Title:
Use of Polypropylene Fibers to Enhance Deterioration Resistance of Concrete Surface Skin Subjected to Cyclic Wet/Dry Seawater Exposure
Author(s):
Abdul-Hamid J. Al-Tayyib and Mesfer M. Al-Zahrani
Publication:
Materials Journal
Volume:
87
Issue:
4
Appears on pages(s):
363-370
Keywords:
carbonates; cements; chemical analysis; concretes; curing; deterioration; electrical resistance; electron microscopes; fiber reinforced concretes; magnesium hydroxides; permeability; polypropylene fibers; sea water; wetting and drying tests; x-ray diffr
DOI:
10.14359/2088
Date:
7/1/1990
Abstract:
Presents results of a testing program in which the effects of addition of polypropylene fiber to concrete mix and adequate concrete curing in enhancing the deterioration resistance of concrete surface skin subjected to cyclic wet/dry; seawater exposure have been evaluated. The results indicate that the addition of polypropylene fibers effectively retards the deterioration process of the surface skin of the concrete specimens cured in hot weather environments. Tests were carried out on 30 concrete slab specimens of dimensions 75 x 375 x 750 mm (3 x 15 x 30 in.) that were made with and without polypropylene fibers. Some specimens were cured under laboratory-controlled conditions and were subjected to the wet/dry cycles for 85 weeks, while others were cured under field conditions and were subjected to the same cycles for 50 weeks.