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EKSPRIMENTAL PENGUKURAN KEPADATAN BASE COURSE DENGAN ALAT SAND CONE DAN NUCLEAR DENSITOMETER TEST Supardin Supardin; Teuku Riyadhsyah; Risma Agustina
Portal: Jurnal Teknik Sipil Vol 3, No 1 (2011)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v3i1.496

Abstract

Material or base course pavement material consists of aggregate based on the well proportioned so that the density obtained in provides support on the road. This study aims to measure the achievement of the density of base course with a sand cone and nuclear densitometer. Case studies carried out on the road Banda Aceh - Calang along 1 km from sta 76 +510 s / d 77 +650 with the testing interval is 50 m. The results of the sand cone test parameters such as: water content (w) = 6.34%, by weight content of the soil (∂ b) = 2.36 gr/cm3, dry unit weight (∂ d) = 2.25 gr/cm3, Volume holes = 1671.68 gr/cm3 and the degree of density (Dr) = 99.60%, while the nuclear densitometer test results such as: water content (w) = 4.12%, by weight content of the soil (∂ b) = 2.38 gr/cm3, dry unit weight (∂ d) = 2.41 g / cm3, and the degree of density (Dr) = 100.01%. Validation of measurements according to sig. (2-tailed), ie 0546 0050 α, then there is no significant difference in density between the two tools. Results of testing sand cone and nuclear densitometers have 0.4% difference, then both the above test methods can be used. The advantage when using sandcone time it takes relatively longer and cost less, while for the testing of nuclear densitometer test time required faster and more expensive.Keywords: density, sandcone and nuclear densitometer
Analisis Parameter Geser Tanah Lempung Hasil Stabilisasi Dengan Abu Serbuk Kayu Supardin Supardin
Jurnal Teknologi Vol 21, No 2 (2021): Oktober 2021
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (210.636 KB) | DOI: 10.30811/teknologi.v21i2.2429

Abstract

This study aims to measure the shear parameters of clay mixed with variations in sawdust ash. Utilization of wood waste which is converted into ash and then mixed with clay of low strength is expected to give the effect of more bearing capacity on the soil. Mixing percentage of sawdust ash to clay was carried out with variations of 5%, 10%, 15% and 20%. The mixing of clay soil with sawdust ash was stabilized through compaction testing, then a direct shear test was carried out to obtain shear parameters. The test results obtained were an increase in the cohesion value of the original soil 0.182 kg/cm2, an increase of 0.240 kg/cm2 successively; 0.310 kg/cm2; 0.396 kg/cm2 and decreased with the addition of 20% sawdust ash 0.237 kg/cm2. Likewise, the increase in the value of the internal shear angle, the initial condition was 5,300 and increased with the addition of wood ash from 13,310; 15,030; 18,300 and decreased on a 20% mix to 15,700. This means that the use of sawdust ash can provide the carrying capacity of clay soil to a certain level (an average of 33.5% for the cohesion value and 34.8% for the average internal shear angle value).