Correlation of UCS and CBR on Lightweight Geocomposite of Soil-EPS Stabilized by Waste of Buton Asphalt

Rauf, Ichsan; Samang, Lawalenna; Harianto, Tri; Arsyad, Ardy

doi:10.4028/www.scientific.net/msf.998.311

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…The most remarkable enhancement was observed in the mechanical properties of the samples with cement and fly ash contents of 8% and 12%, respectively. Rauf et al (2019) [21] conducted interesting research on a lightweight geomaterial that was composed of clay-EPS. Waste materials were used as the binder agent, a byproduct of the Buton Asphalt extraction process called Waste of Buton Asphalt (WBA).…”

Section: Literature Reviewmentioning

confidence: 99%

Strength Characteristic of Lightweight Modular Block (LMB) Element using Stabilized Dredged Soil-EPS

et al. 2023

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For several decades, lightweight material applications have been extensively studied. Modifying various types of soil with EPS beads or lightweight geomaterials is an alternative construction material on site that can reduce excessive problems such as large deformation and lateral pressure. This study aims to examine the strength characteristics of lightweight geomaterials, namely lightweight modular block/LMB. LMB is composed of EPS beads, dredged soil, and cement. The cement amounts are 3%, 5%, 7%, and 9%, with EPS variations of 0.5% and 0.75% to the mixture weight. Laboratory tests were conducted to investigate the strength with unconfined compression and undrained direct shear tests. Before testing, the specimens were made using the one-layer static compaction method and were cured for 7, 14, and 28 days. This paper also presents explanations related to the specimens making and treatment by providing preliminary test results to compare the effectiveness of the three-layer and one-layer methods. Moreover, the curing treatments to avoid cracking were explained explicitly. The result shows linearity between both increasing the amount of cement and adding more curing time to the increase of the strength parameter. In contrast, adding more EPS decreased the strength, but adding cement helped increase the strength parameter with a remarkable value at C7% and C9%. Increasing the amount of EPS also reduced the density of the mixture by 18%–29%. Doi: 10.28991/CEJ-2023-09-03-014 Full Text: PDF

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Section: Literature Reviewmentioning

confidence: 99%

Strength Characteristic of Lightweight Modular Block (LMB) Element using Stabilized Dredged Soil-EPS

et al. 2023

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“…In chemical stabilization efforts, many studies have explained that the chemical components of stabilization materials greatly affect the mechanical value of soft clays [14,15]. This is because the chemical bonds that occur between clay minerals and binding materials strengthen the structure of the material from within [16].…”

Section: Introductionmentioning

confidence: 99%

Proximity Porosity and Crystallinity Analysis as Clay/Nickel Slag Characteristics for Material Stabilization Application

Gaus,

Rauf,

Siregar

et al. 2024

Trends Sci

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Slag nikel is a by-product of nickel ore smelting through the pyrometallurgical process, which contains silica (> 50 %). This suggests that nickel slag, possessing pozzolanic properties, which potentially to be used as a binding material in construction projects dealing with low soil bearing capacity, such as soil improvement for road foundation. Pozzolanic reactions are greatly influenced by the chemical bonds formed between the binding material and the soil, causing mechanical characteristic changes in the soil. This study aims to examine the effect of adding nickel slag to soft soil based on changes in its physical, mechanical and chemical properties. Physical and mechanical property tests were conducted according to ASTM standards, while the changes in chemical structure in the soil were analyzed based on X-Ray Diffraction (XRD) test results. In this study, nickel slag percentages of 3, 6, 9 and 12 % were used based on the weight ratio of clay soil, at optimum water content (wopt). Furthermore, the test specimens were cured for 14, 28 and 56 days to observe the effect of time on the increase of crystal phases in each variation. The results showed that the presence of nickel slag in the soil can affect its physical and mechanical properties. The nickel slag content in the soil of 3, 6, 9 and 12 % reduces the plasticity index by 16.69, 12.02, 8.86 and 6.38 %, respectively. Meanwhile, the density values increased by 10.97, 11.27, 11.68 and 12.01 kN/m3, respectively. The changes in physical and mechanical properties can be explained by the XRD analysis results, showing changes in the spectrum curve and peak intensity of X-Ray Diffraction in the soil with the addition of nickel slag. This explanation clarifies the transformation of the soil’s atomic structure from an amorphous state to a crystalline form, which is stabilized by nickel slag. HIGHLIGHTS The silica-rich nature of nickel slag offers a feasible alternative for chemical soil stabilisation The stabilization of soft soil with nickel slag results in a decrease in the plasticity index and an increase in density Immersion duration shows a changing response for the crystallinity index and porosity of the material GRAPHICAL ABSTRACT

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“…This technical advantage is the rationale for using it as a lightweight construction material in various fields of civil engineering. Examples are its use as a substitute material for soil, applied in the geotechnical field as a lightweight embankment (Rauf et al, 2020), and as a substitute for coarse and fine aggregate in manufacturing lightweight concrete (Chen & Liu, 2004).…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength Characteristics of Lightweight Concrete with Modified EPS and Pumice Sand

Nur

Kusnadi

Rauf

2022

ijebd

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The environmentally friendly lightweight material is a concept for developing construction material technology. One way is to reduce density by using plastic waste such as Expanded Polystyrene (EPS) as the concrete aggregate. Although on the other hand, the mechanical value has decreased significantly. This research explains the development of lightweight concrete, EPS (BREA), which uses Modified EPS waste as coarse aggregate and pumice sand as fine material, obtained locally from Tidore Island. The mixture composition used in this study was 1 Cement: 2 Sand: 3 MEPS, where the compressive strength test was carried out to see its mechanical behaviour. The research shows that the composition above reduces the volume weight and compressive strength values by 56.12% and 78.46%, respectively, compared to normal concrete.

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Correlation of UCS and CBR on Lightweight Geocomposite of Soil-EPS Stabilized by Waste of Buton Asphalt

Cited by 4 publications

References 5 publications

Strength Characteristic of Lightweight Modular Block (LMB) Element using Stabilized Dredged Soil-EPS

Strength Characteristic of Lightweight Modular Block (LMB) Element using Stabilized Dredged Soil-EPS

Proximity Porosity and Crystallinity Analysis as Clay/Nickel Slag Characteristics for Material Stabilization Application

Compressive Strength Characteristics of Lightweight Concrete with Modified EPS and Pumice Sand

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