CN203177836U - Fine-aggregate internal friction angle tester - Google Patents
Fine-aggregate internal friction angle tester Download PDFInfo
- Publication number
- CN203177836U CN203177836U CN 201320014146 CN201320014146U CN203177836U CN 203177836 U CN203177836 U CN 203177836U CN 201320014146 CN201320014146 CN 201320014146 CN 201320014146 U CN201320014146 U CN 201320014146U CN 203177836 U CN203177836 U CN 203177836U
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- China
- Prior art keywords
- internal friction
- barrel
- fine
- fine aggregate
- leakage barrel
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- Expired - Lifetime
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Abstract
The utility model relates to a fine-aggregate internal friction angle tester which is characterized in that the tester comprises a support, a material leakage barrel and a material capture barrel; the material leakage barrel is installed on the upper portion of the support; the material leakage barrel is cylindraceous; the center at the bottom of the material leakage barrel is provided with a material leakage hole; a quick opening valve is mounted on the lower portion of the material leakage hole; and the bottom of the support is fixedly provided with the material capture barrel which is positioned right below the material leakage barrel. The fine-aggregate internal friction angle tester provided by the utility model has a structure which is scientifically and reasonably designed, can be used for testing fine-aggregate internal friction angle, provides a new test approach for fine aggregate quality standard, is simple to operate, has high test accuracy, and is a fine-aggregate internal friction angle tester with high innovation.
Description
Technical field
The utility model relates to the asphalt test unit, particularly a kind of fine aggregate angle of internal friction test instrument.
Background technology
The correlative study data shows both at home and abroad, relevant fine aggregate corner angle are to influence existing a lot of documents argumentations both at home and abroad of stability at high temperature of asphalt mixture, but the situation of other pavement performances influence is then studied very few, do not proposed definite method of fine aggregate angle of internal friction and to the influence relation of asphalt pavement performance.About fine aggregate angle of internal friction and fine aggregate correlationship and angle of internal friction to the relation between pavement performances such as asphalt mixture anti-rutting characteristic, at home and abroad there is no research, definite method for the fine aggregate angle of internal friction still belongs to blank, does not still have the development of fine aggregate angle of internal friction analyzer in the industry.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of fine aggregate angle of internal friction test instrument is provided, and it can conveniently realize the mensuration to the fine aggregate angle of internal friction.
A kind of fine aggregate angle of internal friction test instrument, it is characterized in that: constituted by bearing, leakage barrel and the tube that connects material, described leakage barrel is installed on bearing top, this leakage barrel is cylindrical shape, central authorities have material spilling hole in the bottom surface of this leakage barrel, in this material spilling hole bottom quick opening valve is installed, is fixed with the tube that connects material that is positioned under the described leakage barrel at rest base.
And the diameter of described leakage barrel is 23-27cm, highly is 18-22cm, and the diameter of material spilling hole is 5cm ~ 7cm.
And the bottom surface of described leakage barrel and the distance that connects material between the inner bottom surface are 18-22cm.
Advantage of the present utility model and beneficial effect are:
1, this fine aggregate angle of internal friction test instrument can be set up the relation of fine aggregate angle of internal friction and flowing time, sand equivalent, corner angle and mixture anti-rutting ability, thereby has worked out the fine aggregate quality standard; Adopt above-mentioned quality standard can improve rutting resistance, the cracking resistance on road surface, prolong road serviceable life, increase the road maintenance cycle, make the road maintenance integrated cost reduce, reduce the road reconstruction expense, have huge economic benefit.
2, this fine aggregate angle of internal friction test instrument; can improve the fine aggregate quality control standard effectively; not only can solve the quality Control of high speed bituminous pavement design; and the destruction that can reduce bituminous pavement; prolong service life of road surface; postpone the maintenance cycle of road, reduce the maintenance cost of highway greatly, the protection environment.Improve the level of road passage capability, security service and highway user's satisfaction simultaneously, and can improve the prestige of transportation industry in the people to a certain extent, have remarkable social benefit.
3, the utility model scientific structure design is reasonable, can be used in the test to the fine aggregate angle of internal friction, for the fine aggregate quality standard provides new test approach, and also easy and simple to handle, the testing precision height is a kind of fine aggregate angle of internal friction test instrument that has than high innovation character.
Description of drawings
Fig. 1 is structural representation of the present utility model (partial sectional view).
Description of reference numerals:
1-leaks barrel, 2-table top, 3-material spilling hole, 4-valve plates, 5-lever, 6-bearing, 7-connect material tube, 8-bottom bracket.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of fine aggregate angle of internal friction test instrument, it is made of bearing 6, leakage barrel 1 and the tube 7 that connects material, at bearing top table top 2 described leakage barrel is installed, this leakage barrel is cylindrical shape, and central authorities have material spilling hole 3 in the bottom surface of this leakage barrel, in this material spilling hole bottom quick opening valve is installed, this quick opening valve is made of valve plates 4 and lever 5, and the lever hinge is contained in Lou barrel bottom, installs valve plates at lever one end, the other end of lever extend out to outside the bearing, handled easily.Be placed with the tube that connects material that is positioned under the described leakage barrel at rest base supporting plate 8.
