CN106525534B - A kind of water absorber and test method for the test of rotary compactor cold renewal - Google Patents
A kind of water absorber and test method for the test of rotary compactor cold renewal Download PDFInfo
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- CN106525534B CN106525534B CN201610996931.0A CN201610996931A CN106525534B CN 106525534 B CN106525534 B CN 106525534B CN 201610996931 A CN201610996931 A CN 201610996931A CN 106525534 B CN106525534 B CN 106525534B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
A kind of water absorber and test method for the test of rotary compactor cold renewal, belong to Communication and Transportation Engineering technical field, the water absorber, including identical first disk of size and the second disk, first disk is supported by pillar with the second disk and is connect, the both ends of pillar are separately connected the center of circle of the first disk and the second disk, filled with water suction filler between the first disk and the second disk.Using the test method of the water absorber: surveying water absorber gross mass m0；Water absorber level is placed on the chassis in rotary compactor mold；It is put into cold recycled asphalt mixture in mold, and mold is put into the compacting chamber of rotary compactor；Installation mold top cover；Press start button；Off-test demoulds the marshal piece in mold；Survey water absorber gross mass m1；By m1With m0Make the difference, tested in water percolating capacity；According to the water percolating capacity during test, the moisture content of asphalt is adjusted, is repeated the above steps to the ideal test specimen of acquisition.
Description
Technical field
The invention belongs to Communication and Transportation Engineering technical fields, test more particularly to one kind for rotary compactor cold renewal
Water absorber and test method.
Background technique
The maintenances such as surface evenness, intensity, damaged degree and coefficient of sliding resistance of being satisfied the need year by year according to highway maintenance department evaluation refers to
Target evaluation result shows, the certain time limit of usual road occupation just needs to overhaul once, but with the growth of the volume of traffic, so that
This time limit standard reduces year by year, especially the increase of Heavy Traffic in recent years, even more accelerates the damage on road surface.Therefore, road
Plane materiel material regeneration techniques also rapidly develop therewith.Pavement recycling technology is all and the and hot recycling based on hot recycling all the time
Compare, cold recycling technology have carried out under room temperature, a variety of advantages such as at low cost, be increasingly taken seriously in recent years, thus with it is cold
It regenerates relevant test type to be consequently increased, the use of rotary compactor molding cold renewal marshal piece is exactly one of them.
Rotary compactor is used to be compacted test specimen, can accurately simulate field compaction state, evaluates the closely knit feature of asphalt,
Design, quality control and assurance for asphalt.But the rotary compactor that present laboratory uses is mainly
For doing hot material test, it will appear some problems when carrying out cold burden correlation test using it, such as using cold recycled asphalt
When mixture is tested, the content of water is very important in mixture, mainly by the water in outer water mixing, emulsified asphalt and again
Water in raw asphalt is constituted, these water have the exudation of part water when being tested using rotary compactor.Work as exudation
The amount of water is more, and when can not be fully absorbed by the matched blotting paper of laboratory apparatus, unabsorbed water seepage is inevitably
The performance of laboratory apparatus is had an impact or even laboratory apparatus is damaged, this allows for testing crew for Protection instrument
Device, and the test of the cold recycled asphalt mixture of different moisture content can not be carried out.If purchasing new equipment thus, volume will lead to
Outer investment, makes increased costs.For this reason, it may be necessary to which a kind of new construction improved for existing rotary compactor is above-mentioned to solve
Problem.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of water suction dress for the test of rotary compactor cold renewal
It sets and test method, the water absorber can effectively absorb the water seepage in cold recycled asphalt mixture, prevent exudation Water Damage real
Instrument is tested, and structure is simple, it is easy to use, it is low in cost, destruction will not be generated to existing instrument and equipment.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of water absorber for the test of rotary compactor cold renewal, including identical first disk of size and the second circle
Disk, first disk, which is supported with the second disk by pillar, to be connect, and the both ends of the pillar are separately connected the first disk
With the center of circle of the second disk, water suction filler is filled between first disk and the second disk.
The pillar and the first disk and the second disk are formed using integral cast.
The pillar and the first disk and the second disk are stainless steel material.
The diameter of first disk is less than the internal diameter of rotary compactor mold.
The outer diameter of the water suction filler is greater than the diameter of first disk.
The water suction filler is using split type.
The water suction filler uses bibulous polyvinyl alcohol absorbent wool.
It include following step using a kind of test method of the water absorber for the test of rotary compactor cold renewal of the present invention
It is rapid:
Step 1: the gross mass m of water absorber is measured0；
Step 2: water absorber level is placed on the chassis in rotary compactor mold；
Step 3: it is put into ready cold recycled asphalt mixture in mold, and mold is put into rotary compactor
It is compacted intracavitary, and the mold is fixed with intracavitary fixture is compacted, close compacting chamber door；
Step 4: installation mold top cover, and be locked, prepare test；
Step 5: pressing start button, starts to test；
Step 6: the mold top cover is opened in off-test, and the marshal piece in mold is demoulded, and obtains Marshall
Test specimen；
Step 7: water absorber, the gross mass m of the water absorber after measurement test are taken out1；
Step 8: the m that will be measured in step 71With the m measured in step 10Make the difference, tested in infiltration
Water, and then the moisture content by calculating acquisition cold recycled asphalt mixture；
Step 9: according to the water percolating capacity during test, adjusting the moisture content of cold recycled asphalt mixture, later, repeats
Step 1 until obtaining the test specimen of perfect condition, and records containing for the cold recycled asphalt mixture for making the test specimen to step 8
Water rate.
