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The current study mainly focuses on the effect of varying diameter recycled steel fibers (RSF) on mechanical properties of concrete prepared with 25 and 50% of recycled coarse aggregate (RCA) as well as 100% natural aggregate (NA). Two types of RSF with 0.84 mm and 1.24 mm diameter having 30 mm length were incorporated into normal and recycled aggregate concrete (RAC).

The fresh behavior, compressive, splitting tensile, flexural strengths and modulus of elasticity of all the mixes were investigated to evaluate the mechanical properties of RACs. In addition, specimen crack and testing co-relation were analyzed to evaluate fiber response in the RAC.

According to the experimental results, it was observed that mechanical properties decreased with the increment replacement of NA by RCA. However, the RSF greatly improves the mechanical properties of both normal concrete and RACs. Moreover, mixes containing 1.24 mm diameter RSF had a more significant positive impact on mechanical properties than mixes containing 0.84 mm diameter RSF. The 0.84 mm and 1.24 mm RSF addition improved the mixes' compressive, splitting tensile and flexural strength by 10%–19%, 19%–30% and 3%–11%, respectively when compared to the null fiber mix. Therefore, based on the mechanical properties, the 1.24 mm diameter of RSF with 25% replacement of RCA was obtained as an optimum solution in terms of performance improvement, environmental benefit and economic cost.

The practice of RCA in construction is a long-term strategy for reducing natural resource extraction and the negative ecological impact of waste concrete.

This is the first study on the effects of varying size (0.84 mm and 1.24 mm diameter) RSF on the mechanical properties of RAC. Additionally, varying sizes of RSF and silica fume added a new dimension to the RAC.

Information Systems – IT Strategy Design and Implementation.

The case can be discussed in Marketing Management courses and IT Strategy classes in MBA, executives from NGOs who are participating in Management Development Programs, etc. It can also be used in entrepreneurship classes. The case serves as an illustration to entrepreneurship projects, and so this case can be discussed in training program for budding entrepreneurs intending to implement cloud in its IT infrastructure.

E-commerce is big nowadays in India. In e-commerce, particularly e-tail in India is witnessing a boom with players reporting achieving revenue targets earlier than anticipated. Though e-tail sites are now ubiquitous and dime a dozen with multiple offerings or specialized offerings, the e-grocery model is yet to take off on a large scale across India. E-grocery model has its unique challenges on both supply as well as distribution side unlike other e-tail business. As it deals with perishable items, it faces challenges in supply chain, procurement, inventory management, cold storage management, quality and logistics. To solve such problems, high degree of localization is needed for players in this business. It requires them to open up multiple warehouses at strategic locations in a city if they decide to have control over the goods they sell. Start-ups in this space face the problems in monitoring inventory levels across warehouses where they use disparate Point of Sales (POS) systems. There is a lack of synchronization among the POS applications across the warehouses for which they are able to take the benefit of economies of scale during procurement and distribution. Also, they face stock out and excess inventory across stock keeping units (SKUs). To solve this problem, a strategy is needed so that they can maintain data for all its warehouses through a single database and also by which they can scale up easily and at a lower investment without disturbing continuity in business.

Following are the learning outcomes: to learn about the business model and market ecosystem of an e-tailing business dealing in grocery items in a tier-II city in its introduction phase of organizational life cycle, to learn about various processes involved in online ordering of an item from an e-commerce website, to understand the various challenges faced by an organization dealing in e-tailing business in its introduction phase and to find out whether IT Strategy can be of help to overcome these challenges, to have an understanding of the Balance Score Card and Departmental Score Card, to understand how cloud can be of help to overcome the challenges and what are the possible cloud architectures to address such problems, to get an idea about how return on investment can be measured for finding feasibility of investment in cloud and to have the understanding of risk associated with implementing cloud and the cost of mitigating those risks.

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CSS:11 Strategy.

This paper aims to present an experimental investigation on the performances of alkali-activated slag (AAS) concrete and Portland slag cement (PSC) concrete under the influence of elevated temperature. In the present study, the alkali-activated binder contains 85% of ground granulated blast furnace slag (GGBFS) and 15% of powder blended as chemical activators.

For the purpose, standard size of cube, cylinder and prism have been cast for a designed mix of concrete. The AAS concrete specimens were kept for water as well as air curing. After attaining the maturity of 28 days, the samples were first exposed to different elevated temperatures, i.e. 100°C, 200°C, 300°C, 400°C, 500°C, 600°C, 700°C and 800°C. Later on, the tests were conducted on these samples to find the change in weight and the residual strength of the concrete.

After 500°C exposure, a considerable amount of the strength loss has been observed for AAS concrete. It has been evaluated that the performance of AAS concrete is better than that of the PSC concrete at elevated temperature.

The present research work is being applied on the material for which the experimental result has been obtained.

The author has tried to develop a new type of binder by using steel industry waste material and then tested at elevated temperature to sustain at high temperatures.

This research may give a social impact for developing mass housing project with a lower cost than that of using a conventional binder, i.e. cement.

A new type of binder material is being developed.