2010年7月4日星期日

Temperature

-Temperature increases the rate of setting and hardening , and also the rate of heat evolution
-Low temperature retards setting
-Temperature below 0 celcius -the setting and hardening will stop
-THe most suitable temperature for setting and hardening is around 14-18 Celcius,with humidity not less than 90 % ( as specified by B.S 12 1958 )

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