Minimizing defects occurrences on sfrc tunnel segment of Klang Valley MRT project

Mohammed Hakimi B Abdul Razak, Amiruddin Ismail

Research output: Contribution to journalArticle

Abstract

Steel Fibre Reinforced Concrete (SFRC) precast segment has become more demanded and common for major tunnelling works in the world. In general the impact of demand along with the fast progress of the tunnelling works will eventually affected the quality of the SFRC precast segment where past projects showed the typical defects occur on the tunnel lining were mainly on concrete spalling, leakages between the segmental lining and cracks on the precast segment. This study will focus on the factors that encourage the occurrence of these defects in order to implement a new method and procedure in minimize the defects on the precast segment. The data collected such as inspection record, visual inspection, and questionnaire distributed which aim on the method of construction were analysed and SPSS were used for descriptive of the data. The obtain results revealed that when the suggested method from the survey was implemented during the construction of the Section 2: Tunnel from KL Sentral Station to Pasar Seni Station, the numbers of leakages were dropped at 40.9% by installing a secondary lining of Ethylene Propylene Diene Monomer (EPDM) gasket. For spalling, by using lifting cage during handling of the SFRC segment bring the number of occurrences dropped at 32.4% and using protective pad for segment storage show the cracks across the segment dropped at 34%. On top of the quality control procedure and common method of works, this result revealed that by improving the area that involved workmanship does give a biggest impact in minimizing the defects on SFRC precast segment.

Original languageEnglish
Pages (from-to)13-23
Number of pages11
JournalJournal of Engineering Science and Technology
Volume10
Issue numberSpec. Issue on 4th International Technical Conference (ITC) 2014
Publication statusPublished - 2015

Fingerprint

Steel fibers
Reinforced concrete
Tunnels
Defects
Spalling
Linings
Inspection
Cracks
Tunnel linings
Leakage (fluid)
Propylene
Quality control
Ethylene
Monomers
Concretes

Keywords

  • Defects
  • Quality
  • SFRC precast segment
  • Tunnel

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Razak, M. H. B. A., & Ismail, A. (2015). Minimizing defects occurrences on sfrc tunnel segment of Klang Valley MRT project. Journal of Engineering Science and Technology, 10(Spec. Issue on 4th International Technical Conference (ITC) 2014), 13-23.

Minimizing defects occurrences on sfrc tunnel segment of Klang Valley MRT project. / Razak, Mohammed Hakimi B Abdul; Ismail, Amiruddin.

In: Journal of Engineering Science and Technology, Vol. 10, No. Spec. Issue on 4th International Technical Conference (ITC) 2014, 2015, p. 13-23.

Research output: Contribution to journalArticle

Razak, MHBA & Ismail, A 2015, 'Minimizing defects occurrences on sfrc tunnel segment of Klang Valley MRT project', Journal of Engineering Science and Technology, vol. 10, no. Spec. Issue on 4th International Technical Conference (ITC) 2014, pp. 13-23.
Razak MHBA, Ismail A. Minimizing defects occurrences on sfrc tunnel segment of Klang Valley MRT project. Journal of Engineering Science and Technology. 2015;10(Spec. Issue on 4th International Technical Conference (ITC) 2014):13-23.
Razak, Mohammed Hakimi B Abdul ; Ismail, Amiruddin. / Minimizing defects occurrences on sfrc tunnel segment of Klang Valley MRT project. In: Journal of Engineering Science and Technology. 2015 ; Vol. 10, No. Spec. Issue on 4th International Technical Conference (ITC) 2014. pp. 13-23.
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