | 华南理工大学 | Tobacco sheet hair and powder falling quantitative detection device |
| CN116148452A (en) * | 2023-04-20 | 2023-05-23 | 山东高速明董公路有限公司 | Cement stabilized macadam volume shrinkage measuring device |
| CN116148452B (en) * | 2023-04-20 | 2023-07-07 | 山东高速明董公路有限公司 | Cement stabilized macadam volume shrinkage measuring device |
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