CN204302115U - A kind ofly evaluate the test apparatus of acid rain to asphalt erosion damage - Google Patents
A kind ofly evaluate the test apparatus of acid rain to asphalt erosion damage Download PDFInfo
- Publication number
- CN204302115U CN204302115U CN201320640528.6U CN201320640528U CN204302115U CN 204302115 U CN204302115 U CN 204302115U CN 201320640528 U CN201320640528 U CN 201320640528U CN 204302115 U CN204302115 U CN 204302115U
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- asphalt
- acid rain
- pump
- test apparatus
- erosion damage
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses and a kind ofly evaluate the test apparatus of acid rain to asphalt erosion damage, the upper shear box of this evaluation acid rain to the test apparatus of asphalt erosion damage is positioned at the top of down cut box; Vertical hydraulic piston is connected with press perpendicular pump by tubule, is arranged on the top of shear box; Pressure compensator is arranged on the pipe between vertical hydraulic piston and Vertical loading pump; Horizontal hydraulic pressure piston is connected with horizontal force (forcing) pump by tubule, is arranged on the intersection place of upper and lower shear box; Steel pressure head is arranged on vertical hydraulic piston.This evaluation acid rain ensures test specimen stress balance to the test apparatus of asphalt erosion damage by press perpendicular, horizontal pressurizing piston applies shearing force by shearing to test specimen, certainty of measurement is high, real-time good, be swift in response, the shear parameters of different pitches compound can be measured rapidly, for the design of asphalt provides basic parameter.Be used for better evaluating acid rain to the destruction of asphalt.
Description
Technical field
The utility model belongs to road erosion and evaluates field, particularly relates to and a kind ofly evaluates the test apparatus of acid rain to asphalt erosion damage.
Background technology
Acid rain can impel mineral aggregate quality to soften to the corrosion function of bituminous paving, its corner angle are disappeared, accelerate its burnishing action under wheel repeatedly rolling friction effect, while mineral aggregate polishing, pavement skid resistance coefficient of friction, noise, water smoke, dabble, a series of function of surface such as dazzle also declines thereupon.Secondly, acid rain can reduce the cohesive force of mineral aggregate and pitch to the corrosion function of bituminous paving, under the acting in conjunction of vehicular load and precipitation, impels pitch from mineral aggregate surfacial spalling, makes surface layer bellding, loose so that form hole groove.Again, the corrosion function of acid rain to bituminous paving makes mineral aggregate mass loss, material internal is impelled to damage, reduce the mechanical strength of asphalt, bituminous paving is made easily to produce the diseases such as cracking and distortion under various load action, reduce the durability of asphalt, reduce the service life of bituminous paving.
Pitch dress mixture shearing machine conventional is at present when carrying out shearing test to cylinder test specimen, and charger bias-load produces countertorque to instrument, fragile instrument; Shear surface between actual road surface structare layer bears simultaneously compression and shear stress effect, shearing test method cannot apply compression on shear surface.Traditional asphalt mixture shearing machine precision is low, and the data portion drawn is accurate, and shear parameters recording error is large, and automation is low.
Utility model content
The purpose of this utility model is that providing a kind of evaluates the test apparatus of acid rain to asphalt erosion damage, and the asphalt mixture shearing machine precision being intended to solve order traditional is low, and the data portion drawn is accurate, shears ginseng
Number recording error is large, the problem that automation is low.
The utility model realizes like this, evaluate the test apparatus of acid rain to asphalt erosion damage, this structure is made up of vertical hydraulic piston, horizontal hydraulic pressure piston, pressure compensator, Vertical loading pump, horizontal addload pump, steel pressure head, upper shear box and down cut box.
Down cut box evaluates acid rain to the main part of the test apparatus of asphalt erosion damage, is the workplace of carrying out shearing;
Upper shear box evaluates acid rain to the main part of the test apparatus of asphalt erosion damage, is positioned at the top of down cut box;
Vertical loading pump is used for applying longitudinal power to test specimen;
Vertical hydraulic piston is connected with press perpendicular pump by tubule, is arranged on the top of shear box, for adjusting stressed guarantee test specimen longitudinal stress balance;
Pressure compensator is arranged on the pipe between vertical hydraulic piston and Vertical loading pump, for ensureing that the on-load pressure of Vertical loading pump is stablized;
Horizontal addload pump is used for applying horizontal power to test specimen;
Horizontal hydraulic pressure piston is connected with horizontal force (forcing) pump by tubule, is arranged on the intersection place of upper and lower shear box, for applying lateral load force to test specimen, producing lateral shear and destroying, read test data by the pressure dial plate of oil pump;
Steel pressure head is arranged on vertical hydraulic piston, for fixing test specimen.
Further, sample is standard marshal piece;
Further, tubule material is rubber tube.
It is low that the test apparatus of evaluation acid rain to asphalt erosion damage that the utility model provides overcomes traditional asphalt mixture shearing machine precision, and the data portion drawn is accurate, and shear parameters recording error is large, the problem that automation is low.Test specimen stress balance is ensured by press perpendicular, horizontal pressurizing piston applies shearing force by shearing to test specimen, certainty of measurement is high, real-time good, be swift in response, and can measure the shear parameters of different pitches compound fast, for the design of asphalt provides basic parameter.Better be used for evaluating acid rain to the destruction of asphalt.
Accompanying drawing explanation
Fig. 1 is that the evaluation acid rain that provides of the utility model is to the structure chart of the test apparatus of asphalt erosion damage.
