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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: High-Performance Concrete Floor Construction and Performance Assessment
Author(s): R. L. Munn and I. Dumitru
Publication: Special Publication
Appears on pages(s): 103-126
Keywords: abrasion resistance; abrasion tests; drying shrinkage; flexural strength; floors; performance tests; quality control; shotcrete; tests; Construction
Abstract:During 1994, a new 50,000 m 2 warehouse and similar area of external pavement was constructed at Ingleburn near Sydney, Australia. The client required that the warehouse meet very onerous performance criteria that required the construction of a very flat, prestressed concrete floor that would be crack free, with excellent abrasion resistance, and having a minimal number of joints. The design required that the concrete base provide the wearing surface for the floor without application of a surface topping. A second industrial project which required the construction of high performance concrete floors is a new integrated printing facility for a major newspaper, commenced at Chullora near Sydney in late 1994. The plant is highly automated; sections of the floor are designed to be frequently loaded with turning transporters carrying full rolls of newsprint. Such floors require exceptional abrasion resistance. The designers decided to seek a level of abrasion resistance even higher than that provided at Ingleburn. To minimize joints and cracking, the concretes were designed to have 56- day drying shrinkage of less than 450 microstrain and to exhibit an abrasion resistance, when tested in situ using the Chaplin abrasion machine, of less than 0.10-mm depth of wear. This marks the first time such a direct measurement of abrasion resistance has been specified and assessed in Australia. Key elements of both projects were the high performance concrete floors, which were required to meet tolerances on surface flatness ¦ 2 mm on 3-m straight-edge and ¦ 4 mm overall. These and other strict performance criteria were met consistently during construction providing clients with world class low maintenance warehouses.
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