| dc.description.abstract | Light pile is an alternative that is used to overcome the problem of soil that has a low bearing capacity.
Manufacture of light piles as construction materials using industrial solid waste as pozzolanic materials
that are used as binders to replace OPC cement. In addition, the use of crumb rubber based on previous
research has a role as a substitute for sand. This research also utilizes palm fiber as reinforced concrete
which has high resistance. As a fixed variable in this study is the comparison of the use industrial waste,
while the independent variables in this study were the composition of crumb rubber as a substitute for
sand, the composition of the processed fiber as a substitute for sand, curing method (open air and
immersion). The test specimens were made by adopting the mixed design of Standard ASTM C 109. The
dimensions of the test specimens were cubes (50 x 50 x 50) mm to calculate the specific gravity and test
the compressive strength. The light pile produced from this study has the best average compressive
strength value in the V3 variation mixture, namely the average compressive strength value in the open
air curing method of 3.73 MPa or 0% against Control K2 which is 3,73 MPa and in the immersion
curing method of 3.60 MPa or 28,35% With the open air curing method, V6 has the smallest average
density of 1.12 g/cm3 or 46,35% against K2 which is 2.08 gr/cm3 while the immersion curing method V5
has the lowest average density. small, namely 1.06 g/cm3 or 51,11% of the specific gravity value of K2
which is 2.17 g/cm3. In the open air curing method the value of the strength activity index (SAI) against
K2 is 100% and the composition of V1 has the highest SAI against K2, which is 94.74%. In the immersion
curing method, the SAI value to K2 is 100% and the composition of V3 has the highest SAI to K2, which
is 100%. The immersion curing pattern in various variations shows the SAI to K2 which tends to be
higher than the open air curing and at V3 it reaches 100%. | en_US |