Beneficial effects of the present invention:
The present invention has supplied a kind of water absorber and test method for the test of rotary compactor cold renewal, is using rotation
When compactor carries out cold renewal test, mixture has water exudation during gyratory compaction, and water seepage passes through mould inner wall
Gap exudation between water absorber, and effectively absorbed by the water suction filler filled in water absorber, avoid water seepage
It oozes out from the gap on mold chassis and is damaged caused by test apparatus.And the water absorber mechanism is simple, easy to use, cost
It is cheap, without changing original construction of instrument.And when being tested using the water absorber, the water suction of test front and back can be passed through
The variation of installation weight tested in water percolating capacity, and then more can accurately calculate test used in cold renewal drip
The moisture content of green mixture.
Detailed description of the invention
Fig. 1 is that structure of the present invention for the water absorber and rotary compactor mold of the test of rotary compactor cold renewal is shown
It is intended to；
Fig. 2 is structural schematic diagram of the present invention for the water absorber of rotary compactor cold renewal test；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the B-B cross-sectional view of Fig. 2；
In figure: the first disk of 1-, the second disk of 2-, 3- pillar, 4- water suction filler, 5- mold, the chassis 6-.
Specific embodiment
With reference to the accompanying drawing by taking American-European the earth AFG2C type rotary compactor as an example, the present invention is done further specifically
It is bright.
As shown in Figures 1 to 4, a kind of water absorber for the test of rotary compactor cold renewal, belongs to communications and transportation work
Journey technical field, for absorbing the exudation in cold recycled asphalt mixture when carrying out cold renewal test using rotary compactor
Water prevents exudation Water Damage laboratory apparatus.
Water absorber provided by the present invention for the test of rotary compactor cold renewal includes identical first disk 1 of size
With the second disk 2, because water absorber need to be placed in the mold 5 of rotary compactor, the diameter of the first disk 1 is less than rotation
Turn the internal diameter of compactor mold 5, in the present embodiment, the diameter of the first disk 1 is 100mm, with a thickness of 5mm, in other implementations
In example, the diameter of the first disk 1 can be selected according to the internal diameter of specific mold 5, need to only be slightly less than 5 internal diameter of mold.
First disk 1 is supported by pillar 3 with the second disk 2 and is connect, and the size of pillar 3 is higher, and absorb water filler 3
Height it is also higher, also better to the assimilation effect of water seepage, but when due to being tested on rotary compactor, the water suction
Device can bear the effect of torque together with test specimen, therefore, if the size of pillar 3 is excessively high, in the case where bearing torque effect
It is also easier to damage, reduce the service life, therefore, in the present embodiment, it is highly 10mm that the diameter of pillar 3, which is 20mm,.Pillar
3 both ends are separately connected the center of circle of the first disk 1 and the second disk 2, to guarantee that the stress of water absorber in use is flat
Weighing apparatus.
In the present embodiment, pillar 3 and the first disk 1 and the second disk 2 are formed using integral cast, to improve water suction
The use intensity of device avoids stress concentration in use process from damaging water absorber, and since water absorber often exists
It is used in aqueous environment, therefore pillar 3 and the first disk 1 and the second disk 2 are all made of stainless steel material, so as to guarantee
Under the premise of water absorber use intensity, and improve the antirust and resistance to corrosion of water absorber.
Filled with water suction filler 4 between first disk 1 and the second disk 2, water suction filler 4 can be recycled in test
Reusability, it is more environmentally-friendly for blotting paper used in current test.It preferably absorbs water to reach in test
Effect prevents water to be exuded on test apparatus, water suction filler 4 outer diameter be greater than the first disk 1 diameter, so as to mould
The inner wall of tool 5 is in close contact.Due to water suction filler 4 it is soft, will not 5 inner wall of mold to rotary compactor cause
Any damage, and during marshal piece demoulding, water absorber moves together with marshal piece, and absorb water filler 4
The moisture that test specimen during test can be remained on 5 inner wall of mold absorbs again, makes cold recycled asphalt mixture moisture content
It is more accurate to calculate.In the present embodiment, the outer diameter of water suction filler 4 is 101mm, internal diameter 20mm, is highly 10mm, material
Matter uses the stronger polyvinyl alcohol absorbent wool of water imbibition.To keep installation and replacement more convenient, water suction filler 4 is using seperated
Formula is symmetrically installed using two halves formula in the present embodiment.
