[5] reviewed glass chemistry, alkali silica reaction mechanism, expansion of concrete
containing glass aggregates and micro structure of the interfacial transitional zone between cement
paste and glass particles. It has been noticed that the mechanism of expansion of concrete caused by
glass aggregate is different from that by traditional ASR expansion. It was conferred that the
expansion of concrete containing glass aggregate reacts with alkalis in the cement to from alkali
silicate or NCSH which absorbs water and cause expansion. The author suggested that it is necessary
to control the pH of the concrete under 12 in order to avoid deleterious expansion and cracking of
concrete containing large glass particles.
2.Recycling