Download e-book for iPad: Concrete for Underground Structures by Robert J.F. Goodfellow

By Robert J.F. Goodfellow

ISBN-10: 0873353463

ISBN-13: 9780873353465

ISBN-10: 0873353471

ISBN-13: 9780873353472

Concrete is a crucial element of virtually each underground building venture. since it considerably affects either the sturdiness and value of a venture, proprietors, designers, and contractors are continuously challenged with designing and putting the concrete to fulfill their caliber criteria within the least expensive way.

Concrete for Underground constructions: instructions for layout and Construction could make that job much more straightforward. rather than looking out pages of scattered reference fabrics whilst writing standards, this booklet is a one-source advisor that will help you speedy locate the solutions you need.

The first source of its variety, this useful nuts-and-bolts instruction manual offers an voice in addition to ideas for components of concrete program. you will get helpful insights into present most sensible practices for all features of the layout and building of underground structural concrete.

Internationally revered authors study 3 key purposes: cast-in-place concrete, precast concrete segmental linings, and shotcrete. every one bankruptcy addresses the diversities among aboveground and underground use. a number of the forms of concrete admixtures also are mentioned, and pattern requisites for every are included.

Concrete for Underground Structures is an imperative source for veterans in addition to a tutorial device if you are new to the profession.

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Extra resources for Concrete for Underground Structures

Sample text

Chapter 22. In Practical Tunnel Driving. New York: McGraw-Hill. pp. 373–413. 2R. 2008. Effect of Restraint, Volume Change, and Reinforcement on Cracking of Mass Concrete. Farmington Hills, MI: American Concrete Institute. org. British Tunneling Society. 2004. Tunnel Lining Design Guide. London: Thomas Telford. Bundesanstalt fur Strassenwesen (Federal Highway Research Institute). 2007. Chapter 5, Tunnelbau (Tunneling) Sections 1–5. Verkehersblatt. Zusatzliche Technicshe Vertragsbedingungen und Richtlinien fur Ingenierbauten (Transport Journal.

CAST-IN-PLACe CONCReTe 23 standard as it has been proven to be a conservative value, and its use eliminates the need for expensive spalling resistance testing. When concrete with fibers is to be placed around steel reinforcement, the interaction between the two must be checked to ensure that no cavities are created around the reinforcement. A mock-up test of a concrete placement may be necessary to be sure that the concrete mixture completely envelops the reinforcement using the planned form vibration method.

Polypropylene microsynthetic fibers are becoming popular for adding fire resistance to concrete linings. In normal concrete, high temperatures that can occur in a tunnel fire cause the free water in concrete to flash into steam and spall the concrete, thus exposing more concrete to rapid heating and spalling. The microfibers in the concrete matrix melt at a lower temperature and provide a pathway for steam to escape, reducing the spalling. The benefits are more pronounced in dense concretes (strengths in excess of 5,000 psi, or 35 N/mm2).

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Concrete for Underground Structures by Robert J.F. Goodfellow

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