CN109211705A - A kind of steady material washout test device of water - Google Patents
A kind of steady material washout test device of water Download PDFInfo
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- CN109211705A CN109211705A CN201810978120.7A CN201810978120A CN109211705A CN 109211705 A CN109211705 A CN 109211705A CN 201810978120 A CN201810978120 A CN 201810978120A CN 109211705 A CN109211705 A CN 109211705A
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- water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
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Abstract
The invention discloses a kind of steady material washout test devices of water, punch panel including being located at the bottom of the counterweight, the lower section of the punch panel is equipped with the compaction cylinder for placing the steady material of water, casing is installed at the top of the compaction cylinder, compaction cylinder is placed in outer cylinder, compaction cylinder is connect by the sample stabiliser bar of two sides with outer cylinder, sealing cover is connected at the top of the outer cylinder, the impact plate surface is equipped with several holes, water flows to the steady material surface of water by the hole of punch panel during test, when preventing frequency too fast, surrounding moisturizing is not in time, water circle device is also connected in punch panel.Sample preparation of the invention uses the steady vibration moulding of water, preparation is simple, flexible to operation, can farthest avoid the interference in maintenance processes to the steady material of water using compaction cylinder maintenance, washout test has good research value, which has fabulous application prospect.
Description
Technical field
The present invention relates to Geotechnical Engineering and materials science field more particularly to a kind of steady material washout test dresses of water
It sets.
Background technique
The steady material of water is typically used as face semi-rigid type base, has the characteristics that intensity is high, diffusion-induced stress is strong and low cost, has
Certain plate body, tensile strength, fatigue resistance and good water stability matter, cement treated material are widely used in cement road
Face and bituminous pavement.According to display, by the end of the year 2016, Chinese Highway mileage reaches 469.63 ten thousand kilometers.Wherein 85% or more makes
It is the semi-rigid type base with cement, lime, flyash etc. for binder.And cement stabilized soil material is in base, underlayment
It is most widely used.
For climate in china based on the torrid zone, subtropical monsoon climate, precipitation is sufficient.There is data to suggest that Chinese road engineering
Moisture Damage phenomenon is universal.Meanwhile the load function influences such as heavy duty and temperature that exceed the speed limit, exacerbate road water damage disaster, serious shadow
Usage capability of road and service life are rung.Pavement on Semi-rigid Type Base constitution water damages the prospecting of disease engineering example and discloses with analysis, road surface
Base's water first surely destroys, then is diffused into top course, and the water damage disease for eventually leading to entire pavement structure is destroyed, and becomes most main
Want failure mode.The structure sheaf that cement treated material is formed a connecting link as road, to a certain degree control road service life and operation matter
Amount.The volume stability energy of the steady semi-rigid material of water and contraction strain cause cement treated material contraction fissure to crack, and cause pitch
The reflective crack road face structure base on road surface damages.Environment agent function Characteristics and road face design feature, can not avoid completely
The part backwater of face structured base layer surface is gathered and diffusion phenomena, therefore wheel load exciting load and temperature movement repeated action, shape
Super quiet pore pressure at cement treated material part flowing pressure ringing and its material part is gathered, in recent years this breakoff phenomenon
Be referred to as the steady material of water washes away problem.Local scour effect inside road structure, can lead to structure sheaf cementitious material and bone
Material, cementing damage between aggregate and aggregate cause the diseases such as isolation of gathering materials.
The research emphasis of traditional steady material of water is intensity and its problem of Cracking, and has tended to be mature at present, but for water
The performance of flushing of steady material is evaluated, so far ununified experimental rig, and more the test method of standard and evaluation are not marked
It is quasi-.Therefore, in the steady semi-rigid sub-base material research of water, semi-rigid material base, which washes away damage mechanisms, test evaluation and stablizes, to be controlled
The research such as method processed becomes and extends pavement durability, improves pavement quality and reduce the long-term Journal of Sex Research of road maintenance maintenance cost
Project.Corresponding experimental study equipment is also urgently developed.
Summary of the invention
Goal of the invention: it is an object of the present invention to provide a kind of steady material washout test devices of water, can be suitable for the steady material of water
The Laboratory Evaluation of performance of flushing, and foundation can be provided for the steady semi-rigid material engineer application of water.
