SILICA FUME, LATEX-MODIFIED PORTLAND CEMENT MORTARS AND CONCRETES

Portland cement mortars and concretes, modified by the addition of silica fume (SF) or by styrene-butadiene (S-B) latexes, have been and are being used as overlays for bridge and parking-garage decks. The overlays are used both in repair of old construction and in new construction. The primary reason for the incorporation of either admixture in overlays is to improve permeability resistance of the mortar or concrete to deicing salts. The latter cause corrosion of reinforcing steel, which in turn leads to deterioration of the deck. SF is widely used to produce high compressive strength concrete. Laboratory work is described that examines the combined use of silica fume and S-B latex. The results indicate that the combined use of SF and S-B latex yields mortars and concretes that have superior properties to those using one or the other of the admixtures. This work also indicates that the two admixtures can be combined into one, which means that current equipment for placing latex-modified mortars or concretes could be used without modification.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1991/1301/1301-003.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=SILICA+FUME%2C+LATEX-MODIFIED+PORTLAND+CEMENT+MORTARS+AND+CONCRETES&author=D.+Walters&publication_year=1991
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309051053
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1301, Factors Affecting Properties and Performance of Pavements and Bridges 1991. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Walters, D Gerry
• Publication Date: 1991

Media Info

• Features: References; Tables;
• Pagination: p. 12-16
• Monograph Title: Factors affecting properties and performance of pavements and bridges, 1991
• Serial:
  • Transportation Research Record
  • Issue Number: 1301
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete; Copolymers; Deicing chemicals; Laboratory tests; Latex modified concrete; Mortar; Overlays (Pavements); Parking garages; Performance evaluations; Permeability; Silica fume
• Uncontrolled Terms: Styrene butadiene copolymers
• Old TRIS Terms: Silica fume concrete
• Subject Areas: Highways; Materials; Terminals and Facilities; I32: Concrete;

Filing Info

• Accession Number: 00616316
• Record Type: Publication
• ISBN: 0309051053
• Files: TRIS, TRB, ATRI
• Created Date: Oct 31 1991 12:00AM