Abstract

Granitic rocks are the major source of crushed fine and coarse aggregates for use in concrete in Hang Kong. The existing quarries are situated in a variety of granite types. Although some quarries produce coarse aggregates with better properties, most are considered unsuitable for special purposes.

Laboratory testing of the various granite types present in the Territory indicates that fine-grained granites have superior mechanical and physical properties in comparison with other granite types and hence are potentially suitable for many special concrete purposes.

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