CN110196189A - A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device and method - Google Patents
A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device and method Download PDFInfo
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- CN110196189A CN110196189A CN201910596980.9A CN201910596980A CN110196189A CN 110196189 A CN110196189 A CN 110196189A CN 201910596980 A CN201910596980 A CN 201910596980A CN 110196189 A CN110196189 A CN 110196189A
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- 239000004567 concrete Substances 0.000 title claims abstract description 33
- 230000001133 acceleration Effects 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005057 refrigeration Methods 0.000 claims abstract description 17
- 238000002474 experimental method Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 11
- JLQUFIHWVLZVTJ-UHFFFAOYSA-N carbosulfan Chemical compound CCCCN(CCCC)SN(C)C(=O)OC1=CC=CC2=C1OC(C)(C)C2 JLQUFIHWVLZVTJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000009938 salting Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000003776 cleavage reaction Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000007017 scission Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 15
- 239000002689 soil Substances 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 239000013535 sea water Substances 0.000 abstract description 3
- 230000036760 body temperature Effects 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 238000013268 sustained release Methods 0.000 abstract description 2
- 239000012730 sustained-release form Substances 0.000 abstract description 2
- 235000002639 sodium chloride Nutrition 0.000 description 19
- 239000010426 asphalt Substances 0.000 description 8
- 238000011160 research Methods 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
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- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
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- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
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- 239000005413 snowmelt Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0224—Thermal cycling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
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- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of salt-it is wet-heat effect under bituminous concrete mechanical property Acceleration study device, including cabinet is located in the box body temperature and humidity automatic recording instrument, refrigeration machine, PCT warm-air drier and the high Accuracy Electronic Balance in portion；Cabinet is internally provided with several brackets, and refrigeration machine, high Accuracy Electronic Balance and PCT warm-air drier are respectively placed on different brackets, is connected with metal probe below temperature and humidity automatic recording instrument；Water inlet pipe passes through the cover board of top of the box, extends to the lower part of cabinet, the bottom of cabinet is also connected with drainpipe；The invention also discloses the experimental methods of the experimental provision.The present invention, come the actual condition of salinity in simulated seawater, salinized soil and sustained release freezing road surface, realizes accelerating ability experiment of bituminous concrete under the influence ofs wet, hot, salinity etc., by salt water to evaluate bituminous concrete durability；Design principle is clear, easily operated and duplication, safety coefficient and measurement accuracy with higher.
Description
Technical field
The present invention relates to technical field of road engineering more particularly to a kind of salt-it is wet-heat effect under bituminous concrete mechanical property
It can Acceleration study device and method.
Background technique
The rainfall of coastal area, sea fog contain sea salt particle in atmosphere, these sea salt particles are by water evaporation and stormy waves
It influences, swims in formation ocean salt mist environment in atmospheric environment.Water mist containing salinity can destroy sticking between asphalt and aggregate
Property, make pitch from the sur-face peeling to gather materials.Bituminous concrete in the corrosive environment of coastal area can be with external environment (salt
Mistiness degree, temperature, humidity etc.) variation drying and watering cycle, temperature cycles and salinity ringing, so that remaining in pitch occurs
Salinity in concrete voids generates crystallization pressure, constantly destroys and corrodes gap mixture nearby, eventually lead to pitch coagulation
The destruction of soil, to cause to seriously affect to the durability of asphalt concrete pavement.In addition, in varieties in saline-alkali areas, saline soil area,
Salt content in roadbed can also be acted on by capillary water constitutes similar influence to bituminous pavement.
Currently, the variation of lower bituminous pavement property is acted on for the round-the-clock factor in saliferous area, mainly for single factors
It carries out.For asphalt under many factors couplings such as bituminous pavement different temperatures, different humidity, different salinity
The research of energy is insufficient.Due to lack salt-it is wet-thermal coupling acts on lower bituminous concrete mechanical property Acceleration study device, Shang Buneng
The coastal Special section true environment factor of comprehensive simulated acts on the situation of change of lower bituminous concrete performance.
In addition, the concentration difference of the temperature of coastal area and saline soil area, humidity and saliferous is larger, so different regions
Bituminous pavement locating for environment also differ widely, how to simulate the true Service Environment of different regions bituminous pavement, research is special
Different area asphalt durability, the proportion design for improving asphalt in different zones are of great significance.
