Title:
Case Study - Rehabilitation of Parking Decks With Superplasticized Concrete Overlay
Author(s):
S. G. Pinjarkar, A. E. N. Osborn, M. J. Koob and D. W. Phiffer
Publication:
Concrete International
Volume:
2
Issue:
3
Appears on pages(s):
62-67
Keywords:
chlorides; concrete slabs; corrosion;
d,terioration; garages; parking facilities; plasticizers;
quality control; repair; resurfacing; specifications.
DOI:
Date:
3/1/1980
Abstract:
This article discusses the use of a low water-cement ratio superplasticized specialty concrete overlay to repair deteriorated parking garage floors. cOvers repair procedures, repair specifications, and construction considerations. An example of rehabilitation of an existing 15.year-old reinforced concrete parking structure using a superplasticized fill and overlay concrete is presented. Data are included concerning the chloride ion content within the deteriorated concrete; the 3-day and day compressive strength of the superplasticized fill and overlay concrete; and the air content and plastic unit weight of the superplasticized concrete. Material concerning the surface preparation technique for the deteriorated concrete, concrete transportation, technique for adding superplasticizer to a ready-mixed truck, quality control tests, and plac-ing and curing techniques are also presented. Observations concerning experiences gained during the project are also made. [Author]