| Title |
Effects of Mixing Variables on the Property of High-fluidity Concrete |
| Keywords |
High-fluidity Concrete ; Slump Flow ; Superplasticizer ; Viscosity Modified Admixture ; Filling Ability |
| Abstract |
High-fluidity concrete(HFC) or Self compacting concrete(SCC) is considered as a new generation of concrete which can be used widely in case of heavily reinforced or relatively larger size of structural members in concrete structures without any vibration efforts. The researches on HFC are being conducted to verify its flowability, filling ability and segregation resistance since late 1980. There are a variety of factors that affect on these characteristics such as water-binder ratio, SP(superplasticizer) and VMA(viscosity modified admixture) contents. The present work is aimed to figure out the variations of flowability, filling ability, passing ability and compressive strength of HFC in accordance with water-binder ratio and contents of mixing variables. From the test results, the slump flow is increased linearly when water/binder and SP ratio increased within significant segregation is not occurred. Also the compressive strength is decreased linearly when water-binder ratio and SP ratio increases, and increased linearly when VMA content increases. However, passing ability showed an irregular change under various mixing variables. |