The present invention also provides it is a kind of using it is above-mentioned for rotary compactor cold renewal test water absorber test method,
By taking American-European the earth AFG2C type rotary compactor as an example, include the following steps:
Step 1: cleaning rotary compactor mold prepares cold recycled asphalt mixture needed for testing；
Step 2: the gross mass m of water absorber is measured0；
Step 3: water absorber level is placed on the chassis 6 in rotary compactor mold 5, the first disk 1 and mold
There are gaps for 5 inner wall, and absorb water filler 4 and the close contact of 5 inner wall of mold；
Step 4: being put into ready cold recycled asphalt mixture in mold 5, rotary compactor playbacked, and by mould
The compacting that tool 5 is put into rotary compactor is intracavitary, it is ensured that mold 5 is placed steady and withstands and be compacted intracavitary pilot pin, and with being compacted
Intracavitary fixture fixes to clamp mold 5 on rotating base, closes compacting chamber door；
Step 5: installation mold top cover rotates clockwise mold top cover in place, until mold top cover sinks and pushes up completely
Bolt in place, and locked mold top cover with clamp lever, prepare test；
Step 6: setting test parameters presses start button, starts to test；
Step 7: mold top cover is opened in off-test, and the marshal piece in mold 5 is demoulded, and obtains Marshall examination
Part；
Step 8: water absorber, the gross mass m of the water absorber after measurement test are taken out1；
Step 9: the m that will be measured in step 81With the m measured in step 20Make the difference, tested in infiltration
Water, and then the moisture content by calculating acquisition cold recycled asphalt mixture；
Step 10: according to the water percolating capacity during test, adjusting the moisture content of cold recycled asphalt mixture, later, repeats
Step 1 until obtaining the test specimen of perfect condition, and records containing for the cold recycled asphalt mixture for making the test specimen to step 9
Water rate.When repeating to test, equipment is damaged to ensure not have water exudation, it is proposed that replace dry water suction filler
4 are tested, and replaced water suction filler 4 can continue to use after being cleaned, being dried.
Step 11: arranging experimental facilities, and used water suction filler 4 be dried, convenient for examination next time
Test middle use.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, it will be appreciated by those skilled in the art that technical solution of the present invention can be modified or be waited
With replacement, without departing from the objective and range of the technical program, should all cover in scope of the presently claimed invention.
Claims (5)
1. a kind of test method of the water absorber for the test of rotary compactor cold renewal, it is characterised in that: use a kind of use
In the water absorber of rotary compactor cold renewal test, described device includes identical first disk of size and the second disk, institute
It states the first disk and is supported with the second disk by pillar and is connect, the both ends of the pillar are separately connected the first disk and second
The center of circle of disk, pillar and the first disk and the second disk are using integral cast molding, pillar and the first disk and the second circle
Disk is stainless steel material, filled with water suction filler between first disk and the second disk；
A kind of test method of water absorber for the test of rotary compactor cold renewal, includes the following steps:
Step 1: the gross mass m0 of water absorber is measured；
Step 2: water absorber level is placed on the chassis in rotary compactor mold；
Step 3: being put into ready cold recycled asphalt mixture in mold, and mold is put into the compacting of rotary compactor
It is intracavitary, and fixed the mold with intracavitary fixture is compacted, close compacting chamber door；
Step 4: installation mold top cover, and be locked, prepare test；
Step 5: pressing start button, starts to test；
Step 6: the mold top cover is opened in off-test, and the marshal piece in mold is demoulded, and obtains marshal piece；
Step 7: water absorber, the gross mass m1 of the water absorber after measurement test are taken out；
Step 8: the m1 measured in step 7 and the m0 measured in step 1 are made the difference, tested in infiltration
Amount, and then the moisture content by calculating acquisition cold recycled asphalt mixture；
Step 9: according to the water percolating capacity during test, adjusting the moisture content of cold recycled asphalt mixture, later, repeats step
One, to step 8, until obtaining the test specimen of perfect condition, and records the moisture content for making the cold recycled asphalt mixture of the test specimen.
2. a kind of test method of water absorber for the test of rotary compactor cold renewal according to claim 1,
Be characterized in that: the diameter of first disk is less than the internal diameter of rotary compactor mold.
3. a kind of test method of water absorber for the test of rotary compactor cold renewal according to claim 1,
Be characterized in that: the outer diameter of the water suction filler is greater than the diameter of first disk.
4. a kind of test method of water absorber for the test of rotary compactor cold renewal according to claim 1,
Be characterized in that: the water suction filler is using split type.
5. a kind of test method of water absorber for the test of rotary compactor cold renewal according to claim 1,
Be characterized in that: the water suction filler uses bibulous polyvinyl alcohol absorbent wool.
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| CN201610996931.0A CN106525534B (en) | 2016-11-11 | 2016-11-11 | A kind of water absorber and test method for the test of rotary compactor cold renewal |
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| CN107655713A (en) * | 2017-09-22 | 2018-02-02 | 成都南红鞋业有限公司 | Suitable for the sampling mechanism of fibrous material water imbibition detection |
| CN107655714A (en) * | 2017-09-22 | 2018-02-02 | 成都南红鞋业有限公司 | For detecting the sampling apparatus of fibrous material water imbibition |
| CN112834369A (en) * | 2020-12-30 | 2021-05-25 | 江西省交通科学研究院 | Method for determining reasonable water content of solid waste doped road base material |
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