1, Vertical loading pump; 2, pressure compensator; 3, vertical hydraulic piston; 4, upper shear box; 5, steel pressure head; 6, horizontal hydraulic pressure piston; 7, down cut box; 8, horizontal addload pump
Detailed description of the invention
The utility model realizes like this, by reference to the accompanying drawings 1, evaluate the test apparatus of acid rain to asphalt erosion damage, this structure is made up of vertical hydraulic piston 3, horizontal hydraulic pressure piston 6, pressure compensator 2, Vertical loading pump 1, horizontal addload pump 8, steel pressure head 5, upper shear box 4 and down cut box 7.
Down cut box 7 evaluates acid rain to the main part of the test apparatus of asphalt erosion damage, is the workplace of carrying out shearing;
Upper shear box 4 evaluates acid rain to the main part of the test apparatus of asphalt erosion damage, is positioned at the top of down cut box;
Vertical loading pump 1 is for applying longitudinal power to test specimen;
Vertical hydraulic piston 3 is connected with press perpendicular pump 1 by tubule, is arranged on the top of shear box, for adjusting stressed guarantee test specimen longitudinal stress balance;
Pressure compensator 2 is arranged on the pipe between vertical hydraulic piston 3 and Vertical loading pump 1, for ensureing that the on-load pressure of Vertical loading pump is stablized;
Horizontal addload pump 8 is for applying horizontal power to test specimen;
Horizontal hydraulic pressure piston 6 is connected with horizontal force (forcing) pump 8 by tubule, is arranged on the intersection place of upper and lower shear box, for applying lateral load force to test specimen, producing lateral shear and destroying, read test data by the pressure dial plate of oil pump;
Steel pressure head 5 is arranged on vertical hydraulic piston 3, for fixing test specimen.
Further, sample is standard marshal piece;
Further, tubule material is rubber tube.
Three groups of standard marshal pieces are made according to existing testing regulations, first group of test specimen is put into 25 DEG C of Water Tank with Temp.-controlled insulations 1 hour, then the steel pressure head of independently developed evaluation acid rain to the test apparatus (as Fig. 1) of asphalt erosion damage is adopted to fix test specimen, after making marshal piece longitudinal stress keep balance by the oil pump of longitudinal pressing, use the oil pump of side direction pressurization to make marshal piece produce lateral shear to destroy, the moment of destroying reads test data by the pressure dial plate of oil pump, is characterized by shear strength.Be soaked in 25 DEG C of running water and Simulated Acid Rain solution respectively by other two groups of test specimens, take out after 7 days soak and allow its natural drying soak after 1 day again, i.e. immersion-drying-soak cycle carries out repeatedly, carries out three cycles altogether.In process of the test, every day measures the acidity of simulated solution with accurate pH test paper, finds that acidity adds sulfuric acid when declining and pH value is adjusted to test initial value by nitric acid mixed solution, the acidity of strict control of acid rain solution.
Asphalt marshal piece after three cycle running water and acid rain drying and watering cycle is put into 25 DEG C of Water Tank with Temp.-controlled insulations 1 hour, then adopt the test apparatus of independently developed evaluation acid rain to asphalt erosion damage to measure its shear strength, thus evaluate acid rain to asphalt erosion damage according to degree before shearing.
Calculate acidproof coefficient ξ as follows:
In formula: the acidproof coefficient of ξ-asphalt after acid rain corrosion;
F
0the initial shear strength of-asphalt;
F
wthe shear strength of-asphalt after aqueous solution effects;
F
a-asphalt affects the shear strength of all after dates through acid rain corrosion;
Acidproof coefficient ξ is adopted to evaluate the acid rain resistant erosion performance of asphalt.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. evaluate the test apparatus of acid rain to asphalt erosion damage for one kind, it is characterized in that, this evaluation acid rain is made up of vertical hydraulic piston, horizontal hydraulic pressure piston, pressure compensator, Vertical loading pump, horizontal addload pump, steel pressure head, upper shear box and down cut box the test apparatus of asphalt erosion damage;
Upper shear box is positioned at the top of down cut box;
Vertical hydraulic piston is connected with press perpendicular pump by tubule, is arranged on the top of shear box;
Pressure compensator is arranged on the pipe between vertical hydraulic piston and Vertical loading pump;
Horizontal hydraulic pressure piston is connected with horizontal force (forcing) pump by tubule, is arranged on the intersection place of upper and lower shear box;
Steel pressure head is arranged on vertical hydraulic piston;
Sample adopts standard marshal piece;
Tubule adopts rubber tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320640528.6U CN204302115U (en) | 2013-10-17 | 2013-10-17 | A kind ofly evaluate the test apparatus of acid rain to asphalt erosion damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320640528.6U CN204302115U (en) | 2013-10-17 | 2013-10-17 | A kind ofly evaluate the test apparatus of acid rain to asphalt erosion damage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302115U true CN204302115U (en) | 2015-04-29 |
Family
ID=53107646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320640528.6U Expired - Fee Related CN204302115U (en) | 2013-10-17 | 2013-10-17 | A kind ofly evaluate the test apparatus of acid rain to asphalt erosion damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204302115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674738A (en) * | 2022-04-13 | 2022-06-28 | 西南交通大学 | Device and method for detecting exudation degree of wax oil in asphalt |
-
2013
- 2013-10-17 CN CN201320640528.6U patent/CN204302115U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674738A (en) * | 2022-04-13 | 2022-06-28 | 西南交通大学 | Device and method for detecting exudation degree of wax oil in asphalt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151017 |
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| EXPY | Termination of patent right or utility model |