Summary of the invention
In order to solve the above technical problems, the invention discloses a kind of salt-it is wet-heat effect under bituminous concrete mechanical property add
Fast experimental provision and method.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device, including cabinet is located in the box body
Temperature and humidity automatic recording instrument, refrigeration machine, PCT warm-air drier and the high Accuracy Electronic Balance in portion；If the cabinet is internally provided with
Dry bracket, the refrigeration machine, high Accuracy Electronic Balance and PCT warm-air drier are respectively placed on different brackets, and temperature and humidity is automatic
Metal probe is connected with below recorder, the lower section of the high accuracy balance connects a pallet；Water inlet pipe passes through cabinet top
The cover board in portion, extends to the lower part of cabinet, and the bottom of cabinet is also connected with drainpipe.
As present invention further optimization, route inlet and outlet are offered on the cover board of top of the box, with the temperature and humidity
The connected route of automatic recording instrument, refrigeration machine, high accuracy balance is pierced by the route inlet and outlet, and with the power supply outside cabinet
It is connected.
As present invention further optimization, airtight connection between the cover board and cabinet, the route import and export is adopted
It is fixed with seal closure.
As present invention further optimization, the high accuracy balance is accurate to 0.001 gram.
As present invention further optimization, the bracket is made of corrosion resistance material.
As present invention further optimization, the cabinet, lid are all made of transparent glass and are made.
It is a further object to provide a kind of salt-it is wet-heat effect under bituminous concrete mechanical property Acceleration study
Method, using above-mentioned experimental provision, the specific steps are as follows:
1, prepare test specimen
First with marshall compaction instrument production standard marshal piece, and to each parameter of diameter, thickness, quality of test specimen into
Row measures and records；
2, the experimental stage
Each component is attached according to experimental provision, opens water inlet pipe, the good certain density salt of configured in advance is molten
Liquid is passed through in experimental provision, is heated by PTC warm-air drier to box house environment, is heated to experimental temperature, makes in cabinet
After temperature in portion's air is maintained at equilibrium state, then opens lid and the marshal piece of preparation is put into pallet rapidly, and
The quality for reading test specimen under original state, immediately seals experimental provision；
3, experimental record
The variation of marshal piece quality, data of the Temperature and Humidity module in certain time are recorded, in case check, it will examination after experiment
Part takes out from experimental provision, recycles the indexs such as mechanical test equipment measurement cleavage strength, is evaluated by tensile splitting strength
The Decay Law of bituminous concrete tensile strength.
The invention has the advantages that
1, by configuring the salting liquid of various concentration come the ingredient of simulated seawater, coastal area pitch in Practical Project is simulated
The influence of actual environment locating for road surface and snow melt deicer salts to bituminous pavement, it is real using saturated salt solution control envionmental humidity
Now to the simulation of bituminous concrete practical service environment；
2, the temperature of box house is controlled, by PTC warm air equipment to simulate the temperature action of extraneous Various Seasonal；
3, the control that low temperature environment is realized by refrigeration equipment, the practical weather to simulate winter frost region are special
Point；
4, realize that the hot-cool environment of pitch Service Environment replaces work with the alternation of refrigeration equipment by PTC warm air equipment
With.
The present invention by using salt water come simulated seawater, salinized soil and sustained release freezing road surface in salinity actual condition,
Realize that accelerating ability is tested under the influence ofs wet, hot, salinity etc. to bituminous concrete, then normal by modulus, indirect tensile strength etc.
The situation of change of bituminous concrete mechanical property under wet-hot multifactor ringing of salt-is evaluated with mechanics index quantification, in turn
Evaluate bituminous concrete durability；It is tested by simulating a variety of different environment, to research saliferous area asphalt
The research of performance has great importance, and then improves the service life that saliferous area bituminous pavement is on active service, and saves the expense of highway maintenance
With.
Design principle of the present invention is clear, and easily operated and duplication, safety coefficient and measurement accuracy with higher can meet
The scientific research of various research institutes, the scientific research institutions such as institution of higher education needs.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Wherein, 1- power supply；2- temperature and humidity automatic recording instrument；3- refrigeration machine；4- metal probe；5- bracket；6- drainpipe；7-
Route inlet and outlet；8- water inlet pipe；9- high accuracy balance；10-PTC warm-air drier；11- pallet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The invention discloses a kind of salt-it is wet-heat effect under bituminous concrete mechanical property Acceleration study device, simulation
Environment more meets the use environment of saliferous area bituminous pavement, can comprehensively understand pitch coagulation under many factors coupling
The effect of single factors cyclical acceleration also may be implemented to the Acceleration study of performance of asphalt mixture in the situation of change of soil nature energy.
