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2019, IAEME
Expansive soil causing problems due to its swelling and shrinkage characteristics. Expansive soils are a worldwide problem that poses several challenges for civil Engineers. Various methods are adapted to improve the engineering characteristics of expansive. Literature is available on adding and mixing the fiber into the soil as this technique has been incorporated since ancient times. Cement created in the ignition of sub bituminous coals shows self-cementing characteristics and can be utilized as a part of an extensive variety of application. In this paper the main focused on increasing the Compressive strength and CBR value of the Black Cotton soil by varying the percentage of Polypropylene fibre in the range of 0.5%, 1.0%, 1.5%, and the Cement is varied as 2%, 4%, 6%, 8% 10%, 12% & 14% by weight of soil mass.
IAEME
IJCIET_10_02_131.pdf2019 •
Expansive soil causing problems due to its swelling and shrinkage characteristics. Expansive soils are a worldwide problem that poses several challenges for civil Engineers. Various methods are adapted to improve the engineering characteristics of expansive. Literature is available on adding and mixing the fiber into the soil as this technique has been incorporated since ancient times. Cement created in the ignition of sub bituminous coals shows self-cementing characteristics and can be utilized as a part of an extensive variety of application. In this paper the main focused on increasing the Compressive strength and CBR value of the Black Cotton soil by varying the percentage of Polypropylene fibre in the range of 0.5%, 1.0%, 1.5%, and the Cement is varied as 2%, 4%, 6%, 8% 10%, 12% & 14% by weight of soil mass.
Stabilization of soil using fibers is one of the effective techniques to improve the strength of soils and thereby increasing its load bearing capacity making it more appropriate in the manufacture of compressed stabilized earth blocks (CSEB). This paper aims to evaluate the strength of locally available laterite soil stabilized using available fiber as stabilizer, which is classified as clayey silt. The performance of Polyethylene Terephthalate (PET) bottle fibers and Polypropylene (PP) sack fibers are separately analyzed for its impact on the unconfined compressive strength of the soil. Tests were conducted on various fiber-soil ratios in four percentage levels such as 0, 0.10, 0.15 and 0.2 to determine the optimum fiber content. The experimental analysis suggests that laterite soil stabilized with optimum PP (sack) fiber content provides better performance than the laterite soil stabilized with optimum PET (bottle) fiber content. The results indicate that, the Polypropylene sack fibers are more optimal and efficient stabilizer for the laterite soil and were selected as the constituent for developing CSEBs. This study also contributes to effective soil waste management as a befitting sustainable technique to solve current environmental crisis as well.
This paper describes the compaction and strength behaviour of fly ash treated black cotton soil (BC soil) reinforced with bamboo fibers. The optimum percentage of fly ash was found to be 20% by weight of soil. Bamboo fiber of average diameter 0.45 mm and 25 mm length is used in this study. It was randomly included into the fly ash treated soil at four different percentages of fiber content, i.e. 0.25, 0.5, 0.75 and 1% (by weight). The reinforced soil samples were subjected to unconfined compression test and compaction tests. It is found that strength properties of optimum combination of BC soil-fly ash specimens reinforced with bamboo fibers is appreciably better than untreated BC soil. An optimum fiber content of 1% (by weight) is recommended for strengthening flyash treated BC soil.
Black cotton soils or expansive soils which are vastly found in India are known for their susceptibility to varying moisture condition. This causes severe problem for pavement construction in areas where black cotton soils are predominantly present. To cope up with this problem in many sites, soil replacement technique is adapted which is very costly. In present investigation a study area from Samalkot to Uppada in Andhra Pradesh, India is selected having similar problem. Experiments are carried out to stabilize the soil with Vitrified Polish Waste (VPW) as an admixture and geogrid provision. The VPW is mixed in proportions of 5%, 10%, 15%, 20% to virgin soil and the engineering and index properties of soil are evaluated after stabilization. The subgrade soil is also tested for simulated traffic loading condition by providing geogrid membrane in the laboratory and result analysis proved that VPW has a good potential to be used as an additive for black cotton soil stabilization
Soil reinforcement technique is one of the most popular techniques used for improvement of poor soils. Metal strips, synthetic geotextiles, geogrid sheets, natural geotextiles, randomly distributed, synthetic and natural fibres are being used as reinforcing materials to soil. Further, the soil reinforcement causes significant improvement in tensile strength, shear strength, other properties, bearing capacity as well as economy. Use of natural fibre in civil engineering for improving soil properties is advantageous because they are cheap, locally available, biodegradable and environmental friendly. India has large tracks resting on expansive soil covering an area of 0.8million square meters which is about 20% of total area of India .These expansive soils undergo causes volumetric changes with change in moisture contents, swelling and shrinkage of these soil causes severe damage to the foundations, buildings, roads, retaining structures etc.In this project an attempt is made to study the influence of jute fibre reinforcement on cbr properties of expansive soil with increasing percentages 1%, 2% &3%.
