Advanced Moisture Sensing Technology for Urban Greenery And Monitoring of Slope Stability
Many parts of the world experienced the impact of global warmings such as significant variations in rainfall and weather patterns. Consequently, these changes result in adverse effects on moisture contents of soils. Moisture content in soil is the key factor which determines plant health, soil characteristics and slope stability. The awarded project aims to develop analytical tools and advance moisture sensing technology for monitoring of plant health and sustained plant growth as well as safety of unsaturated and vegetated slopes under various climatic conditions.
Production of MgO Cement from Waste Reject Brine Obtained from Desalination Plants
Reactive magnesium oxide (MgO) cement has several advantages when compared to Portland cement (PC), including its ability to gain high strengths by absorbing and storing atmospheric CO2 permanently in the form of stable carbonates and its recyclability at the end of its lifetime. In line with these advantages, the main objective of this project is to develop sustainable cement binders from locally available reject brine.
This approach has a high significance as the local production of cement from reject brine will not only reduce Singapore’s reliance on importing cement from other countries, but also mitigate the current threat of desalination to marine organisms, save natural resources and create employment opportunities by involving local industries within Singapore.
Furthermore, the use of the proposed binders will pave the way for the sequestration of atmospheric CO2 as stable carbonates in cement-based mixes. In this project, the performance of MgO cement extracted from rejected brine will be evaluated and compared with traditional PC. The feasibility of producing MgO cement with high reactivity from reject brine and its recyclability will also be studied to propose a sustainable business plan.