Recycled materials like Bauxite Residue (Red Mud) and Fly Ash are prevalent in recent feasibility studies on reused geotechnical engineering applications. Red Mud is a mining waste from aluminum manufacturing, by-product of coal combustion power plants. Nevertheless, to fully reveal the using those for constructing above-ground earth structures, better understanding their unsaturated performanc...

Brick is one of the most common masonry units as a building material due to its properties. Many attempts have been made to incorporate wastes into the production of bricks, for examples, rubber, limestone dust, wood sawdust, processed waste tea, fly ash, polystyrene and sludge. Recycling such wastes by incorporating them into building materials is a practical solution for pollution problem. Th...

This study proposed a novel headspace gas chromatographic (HS-GC) method for determination of adhesive contaminants (microstickies) in recycled whitewater, a fiber containing process stream, in the paper mill. It is based on the adsorption behavior of toluene (as a tracer) on the hydrophobic surface of microstickies, which affects the apparent vapor-liquid equilibration partitioning of toluene....

A repertory of Roman military bronze equipment (1st- 3rd century AD) found at the archaeological site of Thamusida (Rabat, Morocco) was analysed by non-destructive X-ray fluorescence and time of flight neutron diffraction (ToF-ND). Most objects are made of leaded alloys, where copper is combined with tin and/or zinc and, in six cases, to arsenic as well. A mixed technology was employed, making ...

In the last few decades, geopolymer concrete presented an evolution in civil engineering field. The current study aims to produce a low cost steel fiber reinforced with ecceptable tensile properties. experimental program investigate behaviour of and made recycled materials. primary ingredients this were waste was extracted from tires chopped into tiny fibers average length 20 mm diameter 0.7 mm...

This paper examines a Waste Management Organisation's (WMO) pricing options to implement the Pareto-efficient allocation in an economy where materials are first extracted, then used for producing a consumption good and finally recycled or landfilled. The WMO is established by the producers who are responsible for the proper disposal of consumption waste which consists of a mix of materials. Tha...

This paper uses variational inequalities to model an oligopolistic closed-loop supply chain engaged in a Cournot pricing game. The manufacturers produce a homogenous product for a set of customer markets. The product can be comprised of both virgin materials and recycled materials obtained from used products returned by the customers. Society is modelled as an additional player whose objective ...