IAEME
IJCIET_10_01_170.pdf2019 •
Because of the excellent strength of concrete reinforced with fibers pulled in the consideration of researchers throughout the most recent decades. The proposed technique manages the experimental investigation to determine the properties of Ternary Blended Fiber Reinforced Concrete (TBFRC) with the assistance of soft computing methodology performed in MATLAB software. In the present experimental examination a mix design of M50 is tried at utilizing ternary blend of Ground Granulated Blast Furnace Slag (GGBS), Fly Ash (FA) and Metakaolin (MK) as partial replacement by weight of concrete at different mixing rates running between 0% – 30% with extra steel and polypropylene fibers. Here, the mechanical properties, for example, compressive strength, split tensile strength, and flexural strength, are anticipated by utilizing Deep Learning Neural Network (DNN) strategy with various fiber rate. The input factors for the neural network depict the materials and different mix extents of concrete. In this network structure, the weights are enhanced by utilizing Adaptive Crow Search Algorithm (ACSA). Additionally by utilizing this system of ternary blended fiber reinforced concrete is delivered at a sensible cost than that of traditional concrete. In addition, the Optimal DNN predicted the mechanical properties optimally for all curing days (28, 56, and 90 days) compared with experimental and existing strategies (ANN).
2019 •
This research aims to investigate; strength characteristics of artificial granular material for soft soil cement stabilization, design parameters of artificial granular column elements encased geogrid, and bearing capacity of artificial granular column soft soil reinforcement models. Artificial granular material consisting of triangular prisms, cubes and hexagon prisms of the same volume, made from cement stabilized soft soil using the trial mix method to represent strength equivalent design criteria of road sub-base layer. Artificial granular column elements test and soft soil reinforcement models test with geogrid-made granular column systems were carried out in each shape variation. Based on design criteria CBR value=20% for road sub-base layer, then cement stabilization is set at 12.5% which corresponded to the value of qu=400 kN/m 2 with cement water ratio w/c of 1.9. Sub-grade modulus column elements in various granular forms E=1.58-2.67 kN/m 2 with poisson =0.29-0.33, granular hexagon prism shows higher capacity performance and design parameters. Soft soil reinforcement model with artificial granular columns-geogrid is significance improving bearing capacity of soft soil foundation systems with an increase ratio of 28.5-33; the granular hexagon prism shows capacity performance and design parameters higher than other granular types.
Dark cotton garden soil is usually accumulated near KSRM college or university regarding KADAPA is usually stabilized along with arbitrarily sent out Polypropylene fibers' in addition to Nonwoven geo-textile along with unique u/d rate in addition to yellow sand content material regarding 5, 10 in addition to 15 per cent through excess weight. The actual CBR testing have been carried out inside the laboratory work for unique combination size regarding fibers in addition to geo-textile along with dark-colored silk cotton garden soil. Substantial enhancement can be found in this CBR benefit regarding dark-colored silk cotton garden soil.
Stabilization of soil can be done in number of ways like cement stabilization, chemical stabilization, etc. Generally, modification of the soil properties can be done by blending it with different materials such as lime, cement and fly powder or by reinforcing the soil. Real challenge in front of civil engineers is to lay the substructure over poor soil like clay. Stabilization of the soil is one of the conventional and most preferable ways to improve the properties of the kind of soil. Shear strengths of the stabilized soil with different fiber combinations is determined by conducting series of Unconfined Compression (UCC) tests. California Bearing Ratio (CBR) tests are also conducted on stabilized soil to determine the suitability of the best fibre reinforcement. The natural fibers used as reinforcement are coconut coir fibre and Rice husk powder whereas the synthetic fibers used as reinforcement are nylon fiber and glass fiber. The results obtained are compared and inferences are drawn towards the usability and effectiveness of best fiber reinforcement which improves the strength of the soil. In the present study, clay soil is satisfied using combination of natural and synthetic fibers. Studies have already been carried out by many researches to stabilize clay using natural or synthetic fibers. Here the best combination of fiber is found to effectively stabilize the soil.
The construction of road in for the engineers without any potential, thus the strength of the soil is relatively soil in terms of strength can b stabilization is to utilize locally available industrial wastes to improve the properties of soils. This method plays the problematic disposal of such wastes the benefits of fly ash, aggregate properties of clayey soil as a without any damage. The compaction characteristics capacity (CBR) of the soil treated with additives stabilization of clayey soil powder and lime can be used advantageously subgrade of the roadway pavement. The construction of road in clayey soil has continuously been a challenging task for the engineers without any failure. The clayey soil has high shrinkage and swelling the strength of the soil is relatively low. Improving the properties of soil in terms of strength can be done by stabilizing the soil. A recent stabilization is to utilize locally available industrial wastes to improve the properties plays a vitalroleto increase the strength of soil and al of such wastes with additives. The present study investigates ash, aggregate dust, marble powder and lime soil as a subgrade material to increase the life of the pavement The objective of this work is to find out the variation of compaction characteristics, unconfined compressive strength and California bearing of the soil treated with additives. The test results shows that the of clayey soil with optimum percentage of fly ash, aggregate dust, marble can be used advantageously as cost effective mix for construction of subgrade of the roadway pavement.
International Journal of Civil Engineering and Technology (IJCIET)
SPLITTING TENSILE STRENGTH ASSESSMENT OF LIGHTWEIGHT FOAMED CONCRETE REINFORCED WITH WASTE TYRE STEEL FIBRES2018 •
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IAEME
PAST INVESTIGATIONS ON MECHANICAL AND DURABILITY PROPERTIES OF HYBRID FIBER REINFORCED CONCRETE2019 •
2018 •
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