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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: Rooftop Plaza Rehabilitation
Author(s): Robert Tracy
Publication: Concrete International
Appears on pages(s): 32-36
Keywords: concrete slabs; deterioration; drainage; insulation; repairs; parking facilities; renovating; repairs; roofs; General
Abstract:Describes the evaluation and rehabilitation of a relatively new rooftop parking slab on a large office building, which had experienced surface deterioration due largely to subsurface drainage between the concrete and the roof-insulation layer. The new system involved replacing all roof insulation, then placing a geocomposite drainage system consisting of a geotextile filter, bond-breaker fabric, and a geonet drainage layer, before repaving. The project was completed within 4 months, and included replacing over 160,000 ftý of unbonded roof slab. The system is performing satisfactorily after 5 yr of service, with no reports of operation or maintenance problems.
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