Unique Polymeric Fiber and Fiber Delivery Systems for the Economic Preparation of High-fiber Content Concrete with Superior Physical Properties
Unique Polymeric Fiber and Fiber Delivery Systems for the Economic Preparation of High-fiber Content Concrete with Superior Physical Properties

Author: Billy D. Neeley

Publisher:

Published: 1998

Total Pages: 256

ISBN-13:

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This report documents the results from an investigation of a new polymer fiber and unique delivery system for charging fibers into concrete mixtures. The straight Polyolefin fibers are available in two sizes: (1) 0.63 mm in diameter and 50 mm long, and (2) 0.38 mm in diameter and 25 mm long. Each of the two sizes of fibers is packaged in bundles approximately 50 mm in diameter. Each. bundle is encased with paper tape bound with a water-soluble glue. The fibers are charged into the concrete mixture in mass. Approximately 3 to 10 min of mixing time is necessary to uniformly distribute the fibers throughout the concrete mixture, depending upon the fiber content, consistency of the concrete mixture, and the type of mixer being used. Fresh and hardened properties were evaluated in mixtures containing up to 15 kg/cu m. The results indicate that concrete mixtures with the Polyolefin fibers can be produced having adequate workability and finishability if proportioned properly. Addition of the Polyolefin fibers does not significantly influence the compressive nor first-crack flexural strength, freezing-and-thawing resistance, drying shrinkage, nor the chloride permeability of concrete mixtures. However, the presence of the Polyolefin fibers does influence the post-crack behavior of concrete mixtures. Impact resistance and flexural toughness are improved as the fiber loading increases. A 6,100-m whitetopping demonstration project was constructed on a heavily traveled interstate in Mississippi. The whitetopping was 100 mm thick. Details of the specifications, construction, and early-time performance are given.

Fiber-Reinforced Cements and Concretes
Fiber-Reinforced Cements and Concretes

Author: Colin D Johnston

Publisher: CRC Press

Published: 2010-02-25

Total Pages: 261

ISBN-13: 0203860705

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This book summarizes and simplifies the results of a considerable body of research and practical experience with a wide range of fiber-reinforced cementitious composites.

Fibrous and Composite Materials for Civil Engineering Applications
Fibrous and Composite Materials for Civil Engineering Applications

Author: R Fangueiro

Publisher: Elsevier

Published: 2011-04-19

Total Pages: 422

ISBN-13: 0857092529

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The use of fibrous materials in civil engineering, both as structural reinforcement and in non-structural applications such as geotextiles, is an important and interesting development. Fibrous and composite materials for civil engineering applications analyses the types and properties of fibrous textile and structures and their applications in reinforcement and civil engineering.Part one introduces different types of fibrous textiles and structures. Chapters cover the properties of natural and man-made fibres and of yarns, as well as an overview of textile structures. Part two focuses on fibrous material use in concrete reinforcement, with chapters on the properties and applications of steel fibre reinforced concrete, natural fibre reinforced concrete and the role of fibre reinforcement in mitigating shrinkage cracks. In part three, the applications of fibrous material-based composites in civil engineering are covered. Chapters concentrate on production techniques and applications such as reinforcement of internal structures, structural health monitoring and textile materials in architectural membranes.With its distinguished editor and international team of contributors, Fibrous and composite materials for civil engineering applications is a standard reference for fabric and composite manufacturers, civil engineers and professionals, as well as academics with a research interest in this field. - Explores the development of fibrous materials in civil engineering, both as structural reinforcement and in non-structural applications such as geotextiles - Key topics include short fibre reinforced concrete, natural fibre reinforced concrete and high performance fibre reinforced cementitious composites - A standard reference for fabric and composite manufacturers, civil engineers and professionals, as well as academics with a research interest in this field

Evaluation of Non-metallic Fiber Reinforced Concrete in New Full Depth Pcc Pavements
Evaluation of Non-metallic Fiber Reinforced Concrete in New Full Depth Pcc Pavements

Author: V. Ramakrishnan

Publisher:

Published: 1998

Total Pages: 174

ISBN-13:

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This final report presents the construction and performance evaluation of a new full depth pavement, constructed with a new type non-metallic fiber reinforced concrete (NMFRC). The mixture proportions used, the quality control tests conducted for the evaluation of the fresh and hardened concrete properties, and the procedure used for mixing, transporting, placing, consolidating, finishing, tining and curing of the concrete are described. Periodic inspection of the full depth pavement was done and this report includes the results of these inspections. The feasibility of using this NMFRC in the construction of highway structures has been discussed. The new NMFRC with enhanced fatigue, impact resistance, modulus of rupture, ductility and toughness properties is suitable for the construction of full depth pavements. However, a life-cycle cost analysis shows that NMFRC is not a favorable choice, because of its high initial cost.