Document Type : Research Paper


1 Civil Engineering Dept., University of Technology-Iraq, Alsina’a Street, P.O. Box 10066, Baghdad, Iraq.

2 Building and Construction Engineering Department, University of Technology -Iraq


The harnessing of glass waste, which is slow to decompose and has high recycling costs, is in the interest of supporting and stimulating a balanced construction pattern that is interdependent on the living environment. Consumable food and drink bottles are one of these forms of waste that can be calibrated to meet desired specifications. Controlled low-strength materials with low and deliberate strength for future excavation have highly desirable rheological properties, active hardening, and zero or rare separation of materials can be maintained with waste glass substitution. In this study, an experimental evaluation was commenced to estimate the practicality of waste glass (fine and coarse powder) by replacing fly ash and natural sand with it to control low-strength materials. A sum of seven slurry blends was intended by employing several ratios (10%, 30%, and 50%) of fine and coarser waste glass. Some characteristics of plasticity and hardness were observed, such as fine glass decreased flowability. In contrast, coarser glass decreased dramatically, exceeding the minimum limit of 20%, which necessitated the use of superplasticizer in a proportion that corresponds to the increase in the replacement. Unit weight slightly increased with fine glass substitution, but in the Coarser substitution, a steady decrease occurred. The compressive strength of 28 days in fine glass replacement is less than the reference mixture, but it exceeded it at 90 days. A mixture incorporating coarse waste glass was higher at 28 days and developed at 90 days.

Graphical Abstract


  • The ability to use recycled glass as a substitute to fly ash and sand.
  • The effect of waste glass percentages on plasticity and the mechanical properties of controlled-low strength materials.
  •  The possibility of producing sustainable, controlled, low-strength materials of excavatable and structural flowable fill by using recycled fine and coarse recycled glass.


Main Subjects

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