The experimental provision includes cabinet, is located in the box body the temperature and humidity automatic recording instrument 2, refrigeration machine 3, PCT warm-air drier in portion
And high Accuracy Electronic Balance；Above-mentioned cabinet is internally provided with several brackets 5, above-mentioned refrigeration machine 3, high Accuracy Electronic Balance and
PCT warm-air drier is respectively placed on different brackets 5, and the lower section of temperature and humidity automatic recording instrument 2 is connected with metal probe 4, above-mentioned height
The lower section of precision balance 9 connects a pallet, and pallet for placing test specimen during the experiment；Water inlet pipe 8 passes through top of the box
Cover board, extend to the lower part of cabinet, the bottom of cabinet is also connected with drainpipe 6；
PCT warm-air drier can be to heating, the intracorporal temperature of control cabinet in cabinet；Refrigeration machine 3 can reduce the temperature of environmental cabinet
Degree；Temperature and humidity automatic recording instrument 2 can accurately record the temperature and humidity of experimentation by metal probe 4, and by connecting with it
The computer export data connect, for recording the intracorporal epidemic disaster variation range of case；Drainpipe 6 can exclude the salt of box house
Water needs to keep sealing state when not needing draining.
Above-mentioned water inlet pipe 8 can be used for injecting certain density salt water into cabinet, after band salting liquid reach a certain height,
Realization acts on test specimen salt erosion made of asphalt, and salting liquid can be discharged by the drainpipe 6 of bottom after the completion, so anti-
It can reach salt water drying and watering cycle effect again.
Particularly, route inlet and outlet 7 are offered on the cover board of top of the box, with above-mentioned temperature and humidity automatic recording instrument 2, refrigeration
The connected route of machine 3, high accuracy balance 9 is pierced by above-mentioned route inlet and outlet 7, and is connected with the power supply 1 outside cabinet.
Particularly, airtight connection between above-mentioned cover board and cabinet, above-mentioned route, which is imported and exported, to be fixed at 7 using seal closure, with
Anti- external environment has an impact box house.
Particularly, above-mentioned high accuracy balance 9 is accurate to 0.001 gram, improves test specimen mass measurement accuracy.
Particularly, above-mentioned bracket 5 is made of corrosion resistance material, guarantees that bracket will not be led to because of corrosion in experimentation
5 deformations.
Particularly, above-mentioned cabinet, lid are all made of transparent glass and are made, and facilitate internal border during observation experiment
Variation, records the variation of marshal piece quality in a period of time, while saving the warm, wet of the record of temperature and humidity automatic recording instrument 2
Spend environmental data.
In the present invention, it is realized using PCT warm-air drier and refrigeration machine 3 to test specimen institute during salting liquid drying and watering cycle
Locate the adjusting of temperature, to simulate degree of degeneration of the bituminous concrete under salt erosion effect under Various Seasonal environmental condition.
For hot and humid environment, in this experimental box, the heating to environment in case is realized using PTC warm air equipment, together
When temperature sensor is set in the case, the start and stop of PTC warm air equipment are controlled by intelligent controller, realize environment temperature in case
Accurate control, likewise, low temperature environment can be realized by the intelligent control to operation of air conditioning systems.It inputs and is saturated from water inlet pipe 8
In salting liquid to case, the adjusting to air humidity in case is realized by saturated salt solution.After the completion of Acceleration study, arranged from water outlet
Saturated salt solution out.
A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study method, the specific steps are as follows:
1, prepare test specimen
First with marshall compaction instrument production standard marshal piece, and to the parameters such as the diameter, thickness, quality of test specimen into
Row measures and records.
2, the experimental stage
Each component is attached according to experimental provision, opens water inlet pipe 8, the good certain density salt of configured in advance is molten
Liquid is passed through in experimental provision, is heated by PTC warm-air drier 10 to box house environment, is heated to experimental temperature, makes cabinet
After temperature in inner air is maintained at equilibrium state, then opens lid and the marshal piece of preparation is put into pallet rapidly,
And the quality of test specimen under original state is read, immediately experimental provision is sealed.
3, experimental record
The variation of marshal piece quality, data of the Temperature and Humidity module in certain time are recorded, in case check, it will examination after experiment
Part takes out from experimental provision, recycles the indexs such as mechanical test equipment (such as universal testing machine) measurement cleavage strength, passes through
The Decay Law of tensile splitting strength evaluation bituminous concrete tensile strength.
