Journal Articles
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Item Empirical validation of dimensionality of quality of work life in India(Serials Publications scienti@sancharnet.in, 2016) Saha, S.; Kumar, S.P.Purpose - Quality of work life is a unique and distinctive construct that is highly valued in organizations. The purpose of this paper is to identify the dimensions of quality of work life from Indian perspective. Design/methodology/approach - Exploratory factor analysis was employed to identify the constituent dimensions suitable to measure quality of work life. Confirmatory factor analysis was then performed on these identified dimensions and their items to check validity, reliability and dimensionality and determine a factor structure. Findings - Results obtained suggested a three-dimensional conceptualization of quality of work life with twelve items. The dimensions identified are entitled as quality of work life with health and safety (QWLHS), family and pay (QWLFP) and knowledge (QWLK). Research limitations/implications - The findings can benefit managers at an operational level. They can make their employees work effectively with focus to improve every smallest aspect of work life. Originality/value - This paper is the first of its kind to conduct exploratory factor analysis followed by confirmatory factor analysis to identify a three-factor quality of work life conceptualization in Indian context.Item Mechanical properties of recycled aggregate concrete produced with Portland Pozzolana Cement(Techno Press technop2@chollian.net, 2016) Saha, S.; C, C.The quantity of construction and demolition waste has been greatly increasing recently. It causes many problems to the environment. For this reason, demolition waste management becomes inevitable in order to overcome the environmental issues. The present study aims to evaluate the effects of using recycled coarse aggregate, which is generated from construction and demolition waste, on the properties of recycled aggregate concrete. An experimental investigation on the strength characteristics of concrete made with recycled coarse aggregate is presented and discussed in this paper. In this study, Portland Pozzolana Cement (fly ash based) is used instead of ordinary Portland cement. The results of this investigation show the possibility of the use of recycled coarse aggregates in the production of fresh concrete. Use of demolition waste as coarse aggregate will lead to a cleaner environment with a significant reduction of the consumption of natural resources. A comparative study on the strength characteristics of recycled aggregate concrete made with Ordinary Portland Cement and Portland Pozzolana Cement is presented and discussed in this paper. © 2016 Techno-Press, Ltd.Item Impact of demographics on multiple commitments: Empirical evidence from Indian public sector undertakings(Associated Management Consultants Pvt. Ltd. editor@indianjournalofmarketing.com, 2016) Saha, S.; Kumar, S.Purpose: The purpose of this study was to determine the demographics that impact multiple commitments in Indian businesses. Design/Methodology/Approach: This research was conducted with the responses of 712 managerial employees working in Indian public sector undertakings. Findings: The results indicated that affective commitment is positively impacted by education. Continuance commitment is positively impacted by age, education, and tenure. Normative commitment is positively impacted by education and tenure. Group commitment is positively related to tenure. Job involvement is positively impacted by age and tenure. Implications: These findings are important for managers so that they can help build and improve different types of commitment of employees in organizations. Originality: This study is unique because it is the first of its kind in India to have investigated demographics for multiple commitments.Item Influence of participation in decision making on job satisfaction, group learning, and group commitment: Empirical study of public sector undertakings in India(Penerbit Universiti Sains Malaysia aamj@usm.my, 2017) Saha, S.; Kumar, S.This study assesses the impact of participation in decision making on job satisfaction, group commitment, and group learning. Data were collected from 397 managerial employees working in public sector undertakings across India. Structural equation modeling as a statistical technique and WarpPLS as a statistical tool was used to verify the proposed relationships. The findings of the study suggest that participation in decision making had a positive and significant relationship with job satisfaction. Further, participation in decision making had significant impact on group learning, but had no impact on group commitment. Job satisfaction had a positive and significant impact on group commitment. Group learning was positively and significantly related to job satisfaction and group commitment. The results suggest that