Expansive Soil Stabilization by Cinder of Coconut Husk

2019 ◽  
Author(s):  
Devaanshi Jagwani ◽  
Akash Jaiswal
Keyword(s):  
Soil Stabilization ◽  
Expansive Soil ◽  
Coconut Husk

scholarly journals STABILISASI TANAH EKSPANSIF MENGGUNAKAN KAPUR DAN SPENT CATALYST UNTUK TANAH DASAR PERKERASAN

2019 ◽  
Vol 19 (1) ◽  
pp. 21-30
Author(s):  
Arifudin Nur ◽  
Suryo Hapsoro Tri Utomo ◽  
M. Zudhy Irawan
Keyword(s):  
Soil Stabilization ◽  
Expansive Soils ◽  
Expansive Soil ◽  
Petroleum Processing ◽  
Spent Catalyst ◽  
Maximum Increase ◽  
Lime Content ◽  
Road Pavement ◽  
Pozzolanic Material ◽  
Spent Catalysts

Abstract Expansive soils have high swelling and shrinkage potentials, which may cause damage to road structures. Therefore, stabilization is required. One method of stabilization is to use lime and spent catalysts with the aim of increasing carrying capacity and reducing swelling. Spent catalyst is a petroleum processing waste and classified as pozzolanic material. The addition of lime and spent catalysts can increase the CBR value and reduce swelling of soils. The results of this study indicate that the maximum increase in soaked CBR and unsoaked CBR values occurred in soil mixtures with optimum lime content and 12% spent catalyst with 7 days of curing. While the soil mixture with optimum lime content and 12% spent catalyst, with 7 days of curing, is the best mixture that produces soaked CBR value of 49.67%, swelling of 0.15%, and plasticity index value of 11.97%, so the soil meets the requirements to be used as pavement subgrade. Keywords: expansive soil, stabilization, road structure, subgrade, road pavement  Abstrak Tanah ekspansif memiliki potensi pengembangan dan penyusutan yang tinggi, sehingga dapat menyebabkan kerusakan struktur jalan. Oleh sebab itu, perlu dilakukan stabilisasi. Salah satu metode stabilisasi adalah menggunakan kapur dan spent catalyst dengan tujuan meningkatkan kapasitas dukung dan menurunkan swelling. Spent catalyst merupakan limbah pengolahan minyak bumi dan termasuk bahan pozzolan. Penam-bahan kapur dan spent catalyst mampu meningkatkan nilai CBR dan mereduksi swelling. Hasil studi ini menunjukkan bahwa peningkatan maksimum nilai CBR soaked maupun CBR unsoaked terjadi pada campuran tanah dengan kadar kapur optimum dan 12% spent catalyst dengan peraman 7 hari. Sedangkan campuran tanah dengan kadar kapur optimum dan 12% spent catalyst, dengan peraman 7 hari, merupakan campuran terbaik yang menghasilkan nilai CBR soaked sebesar 49,67%, swelling sebesar 0,15%, dan nilai indeks plastisitas sebesar 11,97%, sehingga tanah memenuhi syarat untuk digunakan sebagai tanah dasar perkerasan jalan. Kata-kata kunci: tanah ekspansif, stabilisasi, struktur jalan, tanah dasar, perkerasan jalan

scholarly journals Use of Nanomaterials in the Stabilization of Expansive Soils into a Road Real-Scale Application

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3058
Author(s):  
Julia Rosales ◽  
Francisco Agrela ◽  
José Ramón Marcobal ◽  
José Luis Diaz-López ◽  
Gloria M. Cuenca-Moyano ◽  
...  
Keyword(s):  
Soil Stabilization ◽  
Expansive Soils ◽  
Expansive Soil ◽  
Subsequent Development ◽  
Base Layer ◽  
The Road ◽  
Road Section ◽  
Control Section ◽  
Technical Specifications ◽  
Real Scale

Stabilization is a traditional strategy used to improve soils with the main objective of ensuring that this base is compliant with the technical specifications required for the subsequent development of different infrastructures. This study proposes the use of commercial nanomaterials, based on a solution of silicates, to improve the technical characteristics and bearing capacity of the expansive soil. A physical–chemical property study was carried out on the additive nanomaterial. Subsequently, different mixtures of expansive soil, selected soil and artificial gravel with quicklime and commercial nanomaterials were developed to evaluate the improvement obtained by the use of nanomaterials in the technical characteristics of the soil. Compressive strength and the Californian Bearing Ratio index were considerably increased. A full-scale study was carried out in which the nanomaterial product was applied to two different sections of stabilized road compared to a control section. The results obtained showed that the use of nanomaterial led to the possibility of reducing the control section by 30 cm, thus achieving less use of quicklime and a mechanical means for preparing the road section. The use of commercial nanomaterial improved the behavior of the stabilized sub-base layer. Through life cycle assessment, this study has shown that the use of nanomaterials reduces the environmental impact associated with soil stabilization.

