Penggunaan Fly Ash Dan Viscocrete Pada Self Compacting Concrete

Abstract

Self Compacting Concrete (SCC) gives a new solution in concrete technology, since SCC does not need vibrator for compacting. SCC has been used and developed abroad, however in Indonesia SCC is not used because there is no research about SCC yet. In this preliminary research, trial mix is performed to understand the characteristics and to calculate the materials composition to be used in SCC. From this trial mix, some variables are fixed and others are varied. This variable is examined further in the next trial mix. The workability is examined using slump cone method and flowability using L-shaped box. From this test, it is found out that to get the condition of self compactibility, viscocrete must be used. The binder (cement-fly ash) composition, is examined using 10:0, 8:2, 7:3, 6:4 cement to fly ash ratio, until the maximum of flowability and workability, which is 5:5. Viscocrete dose 1.5 % and 2 % did not show a significant difference for all binder composition. From the workability, flowability and strength point of view, binder composition 6:4 and viscocrete dose 1.5 % gives the optimal condition.