00616316

Component

http://onlinepubs.trb.org...trr/1991/1301/1301-003.pdf

https://scholar.google.co...ters&publication_year=1991

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.

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

01407099

p. 12-16

1991

Transportation Research Record

0309051053

References (3) ; Tables (7)

Bridge decks; Concrete; Copolymers; Deicing chemicals; Laboratory tests; Latex modified concrete; Mortar; Overlays (Pavements); Parking garages; Performance evaluations; Permeability; Silica fume

Styrene butadiene copolymers

Highways; Materials; Terminals and Facilities; I32: Concrete

TRIS, TRB, ATRI

Oct 31 1991 12:00AM

• CHLORIDE CONTENT OF PORTLAND CEMENT CONCRETE POWDER BY A METHOD USING FLOCCULATION
• COMPARISON OF FOUR AGGREGATES USING THE WASHINGTON HYDRAULIC FRACTURE TEST
• CRACKS IN LATEX-MODIFIED CONCRETE OVERLAYS--HOW THEY GET THERE, HOW SERIOUS THEY ARE, AND WHAT TO DO ABOUT THEM
• EFFECT OF FLY ASH ON ALKALI-SILICA REACTIVITY IN CONCRETE
• EFFECTS OF LOS ANGELES ABRASION TEST VALUES ON THE STRENGTHS OF LABORATORY-PREPARED MARSHALL SPECIMENS
• EVALUATION OF PARTICLE SHAPE AND TEXTURE: MANUFACTURED VERSUS NATURAL SANDS
• FLEXURAL CRACKING IN CONCRETE STRUCTURES
• LABORATORY EVALUATION OF THE ALKALI CARBONATE REACTION
• LABORATORY TESTS FOR PREDICTING COARSE AGGREGATE PERFORMANCE IN ONTARIO
• LATEX MODIFICATION EFFECTS ON THE IMPACT RESISTANCE AND TOUGHNESS OF PLAIN AND STEEL-FIBER-REINFORCED CONCRETES
• LATEX MODIFICATION EFFECTS ON THE MECHANISMS OF MICROCRACK PROPAGATION IN CONCRETE MATERIALS
• LIGNITE FLY ASH CONCRETE HIGHWAY PAVEMENT--A 15-YEAR PERFORMANCE HISTORY
• MEASUREMENT OF AGGREGATE SHAPE, SURFACE AREA, AND ROUGHNESS
• MICRO-DEVAL TEST FOR EVALUATING THE QUALITY OF FINE AGGREGATE FOR CONCRETE AND ASPHALT
• PHYSICAL CHARACTERISTICS OF POLISH RESISTANCE OF SELECTED AGGREGATES
• RAPID, ACCURATE METHOD FOR THE DETERMINATION OF SULFUR TRIOXIDE IN HYDRAULIC CEMENT
• RESTORING SKID RESISTANCE TO CONCRETE PAVEMENTS AND BRIDGE DECKS USING A LATEX-MODIFIED PORTLAND CEMENT SLAG SLURRY
• ROLLER-COMPACTED CONCRETE SLABS USING PHOSPHOGYPSUM
• USE OF HIGH-VOLUME CLASS F FLY ASH FOR STRUCTURAL-GRADE CONCRETE
• VISUALIZATION OF CHLORIDE DISTRIBUTION IN CONCRETE (ABRIDGMENT)