00616315

Component

http://onlinepubs.trb.org...trr/1991/1301/1301-002.pdf

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

The effects of latex modification and steel fiber reinforcement on the impact resistance and flexural strength and toughness of concrete materials were investigated. Two levels of latex content and two different fiber volume fractions were considered. Latex modification was particularly effective in increasing the impact resistance of plain concrete. Flexural strength was also increased in the presence of latex, but the flexural toughness of plain concrete did not receive major benefits from latex modification. Steel fibers were effective in increasing the impact resistance and flexural strength and toughness of concrete. The advantages associated with the joint use of steel fibers and latex polymers in concrete materials are assessed. Specifically, the effects of steel fiber reinforcement and latex modification on the impact resistance, flexural strength, and toughness characteristics of concrete materials are addressed. The hypothesis is that the improved adhesion capacity and ductility of concrete matrices incorporating latex polymers make them more compatible with steel fibers. The coimbined action of steel fibers and latex polymers produces the best performance characteristics. In the case of impact resistance and flexural toughness, the joint effects of latex and steel fibers are more than additive, indicating a positive interaction between the two. Latex modification seems to make concrete matrices more compatible with steel fibers. The increase in fiber-to-matrix bond in the presence of latex also seems to enhance the reinforcement properties of steel fibers in concrete.

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. 6-11

1991

Transportation Research Record

0309051053

Figures (9) ; Photos (2) ; References (5) ; Tables (6)

Crashworthiness; Fiber reinforced concrete; Flexural strength; Latex modified concrete; Steel fibers; Toughness

Impact resistance

Highways; Materials; 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 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
• SILICA FUME, LATEX-MODIFIED PORTLAND CEMENT MORTARS AND CONCRETES
• USE OF HIGH-VOLUME CLASS F FLY ASH FOR STRUCTURAL-GRADE CONCRETE
• VISUALIZATION OF CHLORIDE DISTRIBUTION IN CONCRETE (ABRIDGMENT)