COMMENTARY

Challenges To Construction Materials Excellence: Sand Supply And Demand

The Hong Kong construction industry is bracing itself for more challenges ahead, particularly with the shortage of sand supply. The Development Bureau of Hong Kong has undertaken countermeasures, finding viable alternatives to alleviate the situation.

Over the past decade, Hong Kong has been heavily reliant on Guangdong Province for the supply of natural sand—including both river sand and marine sand. River sand is presently regarded as the second most treasured and scarce natural resource in China, after rare earth. Chinese export policy on both river and marine sand materials has become increasingly stringent as continual dredging of the seabed inevitably causes environmental contamination issues. Strict management and control must be taken to prevent further deterioration of the environment.

At the moment, the supply capacity of marine sand is relatively less in comparison to river sand. A major market for river sand in Hong Kong invariably comes from the manufacture of cement and ready-mix concrete for private/public housing and retail projects, with demand averaging 120 kilotonnes per month over the past 10 years. 

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