Cyclic Behavior of Cellular Glass Aggregates: An Experimental Comparison with Natural Aggregates
Layal Jradi, Bassel Seif El Dine, Jean-Claude Dupla, Jean Canou
TL;DR
This study compares the cyclic mechanical behavior of cellular glass aggregates to natural aggregates, showing they can be a sustainable alternative in construction.
Contribution
The novel contribution is the experimental characterization of CGA's strain-dependent stiffness and damping behavior under cyclic loading.
Findings
CGA exhibits strain-dependent stiffness and damping behavior comparable to natural aggregates at moderate strains.
Young’s modulus decreases from 300–600 MPa to 40–80 MPa as strain increases, with damping ratios rising from 2–3% to 7–10%.
The mechanical behavior of CGA aligns with that of sands and gravelly soils in the literature.
Abstract
The construction sector is a major user of natural materials and a key contributor to global carbon emissions. To tackle these environmental challenges, the use of recycled products has become increasingly important in modern engineering. Cellular glass aggregate (CGA), made from recycled glass, is a material with potential as a sustainable alternative to natural aggregates. This study characterizes the cyclic behavior of CGA using a large-scale triaxial apparatus, focusing on seismic-relevant properties such as the damping ratio and Young’s modulus. Local displacement transducers (LDTs) were implemented to improve measurement at small strains. The results show that CGA exhibits strain-dependent stiffness and damping behavior comparable to natural aggregates at moderate strains (10−4–10−3). The Young’s modulus ranges from approximately 300 to 600 MPa, while damping ratios remain at…
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Taxonomy
TopicsGeotechnical Engineering and Soil Stabilization · Landfill Environmental Impact Studies · Masonry and Concrete Structural Analysis