Containing saline soil area, environment temperature locating for winter road surface is lower, can make the moisture knot inside asphalt
Ice, therefore it is directed to saliferous Frozen-thawed cycled operating condition, configured salting liquid is injected into cabinet from water inlet pipe 8 first, in cabinet
After salting liquid submerges test specimen, stop water inlet, the Immersion time of test specimen in control cabinet after reaching setting time, opens 6 row of drainpipe
The intracorporal salting liquid of outlet；Then refrigeration machine 3 is opened in control, to acceleration cooling is carried out in case, is reduced the environment temperature in case, is reached
To after low temperature controlling value, certain setting time is kept, until fully charge inside test specimen；Finally, being beaten using intelligent controller
PTC warm-air drier 10 is opened, to accelerated warming is carried out in case, so that test specimen be made to complete melting process, so far, that is, completes a salt freeze thawing
Circulation.And so on, it can be achieved that salt freezes the Acceleration study test that circulation influences bituminous concrete performance.It should be pointed out that
If carrying out common frozen process experiment, only pure water need to be inputted in water inlet pipe 8.
During the experiment, the measurement of temperature and humidity is to pass to automatic temperature and humidity by the metal probe 4 of Temperature Humidity Sensor
In recorder, automatic warm hygrograph can recorde 130,000 groups of data, and every 10 minutes records are arranged once, observe judgement with this
The intracorporal temperature and humidity situation of change of case.
During Acceleration study, the quality damage of the bituminous concrete in cyclic process need to be measured by high accuracy balance 9
Situation is lost, finally, need to carry out mechanical index experiment by Mechanics Performance Testing device and method after the completion of Acceleration study, with
Mechanical index realizes the Durability under-thermal coupling effect wet to bituminous concrete salt-.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (7)
1. a kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device, which is characterized in that including cabinet, position
In the temperature and humidity automatic recording instrument of box house, refrigeration machine, PCT warm-air drier and high Accuracy Electronic Balance；The inside of the cabinet
Several brackets are provided with, the refrigeration machine, high Accuracy Electronic Balance and PCT warm-air drier are respectively placed on different brackets, temperature
Metal probe is connected with below humidity automatic recording instrument, the lower section of the high accuracy balance connects a pallet；Water inlet pipe is worn
The cover board for crossing top of the box, extends to the lower part of cabinet, and the bottom of cabinet is also connected with drainpipe.
2. a kind of salt-as described in claim 1 is wet-heat effect under bituminous concrete mechanical property Acceleration study device, it is special
Sign is, route inlet and outlet is offered on the cover board of top of the box, with the temperature and humidity automatic recording instrument, refrigeration machine, high-precision
The connected route of balance is pierced by the route inlet and outlet, and is connected with the power supply outside cabinet.
3. a kind of salt-as described in claim 1 is wet-heat effect under bituminous concrete mechanical property Acceleration study device, it is special
Sign is that airtight connection between the cover board and cabinet, the route import and export is fixed using seal closure.
4. a kind of salt-as described in claim 1 is wet-heat effect under bituminous concrete mechanical property Acceleration study device, it is special
Sign is that the high accuracy balance is accurate to 0.001 gram.
5. a kind of salt-as described in claim 1 is wet-heat effect under bituminous concrete mechanical property Acceleration study device, it is special
Sign is that the bracket is made of corrosion resistance material.
6. a kind of salt-as described in claim 1 is wet-heat effect under bituminous concrete mechanical property Acceleration study device, it is special
Sign is that the cabinet, lid are all made of transparent glass and are made.
7. a kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study method, it is any using such as claim 1-6
The experimental provision, which is characterized in that specific step is as follows:
(1) prepare test specimen
The marshal piece of standard is first made of marshall compaction instrument, and each parameter of diameter, thickness, quality of test specimen is surveyed
It measures and records；
(2) experimental stage
Each component is attached according to experimental provision, water inlet pipe is opened, the good certain density salting liquid of configured in advance is led to
Enter in experimental provision, box house environment is heated by PTC warm-air drier, is heated to experimental temperature, keeps box house empty
After temperature in gas is maintained at equilibrium state, then opens lid and the marshal piece of preparation is put into pallet rapidly, and read
The quality of test specimen, immediately seals experimental provision under original state；
(3) experimental record
Record the variation of marshal piece quality, data of the Temperature and Humidity module in certain time, in case check, after experiment by test specimen from
It is taken out in experimental provision, recycles the indexs such as mechanical test equipment measurement cleavage strength, pitch is evaluated by tensile splitting strength
The Decay Law of Analysis of Concrete Tensile intensity.
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| CN201910596980.9A CN110196189A (en) | 2019-07-04 | 2019-07-04 | A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device and method |
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| CN201910596980.9A CN110196189A (en) | 2019-07-04 | 2019-07-04 | A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736675A (en) * | 2019-11-21 | 2020-01-31 | 中国水利水电科学研究院 | sandstone aggregate saturated surface dry water absorption determination device and method |
| CN117388075A (en) * | 2023-12-08 | 2024-01-12 | 沧州航天科宇测试仪器有限公司 | Asphalt mixture tensile deformation experimental device |
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