| dc.description.abstract | Soil is a very important part in any construction work, because it functions to receive and withstand
the load from the structure above it, so the soil must have a good bearing capacity. However, clay
soils have relatively high swelling and shrinkage values and low bearing capacity. This study aims
to determine the effect of adding rice husk ash and matos to the CBR and swelling values of soil
originating from Pereng Village, Prambanan, Klaten, Central Java. This research consisted of testing
soil properties, granular analysis, consistency limits, and soil compaction, CBR unsoaked and CBR
soaked, and swelling. The results showed that based on the AASHTO classification the soil used was
included in group A-7-5 which had loamy soil with moderate to poor properties. The results of the
CBR test for unsoaked native soil were 7.580% and CBR for soaked native soil was 2.790%, and
swelling of native soil was 9.591%. After the addition of 1% matos, the unsoaked CBR value increased
to 9.998% at 7 days of curing, while the soaked CBR decreased to 1.163%. The addition of 1% matos
and 15% rice husk ash resulted in unsoaked CBR values of 16.275%, soaked CBR values of 4.883%,
and swelling of 3.871%, so that the mixture was the mixture with the most optimum percentage. | en_US |
