Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale

Abdelhadi Bouchikhi, Walid Maherzi, Mahfoud Benzerzour, Yannick Mamindy-Pajany, Arne Peys and Nor-Edine Abriak
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Abdelhadi Bouchikhi: Laboratoire de Génie Civil et Géo-Environnement (LGCgE), Université Lille-1, 59000 Lille, France
Walid Maherzi: Laboratoire de Génie Civil et Géo-Environnement (LGCgE), Université Lille-1, 59000 Lille, France
Mahfoud Benzerzour: Laboratoire de Génie Civil et Géo-Environnement (LGCgE), Université Lille-1, 59000 Lille, France
Yannick Mamindy-Pajany: Laboratoire de Génie Civil et Géo-Environnement (LGCgE), Université Lille-1, 59000 Lille, France
Arne Peys: Sustainable Materials, Vlaamse Instelling voor Technologisch Onderzoek (VITO), Boeretang 200, 2400 Mol, Belgium
Nor-Edine Abriak: Laboratoire de Génie Civil et Géo-Environnement (LGCgE), Université Lille-1, 59000 Lille, France

Sustainability, 2021, vol. 13, issue 9, 1-19

Abstract: Few studies focus on the co-valorization of river dredging sediments (DS) and residual waste glass (RWG) in alkali-activated binders. This study investigates the use of DS as an aluminosilicate source by substituting a natural resource (metakaolin (MK)), while using RWG as an activator (sodium silicate source). Suitable treatments are selected to increase the potential reactivity of each residue. The DS is thermally treated at 750 °C to promote limestone and aluminosilicate clays’ activation. The RWG (amorphous, rich in silicon, and containing sodium) is used as an alkaline activator after treatment in 10 M NaOH. Structural monitoring using nuclear magnetic resonance ( 29 NMR and 27 NMR), X-ray diffraction, and leaching is conducted to achieve processing optimization. In the second stage, mortars were prepared and characterized by determining compressive strength, water absorption, mercury porosimetry and Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS). Results obtained show the great advantage of combining RWG and DS in an alkali-activation binder. The treated RWG offers advantages when used as sodium silicate activating solution, while the substitution of MK by calcined sediments (DS-750 °C) at 10%, 20%, and 30% leads to improvements in the properties of the matrix such as an increase in compressive strength and a refinement and reduction of the pore size within the matrix.

Keywords: dredged sediments; residual waste glass; thermal activation; alkali-activated binders (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:9:p:4960-:d:545397

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