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News Displaying items by tag: fly ash

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Dalhousie University proceeds to Phase 2 of research into concrete production with waste gypsum

10 September 2021

Canada: Dalhousie University, in collaboration with the Canada and US joint Gypsum Association and Divert NS, has entered Phase 2 of its research project into uses of construction and demolition waste gypsum in concrete. The research, continuing until September 2023, will test the durability of various concrete mixes containing gypsum powder recycled from waste drywall. It will examine 81 specimens under three environmental exposures and three exposure durations. The team will use the results to understand the performance and environmental benefits of concrete containing recycled gypsum over the life of a structures. Study leader and Canada research chair in sustainable infrastructure Pedram Sadeghian said that Phase 1 of the study had demonstrated that gypsum could be a viable supplementary cementing material when combined with fly ash in concrete.

Sadeghain said “Our research group aims to study the durability of concrete containing recycled gypsum by monitoring compressive strength and potential expansion after exposure to selected environmental conditions, such as moisture and salt particle penetration, that are common to concrete structures exposed to the environment.”

Gypsum Association executive director Stephen Meima said “The gypsum industry is committed to landfill diversion of construction and demolition gypsum panel waste, and Professor Sadeghian’s work demonstrates that waste gypsum panels may have value beyond their service life in buildings and homes.”

Published in Global Gypsum News
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Elektroprivreda Srbije builds river terminal in Serbia

09 April 2019

Serbia: Elektroprivreda Srbije, a government-owned power company, has completed a Euro14m terminal on the River Danube for its Kostolac B coal-fired power plant. The unit will be use to transport 105,000t/yr of synthetic gypsum and 157,000/yr of fly ash. It will also process limestone. The terminal was built as part of the first phase of a credit arrangement between Serbia and China.

Published in Global Gypsum News
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