No abstract

No abstract

No abstract

No abstract

No abstract

In the recent past, there is an increased interest throughout the research community to minimize the production of ozone harming substances which directly affect global warming. Cement production and consumption emit 7% ozone‐depleting substances into the atmosphere consistently. In an attempt to address this challenge, one of the efficient decisions being employed as of late incorporates the utilization of geopolymer concrete (GPC). In this paper, metakaolin is viewed as the key component which is rich in silica and alumina, responsible for the strength and durability of the GPC mix product. It is exposed to varying compositions to discover the ideal compositions to find out the optimum loading that gives the best properties and performance to the GPC paver blocks. Additionally, nanosilica which reduces the pores is included little amounts to the optimized GPC mix to comprehend the additional impact it accommodates the advancement of the performance of GPC mix paver blocks. In order to examine the performance of GPC paver blocks, properties such as density, compressive strength, water absorption, and abrasion resistance were evaluated for different loading levels of metakaolin (10, 20, 30, and 40%) and nanosilica (0.5 and 1%) GPC mix samples. It is seen that 30% metakaolin and 0.5% addition of nanosilica give optimum results than other combination of materials in the GPC mix.

The United Nations acknowledges that action in one of the 17 Sustainable Development Goals (SDGs) will impact outcomes in others and that development should interact the social, economic, and environmental sustainability. Many countries have prioritized goals and targets based on their current progress and the prosperity of their people. This article focused on SDG 6: Clean water and sanitation, especially the first two (6.1 and 6.2) out of eight targets. The author has considered SDG 6, a critical goal to focus on and achieve in Tirunelveli city municipal corporation. The study area is situated in the Tirunelveli district of Tamil Nadu, India's southernmost state. Citizen science (CS), also known as community science, has emerged as an effective method of collecting data and supporting a wide range of indicators from the SDG targets. The objective of this article is to utilize the benefit of the CS approach for monitoring the targets 6.1 and 6.2 pertained to drinking water and sanitation facilities respectively in the study area. The activities suggested for this SDG 6 CS project were framing the core question, identification of citizen scientists, data analysis, and action plan. College students, ward councilors, and community volunteers, referred to as three categories of citizen scientists, will collect household data for all 55 wards in the study area. The value of the collected data to various government agencies and monitoring organizations is also discussed.

No abstract