Thickening is the first step in the design of sustainable (cost effective, environmentally friendly, and socially viable) tailings management solutions for surface deposition, mine backfilling, and sub-aqueous discharge. The high water content slurries are converted to materials with superior dewatering properties by adding long-chain synthetic polymers. Given the solid and liquid composition o...

Portland Cement Pervious Concrete (PCPC) is becoming more utilized across the U.S. due to increased requirements for stormwater management. This paper details the experience of the installation of a PCPC test section/parking area in Sioux City, Iowa. In order to evaluate a large number of mixture designs, the test section incorporated five different mixtures, each placed with and without air en...

Void-free Cu electrodeposition in high aspect ratio features requires, at a minimum, an additive package containing micromolar halide and polyether that combine to form co-adsorbed adlayer inhibits metal deposition on the electrode interface. Successful feature filling relies preferential growth proceeding from most recessed surfaces where sustained breakdown of polyether-halide suppressor laye...

This paper aims to investigate the influence of inhomogeneous radiation in void formation. Since the process of void formation is non–linear, a fully relativistic model, which simulates the evolution of voids from the moment of the last scattering until the present instant, is presented. It is found that in order to obtain a model of a void which evolves from δ0 = −10 −5 at the last scattering ...

The subject of this study is the modeling of the evolution of the swelling pressure of granulates with cohesive-frictional, rough and elasto-plastic “microscopic” contact properties. The spherical particles are randomly arranged in a periodic cubic space with a fixed volume so that an increase of the particle size – i.e. swelling that can be caused by intake of some fluid – is accompanied by a ...