STUDI EKSPERIMENTASI PERBANDINGAN KARAKTERISTIK CAMPURAN TANAH BERPASIR DAN KAOLIN DENGAN CARA DYNAMIC DAN STATIK COMPACTION

Gawit Hidayat
2010 unpublished
One of the many factors that affect the compaction is the way of its compaction, the common ways which used in laboratory are Standard and Modified Proctor. The aim of this research are to use the comparison of characteristic value of soil mixtures of Padalarang Sandy Soil and Nagrek Kaolinite in the static and dynamic compaction and find a relationship among CBR with Static and Dynamic Cone Penetrometer. This research shows that at the same condition of dry density and optimum water content
more » ... um water content the compacted soil with static way get static force 8 ton and 11 ton to close standard and modified proctor results, and also to have the characteristic values less bigger than dynamic one about 3.75% to 46.68%. This item can be shown by permeability tests and the characteristics by california bearing ratio, static and dynamic cone penetrometer. Besides the water content, the percentage of Padalarang Sandy Soil and Nagrek Kaolinite's mixture very affect the mechanic properties such as increasing of soil against the mixture with Nagrek Kaolinite will tend decreasing the CBR and qc value and increasing N DCP value. The trend of regresion curve resulted by static and dynamic compaction is similar. The approach equations which often used are non linear equations therefore the results are in a good enough and satisfied regresion coefficient about 0.8 to 1. Based on the result of tests also show that the soil mixtures of Padalarang Sandy Soil and Nagrek Kaolinite is not stable against soaked process where can be seen with the tedency of the characteristic value can not be measured in the soaked condition. Kata kunci : Static Compaction, Dynamic Compaction 1. Pendahuluan 1.1. Latar Belakang Kompaksi adalah pemadatan tanah yang dilakukan dengan energi mekanik. Untuk tanah cohesionless lebih efisien apabila dikompaksi dengan vibrasi. Sedangkan untuk material tanah yang berbutir halus dan tanah-tanah cohesive lebih sesuai dengan dynamic compaction (proctor), kneading compactors (gyratory) dan static (sistem pembebanan press). Untuk pekerjaan di lapangan untuk tanah-tanah berbutir kasar (cohesionless soil) pengkompaksiannya biasanya dilakukan dengan hand-operated vibrating plate, vibratory roller dengan berbagai ukuran. Sedangkan untuk tanah-tanah berbutir halus menggunakan peralatan kompaksi antara lain seperti hand operated tamper, sheepsfoot roller, rubber-tired roller, dan tipe-tiper alat-alat kompaksi berat lainnya.
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