Technical solution: the present invention includes the punch panel positioned at the bottom of the counterweight, and the lower section of the punch panel, which is equipped with, places water
The compaction cylinder of steady material, the impact plate surface are equipped with several holes, are connected with water circle device in punch panel, described hits
Real cylinder is placed in outer cylinder, and compaction cylinder is connect by the sample stabiliser bar of two sides with outer cylinder, is equipped with sealing at the top of the outer cylinder
Lid.
Casing is installed at the top of the compaction cylinder, for protecting sample edge not destroyed by pressure, forms properer reality
The failure mode of the scouring effect on border.
The diameter of the punch panel is less than casing internal diameter, the frictional resistance between punch panel and casing is prevented, more for side
Just the water of the steady material upper surface of water is flowed into and out by the gap between punch panel surrounding and casing.
The internal diameter of the sealing cover is less than the diameter of punch panel, prevents water spillage from turn resulting in and washes away material loss.
Water is marked in the outer cylinder, water level depth can flood the steady material of water.
The water circle device includes back-flow preventer, water pump and filter, for the water in outer cylinder to be introduced impact
Plate.
One end of the back-flow preventer is connect with punch panel, and the other end is connected to the filter by water pump, passes through water pump
Water in outer cylinder is introduced into punch panel, ensure that the water abundance of the steady material surface of water during test.
The weight of the ballast box can be adjusted, so that the pressure of washing away of the steady material surface of water is 0.2~0.8MPa.
The utility model has the advantages that sample preparation of the invention uses the steady vibration moulding of water, preparation is simple, flexible to operation, using hitting reality
Cylinder maintenance can farthest avoid the interference in maintenance processes to the steady material of water, and washout test has good academic research valence
Value, the device have fabulous application prospect.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is partial enlarged view of the invention；
Fig. 3 is punch panel top view of the invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As depicted in figs. 1 and 2, the present invention include the steady material 1 of water, ballast box 2, casing 3, sample stabiliser bar 4, compaction cylinder 5,
It is punch panel 6, water 7, outer cylinder 8, cushion block 9, bolt 10, outer cylinder sealing ring 11, fixed link 12, outer cylinder stabiliser bar 13, filter 14, close
Capping 15, back-flow preventer 16 and water pump 17.Motor and controller are connected at the top of ballast box 2,2 bottom of ballast box, which is connected with, to be hit
It re-packs 6, drives punch panel 6 to move up and down by ballast box 2, and then strike to the steady material of water.The weight of ballast box 2
It can adjust, so that the pressure of washing away of the steady material surface of water is 0.2~0.8MPa.
The lower section of punch panel 6 is equipped with compaction cylinder 5, is placed with cushion block 9 inside compaction cylinder 5,9 surface of cushion block is placed with the steady material of water
Material 1, the top of compaction cylinder 5 is cased with casing 3, for protecting sample edge not destroyed by pressure, forms properer actual wash away
The failure mode of effect.Compaction cylinder 5 and cushion block 9 are placed in outer cylinder 8, pass through the sample stabiliser bar 4 and outer cylinder 8 of 5 two sides of compaction cylinder
Connection, sample stabiliser bar 4 help to ensure that the vertical stress of sample.Water 7 is marked in outer cylinder 8, water level depth can flood the steady material of water
Material 1.Outer cylinder 8 is fixed in fixed link 12 by the outer cylinder stabiliser bar 13 of two sides.It is connected with sealing cover 15 at the top of outer cylinder 8, seals
The internal diameter of lid 15 is less than the diameter of punch panel 6, prevents water 7 from splashing out, in turn results in and wash away material loss.Water is made using compaction cylinder 5
Using vibration compaction test at directly conserving together with compaction cylinder 5 after sample, band cylinder carries out washout test utmostly to be avoided steady material 1
Sample is disturbed.
