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T. Harianto
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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GEOSLICIER AND ITS APPLICATION FOR SOIL STRATA ANALYSIS T. Harianto; T. Hino; R. Jia; K. Ohgushi; T. Ichihara
Lowland Technology International Vol 15 No 1, June (2013)
Publisher : International Association of Lowland Technology

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Many "nogoshi" i.e, lower sections of the river bank that allow upstream floodwater overflow, have been built on the Jobaru River in Kyushu Island, Japan. The soil strata in the floodpain adjacent to the Yago Nogoshi of the Jobaru River were studied using a Geoslicier. The sedimentary facies and the sedimentary ages of the soil strata were determined using Geoslicier samples. The sedimentary environmental of the test site was defined, and soil strata formed by sediments during large floods were identified. The layers below ground level (G.L.) -1.50 to -1.70 m are river channel deposits, and the layers above G.L. -1.50 to -1.70 m are back marsh deposits. The result of radiocarbon dating show that the river channel deposits were formed before AD 1500. The lower layers of the back marsh deposits, which contain a considerable quantity of plan roots, were formed at approximately AD 1600. The upper layers of the back marsh deposits, which contain a small quantity of plant roots, were formed after AD 1600. The time of artificial land alterations was deduced based on the results of the sample analyses.
Strength Improvement of Cement Stabilized Soil by Binder Mineral Additive T. Harianto; F. Sitepu; Jasrudin .
Lowland Technology International Vol 21 No 2, Sep (2019)
Publisher : International Association of Lowland Technology

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The stability of the underlying soil significantly influences pavement construction for long-term performance. Subgrades often have a low bearing capacity in order to achieve adequate capacity under traffic loading. This study presents the strength and bearing capacity of the road pavement by utilization of a binder mineral powder for soil-cement stabilization. The Unconfined Compression Test (UCT) and California Bearing Ratio (CBR) test conducted at optimum moisture content (OMC) and maximum dry density (MDD). The dry-wet cycle (D-W) test also conducted to observe the strength behavior of the stabilized soil. The results show that the mix of the binder mineral and soil-cement, resulting in higher strength and bearing capacity. The strength characteristics of stabilized soil with binder mineral tend to decrease for the initial cycle slightly. In contrast to untreated soil, the strength significantly decreased by subjected to the wet-dry cycle test. These characteristics change of stabilized soil may lead to potential using of binder mineral as an additive for soil-cement stabilized.
Experimental Study On Clay Stabilization With Waste Limestone From Marble Industri A. B. Muhiddin; T. Harianto; A. Arsyad; Indrayanti .
Lowland Technology International Vol 21 No 3, Dec (2019)
Publisher : International Association of Lowland Technology

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In this research, chemical stabilization on clay soils was performed using waste limestone powder from marble industry and acrylic acid. The research was aimed to analyze the characteristics of waste marble, to analyze clay strength before and after stabilized with waste marble powder, to analyze the effect of acrylic acid as activator in clay stabilization using waste marble, and finally to study the microstructure of soil stabilized by marble powder and acrylic acid solution. Laboratory tests were performed by mixing marble powder in the amount of 5%30% of clay and with addition of acrylic acid solution as much as 5%-15% of water mixed. For soil microstructure study, SEM and XRD tests were conducted. Clay mixture with 20%-30% of marble powder increased CBR value to more than 6%. Addition of acrylic acid solution with optimum content of marble powder with 3- and 7-day curing increased the value of UCS to medium consistency. Marble powder contains dominantly of CaO compound of 97.15% which is an effective material for clay soil stabilization. These results show that the mixture of clay with marble powder and acrylic acid as stabilization agents could increase soil bearing capacity for road subgrade layer.
Co-Authors A. Arsyad A. B. Muhiddin F. Sitepu Indrayanti . K. Ohgushi Pusaka, Semerdanta R. Jia T. Hino T. Ichihara