Effects of High Plasticity and Expansive Clay Stabilization with Lime on UCS Testing in Several Conditions

Nugroho, Soewignjo Agus; Wibisono, Gunawan; Ongko, Andarsin; Mauliza, Avrilly Zesthree

doi:10.22146/jcef.59438

Cited by 5 publications

(5 citation statements)

References 12 publications

(12 reference statements)

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“…Semen PCC juga dapat mengandung bahan tambahan lain seperti fly ash, slag. Ketersediaan bahan aditif, baik yang natural maupun nonnatural perlu dikaji terlebih dahulu teknisnya seperti kekuatan, ketahanan, ketersediaan, dan regulasi (Nugroho et al, 2021). Penggunaan bahan tambah beberapa material akan dikaji yaitu BAFA, POFA, bentonite, metakaolin, dan semen PCC dengan komposisi kimia seperti Tabel 1.…”

Section: Pendahuluanunclassified

Efek Penambahan Bahan Aditif Non-Alami terhadap Perilaku Lempung Plastisitas Tinggi yang Distabilisasi dengan Semen

Nugroho¹,

Wisaksono

Suharyadi³

2023

Eksergi

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Cement is proven increasing the strength of soft clays. Monmorillonite has a high shrinkage. Another hand, Kaolin has a small shrinkage. Waste material usage for stabilization agent was widely carried out this decade. BAFA (bottom ash fly ash) and POFA (palm oil fuel ash) are rich in Silica and Alumina, so they used to substitute of cement. The study examined the effect of Monmorillonite, Kaolin, BAFA and POFA on stabilization of clay with cement. Bentonite from 4% to 16% (is equated to BAFA and POFA, in ratio of 2:1) and Kaolin by 2.5%, used to reduce clay shrinkage, mixed with cement by 3% and 5%. Soil behavior will be reviewed from laboratory tests on curing-noncuring and soaked-unsoaked conditions. The results show changes in Atterberg Limits and Hydraulic Conductivity (permeability, k). Cement as well as BAFA and POFA reduce Plastic Limit greater than Liquid Limit. So, Plasticity Index decreased. It’s can be seen that cement and ash waste decreasing the permeability value. More Ash and less cement, make more impermeable soil. Addition of 3% and 5% cement increased the UCS values from 14.32 kPa to 81.20 kPa and 589.68 kPa and CBR value from 0.78% to 4.20% and 589.68 42.12% respectively

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Section: Pendahuluanunclassified

Efek Penambahan Bahan Aditif Non-Alami terhadap Perilaku Lempung Plastisitas Tinggi yang Distabilisasi dengan Semen

Nugroho¹,

Wisaksono

Suharyadi³

2023

Eksergi

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“…According to the analysis in Figure 7, it can be seen that the phase composition containing Al 2 O 3 , SiO 2, and C mainly consisted of kaolinite, mica, carbon, and other substances. These substances are relatively easier to break due to their low strength [38][39][40]; thus, they were broken and enriched in the fine-grained products. Similarly, Figure 10b shows the enrichment of elements in the fine-grained gangue, and the changing trend of the enrichment ratio (θ) of each component in the fine-grained gangue is opposite to that in the coarse-grained gangue.…”

Section: Element Enrichment At Different Discharge Ports Widthsmentioning

confidence: 99%

Experimental Investigation of Particle Size Alteration and the Selective Crushing Phenomenon of Gangue during the Jaw Crushing Process

Zhu

Song

et al. 2022

Sustainability

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This study examines the particle size and distribution of the main chemical components of gangue during the crushing process. Coal mine gangue was chosen as the research object, and its particle size and chemical components at various crusher discharge settings were examined through screening, grinding, chemical composition testing, and other methods. The findings demonstrate that the characteristic particle size in the gangue particle size distribution model has a logarithmic upward trend as the width of the discharge port increases. In contrast, the uniformity index has shown an exponential downward trend. The analysis of the distribution rate and enrichment ratio of the main chemical components of the gangue at different widths of the discharge port shows that the gangue exhibits obvious selective crushing during the crushing process. The distribution rate of each component is affected by the size of the screen aperture to various extents. As the discharge port width increases, the elements of CaO and MgO are enriched in the coarse-grained products, while those containing Fe2O3 are enriched from fine-grained to coarse-grained. Gangue particles containing Al2O3, SiO2, and C are enriched in the fine-grained product. In addition, by analyzing the alterations in the main chemical components of gangue at different particle size intervals, it was found that the amount of each component first rises and then falls, and the trend of enrichment ratio to particle size follows an exponential pattern. The research results have significance for guiding the selection of resource utilization methods of gangue with different particle sizes after crushing.

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“…Improvement of expansive clay soil can be done by adding lime [4]. Utilizing lime with percentages of 6%, 8%, 9%, 10% as a substitute for cement in stabilizing expansive clay soils with a long treatment time for soil bearing strength and development [5]. With a curing duration of 7 days, 14 days, and 28 days, adding 6% rice husk ash and 4% cement [6].…”

Section: Introductionmentioning

confidence: 99%

The Effect of WHA and Lime for Shear Strength of Clay Stabilized by Cement

Nugroho

Ongko

Fatnanta

et al. 2022

JTSP

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With the use of the additive, the clay's shear strength and bearing capacity increased. Usage waste material, Wooden Hush Ash (WHA), is tiny. The silicate content of WHA is almost the same as RHA. This study aims to utilize ASK for a stabilization material of high plasticity clay to increase shear strength. Unconfined Compression Strength (UCS) tests were performed to compare the UCS value of clay; clay with 5% cement; clay with lime; clay-cement with WHA; clay-cement with lime and WHA; and clay with lime and WHA. Before the UCS test, the sample was separated into two groups: with and without curing for 28 days, and with and without soaking for 4 days. While in conditions unsoaked, the qu value is uniform. Results show, without curing and soaked, qu values of all variations have the same value in the range of 350 kPa to 380 kPa. In conditions with curing 28 days with and without soaked, qu values range from 365 kPa to 485 kPa for mixtures with WHA and a combination of lime with ASK. While adding of 10% lime additive increases the qu value to 1100 kPa UCS testing results prove, with and without curing and soaked, lime is more optimal to increase the value of UCS than WHA. Replacement lime with WHA by 4% to 6% increases the qu value from 160 kPa to 465 kPa and 485 kPa and 110 kPa to 440 kPa to 475 kPa of soaked and unsoaked condition respectively. WHA can be used to reduce lime in soil stabilization.

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Effects of High Plasticity and Expansive Clay Stabilization with Lime on UCS Testing in Several Conditions

Cited by 5 publications

References 12 publications

Efek Penambahan Bahan Aditif Non-Alami terhadap Perilaku Lempung Plastisitas Tinggi yang Distabilisasi dengan Semen

Efek Penambahan Bahan Aditif Non-Alami terhadap Perilaku Lempung Plastisitas Tinggi yang Distabilisasi dengan Semen

Experimental Investigation of Particle Size Alteration and the Selective Crushing Phenomenon of Gangue during the Jaw Crushing Process

The Effect of WHA and Lime for Shear Strength of Clay Stabilized by Cement

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