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Strength and failure characteristics of self compacting concrete containing recycled waste glass aggregate

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Document pages: 12 pages

Abstract: The effects of different proportions of green waste glass and broken glass on the mechanical properties and fracture properties of self compacting concrete were studied. Waste bottles were collected, cleaned, crushed and screened to prepare the broken glass used in this study. Broken glass is added in different percentages (0 , 20 , 40 , 60 , 80 and 100 by weight) instead of natural fine aggregate (NFA) and or natural coarse aggregate (NCA). Three SCC series are designed with constant slump flow of   mm, total binder content of 570   kg m3 and water binder ratio of 0.35. In addition, fly ash (FA) Used in concrete mixture, accounting for 20 of the total binder content. Mechanical aspects, such as compression, splitting tension, net bending strength and elastic modulus of SCC were investigated and experimentally computed at 28 days of age. Moreover, failure characteristics of the concretes were also monitored via three-point bending test on the notched beams. The findings revealed that the mechanical properties as well as fracture parameters were adversely influenced by incorporating of WG cullet. However, highest reduction of compressive strength did not exceed 43 recorded at 100 WG replacement level. Concretes containing WG showed less brittle behavior than reference concrete at any content.

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