Development of Stabilizer Selection Tables for Low-Volume Roads: Arlington, Texas

2003 ◽  
Vol 1819 (1) ◽  
pp. 85-94 ◽  
Author(s):  
Martin Phillips ◽  
Anand J. Puppala ◽  
Keith Melton
Keyword(s):  
Construction Projects ◽  
Soil Stabilization ◽  
Task Force ◽  
Expansive Soil ◽  
Evaluation Process ◽  
Extensive Literature ◽  
Treatment Methods ◽  
Subgrade Soils ◽  
Low Volume ◽  
Materials Used

Expansive soil movements cause damage to low-volume traffic roadways, which is attributed to the low rigidity of the materials used in the pavements. Several treatment methods have been used to stabilize expansive, soft subsoils, which have yielded mixed results due to the presence of sulfates. Because of the ambiguity of these results, the city of Arlington, Texas, established a task force of researchers and practitioners in the area of soil stabilization to develop matrix tables of the various treatment methods and their applicability to stabilize expansive, soft, and sulfate-rich soils. Extensive literature compiled on the stabilizers, several new and previous research studies on stabilizers, and the expertise of the task group members were considered in the evaluation process. The task force developed seven matrix-form selection tables that showed various treatment methods and if their applications were acceptable or unacceptable for the 12 types of soft and sulfate-rich subgrade soils. A summary of the tables was prepared, along with guidelines on how to use these tables to screen the potential stabilizers for pavement construction projects.

scholarly journals Sustainable Improvement of Expansive Clays Using Xanthan Gum as a Biopolymer

2019 ◽  
Vol 5 (9) ◽  
pp. 1893-1903 ◽  
Author(s):  
Jayaprakash Reddy Joga ◽  
B.J.S. Varaprasad
Keyword(s):  
Xanthan Gum ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Direct Shear Tests ◽  
Sustainable Improvement ◽  
Curing Period ◽  
Proctor Test ◽  
Gum Content

In this study, Biopolymers are used as an attempt to create sustainable environment by eliminating the negative environmental impacts of using traditional admixtures in soil stabilization. Xanthan Gum is used as a biopolymer to treat expansive soil. A series of tests like, Standard Proctor Test, Unconfined Compressive Strength (UCS), One-Dimensional Consolidation and Standard Direct Shear tests were conducted on virgin soil and biopolymer (0, 0.5, 1, 1.5, 2, 2.5%) treated soils. The results revels that by addition of biopolymer content Maximum Dry Density (MDD) of soil decreases and Optimum Water Content (OMC) increases. The UCS value is increased by 4 times for the addition of 1% xanthan gum to soil for 28 day curing period. Compressibility of soil is deceased by 65% for 28day curing period. Shear parameters of treated soil shows improvement with addition of xanthan gum content. For further examination, SEM analyses were conducted on the tested samples and revealed that the soil fabric had white lumps and pores in the soil structure were filled with cementitious gel. Moreover, the resistance towards shear and compressibility of treated samples increased with curing times. Therefore, use of Xanthan Gum for soil stabilization is a solution for eco-friendly soil stabilizing material.

scholarly journals Stabilization of Black Cotton Soil with Groundnut Shell Ash

2021 ◽  
Keyword(s):  
Shear Strength ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Soil Samples ◽  
Black Cotton Soil ◽  
Naturally Occurring ◽  
The Subject ◽  
Groundnut Shell ◽  
Groundnut Shell Ash ◽  
Properties Of Soil

Abstract. The analysis of GSA for the stabilization of soil samples is the subject of this research paper. In recent years, soil stabilization techniques have been effective in improving the shear strength parameters of poor soils. GSA is a naturally occurring substance that causes human health and environmental issues. Physical properties of soil were calculated, including Atterberg's limits, compaction characteristics, and strength characteristics of virgin soil samples. GSA was applied to the soil in various percentages (2 to 10 percent). The soil sample's intensity increased up to 6% before decreasing. It is clear that 6% of GSA to the soil is an optimum percentage and it leads to an increase in shear strength and bearing capacity in expansive soil.

scholarly journals Stabilization of black cotton soil using coconut fiber

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
K.U. Arathi ◽  
K.M. Arhulya ◽  
V. Vinaya ◽  
P.V. Pooja ◽  
V.V. Athira
Keyword(s):  
Compression Strength ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Liquid Limit ◽  
Black Cotton Soil ◽  
Unconfined Compression Strength ◽  
Unconfined Compression ◽  
Coconut Fiber ◽  
Loaded Structure ◽  
Properties Of Soil

Black cotton soil is a soil with low bearing capacity, swelling and shrinkage characteristics. Due to its peculiar characteristics, it forms a very poor foundation material. As black cotton soil is an expansive soil; it creates problem for lightly loaded structure than moderately loaded structure. Through this project, we are trying to study the improvements in the properties of soil by adding coconut fiber of varying percentages. Tests will be conducted to determine liquid limit and unconfined compression strength. Stabilization of soil is an effective method for improving the properties of soil. It has great significance in the future projects. Keywords: Soil stabilization, CBR, Atterberg limits

scholarly journals Experimentation on Stabilization of Problematic Clays by using Lime and Asphalt Emulsion

