CONCRETE TECHNOLOGY VITAL TO WORKS DEVELOPMENT PROGRAMMES
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MORE THAN ONE-AND-A-HALF MILLION CUBIC METRES OF CONCRETE BE CONSUMED BY WORKS UNDER THE PORT AND AIRPORT DEVELOPMENT STRATEGY (PADS), THE SECRETARY FOR WORKS, MR KENNETH KWOK, SAID TODAY (MONDAY).
ADDRESSING THE CONFERENCE ON CONCRETE TECHNOLOGY AND CONSTRUCTION ORGANISED BY THE HONG KONG INSTITUTION OF ENGINEERS, MR KWOK SAID THE PADS WAS ONE OF THE MOST AMBITIOUS INFRASTRUCTURAL DEVELOPMENT PROGRAMMES IN THE WORLD.
HE SAID IN TERMS OF CEMENT CONSUMPTION, HONG KONG SHARED THE POSITION AT THE TOP OF THE INTERNATIONAL TABLE WITH GERMANY. ITALY AND JAPAN AT AROUND 700 KILOGRAMS PER HEAD OF POPULATION.
"CONCRETE, THEREFORE, IS OF FOUNDAMENTAL IMPORTANCE то THE CONTINUED SUCCESS OF THE INTENSIVE PHYSICAL DEVELOPMENT PROGRAMMES IN HONG KONG," MR KWOK SAID.
MORE THAN NINE-AND-A-HALF MILLION CUBIC METRES OF CONCRETE, WHICH COST ABOUT $4 BILLION, WOULD BE USED THIS YEAR, WHILE IN 1967, ONLY 1.8 MILLION CUBIC METRES WERE CONSUMED.
"SINCE THEN, WE HAVE BUILT SIX NEW TOWNS AND TWO MORE ARE UP AND COMING.
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THERE ARE ALSO 43 KILOMETRES OF MASS TRANSIT RAILWAY, KILOMETRES OF ROAD AND BRIDGE WORKS, AND PUBLIC HOUSING FOR TWO-AND-A-HALF MILLION PEOPLE, HE ADDED.
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OUTLINING THE DEVELOPMENT IN CONCRETE TECHNOLOGY, MR KWOK IN RECENT YEARS CONCRETE OF UP TO TWO TO THREE TIMES THE PREVIOUS CONVENTIONAL STRENGTHS HAD BEEN USED.
FORMWORK AND PLACING TECHNIQUES HAD BEEN ADVANCED то GIVE SHORT CYCLE TIMES, SOME DOWN TO THREE DAYS, HE SAID.
"THE WORLDWIDE TREND IS FOR HIGHER, STRONGER BUT MORE EFFICIENT STRUCTURES, MR KWOK SAID.
SUCH DEVELOPMENTS HAD NECESSITATED EQUIVALENT MATERIALS TECHNOLOGY AND QUALITY ASSURANCE, HE SAID.
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HE NOTED THAT THERE WAS MUCH ADVANCEMENT ON CONCRETE TECHNOLOGY, INCLUDING THE ASPECTS OF CONCRETE MIX DESIGN AND CEMENT PROPERTIES.
"ON THE OTHER HAND, STRUCTURAL DESIGNS BECAME MORE EXACTING, THINGS WERE GENERALLY DONE MUCH QUICKER, MR KWOK SAID.
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