http://nopr.niscpr.res.in/handle/123456789/62044 2026-10-10T22:20:19Z http://nopr.niscpr.res.in/handle/123456789/62064 Title: Effect of Elevated Temperature on Diverse Properties of Concrete Containing Waste Materials Authors: Ghosh, Sudipta; Samanta, Amiya K; Sahani, Ashok K Abstract: Among the growing industries around the globe, concrete industry has been contributed significant role to the national economy. The most widely used construction material and the second-most consumed material in the world after water is concrete, which has been employed as insulation in applications involving high temperatures. This extensive review has been highlighted the best possible extracts from the literature on the assessment of thermal effects on various properties of concrete containing various waste products, in particular. Few enhanced performance after being subjected to high temperatures have been reported when industrial by-products are replacing conventional ingredients. Various mechanical properties of concrete after exposure to elevated temperatures have been recapitulated and reviewed. Effect of elevated temperature on many significant physicochemical, mechanical, microstructural changes in concrete made with various materials such as waste slags, recycled coarse and fine aggregates, silica fume, fly ash, crumb rubber, etc. have been vividly summarized and compared. Better performances for concrete incorporating recycled aggregates under exposure to elevated temperature have been reported from the results. Finally, the authors have made an attempt to summarize the short-comings in the specific field of research and discussed on available future scopes on utilization of various industrial by-products in sustainable concrete production under elevated temperature. Page(s): 195-211 2023-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62062 Title: A Study on Microstructural Behaviour and Mechanical Properties of Composites Fabricated by Friction Stir Processing Authors: Mishra, Smriti; Kumar, Jatinder; Singh, Hari Abstract: Being a green manufacturing technique, FSP could be viewed as the most important advancement in the field of metal joining and composite fabrication. In the current scenario, it is required for any production technique that,it should be efficient, versatile and environment friendly. Nowadays surface composites are the most suitable materials for industrial purposes and for its fabrication, the most evolving production technique is FSP. Surface properties can be enhanced by using this technique such as strength, hardness, corrosion resistance, ductility, abrasion wear, formability, fatigue etc. Earlier, it was used to fabricate the composite of mainly aluminium and magnesium-based alloys, but now this technique can be used on steel, titanium, and other metal alloys also. Nowadays various research has been going on in the field of metal foam fabrication which is fabricated by mixing the base material with the blowing agents and the surface properties of the metal foam is better than the surface composites in term of hardness, strength, fatigue life, etc. The current review has classified to discuss the effect of the process parameters, geometry and material of the tool, reinforced particles, microstructural behaviour and surface properties of the composites and metal foam. Page(s): 212-225 2023-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62061 Title: Development and Performance Investigation of Solar Concrete Collector at Different Climatic Conditions Authors: Waghmare, Pratik M; Sollapur, Shrishail B Abstract: The current article discusses the study of the Development and Performance Investigation of a Solar Concrete Collector at Different Climatic Conditions. The solar concrete collector is a modification over conventional solar water heaters. This concrete is mainly made up of sand and cement. The solar concrete collector with an area of 2 m2 has been developed and tested for all three seasons, i.e., rainy, winter, and summer seasons. The inlet water temperatures and outlet water temperatures have been recorded along with corresponding solar intensities for any five successive days in a month. A family of 5–6 peoples requires about 130–150 liters of water daily for bathing and other purposes. So, we have selected a flow rate of 30 liters per hour of water. These observations have been recorded between 12:00 and 16:00PM. Also, hot water temperatures stored in an isolated storage tank are recorded the very next morning. An arrangement consists of K-type thermocouples, a 12-channel temperature indicator, and a pyranometer. Using recorded observations, the performance of a solar concrete collector has been determined. Page(s): 226-231 2023-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62060 Title: Parametric Study of Earth-Air Heat Exchanger based on Physical Experimentation Authors: Goyal, Vaishali; Asati, Arun Kumar; Garg, Rajeev Kumar; Arora, Amit Abstract: The depletion of non-renewable energy resources at an alarming rate has instigated a heightened interest in renewable energy systems or those that use minimal non-renewable energy sources. Although the earth's temperature varies based on depth and ambient temperature, it reaches a constant temperature known as Earth's Undisturbed Temperature (EUT) at a certain depth. The EUT has been utilized to preheat or pre-cool the ambient air via an Earth Air Heat Exchanger (EAHE), as it is lower than the ambient temperature in summer and higher than the ambient temperature in winter. Researchers across the world have conducted physical and numerical experiments to assess the EAHE's performance under various inlet parameters and materials. This paper presents a review of the findings by various researchers, along with their novel and innovative ideas. Page(s): 232-239 2023-06-01T00:00:00Z