Effect of Fly Ash and Polypropylene on the Engineering Properties of Black Cotton Soil

Expansive Black cotton clay soils are widely distributed worldwide, and are a significant damage to infrastructure and buildigs.It is a common practice around the world to stabilize black cotton soil using fly ash to improve the strength of stabilized sub- base and sub grade soil. Soil stabilization is the improvement of strength or bearing capacity of soil by controlled compaction, proportioning or addition of suitable admixtures or stabilizers. The Black cotton soils are extremely hard when dry, but lose its strength fully when in wet condition. In monsoon they guzzle water and swell and in summer they shrink on evaporation of water from there. Because of its high Swelling and shrinkage characteristics the black cotton soils has been a challenge to the highway engineers.So in this research paper fly ash has been used to improve the various strength properties of natural black cotton soil.The objective of this research paper is to improve the engineering properties of black cotton soil by adding different percentage of fly ash by the weight of soil and make it suitable for construction. A series of standard Proctor tests (for calculation of MDD and OMC) and California Bearing Ratio (C.B.R) tests are conducted on both raw Black cotton soil and mixed soil with different percentages of fly ash (5%, 10%, 20%, 30%) by weight. A comparison between properties of raw black cotton soil, black cotton soil mixed with fly ash are performed .It is found that the properties of black cotton soil mixed with fly ash are suitably enhanced.

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Study on Soil Stabilization by Using Fly Ash and Ground Granulated Blast Furnace Slag (GGBS)

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.37793 ◽

2021 ◽

Vol 9 (8) ◽

pp. 2506-2512

Author(s):

Pratiksha R. Patil

Keyword(s):

Blast Furnace ◽

Fly Ash ◽

Blast Furnace Slag ◽

Soil Stabilization ◽

Engineering Properties ◽

Black Cotton Soil ◽

Soil Test ◽

Granulated Blast Furnace Slag ◽

Strength And Durability ◽

Furnace Slag

Abstract: Soil stabilization has become the more issue in construction activity. In this study we focus on improvement of soil by using Fly ash and ground granulated blast furnace slag (GGBS). In many villages there was demolition of houses due to flood situation and landslide so stabilization of soil is very important factor in this area. In these studies we use local Fly ash and Ground granulated blast furnace slag (GGBS) for stabilization of soil. Soil are generally stabilized to increase their strength and durability or to prevent soil erosion. The properties of soil vary a great deal at different places or in certain cases even at one place the success of soil stabilization depends on soil testing. Various methods are there to stabilize soil and the method should be verified in the lab with the soil material before applying it on the field. The various percentages of Fly ash and GGBS were mixed with soil sample to conduct soil test. Using fly ash reduces the plasticity index which has potential impact on engineering properties also GGBS has cementations property which acts as binding material for the soil. On addition of 15% Fly ash and 5% GGBS increase the strength of soil (according to IS2720:1985) it’s recommended for better result. Keywords: Stabilization of soil, Fly ash, GGBS, Black cotton soil, Soil test.

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Strength, Physicochemical and Morphological Characteristics of Fly Ash Stabilized Black Cotton Soil

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b1743.078219 ◽

2019 ◽

Vol 8 (2) ◽

pp. 616-623

Keyword(s):

Fly Ash ◽

Research Work ◽

Morphological Characteristics ◽

Engineering Properties ◽

Black Cotton Soil ◽

Experimental Program ◽

Swelling Properties ◽

Curing Period ◽

Shrinkage And Swelling ◽

Alumino Silicate

Black Cotton (BC) soil is one of the problematic soil deposits in India. These soils are problematic due to their poor engineering properties and high shrinkage and swelling properties due to high affinity to water. This paper, explore stabilization of Black cotton soil having poor strength characteristic and high shrinkage and swelling characteristic, with Class F Fly Ash (FA) to verify its scope for use as soil sub-base construction material. Fly ash is a good soil stabilizing additive in alone or along with other additives. It improves the index and engineering properties of Black cotton soil as verified from previous research work. In this research work, a Laboratory experimental program was planned with Fly ash, variation from 0% to 50% and humid curing period varies from 0 to 28 days. In the first stage of the experiment, Atterberg’s limits and compaction test have performed on Black cotton soil with all mixture and found their respective Optimum Moisture Content (OMC) and Maximum Dry Densities (MDD). In the second stage of the experiment, UCS and CBR tests were carried out for immediate, 7, 14, 28 and 45 days curing periods. The Atterberg’s limits, OMC, MDD, UCS, and CBR of Fly ash stabilized Black cotton found much satisfactory at 20% FA and 28 days curing period. CBR and UCS value get increments of 77.91% and 83.45% respectively. From the physicochemical analysis through X-Ray Diffraction (XRD) and Scanning of Electron Microscope (SEM), it was noticed That enhancement of strength is due to the pozzolanic reaction which causes the formation of new crystalline mineral of Alumino-Silicate-Hydrates (ASH) and Calcium- Alumino-Silicate-Hydrates(CASH) in void space of the matrix

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Engineering Properties of Black cotton soil Modified with Fly ash and Cement

International Journal of Engineering Trends and Technology ◽

10.14445/22315381/ijett-v35p295 ◽

2016 ◽

Vol 35 (10) ◽

pp. 477-482 ◽

Cited By ~ 1

Author(s):

Jaya Prakash Babu.V ◽

◽

Satyanarayana P.V.V ◽

Surya Manikantha ◽

Abdul Moin

Keyword(s):

Fly Ash ◽

Engineering Properties ◽

Black Cotton Soil

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Evaluation of Cohesive Soil Mixed With Fly Ash and Reinforced With Nylon Fibre

IRA-International Journal of Technology & Engineering (ISSN 2455-4480) ◽

10.21013/jte.icsesd201719 ◽

2017 ◽

Vol 7 (2 (S)) ◽

pp. 193

Author(s):

Utkarsh Gawande ◽

Shubham Kanhake ◽

Arjun Lahane ◽

Prasanna Naghbhide

Keyword(s):

Compressive Strength ◽

Shear Strength ◽

Fly Ash ◽

Bearing Capacity ◽

Unconfined Compressive Strength ◽

Expansive Soil ◽

Engineering Properties ◽

Black Cotton Soil ◽

Nylon Fiber ◽

Properties Of Soil

Black cotton soil is a expansive soil. And mostly found in Vidarbha region of Maharashtra, this soil is highly unstable and it should be stabilize for carry out construction work. Materials like fly ash, rise husk, nylon fiber are used to make soil stable. Addition of such material will increase the physical, chemical and engineering properties of soil. Some of the properties which are improved are CBR value, shear strength, liquidity index, plasticity index, unconfined compressive strength (UCS) and bearing capacity, etc. The main objective of this study was to evaluate the effect of fly ash in stabilization of Black cotton soil. Mainly UCS and other properties of soil were calculated. The tests were conducted on Soil-Fly Ash mixtures, by increasing the Fly Ash percentage in Black cotton soil like 25%, 50%, 75%, and 100%, and then the soil was tested on Soil-Fly Ash - Fibre mixture by adding the fiber in increasing order like 0.5%, 1%, 1.5%. Results were obtained for mixed proportion of 75% soil and 25% fly ash which has unconfined compressive strength of 173 KN/m2. And by adding 1% of nylon fiber in same proportion of soil – fly ash the unconfined compressive strength increased to 243.12 KN/m2. Increase in UCS value can help in reducing the thickness of earthen roads and pavements and increase the bearing capacity and shear strength of soil. With analysis of results it was found that the fly ash along with nylon fiber has good potential to be used as an additive for improving engineering properties of expansive soil.

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