A study on geopolymer concrete with fly ash
The use of Portland cement in concrete construction is under critical review due to a high amount of carbon dioxide gas released to the atmosphere during the production of cement. From few years, attempts to increase the utilization of fly ash to partially replace the use of Portland cement in concrete are gathering momentum. Geopolymer concrete is a ‘new’ material that does not need the presence of Portland cement as a binder. Instead, the source of materials such as fly ash, metakaolin that are rich in Silicon (Si) and Aluminium (Al) are activated by alkaline liquids to produce the binder. Hence concrete with no Portland cement. This study reports the details of the development of the process of making low calcium based fly ash and Metakaolin-based geopolymer concrete. In the present experimental study, attempts are made to study on the various strength properties like compressive strength, split tensile strength, an also durability properties like initial surface absorption test on Geopolymer concrete made up of fly ash and Metakaolin. ISAT test was held on long-term durability properties of Geopolymer concrete. Experiments were conducted on Geopolymer Concrete with different percentages of metakaolin and molarity of alkaline activator. Studies were made on the residual compressive strength of Geopolymer Concrete mixes. It was observed that as the addition of Metakaolin to control the concrete mix of fly ash increases, the workability of the concrete mix was found to decrease as compared to Fly ash based control mix. It is observed from the experimental results and its analysis, that compressive and splitting tensile strength of geopolymer concrete increases with using high molarity NaOH solution and 25 to 50 percent Metakaolin. The replacement of fly ash up to this percentage shows 10 to 12% increment in Compressive strength and 28 to 34% increment in the split tensile strength of geopolymer concrete at 28 and 90 days respective
Published by: Digvijay Singh, Sherin Felix
Author: Digvijay Singh
Paper ID: V4I4-1312
Paper Status: published
Published: July 23, 2018
Strength and durability characteristics of concrete with steel fiber
With the improvement and modernization of societies, a lot of production activities are seen everywhere. These construction activities are increasing at a faster charge by way of large quantity. Also, the destruction of present structures, which have reached their provider lifestyles, runs parallel to the construction sports. It isn't crucial that the structures need to be demolished most effective after they have completed their carrier lifestyles, however also due to exchange in style and the ongoing trend of reconstruction of even healthful structures just for developing the greater area on the way to meet the prevailing demand. All such sports are producing waste in bulk, and this waste is called the Construction and Demolition (C&D) waste. Disposal of such C&D waste in a sustainable manner is a difficult nut to crack for the developers, developers, and owners. While the disposal of C&D waste is an undertaking, on the other hand, there is a severe shortage of obviously to be had aggregates for production of systems. Reduction of this call for in a small way is feasible with the recycling or reusing of creation and demolition waste generated from the development of sports. Hence, the recycling of demolished waste is a sustainable solution for C& D waste. The recycled concrete mixture has restricted utility as fill and subgrade fabric below the basis of systems, pavement, and many others. Those packages are non-structural applications. However, research has been ongoing all around the globe mainly in Japan, China, European nations and a few a part of India also, from final 50 years so one can find the ability implement of recycled aggregates as a structural grade concrete. The studies work on “A Study on Development of Steel Fiber Concrete made with RAC” is offered right here and is one such try to establish the RAC as a structural grade concrete. These studies work awareness on especially four structural properties of concrete i.E. Compressive Strength, Split Tensile Strength, and Durability. In this gift look at the experimental element is split into two exclusive series viz. Series-A (without fibers concrete blend) and Series-B (1% with the aid of extent Steel fibers in the concrete mix). The natural coarse aggregates are changed with Recycled coarse aggregates at one-of-a-kind substitute ratios. Four substitute ratios are considered in this gift take a look at zero% (manage specimens), 25%, 50% and a hundred%.
