i-manager's Journal on Civil Engineering (JCE)


Volume 11 Issue 2 March - May 2021

Research Paper

Composition Characterization of Filter Material for Embankment Dams

Umer Salam * , M. Akbar Lone **
*-** Department of Civil Engineering, National Institute of Technology, Srinagar, India.
Salam, U., and Lone, M. A. (2021). Composition Characterization of Filter Material for Embankment Dams. i-manager's Journal on Civil Engineering, 11(2), 1-7. https://doi.org/10.26634/jce.11.2.18131

Abstract

In this study, an attempt has been made to compare the quality of different filter materials used for dam filters available in different districts of Kashmir Valley of Jammu and Kashmir, India. In order to access the cementation potential/quality of the filter materials the filter materials must undergo strict and accurate composition analysis to improve the filter performance. The amounts of chemical constituents like SiO2, Al2O3, Fe2O3, CaO, alkalies, and loss on ignition (LOI) were determined in accordance with standard procedures and specifications. The performance of filter materials for embankment dams dependent the characteristics like high silica content, low loss on ignition and ferric oxide of the filter material; therefore, the performance depends on the source of the material. The samples from Ganderbal were found to be the most feasible materials for dam filter application because of their high silica content, low loss on ignition and ferric oxide. Due to poor silica content, significant loss on ignition, and ferric oxide, the Budgam sample should be avoided. Thus, it is envisaged that this study will improve the understanding for the selection of more durable and reliable filter materials used in embankment dams in Kashmir valley of Jammu and Kashmir.

Research Paper

Numerical Simulation for Seismic Response of Soil-Foundation-Structure Interaction on Seismic Design of High-Rise RC Building

Aayush Kumar* , Shriram Chaurasia **
*-** Department of Civil Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, Uttar Pradesh, India.
Kumar, A., and Chaurasia, S. (2021). Numerical Simulation for Seismic Response of Soil-Foundation-Structure Interaction on Seismic Design of High-Rise RC Building. i-manager's Journal on Civil Engineering, 11(2), 8-22. https://doi.org/10.26634/jce.11.2.18040

Abstract

This paper attempts to present a simplistic approach for estimating the effects of soil-foundation-structure-interaction (SFSI) for high-rise buildings constructed over different foundation conditions, to simulate the dynamic response of buildings comparatively with the fixed base condition. In this paper, a nonlinear time history and response spectrum analysis has been carried out using computer code SAP2000 while considering the soil-foundation flexibility to examine the variation in spectral acceleration (SA), spectral displacement (SD), storey displacement, storey drift, base shear obtained according to the seismic regulation in the Indian standard code. Various foundations has been consistently compared and discussed with respect to fixed base founded structure to amplify effects on seismic performance of high-rise building. The study illustrates that the value of base shear and storey displacement is increased with a significant increase in stiffness of superstructure and soil flexibility. It additionally founded that the spectral displacement (SD) and spectral acceleration (SA) are a better trend in the flexible base model with an isolated foundation on medium soil, which offers us evidence that spectral responses of a structure are related to soil condition and foundation types. We can infer that SFSI is relevant for tall buildings resting on medium soil.

Research Paper

A Study on Reclaimed Asphalt Pavement (RAP) Mixes

Arunkumar D. S.* , Shakeeb Ahmed Sawar **, Archana M. R. ***, V. Anjaneyappa ****
*-**** Department of Civil Engineering, RV College of Engineering, Bengaluru, Karnataka, India.
Arunkumar, D. S., Sawar, S. A., Archana, M. R., and Anjaneyappa, V. (2021). A Study on Reclaimed Asphalt Pavement (RAP) Mixes. i-manager's Journal on Civil Engineering, 11(2), 23-31. https://doi.org/10.26634/jce.11.2.18255

Abstract

Reclaimed Asphalt Pavement (RAP) is a popular recycled material used in the construction of pavements. In contrast, incorporating RAP into asphalt mixtures is a complex process that involves a thorough understanding of all aspects of the mix design. The purpose of this review paper is to provide a comprehensive analysis of asphalt mixtures containing RAP. Based on this study and previous research papers, it is possible to conclude that using RAP is advantageous because RAP mixes can produce results that are equal to or even better than virgin mixes. The specifications and mix design followed the MORTH 5th revision for dense bituminous macadam grade II mix. The Marshall properties were obtained, which includes bulk density, flow stability, voids in mineral aggregates, and an air void filled with bitumen. RAP mixes have a positive effect on a number of parameters including Marshall Stability, Indirect tensile strength and rutting. This study provides information about RAP technology to the designers, engineers and researchers.

