Uniform compaction of asphalt concrete
First Claim
1. In apparatus of the type including a vehicle having a forward end, a power source for propelling the vehicle and ground engaging means, wherein the improvement comprises:
- (a) a cylindrical drum having first and second ends;
said drum rotating about a horizontal axis;
wherein said drum is attached to and supported by said forward end of said vehicle;
wherein downward force exerted by said drum is adjustable;
(b) confinement edge force means adjacent to said first end of said cylindrical drum and extending below said drum;
wherein said confinement edge force means is laterally adjustable along a horizontal axis.
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Accused Products
Abstract
Apparatus is described for obtaining uniform compaction of asphalt concrete to reduce or prevent cracking of the asphalt concrete surface. A mobile confinement edge force is maintained in contact with the edge surface of an asphalt concrete mat while the mat is being compacted. This is performed in a manner such that the density of the mat across the full width of the mat becomes uniform. By obtaining uniform density of each lane of the mat as it is laid significantly reduces the incidence of joint cracking and deterioration of the asphalt concrete, in the longitudinal joint area, over time.
19 Citations
14 Claims
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1. In apparatus of the type including a vehicle having a forward end, a power source for propelling the vehicle and ground engaging means, wherein the improvement comprises:
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(a) a cylindrical drum having first and second ends;
said drum rotating about a horizontal axis;
wherein said drum is attached to and supported by said forward end of said vehicle;
wherein downward force exerted by said drum is adjustable;(b) confinement edge force means adjacent to said first end of said cylindrical drum and extending below said drum;
wherein said confinement edge force means is laterally adjustable along a horizontal axis. - View Dependent Claims (2, 3)
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4. In apparatus of the type including a vehicle having a power source for propelling the vehicle, ground engaging means, and compacting means for compacting asphalt concrete;
- wherein the improvement comprises;
(a) a cylindrical drum having first and second ends;
said drum rotating about a horizontal axis;
wherein said drum is attached to and supported by said vehicle;
wherein downward force exerted by said drum is adjustable;(b) confinement edge force means adjacent to said first end of said cylindrical drum and extending below said drum;
wherein said confinement edge force means is laterally adjustable along a horizontal axis. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- wherein the improvement comprises;
Specification