The paper reports how a course of cement aggregates mixture base for the new southbound lane of 1-55 north of Bloomington, Illinois, was prepared and placed with the same precision as the concrete slab it supported. Heart of the mix system was a Barber-Greene twin-screw unit supplied with aggregates by a 30-in. wide and 70-ft. long inclined belt conveyor. This was fed by a 30-in. wide and 10-ft. long belt feeder, while a rotary vane feeder under a 250-bbl storage tank dropped Type 1 portland cement on the aggregates.

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  • Corporate Authors:

    Dun Donnelley Publishing Corporation

    222 South Riverside Plaza
    Chicago, IL  United States  60606
  • Publication Date: 1977-2

Media Info

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Filing Info

  • Accession Number: 00158373
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Dec 27 1977 12:00AM