Concrete sewage pipes lead a hard life, constantly being exposed to corrosive acid produced by bacteria in wastewater. A new additive could allow such concrete to self-heal – and it would do so using ...
An open reservoir used to store toxic alumina-refining slurry breached on Oct. 4 near Ajka, Hungary, flooding the countryside with an estimated 1 million m 3 (roughly 5 million 55-gal drums) of pH 13 ...
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