Published by: Jitendra Singh Yadav, Sherin Felix
Author: Jitendra Singh Yadav
Paper ID: V4I4-1310
Paper Status: published
Published: July 23, 2018
“White rusting of rocks”– The phenomena observed at Lonar crater lake
Abstract For the first time, white rusting/white coating of Silica on basaltic rocks has been observed at Lonar Crater Lake. Silica coating has been observed on basaltic rocks of Kilauea flow in Ka’u Desert on Hawaiian volcanic islands and has also been observed on the surface of Mars at Gusev Crater. The term white rusting/white coating of silica has been used for the same feature i.e., silica coating. White rusting /white coating phenomena observed on basaltic rocks of Lonar Crater Lake shows similarity to the silica coating observed on basaltic rocks of Kilauea flow in Ka’u Desert. Representative rock samples covered by white layer/white coating/white rusting were collected and after removal of the white-coated part were analyzed by XRF, showed that major oxide component was Silica (SiO₂) – 95-97 % mass of amorphous nature with minor quantities of SO₃, Fe₂O₃, Al₂O₃, CaO, and Cr₂O₃. The oxide content detected in white coating component at Lonar and that detected in silica coating on basaltic rocks of Kilauea flow in Ka’u Desert of Hawaiian volcanic islands shows good agreement which infers that similar process or unknown process may be operating at Lonar Crater Lake. From the studies carried by different researchers on silica coating on basaltic rocks of volcanic origin, it infers that the formation of white rusting at Lonar crater lake may be related to volcanic eruption or weathering conditions or physical changes due to climatic conditions existing at Lonar from the time the lake was formed. The white rusting is known to be a polymorph of silica in which SiO₂ value is found to be 95 – 97 mass %. This paper reports the first-hand information of observations and findings of white rusting/ white layer coating phenomena on basaltic rocks at Lonar Crater Lake on a preliminary basis and to put on record the works carried out regarding white coating phenomena with respect to silica coating on basaltic rocks of Kilauea flows in Ka’u Desert on Hawaiian volcanic islands.
Published by: Jadhav Raju D, Mali Harishchandra B.
Author: Jadhav Raju D
Paper ID: V4I4-1278
Paper Status: published
Published: July 23, 2018
A study to determine the impact of emerging online shopping sites on conventional model of buying and selling with reference to Pune city
This study attempts to focus on the impact of emerging online shopping sites on the conventional model of buying and selling with reference to Pune City. Retailers involve a large segment of the population and a large population is reliant on these retailers. However, the entrance of online shopping sites which have attractive incentives and wide-ranging varieties have put the conventional stores in an adverse situation. This research studies the preference of customers and their attitudes towards online and in-store shopping in various age brackets and also the reasons for doing so. This research also studies the different aspects of conventional retail businesses are affected and the different recovery mechanisms used by them to counter the online shopping sites in their survival race. This study also tries to cover the customer’s viewpoint on purchasing online or in conventional stores which are being preferred by them.
Published by: Vaishalli Nikalje
Author: Vaishalli Nikalje
Paper ID: V4I4-1313
Paper Status: published
Published: July 23, 2018
Improved sparse logistic regression for efficient feature selection
Variable and feature selection have become the focus of most of the research areas of application for which datasets with hundreds of thousands of parameters are available. These areas may include health risk prediction, text processing of internet documents, gene array analysis etc. Features gathered for analysis may not be completely informative; some may contain noise, some may require normalization or most of them can be irrelevant. The goal of feature selection is to improve predictions of predictors, provide faster & cost effective predictors and provide a better understanding of the underlying process and the data. In feature selection, sparse logistic regression method serves best for countably selecting the important attributes. The logistic loss function is included for sparsity purpose. The regularization parameter is responsible for controlling the sparsity factor. It provides the most effective and relevant variable selection for a specific model. Most of the applications where prediction is required, this method serves its best purpose.
Published by: Shreyal Gajare, Shilpa Sonawani
Author: Shreyal Gajare
Paper ID: V4I4-1283
Paper Status: published
Published: July 20, 2018
Properties of GR-regular spaces in topology
In 2011, S.Bhattacharya (Halder) has introduced the concepts of gr-closed sets in topological spaces. In 2012, S.I.Mahmood has defined and studied the concepts of gr-continuity, gr-irresoluteness, perfect gr-continuity and Tgr – spaces. The purpose of this paper is to investigate and study the concepts of gr-regular spaces, Gr-regular spaces, GR-regular spaces along with some allied gr-continuity and some allied gr-regularity axioms in topology.
Published by: Govindappa Navalagi, Sujata Mookanagoudar
Author: Govindappa Navalagi
Paper ID: V4I4-1294
Paper Status: published
Published: July 20, 2018