The surface of punch panel 6 is equipped with several holes, and water 7 flows to the steady material 1 of water by the hole of punch panel 6 during test
Surface, when preventing frequency too fast, surrounding moisturizing not in time, so as to do high-frequency test, ensure that test effect.Punch panel
6 diameter is less than 3 internal diameter of casing, the frictional resistance between punch panel 6 and casing 3 is prevented, more in order to facilitate table on the steady material 1 of water
The water in face is flowed into and out by the gap between 6 surrounding of punch panel and casing 3.Punch panel 6 can make to try in specimen surface vibration
There are sample " washing away " and " pump is inhaled " double effects to facilitate water 7 to enter and leave in specimen surface prevented also from frictional resistance.
Water circle device, including back-flow preventer 16, water pump 17 and filter 14, anti-return are also connected in punch panel 6
One end of device 16 connects punch panel 6, and the other end is connect by water pump 17 with filter 14, will be in outer cylinder 8 by water pump 17
Water 7 introduces punch panel 6, ensure that the water abundance on steady 1 surface of material of water during test.The bottom of outer cylinder 8 passes through bolt 10
It is connect with the stack shell of outer cylinder 8, and is equipped with sealing ring 11 in junction.The outer cylinder 8 of sealing not only has water storage function, it is important that receives
Collecting the steady material of water washed away will be taken out with making the two-level appraisement of performance of flushing after the completion of test after the static a period of time of outer cylinder 8
Material drying, using sample scour depth as level-one evaluation, erosion quantity is as two-level appraisement, analysis method specification, as a result more
Accurately.
Test 1: the steady coral semi-rigid sub-base material washout test of water
(1) sample makes: the steady material of water puts compaction cylinder band cushion block with vibration compaction test apparatus sample preparation is used after getting ready together
Enter standard curing box maintenance, progress washout test after age reaches；
(2) component assembles: installation sealed outer cylinder, and is fixed in fixed link using outer cylinder stabiliser bar, and water will be housed
The compaction cylinder of steady material sample is put into outer cylinder, connects sample stabiliser bar, can prevent sample during test from deviateing, put on shield
Cylinder, protection materials edge add water not have 3 centimetres or so of the steady material of water, adjust time and the frequency of control cabinet, and selection is suitably matched
Loaded van weight opens water pump, starts to test after installing sealing cover；
(3) analysis of experiments: sample vibrate after, take out compaction cylinder, measurement the steady material surface limiting scour of water and
Minimum scour depth makees the steady material performance of flushing index level-one evaluation of water, the water in outer cylinder is stood a period of time, taking-up is washed away
The steady material of the water fallen, drying weighing, as performance of flushing index two-level appraisement, can also obtain punching compared with original material weight
Brush weight ratio index.
Test 2: the steady material of water is without the washout test under confining pressure
(1) sample makes: the steady material of water is with, using vibration compaction test apparatus sample preparation, demoulding is put into curing box maintenance one after getting ready
Washout test is carried out after determining age；
(2) component assembles: installation sealed outer cylinder, and is fixed in fixed link using outer cylinder stabiliser bar, by the steady material of water
Material be placed on the cushion block in outer cylinder, internal stability bar directly connects with the steady material of water, be prevented from test during sample it is inclined
From, add water not have 3 centimetres or so of the steady material of water, adjust time and the frequency of control cabinet, selects suitable ballast box weight, opening
Water pump starts to test after installing sealing cover；
(3) analysis of experiments: sample vibrate after, take out compaction cylinder, measurement the steady material surface limiting scour of water and
Minimum scour depth makees the steady material performance of flushing index level-one evaluation of water；Water in outer cylinder is stood into a period of time, taking-up is washed away
The steady material of the water fallen, drying weighing, as performance of flushing index two-level appraisement, can also obtain punching compared with original material weight
Brush weight ratio index.
Present invention test 2 is with the main difference for testing 1, tests 1 sample and is well protected, including casing
And compaction cylinder, during test, sample only has upper surface by souring；Test 2 releases sample confining pressure, and sample is completely sudden and violent
Dew in water, under practical mal-condition have more similitude.
Claims (8)
1. a kind of steady material washout test device of water, the punch panel (6) including being located at ballast box (2) bottom, the punch panel (6)
Lower section be equipped with place the steady material of water (1) compaction cylinder (5), which is characterized in that punch panel (6) surface be equipped with several holes
Hole is connected with water circle device in punch panel (6), and the compaction cylinder (5) is placed in outer cylinder (8), and compaction cylinder (5) passes through two sides
Sample stabiliser bar (4) connect with outer cylinder (8), sealing cover (15) are installed at the top of the outer cylinder (8).
