00616320

Component

http://onlinepubs.trb.org...trr/1991/1301/1301-007.pdf

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

Performance of structural-grade concrete incorporating high volumes of low-calcium fly ash was invvestigated. Two different ASTM Class F fly ashes were used. A portland cement concrete designed to have 28-day compressive strength of 6,000 psi (41 MPa) was used as a control concrete. Concrete mixes were also designed to have fly ash substitution based on total cement weight in the range of 0 to 60% by weight. The water-cement ratio was maintained approximately constant and the desired workability was achieved by using a superplasticizer. Concrete was tested for compressive strength, splitting tensile strength, and modulus of elasticity in accordance with ASTM test methods. Compressive strength and splitting tensile strength of concrete were determined at ages 1, 7, and 28 days, whereas modulus of elasticity was determined at 7 and 28 days. High replacement of cement by fly ash in concrete caused reduction in compressive strength, splitting tensile strength, and modulus of elasticity within the experimental range. Compressive strength of fly ash concrete was slightly lower than the reference concrete up to fly ash addition of 60%. However, fly ash concretes achieved adequate strengths appropriate for structural application even at the 60% cement replacements.

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. 40-47

1991

Transportation Research Record

0309051053

Figures (8) ; References (17) ; Tables (6)

Compressive strength; Concrete; Concrete structures; Fly ash; Mix design; Modulus of elasticity; Portland cement concrete; Superplasticizers; Tensile strength; Water cement ratio; Workability

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 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
• SILICA FUME, LATEX-MODIFIED PORTLAND CEMENT MORTARS AND CONCRETES
• VISUALIZATION OF CHLORIDE DISTRIBUTION IN CONCRETE (ABRIDGMENT)