Roller compactor integrated to a wheel track machine for laboratory tests on bituminous mixes
AssigneeMecpart S.R.L.
InventorMario Manbrini
Life of this patent
Estimating the term…
Abstract
An integrated machine for making, in laboratory, slabs made of a controlled-compaction bituminous mix in a mold and for making wheel tracking tests on the same, the compaction is performed by two idle disks which slide and press the side extensions of an array of vertical plates overlapping the mix, the wheel tracking test is performed by a wheel located between the disks; after having removed the array of plates, the wheel can be presented to the mix, since the disks are located at a distance greater than the mold width.
Claims9
An integrated machine for making, in a laboratory, slabs made of a controlled-compaction bituminous mix, comprising:
- a mould (4D) configured for holding a bituminous mix (4G) with a bituminous mix upper surface, the mould (4D) having an upper edge and side walls, the side walls having facing surfaces separated by a first distance and that define a bituminous mix upper surface width;
- a cylindrical roller formed by
- i) two coaxial facing idle disks (4A), facing surfaces of said two coaxial facing idle disks (4A) being separated by a second distance,
- ii) a removable slab (4C) located below the two coaxial facing idle disks (4A) and above the mould (4D), the slab (4C) comprising two side projecting extensions (4B), the slab having side surfaces extending from a lower surface of the two side projecting extensions (4B) and a lower surface of the slab, the slab having an upper surface width greater than a width of the lower surface width by an amount equal to a width of the two side projecting extensions, the two side projecting extensions (4B) being located in alignment directly below the two coaxial facing idle disks (4A), the lower width of the slab (4C) corresponding to the bituminous mix upper surface width within the mould (4D), and
- iii) a central wheel (4F) located between the two coaxial facing idle disks (4A),
- wherein the second distance separating the facing surfaces of said two coaxial facing idle disks (4A) is greater than the first distance of the mould's facing surfaces;
- and
- a jack (4E) position to cause the central wheel (4F), with the slab (4C) removed, to contact the bituminous mix upper surface while said two coaxial facing idle disks (4A) freely lower besides the upper edge of the mould outside exterior surfaces.
An integrated machine for making, in a laboratory, slabs made of a controlled-compaction bituminous mix, comprising:
- a mould (4D) configured for holding a bituminous mix (4G) with a bituminous mix upper surface, the mould (4D) having an upper edge and side walls with exterior surfaces and interior facing surfaces separated by a first distance, the first distance defining a bituminous mix upper surface width;
- a cylindrical roller formed by
- i) two facing coaxial idle disks (4A), facing surfaces of said two coaxial idle disks (4A) being separated by a second distance,
- ii) a removable slab (4C) located below the two coaxial facing idle disks (4A) and above the mould (4D), the slab (4C) comprising two projecting side extensions (4B), the slab having side surfaces extending from a lower surface of the two side side extensions (4B) and a lower surface of the slab, the slab having an upper surface width greater than a width of the lower surface width by an amount equal to a width of the two side extensions, the lower width of the slab (4C) corresponding to the bituminous mix upper surface width within the mould (4D), and
- iii) a central wheel (4F) located between the two coaxial idle disks (4A),
- wherein the central wheel and the two coaxial idle disks are configured to move together in a vertical direction, and
- wherein the second distance separating the facing surfaces of said two coaxial idle disks (4A) is greater than the first distance of the mould's facing surfaces;
- and
- a jack (4E) position to vertically move the central wheel (4F), with the slab (4C) removed, to contact the bituminous mix upper surface to perform a wheel tracking test and said two coaxial facing idle disks (4A) freely lower besides the upper edge of the mould outside exterior surfaces.
Dependencies are inferred from the claim text.