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Item Durability studies of steel fibre reinforced concrete(Springer, 2019) Yadav, S.; Das, B.B.; Goudar, S.K.In the present investigation, the effect of different dosage of steel fibres on bond strength between steel and concrete in reinforced concrete was investigated. As a part of durability study, the combined effect of marine environment and varying levels of pH on the ultimate bond strength retention and compressive strength retention of steel fibre reinforced concrete was also investigated. Durability studies were carried out by exposing the 28 days cured cubical specimens into marine environment having different pH levels (1, 4, 7, 10 and 13). The marine environment was simulated in the laboratory by adding 3.5% NaCl to the tap water. Designed quantity of sulphuric acid was added to salt solution to maintain pH of 1 and 4 in marine environment. Similarly, designed quantity of sodium hydroxide was added to the salt solution to maintain pH of 10 and 13 in marine environment. The specimens were exposed for the durations of 60 and 90 days. The resistance of concrete to marine environment with varying pH was measured through compressive strength retention and ultimate bond strength retention in steel fibre reinforced concrete. The addition steel fibres reduced workability of concrete, especially 1.5% of steel fibres yielded considerably low slump value. The ultimate bond strength and compressive strength values increased due to the addition of steel fibres. The pH of the marine environment has a significant influence on the compressive strength retention and bond strength retention. Exposure to marine environment with pH 1 underwent severe loss in compressive strength and ultimate bond strength with very low strength retention values. However, exposure to marine environment with pH 10 and 13 had minimal strength losses with higher values of compressive strength and ultimate bond strength retention. The alkaline nature of marine environment was not susceptible to strength reduction when compared to neutral (pH 7) and acidic (pH 1) marine environment. The steel fibre reinforced concrete performed better in acidic marine environment compared to control concrete without steel fibres. © Springer Nature Singapore Pte Ltd. 2019.Item Mitigation of RPL stateless address auto-configuration IPV6 spoofing attack in IOT(Apple Academic Press, 2023) Yadav, S.; Gangwar, S.; Kembhavi, P.; Chandavarkar, B.R.; Kamble, S.As wireless network usage is expanding, attempts are being made to disrupt the smooth functioning of the network. Due to power and memory constraints inherent in the Internet of Things (IoT) devices, implementing security measures becomes an even more significant challenge. There are many ways in which confidential information can be extracted from networks. IP address spoofing is one such attack. IP address spoofing is an illegal, unauthorized change of IP address. Malicious elements in the network impersonate as a genuine client by copying their IP address. As a result, attackers can intercept network communication between genuine clients. A false IP address makes it possible for the attacker to bypass existing security mechanisms, which creates severe security and confidentiality problems. This chapter proposes a method to resolve the issue by ensuring that an incoming node in a network always gets a unique IP address, thus making it difficult for the attacker to disguise itself as a genuine client and carry out the attack. © 2023 Apple Academic Press, Inc. All rights reserved.