The diameter that leaks barrel is 23-27cm, and the diameter that leaks barrel is preferably 25cm.
Learn according to particle packing, when only gravity being arranged, the loose thickness of actual particle reduces and the increasing and reduce of particle bed height with container diameter in the container.Surpass at 50 o'clock according to test restraint container diameter and sphere diameter ratio, voidage almost is constant.Can ignore the size of container this moment, namely ignores the influence of wall effect.Because the maximum particle diameter of measuring fine aggregate is 4.75mm, so Tong diameter is 25cm as can be known.
The diameter of material spilling hole is 5cm ~ 7cm, and optimum is 6cm.
According to test as can be known, be 25cm in same bucket footpath, different types of fine aggregate, the aperture is respectively under 5cm, 6.5cm, the 10cm and measures with a kind of fine aggregate, the angle of repose difference that obtains is little, about the same, thus draw: and be under the 25cm at the bucket diameter, it doesn't matter for the angle of repose of fine aggregate and the size in aperture.Use for reference the size of funnel bore in the fine aggregate corner angle test method and the proportionate relationship of test aggregate size simultaneously, and for fine aggregate is leaked down smoothly, the aperture of this experimental apparatus should be greater than 10 times of test aggregate size.In addition, consider the accuracy of test, the aperture should not surpass 1/3 again with the ratio in bucket footpath.So comprehensively determine the pore size of material spilling hole be: 5cm ~ 7cm, optimum is 6cm.
The height that leaks barrel is 18-22cm.By test: the angle of repose of the fine aggregate of under same bucket diameter, aperture, measuring, can get by comparative analysis: the angle of internal friction of the high 10cm of bucket differs apparent in view with bucket high 15cm, 20cm, and the angle of internal friction of the high fine aggregate for 15cm and 20cm of bucket differs only 0.02 °, the angle of internal friction of its mensuration changes very little, and then has determined that the height of charging ladle is 20cm.
Leaking the bottom surface of barrel and the distance that connects material between the inner bottom surface is 18-22cm.
The principle of work of this fine aggregate angle of internal friction test instrument is:
Gathering materials of various particle diameters is mixed with compound and mixes according to predetermined grating, compound is added in the angle of internal friction test instrument carefully; Open quick opening valve, gather materials and slowly to fall into the tube that connects material; Leak behind the certain hour and gather materials in the barrel no longer to fall, the aggregate quality in the barrel is stayed in weighing this moment with Louing, and the aggregate quality in the tube of connecting material that bleeds, again according to formula calculating fine aggregate angle of internal friction.
Although disclosed embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that, in the spirit and scope that do not break away from the utility model and claims, various replacements, variation and modification all are possible, and therefore scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (3)
1. fine aggregate angle of internal friction test instrument, it is characterized in that: constituted by bearing, leakage barrel and the tube that connects material, described leakage barrel is installed on bearing top, this leakage barrel is cylindrical shape, central authorities have material spilling hole in the bottom surface of this leakage barrel, in this material spilling hole bottom quick opening valve is installed, is fixed with the tube that connects material that is positioned under the described leakage barrel at rest base.
2. fine aggregate angle of internal friction test instrument according to claim 1, it is characterized in that: the diameter of described leakage barrel is 23-27cm, highly is 18-22cm, the diameter of material spilling hole is 5cm ~ 7cm.
3. fine aggregate angle of internal friction test instrument according to claim 1, it is characterized in that: the bottom surface of described leakage barrel and the distance that connects material between the inner bottom surface are 18-22cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014146 CN203177836U (en) | 2013-01-10 | 2013-01-10 | Fine-aggregate internal friction angle tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014146 CN203177836U (en) | 2013-01-10 | 2013-01-10 | Fine-aggregate internal friction angle tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203177836U true CN203177836U (en) | 2013-09-04 |
Family
ID=49074519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320014146 Expired - Lifetime CN203177836U (en) | 2013-01-10 | 2013-01-10 | Fine-aggregate internal friction angle tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203177836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959259A (en) * | 2017-03-22 | 2017-07-18 | 安徽省骏腾工程试验检测有限公司 | A kind of fine aggregate angularity analyzer |
-
2013
- 2013-01-10 CN CN 201320014146 patent/CN203177836U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959259A (en) * | 2017-03-22 | 2017-07-18 | 安徽省骏腾工程试验检测有限公司 | A kind of fine aggregate angularity analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |