Soil stabilisation Research Papers - Academia.edu (original) (raw)

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- Soil stabilisation

According to IRC recommendation, the California bearing ratio (CBR) value of subgrade is used for design of flexible pavements. The design of pavement may affect by the material which is used as pavement material. Black Cotton soil is expansive soil which expand when it contacts with water and this is the major reason of failure of black cotton soil strata. The engineering properties of black cotton soil may be used by fibre, ash, lime and sludge etc. CBR value depends on the liquid limit (Wl), Plastic limit (Wp), plasticity index (Ip), maximum dry density, optimum moisture content, swelling pressure, degree of expansiveness and permeability of soil or mix specimen. These tests are performed in laboratory. This research paper deals with design of flexible pavement by using black cotton soil with different percentage of sugarcane bagasse ash. In this research, the sugarcane bagasse ash is mixed from 10% to 40% in black cotton soil. The engineering parameters are also determined by performed tests. For studying the behaviour of black cotton soil with different percentage of sugarcane bagasse ash, the Atterberg's limits (Liquid Limit, Plastic Limit, Plasticity Index), standard proctor test, California Bearing Ratio are performed.

The soil may be classified as cohesive soil and non – cohesive soil. Cohesive soils are black cotton soil or fine soils and non – cohesive soils are sand or coarse soils. The cohesive soils are having property of expansive or shrunk. The black cotton soil is serious problem for geotechnical engineers and it is required to be treated before the construction of superstructures. Grouting and stabilization etc. methods are available for treatment of black cotton soil or expansive soils. In this research paper, review is made on comparative study of stabilization of black cotton soil by natural and artificial fibre. Natural fibres are those which is obtained from nature i.e. coconut fibre, jute fibre, sisal fibre etc. and artificial fibres are those which is manmade i.e. nylon fibre, polypropylene and polyethylene terephthalate etc. Many researchers performed experiments on stabilization of black cotton soil by natural fibre, artificial fibres and combination of different admixture with fibres. The study of liquid limit, plastic limit, standard proctor test and California bearing ratio test is also done for different types of fibre and conclusions are mapped. From study the statement is made that artificial fibre may decompose gradually compare to natural fibres

- by manu manon
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- Civil Engineering, Failure, Soil stabilisation, Shear Strength

Soil stabilization can be explained as the alteration of the soil properties by chemical or physical means in order to enhance the engineering quality of the soil. The main objectives of the soil stabilization is to increase the bearing capacity of the soil ,its resistance to weathering process and soil permeability. The long-term performance of any construction project depends on the soundness of the underlying soils. Unstable soils can create significant problems for pavements or structures, Therefore soil stabilization techniques are necessary to ensure the good stability of soil so that it can successfully sustain the load of the superstructure especially in case of soil which are highly active, also it saves a lot of time and millions of money when compared to the method of cutting out and replacing the unstable soil. This paper deals with the complete analysis of the improvement of soil properties and its stabilization using lime.

- by Karunesh Bhangalia
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- Soil stabilisation
- by IJERA Journal
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- Civil Engineering, Soil stabilisation

Ecofriendly, ecoefficient and sustainable civil engineering work has been research with emphasis on
adapting the byproducts of solid waste recycling and reuse to achieving infrastructural activities with low
or zero carbon emission. The direction combustion model, the solid waste incinerator caustic soda oxides
of carbon entrapment model (SWI-NaOH-OCEM) developed by this research has achieved a zero carbon
release. This research adopted the literature search method to put together research results of previous works relevant to the aim of this present work. It has been shown that CO and CO2 emissions
can be contained during the derivation of alternative or supplementary cementing materials used in the
replacement of ordinary Portland cement in civil engineering works. In the overall assessment of the present
review work has left the environment free of the hazards of CO and CO2 emissions. It was shown
that these supplementary cementing materials derived from solid wastes improve the engineering properties
of treated soft clay and expansive soils, concrete, and asphalt. Bio-peels, another form solid waste has
been established as a good detoxificant used in treating wastewater. It has been shown that solid waste
recycling and reuse is a hub to achieving ecofriendly, ecoefficient and sustainable infrastructural development
on the global scale.

Chemical stabilization involves the use of chemical agents for initiating reactions within the soil for modification of its geotechnical properties. Cement and lime stabilization have been the most common stabilization methods adopted for soil treatment. Cement stabilization results in good compressive strengths and is preferred for cohesionless to moderately cohesive soil but loses effectiveness when the soil is highly plastic. Lime stabilization is the most preferred method for plastic clays; however, it proves to be ineffective in sulphate rich clays and performs poorly under extreme conditions. With such drawbacks, lots of researches have been undertaken to address the issues faced with each stabilization method, in particular, the use of solid wastes for soil stabilization. Solid waste reuse has gained high momentum for achieving sustainable waste management in recent times. Research has shown that the use of solid wastes as additives with and replacement for conventional stabilizers has resulted in better results than the performance of either individually. This review provides insight into some of the works done by earlier researchers on lime/cement stabilization with industrial wastes as additives and helps to form a sound platform for further research on industrial wastes as additives to conventional stabilizers.

- by Jijo James
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- Soil Stabilization, Soil stabilisation, Industrial wastes, Solid wastes management
- by K Chetan
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- Engineering, Civil Engineering, Soil stabilisation

The study involved investigating the performance of ordinary Portland cement (OPC) stabilized soil blocks amended with sugarcane bagasse ash (SBA). Locally available soil was tested for its properties and characterized as clay of medium plasticity. This soil was stabilized using 4% and 10% OPC for manufacture of blocks of size 19 cm × 9 cm × 9 cm. The blocks were admixed with 4%, 6%, and 8% SBA by weight of dry soil during casting, with plain OPC stabilized blocks acting as control. All blocks were cast to one target density and water content followed by moist curing for a period of 28 days. They were then subjected to compressive strength, water absorption, and efflorescence tests in accordance with Bureau of Indian standards (BIS) specifications. The results of the tests indicated that OPC stabilization resulted in blocks that met the specifications of BIS. Addition of SBA increased the compressive strength of the blocks and slightly increased the water absorption but still met the standard requirement of BIS code. It is concluded that addition of SBA to OPC in stabilized block manufacture was capable of producing stabilized blocks at reduced OPC content that met the minimum required standards.

- by Jijo James and +1
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- Soil Stabilization, Bricks, Soil stabilisation, Soil-cement Blocks

The present study focuses on the impacts of conventional ground improvement techniques on the environment, supporting the argument with documental evidence and alternatives to these techniques. The study aims at testing the effectiveness... more

- by Jijo James and +1
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- Soil Stabilization, Soil stabilisation

This article presents the result of laboratory study conducted on expansive soil specimens
treated with lignin, rice husk powder (RHP) and rice husk ash (RHA). The amount of lignin produced from
paper industry and RHP were varied from 0 to 20% and RHA from 0 to 10% by weight. The treated
specimens were subjected to unconfined compressive strength (UCS),swelling test and Atterberg limit tests.
The effect of additives on UCS and atterberg limit test results were reported. It was observed that the
additives and curing duration had a significant effect on the strength value of treated specimens. Generally
(except the sample treated with 20% RHP for 3-day) with increasing additive and curing duration the UCS
value increases. A RHP content of 15% was found to be the optimum with regard to 3-day cure UCS.

- by Dr. FATİH ÇELİK
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- Soil Stabilization, Lignin, Utilization of Rice Husk, Soil stabilisation

The focus of the paper is to evaluate the effectiveness of using class F flyash as pozzolana
to enhance lime treatment of soil particularly when mixture posses large fraction of ash. A mixture
containing 25% of flyash by weight of dry soil was considered as base mixture which was subsequently
increased upto 45%. To achieve this objective, a battery of tests was conducted on soil –flyash mixtures
prepared with lime as activator. Test specimens were subjected to compaction tests, unconfined
compression test, split tensile tests. Durability characteristics based on mass loss and unconfined
compressive strength criteria of stabilized soil were also studied using wet-dry tests. Effect of curing
time on stabilized soil was studied by curing the specimens for 7, 14, 28, 56, 90 and 180 days before
conducting the tests. Soaked CBR tests were also conducted for those mixes only which retains maximum
unconfined compressive strength after 12 cycles of wetting and drying. The results show that addition
of high fraction class F flyash not only enhances the strength but also improves the durability of lime
stabilized soil.

- by jagadanand jha
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- Soil stabilisation

Traditional engineering practices and materials adopted by ancient civilizations have been successful in their engineering performance. In this study, a traditional combination of materials viz. Lime, Jaggery and Gall nut (Terminalia... more

- by Dr. S. VIDHYA LAKSHMI and +1
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- Soil Stabilization, Soil stabilisation

In the southern U.S. states, expansive soils are frequently encountered, presenting an important hazard in geotechnical engineering. This research relies on mineralogical and geochemical clues to explain the swelling behavior of smectite-rich, high-plasticity soils, documented in a series of geomechanical swelling tests that were performed on the soils stabilized with the metakaolin (MKG) and fly ash (FAG) based geopolymers. These geopolymers were mixed with the soil at several concentration levels. The lowest swelling percentage was shown to correspond to the sample stabilized with 12% FAG and was attributed to the neoformation of calcium silicate hydrates that acted as a cementitious material, preventing the soil from expanding by occupying the pore space, thus binding the clay particles together. Conversely, the 12% MKG-stabilized soil exhibited enormous expansion, which was explained by montmorillonite swelling to the point that it gradually began to lose its structural periodicity. The relatively high abundance of the newly formed feldspathoids in MKG-treated samples is believed to have greatly contributed to the overall soil expansion. Finally, the cation exchange capacity tests showed that the percentage of Na+ and Ca2+, as well as the pH value, exercised strong control on the swelling behavior of smectitic clays.

- by Mahmoud A. Mahrous and +1
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- Soil stabilisation, Fly Ash Soil Stabilsisation, STABILIZATION OF EXPANSIVE SOILS, Metakaolin based geopolymer

The influence of Renolith, a polymer-based product composed of latex with cellulose and available in liquid form, on cement-stabilized lateritic soils was
investigated to find out any improvement in the strength of the soils. The assessment was carried out on materials from four different borrow pits. After
classification of the soils, the unsuitable ones were established in the fourth borrow pit and subjected to stabilization. The ensuing results showed an array of
remarkable improvements over each percentage at which cement was kept constant (i.e. at 5% and 10% of the dry weight of soil), and Renolith varied (i.e. at
2.5%, 5%, 7.5%, and 10% of the weight of cement respectively). There was a consistent peak of strength observed at the value of Renolith at 5% of the weight of
cement used; though the stronger result was arrived at with higher percentage of cement (at 10% of the dry weight of soil). However, the poorest of the stabilized
samples displayed interesting results from the tests in that it’s strength indices increased by 7% in Maximum Dry Density; 1,863% in Unsoaked California Bearing
Ratio and 200% in Unconfined Compressive Strength after 28 days.

Black Cotton soil is expansive soil which expands when it contacts with water. This is the major reason of failure of black cotton soil strata. Different areas having different types of black cotton soil and it is engineering properties. These properties may be improved by adding or mixing the different types of admixture or fibre or stabilizing materials. Most of the times, the black cotton soil is stabilized by synthetic fibres and natural fibres. The polypropylene, polyester are synthetic and jute is natural fibre. This research paper deals with behaviour of black cotton soil with different percentage of black cotton soil. In this research, the Kota stone slurry is mixed from 5% to 30% in black cotton soil. The engineering parameters are also determined by conducting tests. For studying the behaviour of black cotton soil with different percentage of Kota stone slurry, the Atterberg's limits (Liquid Limit, Plastic Limit, Plasticity Index), standard proctor test, differential free swelling index, swelling pressure and wet sieve analysis tests are conducted.

- by Kasinatha Pandian
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- Civil Engineering, Soil Stabilization, Soil stabilisation, Industrial wastes

An excerpt on fly-ash usage for soil stabilization.

- by Abhishek Savarnya
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- Soil stabilisation, Subgrade Stabilisation, Flyash Utilization
- by Hanifi CANAKCI
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- Civil Engineering, Chemistry, Soil Stabilization, Lignin

Abstract: The present study deals with the effect of additives on the early strength gain of soil stabilized with conventional stabilizers like lime and cement. The development of UCC strength of stabilized soil admixed with industrial wastes over a curing period of 2 hours, 3 days and 7 days was studied. The industrial wastes used in the present work were ceramic dust and press mud obtained from pulverization of ceramic tiles from construction debris and sugar industry respectively. Ceramic dust was used as admixture for cement stabilization and press mud was used as admixture for lime stabilization of soil. The results of the study indicated that addition of press mud resulted in increase in early strength when sufficient quantity of lime was available for reaction. The addition of ceramic dust resulted in enhanced early strength in case of cement stabilization for all combinations studied but the maximum strength gain was achieved for a specific percentage of cement and ceramic dust which can be considered as the optimum dosage for the soil used in the study. The results of the study strengthen the fact established by earlier studies that industrial wastes can be effectively used for soil stabilization purposes as additives to conventional stabilizers.
Keywords: Cement Stabilization, Lime Stabilization, Press Mud, Ceramic Dust, Early strength.