2019 ◽  
Vol 8 (12S) ◽  
pp. 967-973
Keyword(s):  
Structural Properties ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Point Of View ◽  
Asphalt Emulsion ◽  
Load Bearing Capacity ◽  
Stabilization Process ◽  
Subgrade Soil ◽  
Testing Techniques ◽  
Roadway Construction

Soil stabilization with liquid asphalt is considered as a sustainable step towards roadway construction on problematic subgrade soil, there are no requirements to import good quality materials or to implement energy consumption, but to mix the readily available soil with liquid asphalt through the cold mix technique. In this work, expansive soil obtained from Manali, Chennai was mixed with asphalt emulsion, lime, and combinations of lime and asphalt emulsion (combined stabilization) and tested in the laboratory for California bearing ratio in dry and soaked conditions. Field trial sections have been prepared with the same combinations and subjected to plate bearing test. The influence of combined stabilization on the structural properties in terms of load bearing capacity and deformation under both testing techniques have been monitored and analyzed. It was concluded that 17% of asphalt emulsion and 6% lime can furnish a suitable combined stabilization process from the structural properties requirements point of view.

scholarly journals Investigation on the performance of ‘Fino’ materials to stabilize expansive soil: A case study in Yeka Sub-City, Addis Ababa, Ethiopia

2021 ◽  
Vol 6 (2) ◽  
pp. 044-050
Author(s):  
Tsion Mindaye ◽  
Emer Tucay Quezon ◽  
Temesgen Ayna
Keyword(s):  
Soil Stabilization ◽  
Addis Ababa ◽  
Research Result ◽  
Expansive Soil ◽  
Liquid Limit ◽  
Engineering Properties ◽  
Natural State ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Proctor Test

Expansive soil swells when it is wet, and it will shrink when it dries. Due to this behavior of the soil, the strength and other properties of soil are inferior. To improve its properties, it is necessary to stabilize the soil with different stabilizers. Soil stabilization is a process to treat the soil to maintain, alter, or improve expansive soil performance. In this study, the potential of 'Fino' as stabilizing additive to expansive soil was investigated for the improving engineering properties of expansive soil to be used as subgrade material. The evaluation involved the determination of the Free Swell test, CBR test, Atterberg's limits, and the Proctor test of expansive soil in its natural state as well as when mixed with varying proportions of 'Fino.' The practices were performed on six proportions 5%, 10%, 15%, 20%, 25% and 30 % with expansive soil. The research result indicated a considerable reduction in Swelling, and the Maximum dry Density of soil was improved. Optimum moisture content decreased in increasing 'Fino.' At 30% of 'Fino,' the CBR values of expansive soil increased from 1.06% to 5.94%, Liquid Limit decreased from 95.2% to 29.4%, plasticity index decreased from 57.24% to 17.82% and the degree of expansion of the natural subgrade soil has reduced from "very high to medium." Hence, it is concluded that the 'Fino' at 30% has shown significant improvement in the expansive soil's engineering properties meeting the ERA and AASHTO Standard specifications requirements for road subgrade material.

scholarly journals Utilization of Cementitious Material from Residual Rice Husk Ash and Lime in Stabilization of Expansive Soil

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Yuyi Liu ◽  
Yunhe Su ◽  
Abdoullah Namdar ◽  
Guoqing Zhou ◽  
Yuexin She ◽  
...  
Keyword(s):  
Rice Husk ◽  
Soil Stabilization ◽  
Rice Husk Ash ◽  
Expansive Soil ◽  
Strength Properties ◽  
Cementitious Material ◽  
Initial Water Content ◽  
Time Deformation ◽  
Mix Proportion ◽  
Deformation Properties

Geological disasters often occur due to expansion and shrinkage properties of expansive soil. This paper presents a cementitious material combined with rice husk ash (RHA) obtained from biomass power plants and lime to stabilize expansive soil. Based on compressive and flexural strength of RHA-lime mortars, blending ratio of RHA/lime was adopted as 4 : 1 by weight for soil stabilization. When mix proportion of RHA-lime mixture varied from 0% to 20%, specific surface area of stabilized expansive soil decreased dramatically and medium particle size increased. The deformation and strength properties of stabilized expansive soil were investigated through swelling test, consolidation test, unconfined compression test, direct shear test, and so on. With increase in RHA-lime content and curing time, deformation properties including swelling potential, swelling pressure, compression index, crack quantity, and fineness of expansive soil lowered remarkably; meanwhile, strength properties involving unconfined compressive strength, cohesion, and internal friction angle improved significantly. Considering engineering performance and cost, mix proportion of 15% and initial water content of 1.2 times optimum moisture content were recommended for stabilizing expansive soil. In addition, effectiveness of RHA-lime to stabilize expansive soil was achieved by replacement efficiency, coagulation reaction, and ion exchange.

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