Abstract
Recycling of glass industry waste is relevant in the world today. It is caused by the increase of environmental problems and devastation of natural resources. One of the option of cullet recycling is production of foamed lightweight glass aggregate. It is energy efficient material with size up to 75 mm, irregular shape and relatively low strength. High specific surface area of aggregate leads to increase the cement consumption to achieve acceptable concrete compaction. This article presents the results of size gradings selection of coarse foamed glass aggregate and its water demand in concrete mix. The determination of structure formation period and water demand of foamed glass aggregate are presented. The influence of particle size distribution of lightweight aggregate on structure formation period of lightweight concrete is established. The density and compressive strength of structural lightweight concrete with foamed lightweight glass aggregate are 1468 kg/m3 and 19 MPa, respectively. The density and strength of insulating lightweight concrete are 1167 kg/m3 and 10 MPa, respectively. The cement consumption of structural and insulating concrete is 260 kg and 254 kg, respectively.
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