FLOWING CONTROLLED CONCRETE

摘要

PROBLEM TO BE SOLVED: To obtain concrete exhibiting high fluidity in a vibrated state and reducing fluidity in a vibration suspended state. SOLUTION: A prescribed fluidizing agent is added to cement so as to set the yield value of the resultant concrete at 100-250Pa and the cement is further mixed with admixtures such as fine powder of blast furnace slag, fly ash, silica fume and limestone powder so as to set the plastic viscosity of the concrete at 10-100Pa.s. For example, 20vol.% cement is mixed with 50vol.% fine powder of blast furnace slag, 25vol.% fly ash and 5vol.% silica fume.