- by Jijo James and +1
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- Industrial waste management, Expansive Soils, Soil Stabilization, Soil stabilisation

Road recycling and soil stabilisation contractor based in Australia - Transport and Main Roads (TMR) for pavements built on lime stabilised ... Subgrade stabilisation can be defined as a means of enhancing soil strength. Soil stabiliser and pavement binder. Blended into pavement on application to road and yard areas. Surface rolling surface coating.

- by Susan Diaz
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- Soil Science, Recycling, Water and wastewater treatment, Wastewater Treatment

According to IRC recommendation, the California bearing ratio (CBR) value of subgrade is used for design of flexible pavements. The design of pavement may affect by the material which is used as pavement material. Black Cotton soil is expansive soil which expand when it contacts with water and this is the major reason of failure of black cotton soil strata. The engineering properties of black cotton soil may be used by fibre, ash, lime and sludge etc. CBR value depends on the liquid limit (Wl), Plastic limit (Wp), plasticity index (Ip), maximum dry density, optimum moisture content, swelling pressure, degree of expansiveness and permeability of soil or mix specimen. These tests are performed in laboratory. This research paper deals with design of flexible pavement by using black cotton soil with different percentage of sugarcane bagasse ash. In this research, the sugarcane bagasse ash is mixed from 2.5% to 12.5% in black cotton soil. The engineering parameters are also determined by performed tests. For studying the behaviour of black cotton soil with different percentage of sugarcane bagasse ash, the Atterberg's limits (Liquid Limit, Plastic Limit, Plasticity Index), standard proctor test, California Bearing Ratio are performed.

—This paper represents the results of experimental work to investigate the suitability of a waste material (WM) for soft soil stabilisation. In addition, the effect of particle size distribution (PSD) of the waste material on its performance as a soil stabiliser was investigated. The WM used in this study is produced from the incineration processes in domestic energy power plant and it is available in two different grades of fineness (coarse waste material (CWM) and fine waste material (FWM)). An intermediate plasticity silty clayey soil with medium organic matter content has been used in this study. The suitability of the CWM and FWM to improve the physical and engineering properties of the selected soil was evaluated dependant on the results obtained from the consistency limits, compaction characteristics (optimum moisture content (OMC) and maximum dry density (MDD)); along with the unconfined compressive strength test (UCS). Different percentages of CWM were added to the soft soil (3, 6, 9, 12 and 15%) to produce various admixtures. Then the UCS test was carried out on specimens under different curing periods (zero, 7, 14, and 28 days) to find the optimum percentage of CWM. The optimum and other two percentages (either side of the optimum content) were used for FWM to evaluate the effect of the fineness of the WM on UCS of the stabilised soil. Results indicated that both types of the WM used in this study improved the physical properties of the soft soil where the index of plasticity (IP) was decreased significantly. IP was decreased from 21 to 13.64 and 13.10 with 12% of CWM and 15% of FWM respectively. The results of the unconfined compressive strength test indicated that 12% of CWM was the optimum and this percentage developed the UCS value from 202kPa to 500kPa for 28 days cured samples, which is equal, approximately 2.5 times the UCS value for untreated soil. Moreover, this percentage provided 1.4 times the value of UCS for stabilized soil-CWA by using FWM which recorded just under 700kPa after 28 days curing.

In the world, various types of soils are available and found. The soil may be majorly classified in two groups as cohesive soil and cohesionless soil. The classification of soil may be executed as per particle size distribution and consistency limits. The expansive soil having expansion and shrinkage properties which is major issue for geotechnical engineers. Due to swell and shrink properties, the expansive soils change their volume. The black cotton soil is good example of expansive soils. In other hand, million tons of waste material is producing by industries in a year. This is also major issue that “How to utilize industrial waste materials”. These materials are Kota stone slurry, fly ash, marble dust, brick dust, marble slurry etc. In this research paper, reviews are made on discussion and conclusions of experimental study of utilization of industrial waste material to stabilize black cotton soil (BCS). The BCS is stabilized by Kota stone slurry at 5% variation from 5% to 30%, pond ash (from Kota Thermal Power Station) at 10% variation from 10% to 50%, sugarcane bagasse ash at 2.5% variation from 2.5% to 12.5%. The Atterberg’s limit, proctor test, free swell index and CBR test were performed to study the behavior of soil. From test results, it is observed that California bearing value (CBR) is directly proportional to percentage of industrial waste materials

