This page has only limited features, please log in for full access.
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 (29NMR and 27NMR), 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.
Abdelhadi Bouchikhi; Walid Maherzi; Mahfoud Benzerzour; Yannick Mamindy-Pajany; Arne Peys; Nor-Edine Abriak. Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale. Sustainability 2021, 13, 4960 .
AMA StyleAbdelhadi Bouchikhi, Walid Maherzi, Mahfoud Benzerzour, Yannick Mamindy-Pajany, Arne Peys, Nor-Edine Abriak. Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale. Sustainability. 2021; 13 (9):4960.
Chicago/Turabian StyleAbdelhadi Bouchikhi; Walid Maherzi; Mahfoud Benzerzour; Yannick Mamindy-Pajany; Arne Peys; Nor-Edine Abriak. 2021. "Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale." Sustainability 13, no. 9: 4960.
Waste glass based geopolymers have a high potential in the future as an eco-friendly inorganic binder. However, limited studies are available on the use of the residue of waste glass recycling in this type of binder. This work investigates the valorization of Residual Waste Glass (RWG) (the final waste of glass recycling centers) crushed at d90 < 13 μm in a geopolymer activating solution. RWG is thus used as source of free silicon with metakaolin (MK) as source of aluminosilicates. The activating solution from RWG was prepared in four ratios with a sodium hydroxide solution of 10M: R1 (10M-NaOH + 10g RWG), R2 (10M-NaOH + 20g RWG), R3 (10M-NaOH + 30g RWG) and R4 (10M-NaOH + 40g of RWG). The effect of these treatments on the mobility of metallic and metalloid trace elements (MMTE) and major elements (Si4+ and Al3+) was measured. The structure of the solid phases produced after drying at 120°C/24h was studied using Fourier Transformed Infrared (FTIR) spectroscopy, Nuclear Magnetic Resonance (NMR) and XRD analyses. From these analyses, activating solution R3 was deemed optimal. The formulation of geopolymer mortars using MK and three activator sources: The optimized activating solution from RWG (R3), Commercial Sodium Silicate solution (CSS) and a reference activator formed by NaOH with RWG blended with the MK to obtain the same molar ratios in the geopolymer mixture. The mechanical and environmental performance results both highlight the interest of dissolving the RWG in NaOH first before insertion into the matrix. This study shows that treated glass R3 becomes an activating solution with good reactivity for obtaining a geopolymer binder and enhanced properties compared to the CSS source.
Abdelhadi Bouchikhi; Yannick Mamindy-Pajany; Walid Maherzi; Cyrille Albert-Mercier; Hamza El-Moueden; Mahfoud Benzerzour; Arne Peys; Nor-Edine Abriak. Use of residual waste glass in an alkali-activated binder – Structural characterization, environmental leaching behavior and comparison of reactivity. Journal of Building Engineering 2020, 34, 101903 .
AMA StyleAbdelhadi Bouchikhi, Yannick Mamindy-Pajany, Walid Maherzi, Cyrille Albert-Mercier, Hamza El-Moueden, Mahfoud Benzerzour, Arne Peys, Nor-Edine Abriak. Use of residual waste glass in an alkali-activated binder – Structural characterization, environmental leaching behavior and comparison of reactivity. Journal of Building Engineering. 2020; 34 ():101903.
Chicago/Turabian StyleAbdelhadi Bouchikhi; Yannick Mamindy-Pajany; Walid Maherzi; Cyrille Albert-Mercier; Hamza El-Moueden; Mahfoud Benzerzour; Arne Peys; Nor-Edine Abriak. 2020. "Use of residual waste glass in an alkali-activated binder – Structural characterization, environmental leaching behavior and comparison of reactivity." Journal of Building Engineering 34, no. : 101903.
This paper deals with glass packaging and especially with different types of wastes from its recycling (Valued Product (VP), End-of-Wash Waste (EWW) and Optical Sorting (OS)), in order to make a comparative study of their pozzolanic activity and leaching behaviour for an environmental study. VP is used by industrials in the production of new packaging glass, and EWW and OS are residues which are not currently valued, so considered as undesirable parts. First of all, these three materials have been crushed to obtain a homogeneous particle-size distribution (with d50 = 6.5 µm). Then, they have been physically and chemically characterized by helium pycnometer (absolute density), gas adsorption method (specific surface), X-ray crystallography and X-ray Fluorescence for chemical composition. The second step of this study involves making 4 × 4 × 16 cm specimens according to standard NF EN 196-1 in order to compare a reference mortar (RM) with 100% of cement 42.5 R with samples including the three types of waste glass (VP, EWW and OS) in partial substitution of cement. Leaching tests performed on these wastes according to standard NF EN 12457-2 allowed to highlight a correlation between mobility of silicon, aluminium and calcium, and the mechanical performances obtained. Finally, SEM observations and study of cement paste in fresh state allowed to give an explanation of the results observed in macroscopic scale.
Abdelhadi Bouchikhi; Mahfoud Benzerzour; Nor-Edine Abriak; Walid Maherzi; Yannick Mamindy-Pajany. Study of the impact of waste glasses types on pozzolanic activity of cementitious matrix. Construction and Building Materials 2018, 197, 626 -640.
AMA StyleAbdelhadi Bouchikhi, Mahfoud Benzerzour, Nor-Edine Abriak, Walid Maherzi, Yannick Mamindy-Pajany. Study of the impact of waste glasses types on pozzolanic activity of cementitious matrix. Construction and Building Materials. 2018; 197 ():626-640.
Chicago/Turabian StyleAbdelhadi Bouchikhi; Mahfoud Benzerzour; Nor-Edine Abriak; Walid Maherzi; Yannick Mamindy-Pajany. 2018. "Study of the impact of waste glasses types on pozzolanic activity of cementitious matrix." Construction and Building Materials 197, no. : 626-640.
Nanotechnology is all about making products from very small constituents, components or subsystems to gain greatly enhanced material properties and functionality. Nanocrystalline anatase TiO2 was prepared by a facile sol–gel route at a temperature of 50°C under mild conditions. Titanium tetraisopropoxide (TTIP) was used as a titanium precursor, and 2-propanol was used as a solvent. XRD, TEM, SEM, FT-IR and BET were applied to characterize the crystal phase. The Crystalline size of TiO2 powder has been obtained with diameter < 30 nm for anatase at 500°C using an acid.
W. Nachit; S. Touhtouh; Z. Ramzi; M. Zbair; A. Eddiai; M. Rguiti; A. Bouchikhi; A. Hajjaji; K. Benkhouja. Synthesis of nanosized TiO2powder by sol gel method at low temperature. Molecular Crystals and Liquid Crystals 2016, 627, 170 -175.
AMA StyleW. Nachit, S. Touhtouh, Z. Ramzi, M. Zbair, A. Eddiai, M. Rguiti, A. Bouchikhi, A. Hajjaji, K. Benkhouja. Synthesis of nanosized TiO2powder by sol gel method at low temperature. Molecular Crystals and Liquid Crystals. 2016; 627 (1):170-175.
Chicago/Turabian StyleW. Nachit; S. Touhtouh; Z. Ramzi; M. Zbair; A. Eddiai; M. Rguiti; A. Bouchikhi; A. Hajjaji; K. Benkhouja. 2016. "Synthesis of nanosized TiO2powder by sol gel method at low temperature." Molecular Crystals and Liquid Crystals 627, no. 1: 170-175.