Research Paper

Studies on Cement Treated Granular Mixes using Various Recycled Aggregates

Shakeeb Ahmed Sawar* , Arunkumar D. S. **, Archana M. R.***, V. Anjaneyappa ****, Somanath M. Basutkar *****
*-***** Department of Civil Engineering, R V College of Engineering, Bengaluru, India.
Sawar, S. A., Arunkumar, D. S., Archana, M. R., Anjaneyappa, V., and Basutkar, S. M. (2021). Studies on Cement Treated Granular Mixes using Various Recycled Aggregates. i-manager's Journal on Civil Engineering, 11(2), 32-46. https://doi.org/10.26634/jce.11.2.18256

Abstract

In India, the scarcity of construction materials has been resulted from significant infrastructure development operations taking place in both rural and urban areas. The pavement industry is exploring ways to improve lower-quality recycled materials that are often used in road construction. The stabilization of these recycled materials with cement is considered to be one of the most common and widely used techniques to enhance mechanical properties. Reclaimed asphalt pavement (RAP), recycled concrete aggregates (RCA) and crushed brick (CB) aggregates are abundantly available recycled materials, and their use in road construction and maintenance is a sustainable and environmentally friendly process. In the current study, different proportions of various recycled materials (RAP, RCA, and recycled unbound aggregates) 0% to 100%, blended with different percentages of virgin aggregates were studied and the same mixes were stabilized with different cement contents varying from 0% to 10% for both base and sub-base layers has been investigated. Compaction characteristics and performance tests like unconfined compressive strength (UCS) of the same were investigated. Analysis has been performed on the collected UCS data of various recycled aggregates stabilized with different cement content.

Review Paper

State-of-Art Review – Buckling Prevented Thin-Walled Member

Kowsalya M.* , Iyappan G. R. **
*-** Department of Civil Engineering, SRM Valliammai Engineering College, Kattankulathur, Tamil Nadu, India.
Kowsalya, M., and Iyappan, G. R. (2021). State-of-Art Review – Buckling Prevented Thin-Walled Member. i-manager's Journal on Civil Engineering, 11(2), 47-57. https://doi.org/10.26634/jce.11.2.18207

Abstract

The use of thin-walled sections in the construction of residential and industrial buildings is very common. Thin-walled section elements are vulnerable to local buckling due to their slender nature. As a result, they will be unable to fulfil their minimum yielding capacity. Due to their high slenderness, mono-symmetric nature, eccentricity of shear centre, and low-torsional rigidity, they suffer from certain buckling modes due to their simple forming techniques and easy connectivity. Hence, it is necessary that these buckling modes are either delayed or eliminated to increase the ultimate capacity of thin-walled members. In multi-storey towers, where the Buckling Restrained Braces (BRBs) are thicker than the thin-walled portions, BRBs are widely used as lateral load resistant systems. The amount of strength required to prevent buckling of thin-walled parts would be less than that required by BRB. As a result, similar techniques cannot be employed due to the infill weight and tube sections involved. Therefore, a mechanism to avoid buckling must be created in order to enhance the efficiency and failure modes of such sections. The review comprises research that has been done to examine the consequences of buckling mode and its behaviour under various loading conditions. Buckling restraining the thin-walled part using Ultra- LightweightConcrete Composite (ULCC) can be used instead of BRBs.

Review Paper

Study on Flexural Performance of Novel Sandwich Panel with Porous Concrete Core

R. Sudhir Kumar* , J. Arunraj Christadoss **
*-** Department of Civil Engineering, SRM Valliammai Engineering College, Kattankulathur, Tamil Nadu, India.
Kumar, R. S., and Christadoss, J. A. (2021). Study on Flexural Performance of Novel Sandwich Panel with Porous Concrete Core. i-manager's Journal on Civil Engineering, 11(2), 58-69. https://doi.org/10.26634/jce.11.2.18100

Abstract

Sandwich panel system is a lightweight, energy efficient and economic construction technique for civil infrastructures. They consist of concrete wythes, lightweight core material and connectors. The objective of this paper is to present the past findings and highlight the current trends in research. In this paper, the types of sandwich panels, their constituents, design considerations, test methodology and their failure modes are reviewed along with the porous concrete properties and test methods. Based on this, a novel sandwich panel with an idea of porous concrete as a lightweight core material has been obtained and is discussed.