IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0015518
(2001-12-13)
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우선권정보 |
AU-PO2414(1996-09-18) |
발명자
/ 주소 |
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출원인 / 주소 |
- Pioneer Road Services Pty Ltd.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
19 |
초록
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A method of compacting a mat of hot mix asphalt which has been laid by an advancing asphalt paver, the method comprising advancing an asphalt compactor over the laid asphalt such that a compaction surface of the compactor, formed by a lower run of at least one belt, is engaged with any one portion o
A method of compacting a mat of hot mix asphalt which has been laid by an advancing asphalt paver, the method comprising advancing an asphalt compactor over the laid asphalt such that a compaction surface of the compactor, formed by a lower run of at least one belt, is engaged with any one portion of the mat for a period of at least 1.5 seconds, the compaction surface applying a maximum average load stress to the mat of less than about 50 kPa (7.252 psi). Compaction may be achieved using a compactor (60) comprising two longitudinally spaced modular compaction units (62) connected relative to each other, and a power source for driving at least one of the modular compaction units ( 62), wherein at least one of the modular compaction units (62) is adjustable to permit steering of the compactor, and wherein each of said modular compaction units (62) comprises a compaction belt ( 74), support means (78, 80) for the belt to define a planar lower run of the belt (74) forming a compaction surface.
대표청구항
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The invention claimed is: 1. A method of compacting a mat of hot mix asphalt which has been laid by an advancing asphalt paver, the method comprising advancing an asphalt compactor over the laid asphalt such that a compaction surface of the compactor, formed by a lower run of at least one belt, is
The invention claimed is: 1. A method of compacting a mat of hot mix asphalt which has been laid by an advancing asphalt paver, the method comprising advancing an asphalt compactor over the laid asphalt such that a compaction surface of the compactor, formed by a lower run of at least one belt, is engaged with any one portion of the mat for a period of at least 1.5 seconds and of less than about 60 seconds, the compaction surface applying a maximum average load stress to the mat of less than about 50 kPa and greater than about 10 kPa. 2. A method according to claim 1, wherein the asphalt compactor is advanced over the laid asphalt substantially at the rate of advancement of the asphalt paver and within about 50 m behind the asphalt paver. 3. A method according to claim 2, wherein the asphalt compactor is advanced substantially at the rate of the asphalt paver within about 2 m behind the asphalt paver. 4. A method according to claim 2, wherein the asphalt compactor is connected to and advanced by the asphalt paver. 5. A method according to claim 2, wherein the distance between the asphalt paver and the asphalt compactor is controlled via relative location sensor means. 6. A method according to claim 2, wherein the asphalt paver travels at a speed of from about 0.05 to about 0.15 m/s. 7. A method according to claim 6, wherein the asphalt paver travels at a speed of about 0.1 m/s. 8. A method according to claim 1, wherein the compactor is displaced over the mat at a rate of no more than about 0.7 m/s. 9. A method according to claim 1, wherein the rate of compaction is from about 0.6 m/s to about 0.05 m/s. 10. A method according to claim 1, wherein the total compaction duration is from about 7 seconds to about 60 seconds. 11. A method according to claim 1, wherein compaction is achieved in a single pass of the compactor over the mat. 12. A method according to claim 1, comprising two or more separate successive compaction steps by the compaction surface or by two or more separate compaction surfaces which closely follow one another, each of said compaction steps comprising engaging said compaction surface or one of said two or more compaction surfaces with any one portion of the mat for a period of at least 1.5 seconds and of less than about 60 seconds. 13. A method according to claim 1, wherein the average load stress applied through the compaction surface is from about 10 kPa to about 40 kPa. 14. A method according to claim 1, wherein the compactor belt is heated to at least the temperature of the asphalt mat. 15. A method according to claim 14, wherein the compactor belt is heated to a temperature in the range of from about 120째 C. to about 150째 C. 16. A method according to claim 14, wherein the compactor belt is heated such that the bitumen on the surface of the asphalt mat substantially does not adhere to the compactor belt during compaction. 17. A method according to claim 1, wherein the asphalt compactor comprises at least two longitudinally spaced modular compaction units coupled to each other and a power source for driving at least one of the modular compaction units, at least one of the modular compaction units being adjustable to permit steering of the compactor, and wherein each of said modular compaction units comprises a compaction belt and support means for the belt to define a planar lower run of the belt forming said compaction surface, wherein advancing the asphalt compactor comprises advancing the two longitudinally spaced modular compaction units over the laid asphalt.
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