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As Engineering Teachers, Do We Resemble A T20 Cricket Batsman or A Test Cricket Batsman?: Let Us Introspect
(International Research Journal of Engineering and Technology (IRJET), 2024-10) Patil, Dada S.
The title might puzzle the readers. The author positively hopes that the work carried out and the content presented in this paper with reference to an effective teachinglearning process, in general and teaching-learning mechanism in engineering education, in particular would probably convince the readers about the appropriateness and relevance of this unusual sounding title. The so called smart engineering students of Generation Z are habituated to shortcut and mechanical way of learning rather than in-depth and conceptual learning; so, they tend to pursue the teacher for a quick way of teaching. Hence, the attainment of various learning levels, as depicted in Bloom’s taxonomy, in a true sense, remains an ambiguous issue. The author shared his short video with the second year civil engineering students to carry out an interesting exercise through Google form survey. The video contained a demonstration of calculation of two support reactions of a simply supported beam, from first year engineering mechanics course. Intentionally, the problem was demonstrated in a highly mechanical way through the video, without explaining the concepts at depth. A Google form containing 8 questions was circulated among the students. In all, 46 students responded. The first question was exactly similar to the problem demonstrated in the video. It was correctly answered by 30 students, thereby making the passing rate as 65.2%. Questions 2 to 8 were related to the first question; however, critical thinking and conceptual teaching was needed to answer those. Most of the students performed poorly while attempting those questions. This clearly underlined a dire need of imparting strong fundamentals to the learners by an engineering teacher. Along with discussing the significance of various modern tools and techniques for an efficient teaching-learning mechanism, this paper mainly stresses upon the need of conceptual teaching. Key Words: Bloom’s taxonomy, teaching-learning, conceptual teaching, modern tools and techniques of teaching, e-learning, Google form survey, etc.
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Concrete Mix Design for M35 Grade: Comparison of Indian Standard Codes, IS 10262: 2009 & IS 456:2000 with American Code, ACI 211.1-91
(International Research Journal of Engineering and Technology (IRJET), 2019-02) Patil, Dada S.
A rational & logical Concrete Mix Design to cater to the practical requirements plays a key role in concrete engineering. It is well established fact that the concrete is highly consumed material throughout the world. With the exponentially high demand of infrastructure facilities, the concrete requirement is on a very huge scale. Therefore, using the optimum quantities of concrete making constituent materials is of utmost importance in order to achieve the desired fresh & hardened properties. Owing to an enormous utilization of concrete in day- to-day construction work, economy is a vital factor to be considered. In India, mix design is carried out by following the rules prescribed in IS 10262: 2009 & IS 456:2000. As a well known fact, every country has its own codes to design a concrete mix. In this paper, an attempt has been made to compare the Concrete Mix Design of M35 grade by the American Code; ACI 211.1-91 with Indian codes IS 10262: 2009 & IS 456:2000. The outcomes are critically reviewed & the comments are given. Keywords: OPC, (w/c) ratio, nominal maximum size of aggregate, workability, slump, target mean strength, etc.
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Utilizing Porous Light Weight Aggregates for Self-Curing Concrete: Mechanism & Practical Considerations in Ready-Mixed Concrete Plant
(International Research Journal of Engineering and Technology (IRJET), 2019-02) Patil, Dada S.; Anadinni, Shrishail B.
Concrete needs adequate curing in order to exhibit desired strength & durability properties. If the concrete receives insufficient curing, the cement will not hydrate fully. It is well known fact that higher fraction of cement getting hydrated produces the desirable compounds in the concrete. Moreover, it leads to an enhanced field performance of the concrete. Development of concrete with self curing (internal curing) ability can be the solution. Internal curing (IC) is curing the concrete from inside. The additives like Superabsorbent Polymer (SAP), Shrinkage Reducing Admixture (SRA) viz., Polyethylene glycol, propylene glycol, polyvinyl alcohol, paraffin wax, acrylic acid & pre-wetted light weight aggregates can be used as self curing agents. These materials facilitate extended hydration of the cement & cause lesser shrinkage. The research in the field of Self-Curing Concrete indicates the encouraging effects of these additives on degree of hydration, interface transition zone (ITZ), micro structure & other properties of concrete. The studies in the field show that Internal Curing has advantages such as reduction in shrinkage cracking, plastic shrinkage crack formation, water absorption, etc. The effectiveness of self curing has been proved in the laboratory, but the implementation on the field is yet not so common & encouraging. In this paper, an attempt has been made to discuss the mechanism & advantages of internal curing by incorporating Light Weight Aggregates. The paper also throws some light on how the internal curing can be practiced in the construction field. The practical considerations at the RMC plant are discussed. Key words: Concrete, plastic shrinkage, w/c ratio, autogenous shrinkage, internal curing, ITZ, chemical shrinkage, RMC plant.
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Need of serious and professional approach towards the site visits for civil engineering learners for an effective teaching-learning process in its true sense
(K.K Wagh Institute Of Engineering Education and Research (KKWIEER), Nashik, 2019) Patil, Dada S.
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Enhancing Bloom's learning levels for an outcome based teaching-learning process in geotechnical engineering: A case study of failed boiler house
(K.K Wagh Institute Of Engineering Education and Research (KKWIEER), Nashik, 2019) Patil, Dada S.