earticle

영어

This study investigates the chemical reaction of the aluminum with alkali and others of the concrete as the fundamental research for the development to improve finishability of the concrete using the aluminum form. As the results of the observation, the reaction is increased in accordance with Ca(OH)2, KOH, NaOH, and NH3OH. For the KOH and NaOH, extreme
reaction is occurred even 0.1m, and the damage for the aluminum is advanced rapidly. For the amount of the hydrogen occurrence according to changing temperature on 0.1m, it is increased in accordance with growing temperature, however it is suddenly declined at 5℃. The amount of the hydrogen occurrence increases gradually by increasing W/C of the cement paste. It is caused by reacting time between the aluminum and hydroxide of the cement and moving time of the hydrogen gas delayed on the cement paste at low W/C.