Page 86 - The Hong Kong Green Building Council (HKGBC) 香港綠色建築議會
P. 86
Researches Sustainable Initiatives for Recycling
Marine Mud in Public Housing Developments
The Hong Kong Housing Authority (HKHA) has
been striving to make a greater contribution
towards sustainable development through the
adoption of environmentally-friendly design,
materials and construction technologies.
These are demonstrated as a case study in
the HKHA’s Kai Ching public housing estate.
The project comprised construction of six
39-storey domestic blocks, with a total
production of over 5,200 units for a population
of about 15,000 people. Various initiatives
were deployed, including the sustainable
treatment of marine mud.
The site, which is approximately 3.47 Mud (CSMM) for earthworks and Marine Mud employed without difficulty. Realising a single
hectares, was reclaimed from the foreshore Made Materials (MMMM) for blockwork. solution may not be enough, HKHA worked
of Kowloon Bay in the early 1920s for The recycling of marine mud for production of out another initiative to maximise recycling of
construction of the former Kai Tak Airport. CSMM and MMMM was the first of its kind marine mud to produce four types of MMMM,
For development purposes, it was estimated in Hong Kong. namely MMM paving blocks, MMM roof tiles,
that approximately 15,000 m3 of marine mud MMM planter kerbs and MMM protective
needed to be excavated, equivalent to six CSMM converts sticky and soft marine mud blocks to create a waterproofing membrane
standard Olympic swimming pools. To dump into a material suitable for earth filling by for a semi-sunken car park. The materials
all this into landfills would have taken four going through a cement stabilization process satisfied all the technical requirements in
days. Marine mud has no use in construction to enhance the mechanical properties of the compressive strength, skid resistance and
and, under normal circumstances, would be mud so as to achieve the necessary properties water absorption for various uses of the
disposed of in landfills or marine dumping comparable to earth filling materials. CSMM pavers, tiles and blocks.
sites. Seeing that disposal of marine mud in was used as in-situ backfilling around
a landfill was not feasible, HKHA explored pile caps in the Kai Ching project, and
initiatives to recycle and reuse the waste conventional mechanical compaction was
material. Two innovative initiatives were
developed, namely Cement Stabilized Marine
84 HONG KONG REPORT ON THE STATE OF SUSTAINABLE BUILT ENVIRONMENT 2014
Marine Mud in Public Housing Developments
The Hong Kong Housing Authority (HKHA) has
been striving to make a greater contribution
towards sustainable development through the
adoption of environmentally-friendly design,
materials and construction technologies.
These are demonstrated as a case study in
the HKHA’s Kai Ching public housing estate.
The project comprised construction of six
39-storey domestic blocks, with a total
production of over 5,200 units for a population
of about 15,000 people. Various initiatives
were deployed, including the sustainable
treatment of marine mud.
The site, which is approximately 3.47 Mud (CSMM) for earthworks and Marine Mud employed without difficulty. Realising a single
hectares, was reclaimed from the foreshore Made Materials (MMMM) for blockwork. solution may not be enough, HKHA worked
of Kowloon Bay in the early 1920s for The recycling of marine mud for production of out another initiative to maximise recycling of
construction of the former Kai Tak Airport. CSMM and MMMM was the first of its kind marine mud to produce four types of MMMM,
For development purposes, it was estimated in Hong Kong. namely MMM paving blocks, MMM roof tiles,
that approximately 15,000 m3 of marine mud MMM planter kerbs and MMM protective
needed to be excavated, equivalent to six CSMM converts sticky and soft marine mud blocks to create a waterproofing membrane
standard Olympic swimming pools. To dump into a material suitable for earth filling by for a semi-sunken car park. The materials
all this into landfills would have taken four going through a cement stabilization process satisfied all the technical requirements in
days. Marine mud has no use in construction to enhance the mechanical properties of the compressive strength, skid resistance and
and, under normal circumstances, would be mud so as to achieve the necessary properties water absorption for various uses of the
disposed of in landfills or marine dumping comparable to earth filling materials. CSMM pavers, tiles and blocks.
sites. Seeing that disposal of marine mud in was used as in-situ backfilling around
a landfill was not feasible, HKHA explored pile caps in the Kai Ching project, and
initiatives to recycle and reuse the waste conventional mechanical compaction was
material. Two innovative initiatives were
developed, namely Cement Stabilized Marine
84 HONG KONG REPORT ON THE STATE OF SUSTAINABLE BUILT ENVIRONMENT 2014
