Fire resistant behavior of newly developed bottom-ash-based cementitious coating applied concrete tunnel lining under RABT fire loading

Jang Jay Ho Kim, Yun Mook Lim, Jong Pil Won, Hae Geun Park

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

When tunnels are exposed to prolonged fires, they are likely to suffer heavy damage and partial collapse. Because of the difficulties involved in repairing tunnels damaged by fire, the application of fire protection coatings as a preventive measure has been widely used. The application of such coatings is a relatively simple construction method that is effective in protecting tunnel structures from collapse. However, the coating materials currently available are rather expensive and have low compressive and tensile strengths. Low strengths of coating materials can lead to fatigue failure and spalling of the tunnel linings, both during fire loading, due to internal evaporative pressure, and after fire loading, due to negative pressure from service traffic. This paper presents a newly developed fire-protection cementitious coating material, which can resist both fire and service traffic loadings. The newly developed coating material is low in cost and high in strength, qualities achieved by using bottom ash as the fine aggregate. Polypropylene fibers are used to release internal evaporative pressure via melting during thermal loading, providing a pass-through channel. The developed coating material is experimentally evaluated by means of static strength tests and RABT fire loading tests using an LPG furnace. The strength properties, failure mechanisms, and thermal protection study results for this material are discussed in detail.

Original languageEnglish
Pages (from-to)1984-1994
Number of pages11
JournalConstruction and Building Materials
Volume24
Issue number10
DOIs
Publication statusPublished - 2010 Oct 1

Fingerprint

Ashes
Coal Ash
Tunnel linings
Fires
Concretes
Coatings
Tunnels
Fire protection
Penicillin G Benzathine
Spalling
Polypropylenes
Liquefied petroleum gas
Compressive strength
Melting
Furnaces
Tensile strength
Fatigue of materials

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

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Fire resistant behavior of newly developed bottom-ash-based cementitious coating applied concrete tunnel lining under RABT fire loading. / Kim, Jang Jay Ho; Lim, Yun Mook; Won, Jong Pil; Park, Hae Geun.

In: Construction and Building Materials, Vol. 24, No. 10, 01.10.2010, p. 1984-1994.

Research output: Contribution to journalArticle

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