Optimizing High Performance Self Compacting Concrete

Abstract

Abstract. This paper's objectives are to learn the effect of glass powder, silica fume, Polycarboxylate Ether, and gravel to optimizing composition of each factor in making High Performance SCC. Taguchi method is proposed in this paper as best solution to minimize specimen variable which is more than 80 variations. Taguchi data analysis method is applied to provide composition, optimizing, and the effect of contributing materials for nine variable of specimens. Concrete's workability was analyzed using Slump flow test, V-funnel test, and L-box test. Compressive and porosity test were performed for the hardened state. With a dimension of 100x200 mm the cylindrical specimens were cast for compressive test with the age of 3, 7, 14, 21, 28 days. Porosity test was conducted at 28 days. It is revealed that silica fume contributes greatly to slump flow and porosity. Coarse aggregate shows the greatest contributing factor to L-box and compressive test. However, all factors show unclear result to V-funnel test.

The characteristic of very high-performance concrete (VHPC)

“…The two mixtures were less than the limit (<5 cm). This permeability shows the compactness of concrete due to the combination of silica fume and glass powder reducing porosity of concrete which prevents the infiltration of water [38]. There was a difference of 20% between MIX-SF and MIX.…”

“…The slump loss result after one hour had insignificant decrease. Adding the glass powder improved the slump due to the low water absorption than silica fume which increased the the density of fresh mortar [12], [38]. The results indicated that VHPC had good workability.…”