California bearing ratio (CBR) value of subgrade is used for design of flexible pavements. The design of pavement may affect by the material which is used as pavement material. Most of the expansive soils need stabilizations because expansive soils swell when it comes in contact with water and this is the major reason of failure of expansive soil strata. In this research, the black cotton soil is used with 15% Kota stone slurry and fibre is mixed at varied percentage. The engineering properties of black cotton soil may be improved by using fibre, ash, lime and sludge etc. CBR value depends on the liquid limit (Wl), Plastic limit (Wp), plasticity index (Ip), maximum dry density, optimum moisture content, shrinkage, swelling pressure, degree of expansiveness and permeability of soil or mix specimen. These tests are performed in laboratory of University Teaching Department, Rajasthan Technical University, Kota. This research paper deals with design of flexible pavement by using black cotton soil with different percentage of Recron 3s fibre with 15% Kota stone slurry. In this research, the Recron 3s fibre is mixed from 0.5% to 2.5% in black cotton soil with 15% Kota stone slurry mix. The engineering parameters are also determined by performed tests. For studying the behaviour of black cotton soil with different percentage of Kota stone slurry for pavement, the Atterberg's limits (Liquid Limit, Plastic Limit, Plasticity Index), Sieve analysis, standard proctor test, California Bearing Ratio are performed.

The use of phosphogypsum as an additive to lime, to enhance its performance in soil stabilization, is analyzed in this paper. Phosphogypsum is a by-product of the phosphate rock processing during production of phosphoric acid. Expansive soil samples used in this paper were stabilized using three different lime proportions: initial lime consumption, optimum lime content, and less than initial lime consumption. The results reveal that the addition of phosphogypsum to lime led to improvement of both the early and late strength of stabilized soil.

The effect of addition of Micro Ceramic Dust (MCD) on the Plasticity and Swell Index of Lime stabilized expansive soil has been discussed in this paper. Lime stabilization is the most commonly used technique for improving expansive soils. Initial Consumption of Lime (ICL) was determined using Eades and Grim pH test. Two lime contents, one below and one above this lime content were adopted for stabilizing the soil. MCD was used as an admixture to lime stabilization of soil in varying quantities following which the soil was tested for its Atterberg limits and free swell index. The results indicated that addition of MCD to lime stabilization better improved the
plasticity and swell characteristics.

- by Jijo James and +1
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- Soil Stabilization, Soil stabilisation, Industrial / Municipal /Construction Waste Recycling, Lime Stabilization
- by hassnen jafer
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- Soil stabilisation

The stabilization of problematic soils with chemical additives has become popular globally. Others studied the use of the magnesium chloride (MgCl2) for improving weak soil properties, but the MgCl2 mixed with the alkaline solution as a chemical additive have not been investigated. This paper studied the factors that contribute to the strength development of silty sand, a typical subgrade soil in Kamloops BC, Canada, using the MgCl2 with different ratios of alkalinization solution (Na2SiO3/NaOH). The total of 65 samples included the untreated sample were examined using standard compaction and the unconfined compressive strength (UCS) tests under a curing period of 7, 14, 28, and 60 days. Results revealed that the chemical additive was improving the density and the compressive strength of the silty sand. This increase in strength was subjected to the formation of the new cementitious product, which was the combination of the chemical additive that filled up voids and reinforces the particles in the soil.

- by Nurmunira Muhammad
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- Soil Stabilization, Soil stabilisation

Ecofriendly, ecoefficient and sustainable civil engineering work has been research with emphasis on adapting the byproducts of solid waste recycling and reuse to achieving infrastructural activities with low or zero carbon emission. The direction combustion model, the solid waste incinerator caustic soda oxides of carbon entrapment model (SWI-NaOH-OCEM) developed by this research has achieved a zero carbon release. This research adopted the literature search method to put together research results of previous works relevant to the aim of this present work. It has been shown that CO and CO2 emissions can be contained during the derivation of alternative or supplementary cementing materials used in the replacement of ordinary Portland cement in civil engineering works. In the overall assessment of the present review work has left the environment free of the hazards of CO and CO2 emissions. It was shown that these supplementary cementing materials derived from solid wastes improve the ...

