Pengaruh Kalsium Karbonat (CaCO3) Sebagai Bahan Substitusi Semen pada Beton Mutu Tinggi

Nobertus Rombe Seru (Fakultas Teknik Sipil Universitas Kristen Indonesia Paulus)
Jonie Tanijaya (Fakultas Teknik Sipil Universitas Kristen Indonesia Paulus)
Lisa Febriani (Fakultas Teknik Sipil Universitas Kristen Indonesia Paulus)

Paulus Civil Engineering Journal
Vol 3 No 1 (2021): Volume 3, No.1, Maret 2021

The main constituent of cement is calcium carbonate. In concrete mixing, a materiaI that can be used as a substitute for partial cement is calcium carbonate. The purpose of this study is to determine the compressive strength, spIit tensiIe strength, and flexural strength of concrete using calcium carbonate as a substitute for partial cement in high quality concrete. The research methodology started from examining the characteristics of the aggregate, calcium carbonate, and mix design (SNI 03-2834-200), manufacturing of cylinder and beam specimens. The results show that the composition of the concrete mixture using calcium carbonate as a cement substitution indicates that the higher the percentage of variation in calcium carbonate will reduce the quality value of the concrete.