00676692

Component

http://onlinepubs.trb.org...trr/1994/1458/1458-009.pdf

https://scholar.google.co...hnan&publication_year=1994

A comparative evaluation of physical properties for plain concrete and concrete reinforced with collated fibrillated polypropylene fibers is presented. Three concentrations of fibers, 0.1, 0.2, and 0.3 percent by volume, were evaluated. Evaluation included concretes with the fiber dosages indicated and a plain or control mix in two series: (a) fresh concrete properties, namely slump, unit weight, vebe time, air content, and concrete temperature; and (b) hardened concrete properties, such as compressive strength, static modulus, modulus of rupture, and pulse velocity at 7 and 28 days--the second being the replicate. Toughness indexes based on ASTM C1018, as well as the flexural toughness factors, were calculated. In addition, an equivalent flexural strength based on the Japanese standard was obtained. Inspection of plastic mixes and failed test specimens showed that there was no balling of fibers during mixing and fabrication of test specimens. There was a slight increase in the flexural strength as the fiber content increased. Addition of fibers produced less than 5% difference in the static modulus, compressive strength, and pulse velocity. On the basis of I sub 5, I sub 10 and I sub 20 toughness index data, the fiber concretes exhibited elasto-plastic behavior.

This paper appears in Transportation Research Record No. 1458, Concrete Research. 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

01401262

English

p. 57-66

1994

Transportation Research Record

0309060656

Figures (9) ; References (8) ; Tables (3)

Air content; Compressive strength; Elastoplasticity; Fiber reinforced concrete; Fibers; Flexural strength; Modulus of rupture; Physical properties; Polypropylene; Pulses; Slump test; Toughness; Velocity

Fiber content; Pulse velocity

Highways; Materials; I32: Concrete

TRIS, TRB, ATRI

Apr 28 1995 12:00AM

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• DEVELOPMENT OF CONCRETE DURABILITY SPECIFICATION AND RATINGS IN FLORIDA
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• EFFECT OF NATURAL POZZOLAN ADDITION ON EXPANSIONS CAUSED BY ALKALI-SILICA REACTION
• IMAGE ANALYSIS OF PORTLAND CEMENT CONCRETE AND ASPHALT CONCRETE PAVEMENTS USING SCANNING ELECTRON MICROSCOPE IMAGES (WITH DISCUSSION AND CLOSURE)
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• INTERPRETATION OF ACCELERATED TEST METHOD ASTM P214 TEST RESULTS
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• SYSTEM OPTIMIZATION OF FAILURE, CONSTITUTIVE MODELING, AND STRENGTHS OF CONCRETE AND OTHER GEOLOGICAL MATERIALS USING GENETIC ALGORITHM
• USE OF MATURITY AND PULSE VELOCITY TECHNIQUES TO PREDICT STRENGTH GAIN OF RAPID CONCRETE PAVEMENT REPAIRS DURING CURING PERIOD