2. the steady material washout test device of a kind of water according to claim 1, which is characterized in that the compaction cylinder (5)
Top is equipped with casing (3).
3. the steady material washout test device of a kind of water according to claim 1, which is characterized in that the punch panel (6)
Diameter is less than the internal diameter of casing (3).
4. the steady material washout test device of a kind of water according to claim 1, which is characterized in that the sealing cover (15)
Internal diameter is less than the diameter of punch panel (6).
5. the steady material washout test device of a kind of water according to claim 1, which is characterized in that in the outer cylinder (8)
It is marked with water (7), water level depth can flood the steady material of water (1).
6. the steady material washout test device of a kind of water according to claim 1, which is characterized in that the water circle device
Including back-flow preventer (16), water pump (17) and filter (14).
7. the steady material washout test device of a kind of water according to claim 6, which is characterized in that the back-flow preventer
(16) one end is connect with punch panel (6), and the other end is connect by water pump (17) with filter (14).
8. the steady material washout test device of a kind of water according to claim 1, which is characterized in that the ballast box (2)
Weight can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978120.7A CN109211705A (en) | 2018-08-27 | 2018-08-27 | A kind of steady material washout test device of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978120.7A CN109211705A (en) | 2018-08-27 | 2018-08-27 | A kind of steady material washout test device of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109211705A true CN109211705A (en) | 2019-01-15 |
Family
ID=64989197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810978120.7A Pending CN109211705A (en) | 2018-08-27 | 2018-08-27 | A kind of steady material washout test device of water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109211705A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570766Y (en) * | 2002-09-26 | 2003-09-03 | 沙爱民 | Road material scouring tester |
| CN101210870A (en) * | 2007-12-24 | 2008-07-02 | 哈尔滨工业大学 | Test device for asphalt mixture resisting moving water scouring |
| CN101907548A (en) * | 2010-07-20 | 2010-12-08 | 申爱琴 | Bituminous pavement material hydrodynamic pressure washing tester |
| CN102706760A (en) * | 2012-06-26 | 2012-10-03 | 长安大学 | Bituminous mixture flowing water scouring instrument |
| CN203299068U (en) * | 2013-05-31 | 2013-11-20 | 长安大学 | Anti-washout test device for inorganic binder stabilizing material |
| CN104483257A (en) * | 2014-12-27 | 2015-04-01 | 长安大学 | Road cement concrete flowing water washout tester and use method thereof |
| CN105203421A (en) * | 2015-10-19 | 2015-12-30 | 长安大学 | Road material washing test device adopting electromagnetic driving |
| CN207751779U (en) * | 2018-02-06 | 2018-08-21 | 山东建筑大学 | A kind of dynamic water washout test instrument of semi-rigid type base |
-
2018
- 2018-08-27 CN CN201810978120.7A patent/CN109211705A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570766Y (en) * | 2002-09-26 | 2003-09-03 | 沙爱民 | Road material scouring tester |
| CN101210870A (en) * | 2007-12-24 | 2008-07-02 | 哈尔滨工业大学 | Test device for asphalt mixture resisting moving water scouring |
| CN101907548A (en) * | 2010-07-20 | 2010-12-08 | 申爱琴 | Bituminous pavement material hydrodynamic pressure washing tester |
| CN102706760A (en) * | 2012-06-26 | 2012-10-03 | 长安大学 | Bituminous mixture flowing water scouring instrument |
| CN203299068U (en) * | 2013-05-31 | 2013-11-20 | 长安大学 | Anti-washout test device for inorganic binder stabilizing material |
| CN104483257A (en) * | 2014-12-27 | 2015-04-01 | 长安大学 | Road cement concrete flowing water washout tester and use method thereof |
| CN105203421A (en) * | 2015-10-19 | 2015-12-30 | 长安大学 | Road material washing test device adopting electromagnetic driving |
| CN207751779U (en) * | 2018-02-06 | 2018-08-21 | 山东建筑大学 | A kind of dynamic water washout test instrument of semi-rigid type base |
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Application publication date: 20190115 |