Browsing by Author "Chitrachedu, R.K."

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Experimental Studies on the Suitability of Coconut Shell as a Filler Material in Concrete Cubes
(Springer Science and Business Media Deutschland GmbH info@springer-sbm.com, 2021) Gadekari, R.S.; Kolathayar, S.; Chitrachedu, R.K.
Globally, the consumption of concrete is raising high. The production of cement raises the carbon footprint and causes depletion of non-renewable resources. Researchers are formulating new technologies to save the resources, energy for the next generations, to reduce disposal problems and to make the product or structure economical. For this purpose, recycled waste and treated natural materials, etc., are used as a substitute for cement, aggregates, or reinforcement. This paper presents studies conducted to analyze the performance of a coconut shell as a filler. The material used in the present study was naturally available, cost-free, and non-toxic material. The strength performance of different concrete cube specimens with coconut shells in their different orientations was assessed by conducting compressive strength tests. From the results, the effective position and orientation of the shell in the concrete cube were found out. Â© 2021, Springer Nature Singapore Pte Ltd.
Model Footing Tests on Sand Bed to Evaluate Efficiency of Tire Crumb as Infill Materials in Geocells
(Springer Science and Business Media Deutschland GmbH, 2022) Kolathayar, S.; Chitrachedu, R.K.
This paper presents the results of model footing tests on sand bed reinforced with HDPE and coir geocells. The infill material influences the performance of geocells. The potential of sand tire crumb (STC) mixture as infill material is evaluated in the study in comparison with pure sand as infill materials. To select the appropriate blend of sand and tire crumb, the shear properties and density properties were analyzed by performing direct shear and density tests. The mix which has shown the highest shear strength and density properties has been selected, and plate load tests were carried to analyze the mechanism and effectiveness of tire crumb as infill material in geocell pockets. From the results, it is clear that the sand tire crumb mix is effective as infill materials, especially for coir geocells. The surface heave was found to reduce significantly with sand tire crumb mix as infill material. Â© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
Performance Evaluation of Coir Geocells as Soil Retention System Under Dry and Wet Conditions
(Springer Science and Business Media Deutschland GmbH info@springer-sbm.com, 2020) Chitrachedu, R.K.; Kolathayar, S.
In the present study, coir is used to fabricate geocells and to construct model retaining walls for application in sloppy regions to retain the soil. The performance of coir geocells under dry and wet conditions during rainfall were evaluated by conducting laboratory model tests. The study presents horizontal and vertical deformation against surcharge load for different scenarios of reinforcement using geocells. A comparison was made between the performance of unreinforced slope, high-density polyethylene geocell retaining wall and coir geocell retaining wall to evaluate the potential of coir geocell over synthetic geocell as reinforcement. The roughness and absence of perforations in coir material resisted the movement and failure of the wall for a longer span. The horizontal displacement was more for coir geocell retaining wall compared to wall made of high density polyethylene (HDPE) geocells. This may be due to the interlocking effect in coir HDPE geocell as perforations provide contact between the sand particles. The inexpensive and easily disposable coir can be effectively used as reinforcement in the construction of a retaining wall. © 2020, Springer Nature Switzerland AG.