employee participation in decision making process is highly desirable as it elevates employee identification with their respective organisation. The findings of the study are relevant to the people holding key managerial positions in public sector undertakings and they are discussed in detail. © Asian Academy of Management and Penerbit Universiti Sains Malaysia, 2017.Item Enhancement of the properties of fly ash based geopolymer paste by incorporating ground granulated blast furnace slag(Elsevier Ltd, 2017) Saha, S.; C, C.Research efforts have been made continuously to establish fly ash based geopolymer as an alternative binder material for the production of fresh concrete because production of Ordinary Portland Cement degrades the environment by huge emissions of carbon-di-oxide and also by consuming lot of natural resources. But most of the study reveals, fly ash based geopolymer paste needs more time to get set when it is cured at ambient temperature. As a result, it is quite impractical to use fly ash based geopolymer paste as an alternative to Ordinary Portland Cement in faster construction. In this study, an effort has been made to enhance the properties of fly ash based geopolymer paste by incorporating ground granulated blast furnace slag at various percentage levels. Microstructure of the geopolymer paste is studied using Scanning Electron Microscopy. Result of this investigation shows that significant improvement on setting time and compressive strength can be obtained by adding ground granulated blast furnace slag in the mixes. © 2017 Elsevier LtdItem Influence of Trust and Participation in Decision Making on Employee Attitudes in Indian Public Sector Undertakings(SAGE Publications Inc. claims@sagepub.com, 2017) Kumar, S.P.; Saha, S.Trust is an important component that needs to be present among individuals. Survey data from 712 managerial employees from public sector undertakings were used to examine the effects of trust and participation in decision making on attitudinal outcomes. Results indicate that trust is significantly related to job satisfaction, group commitment, and affective commitment. Participation in decision making is a predictor of job satisfaction and affective commitment, but it did not predict group commitment. Job satisfaction significantly influences group commitment and affective commitment. Group commitment predicts affective commitment and acts as a mediator between job satisfaction and affective commitment. These findings suggest that managers need to facilitate trust and active participation among employees by taking their opinions on different work aspects. Organizations that allow employees’ participation in decision making and are perceived as trustworthy have employees who exhibit more attachment and identification with their organization. © 2017, © The Author(s) 2017.Item Organizational culture as a moderator between affective commitment and job satisfaction: Empirical evidence from Indian public sector enterprises(Emerald Group Publishing Ltd. Howard House Wagon Lane, Bingley BD16 1WA, 2018) Saha, S.; Kumar, S.P.Purpose: The purpose of this paper is to investigate the moderating role of organizational culture in affective commitment and job satisfaction relationship. Design/methodology/approach: Responses were collected from 712 employees working in nine different Indian central public sector enterprises /state-owned enterprises (SOEs) by using a questionnaire-based survey. Theoretical analysis is based on social exchange theory and managerial grid theory. Data were analyzed by using partial least squares structural equation modeling. Findings: The establishment of organizational culture as a moderator in Indian organizations is unique. This study has utilized data from employees working in different departments of organizations to provide unbiased responses. The results demonstrate that impact of affective commitment on employees’ job satisfaction is moderated by supportive and innovative cultures. Additionally, this research also proves that bureaucratic culture does not play a crucial role in moderating the relationship between organizational commitment and employees’ job satisfaction. Research limitations/implications: Results are relevant to top-level and middle-level management in which people are involved in the governance of the organization, both directly and indirectly. There should be fixed working hours and optimum time management. Due to growing pressure, few employees who have personal obligations toward their families, such as nursing mothers and stressed individuals, should be provided with flexible working hours. In this way, culture can become supportive to cater to different needs of employees. Originality/value: Till date, organizational culture as moderator has received very less attention in India. The establishment of organizational culture as a moderator in Indian SOEs is unique. The results add to the growing literature of