Compressive Strength Characteristic of Concrete Using Mountain Sand

The used of fine aggregate as concrete mixture in building construction is certainly
inseparable from the availability of materials. One area that has abundant reserved of fine
aggregate was in Lembang Marinding, Tana Toraja Regency, South Sulawesi Province which
can be used as fine aggregate in concrete mixture. This research was conducted to determine the
compressive strength of concrete from Lembang Marinding sand which was classified as
mountain sand as concrete mixture. This research method was carried out experimentally in the
laboratory, which was this study aims to obtain the physical properties of the material and which
will be used in concrete mixture with a concrete quality plan of f'c 25 MPa. To obtained the
results, a series of tests were carried out on 15 cm × 30 cm concrete cylindrical specimens based
on Indonesia requirements, SNI 03-2847-2019 standard, to produce compressive strength of
concrete. The results showed that the use of natural sand (mountain sand) from Lembang
Marinding can be used as fine aggregate in the concrete mixture. The average compressive
strength of the concrete produced at the age of 28 days was 26.83 MPa. The compressive strength
results obtained have met the planned concrete quality in this research.