Abstract:
In this study, effects of crushed stone waste from Katunun's quarry as fine aggregate
on mortar and concrete properties will be examined. Samples with varying crushed stone waste
replacement ratio, ranging between 0% until 100%, will be analysed at 3, 7 and 28 days curing
time. Mortar sample is using 0.5 w/c ratio, while concrete sample is using 0.45 w/c ratio. The
mixture of mortar sample is based on SNI 03-6825-2002, whilst concrete sample is based on SNI
03-2834-2000. The examination of concrete samples workability was conducted based on the
slump test according to SNI 1972:2008. Moreover, the compressive strength test of mortar
sample is based on SNI 03-6825-2002. In addition, the compressive strength test of concrete
sample is based on SNI 1974:2011. Regarding compressive strength of mortar samples, the
average compressive strength results of mortar with crushed stone waste rose significantly in
line with the increase in replacement ratio. As for the workability of fresh concrete, sample using
natural river sand had better workability compared to sample using crushed stone waste.
However, the workability of concrete with crushed stone waste is still meet the slump value
specified in the job mix formula. In addition, it has been found out that the combination of 75%
crushed stone waste with 25% river sand will give the highest compressive strength compared
to others combinations. Based on these findings, the utilization of crushed stone waste from
Katunun's quarry in mortar and concrete mixture can be proposed.
