PENGARUH VARIASI BAHAN TAMBAH ABU SEKAM PADI SEBAGAI PENGGANTI AGREGAT HALUS TERHADAP KUAT TEKAN PADA BETON MEMADAT SENDIRI
Abstract
Self-compacting concrete is the development of conventional concrete
that can self-compacting and flow into the no-load cracks. In this study, rice husk
ash as fine aggregate is used because it has a quantity and has not been used
maximally. The design of this self-assembled mixture uses EFNARC 2005 with
specification 0%, 20%, 40%, and 60% as rice husk ash. The added ingredients
used are superplasticizer that serve as admixture for reduving the amount of
water to achieve the self-compacted concrete specifications. The results of the
compression test at the age of 28 days with variations 0%, 20%, 40%, and 60%
respectively are: 32.6 MPa, 32.1 MPa, 27.1 MPa, and 25.0 MPa. The result show
that the more rice husk ash is used, the less the compressive strength of the
concrete.