commitment from non-western context as this study is based on Indian samples. This study has utilized data from employees working in different departments of organizations to provide unbiased responses. © 2018, Emerald Publishing Limited.Item Investigation on the potential use of recycled fine aggregate to produce geopolymer mortar mix(ASTM International, 2019) Saha, S.; C, C.The utilization of construction and demolition waste (C&DW) partially or fully for various purposes in construction industries is one of the most significant solutions to overcome the scarcity of raw materials and disturbances of the environmental system. On the other hand, geopolymer is being tried to be established as an alternative sustainable binder material for ordinary portland cement. In the present study, with the thought of promoting of sustainability, an attempt has been made to use concrete wastes as recycled fine aggregate (RFA) partially to produce fly ash (FA)-based geopolymer mortar. The workability, water absorption, compressive strength at 3, 7, 28, and 56 days, volume change behavior, and chloride permeability of the produced FA-based geopolymer mortar were determined. The effects of RFA, the ratio of alkali liquid (AL) to FA, and different curing regimes on these properties of mortar mix also discussed. The morphology and microstructures of the samples taken from the mortar mix, which were observed having the highest strength under different curing regimes, were studied using scanning electron microscopy (SEM). The experimental results indicate lower workability, higher water absorption capacity, and higher drying shrinkage of geopolymer mortar mix that has more RFA content in the mix, but the compressive strength of the geopolymer mortar mix started decreasing after a certain percentage of RFA content in the mix. Utilization of that certain percentage of RFA will help us to minimize the consumption of natural fine aggregates and reduce the disturbances generated by unorganized dumping of C&DW. © 2019 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.Item Volume change characteristics of eco-friendly mortar mixes produced with geopolymeric binder and recycled fine aggregate(ASTM International, 2020) Saha, S.; Shaik, N.; C, C.The production of geopolymer mortar using recycled fine aggregate (RFA) generated from concrete waste has significant potential to be a sustainable construction material. In this article, the volume change properties of the produced geopolymer mortar mixes are studied in terms of drying shrinkage up to the age of 180 days and reported as the percentage increase with respect to the shrinkage value of 3 days. The influence of RFA content, alkaline liquid (AL) in terms of the concentration of sodium hydroxide (SH) solution, the ratio of sodium silicate (SS) solution to SH solution, and the ratio of AL to fly ash (FA) were investigated on the drying shrinkage properties of the geopolymer mortar mixes. All the cast specimens were cured at 80°C for 24 hours. Higher drying shrinkage values were observed for the mortar mixes produced with higher RFA content, AL/FA, SS/SH ratio, and lower concentration of SH solution. Scanning electron microscope images were studied for the samples taken from the geopolymer mixes showing lower drying shrinkage values to understand the microstructure. © 2019 by ASTM International.Item Performance of eco-friendly mortar mixes against aggressive environments(Techno-Press info@techno-press.com, 2020) Saha, S.; C, C.; Gupta, P.Past research efforts already established geopolymer as an environment-friendly alternative binder system for ordinary Portland cement (OPC) and recycled aggregate is also one of the promising alternative for natural aggregates. In this study, an effort was made to produce eco-friendly mortar mixes using geopolymer as binder and recycled fine aggregate (RFA) partially and study the resistance ability of these mortar mixes against the aggressive environments. To form the geopolymer binder, 70% fly ash, 30% ground granulated blast furnace slag (GGBS) and alkaline solution comprising of sodium silicate solution and 14M sodium hydroxide solution with a ratio of 1.5 were used. The ratio of alkaline liquid to binder (AL/B) was also considered as 0.4 and 0.6. In order to determine the resistance ability against aggressive environmental conditions, acid attack test, sulphate attack test and rapid chloride permeability test were conducted. Change in mass, change in compressive strength of the specimens after the immersion in acid/sulphate solution for a period of 28, 56, 90 and 120 days has been presented and discussed in this study. Results indicated that the incorporation of RFA leads to the reduction in compressive strength. Even though strength reduction was observed, eco-friendly mortar mixes containing geopolymer as binder and RFA as fine aggregate performed better when it was produced with AL/B ratio of 0.6. © 2020 Techno-Press, Ltd.