Abstract
This chapter focuses on the process of material loading due to solid particle impingement, stresses due to particle impingement, material response to particle impingement, and formation of radial and lateral cracks. It also discusses formation, structure and properties of hydro-abrasive water jets, which are formed by accelerating small solid particles (garnet, aluminum oxide, silica carbide) through contact with one or more high-speed water jets; and the two types of hydro-abrasive jets—that is, injection jets and suspension jets. As far as process optimization is concerned, the chapter elucidates process and target parameters, nozzle diameter effects, abrasive mass flow rate effects, stand-off distance effects, traverse rate effects, impact angle effects, focus geometry effects, abrasive particle size effects, and abrasive particle shape and hardness effects. The chapter describes the process of demolition of concrete and reinforced concrete structures, detailing the assessment scheme for demolition methods for reinforced concrete, and effects of concrete parameters on depth of cut in abrasive water jet cutting.
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