The title of this study is "Compression Strength Testing Model on Clay Soil Stabilization Using Variations of Cement Composition". The focus of this test is the addition of different compositions of cement and clay. Composition of this test is 100% soil + 0% cement, 70% soil + 30% cement, 50% soil + 50% cement and 30% soil + 70% cement. The next stage of drying is done for 0 days, 5 days, 10 days, 15 days and 20 days. The test is performed by unconfined compression test machine for each sample dried within the time specified above. The cement used is Portland composite cement type (Portlant Cement Composite / PCC). The conclusion is obtained from the results of tests that have been done that the soil composition of 100% + 0% cement land indicates if the longer drained the value of the compressive strength will decrease. However, in the other composition 70% of soil + 30% cement, 50% soil + 50% cement and 30% soil + 70% cement shows that the longer drying is done for each composition the relationship between strain and stress shows an increase along with the duration of drying done. However, if analyzed for the largest compressive strength value of this test was found in the 50% + 50% cement sample showing the largest compressive strength (q u) compared with the other samples.

- by Wenryadi Wira Prasetia
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- Soil stabilisation

- by Omar R Harvey
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- Soil Stabilization, Soil stabilisation, Chemical Soil stabilization, Ettringite

Ecofriendly, ecoefficient and sustainable civil engineering work has been research with emphasis on adapting the byproducts of solid waste recycling and reuse to achieving infrastructural activities with low or zero carbon emission. The direction combustion model, the solid waste incinerator caustic soda oxides of carbon entrapment model (SWI-NaOH-OCEM) developed by this research has achieved a zero carbon release. This research adopted the literature search method to put together research results of previous works relevant to the aim of this present work. It has been shown that CO and CO2 emissions can be contained during the derivation of alternative or supplementary cementing materials used in the replacement of ordinary Portland cement in civil engineering works. In the overall assessment of the present review work has left the environment free of the hazards of CO and CO2 emissions. It was shown that these supplementary cementing materials derived from solid wastes improve the ...

- by Kasinatha Pandian
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- Engineering, Soil Stabilization, Bricks, Soil stabilisation

Stabilization of poor soils subjected to large daily temperature variations requires careful selection of suitable stabilizer for improvement of such soils. This study investigated the freeze-thaw resistance of an alluvial soil stabilized with EcoSand and asbestos-free fiber powder (AFP). Physical and mechanical properties of the soil were determined. The soil sample was stabilized with 5 variants of equal mixtures of the EcoSand and AFP in proportions of 2, 4, 6, 8 and 10%, with 1% sodium silicate and 1% fly ash, by weight of the soil. UCS tests were conducted before and after three freeze-thaw cycles, while keeping the sample at 0ºC for 8 hours and later at 30ºC for 8 hours for each cycle. It was found that the 8% EcoSand + AFP with 1% sodium silicate and 1% fly ash content provided an optimized increase of the freeze-thaw resistance of the soil. The use of a mixture of EcoSand and AFP as a soil stabilizer for regions of the world experiencing large temperature variation has the potential to improve the resistance of sand to freezing and thawing.

- by Ravindran Gobinath
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- Soil Mechanics, Soil stabilisation

- by Manikanda Venkatesh
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- Engineering, Materials Science, Soil Stabilization, Bricks
- by Hassnen Jafer
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- Materials Science, Soil stabilisation, Lime

According to IRC recommendation, the California bearing ratio (CBR) value of subgrade is used for design of flexible pavements. The design of pavement may affect by the material which is used as pavement material. Black Cotton soil is expansive soil which expand when it contacts with water and this is the major reason of failure of black cotton soil strata. The engineering properties of black cotton soil may be used by fibre, ash, lime and sludge etc. CBR value depends on the liquid limit (Wl), Plastic limit (Wp), plasticity index (Ip), maximum dry density, optimum moisture content, swelling pressure, degree of expansiveness and permeability of soil or mix specimen. These tests are performed in laboratory. This research paper deals with design of flexible pavement by using black cotton soil with 20% sugarcane bagasse ash (SCBA) and different percentage of Coir Fibre. In this research, the fibre (Aspect ratio 80) is mixed from 0.25% to 1.25% in mix of black cotton soil + 20% SCBA. The engineering parameters are also determined by performed tests. For studying the behaviour of black cotton soil with different percentage of sugarcane bagasse ash, the Atterberg's limits (Liquid Limit, Plastic Limit, Plasticity Index), standard proctor test, California Bearing Ratio are performed