Quality Assurance of Shotcrete on a Railway Line Project

ACC Limited
Publication Type:
Journal Article
The Indian Concrete Journal, 2016, 90 (6)
Issue Date:
Filename Description Size
Quality assurance for railway shotcrete.docAccepted Manuscript Version10.05 MB
Microsoft Word
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Specification for shotcrete specifies control over slump, time lag between batching and placing, compressive strength, shotcrete thickness, density and permeability. The wet-mix shotcrete is required to have quality control over the workability for easy pneumatic placement, minimum rebound and good compaction. This paper reports the quality assurance experience gained from a project involving 2700 cubic metre of shotcrete, during the construction of 35 km long Southern Sydney Freight Line project, lasted over 3 years. The field experience showed that quality assurance specification for shotcrete mix must be followed to ensure the quality of placed shotcrete.
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