Dry-ice particle blasting is similar to sand blasting, plastic bead blasting, or soda blasting where a media is accelerated in a pressurized air stream (or other inert gas) to impact the surface to be cleaned or prepared. With dry-ice blasting, the media that impacts the surface is solid carbon dioxide (CO2) particles. One unique aspect of using dry-ice particles as a blast media is that the pa...

Safety-critical systems rely on various forms of machine arithmetic to perform their tasks: integer arithmetic, fixed-point arithmetic or floating-point arithmetic. Machine arithmetic can exhibit subtle differences in behavior compared to the ideal mathematical arithmetic, due to fixed-size of representation in memory. Failure of safety-critical systems is unacceptable, because it can cost live...

Exposure data on biocides are relatively rare in published literature, especially for secondary exposure. This is also the case for antifouling exposure. Therefore, a field study was carried out measuring exposure to antifouling paints. Both primary exposure (rolling and spraying) and secondary exposure (during sand blasting) were studied. Exposure during rolling was measured in boatyards where...

UNLABELLED The purpose of this study was to evaluate and compare the effect of grit blasting, chemical treatment, and application of alloy primer combinations on the shear bond strength (SBS) of a self-cure resin cement to titanium surface. MATERIALS AND METHODS Fifty cast commercially pure titanium discs (9 mm × 2 mm) were divided into five groups (n = 10), which received the following surfa...

By evaluation of the blasting results, a proper blast pattern can be presented. It is, therefore, essential to employ a reliable method to evaluate blastings for the effective control and optimization of the main cycle operations. This paper aims to propose a criterion for evaluating the blasting results such as the fragmentation, muckpile condition, back-break, and fly rock, and to make a poss...

The removal of rock masses or their use with surface exploitation requires that this work be done at the lowest possible cost. reduction operating costs is by analyzing each action, working method, and possibility changing them, to have an impact on reducing costs. drilling angle one most important factors during blasting. By angle, we achieve a total length, amount explosives other changes bla...

This paper presents the effect of selected parameters of abrasive blasting on the strength of a joint between dental porcelain and metal base. Experiments were conducted for different grain sizes of abrasive material and different blasting angles, with a constant blasting pressure. InLine dental porcelain was fused on samples of cobalt-chromium alloy following abrasive blasting; they were subse...

Pliant abrasive media is transforming the way coating maintenance personnel approach offshore surface preparation. Pliant media users are often able to lower total job costs and provide higher quality surface preparation. 29(59,(:#2)#2))6+25(#0$,17(1$1&( Millions of dollars are being allocated toward the maintenance of offshore platforms with the goal to maximize oil production operations. A mo...

Ground vibration is one of the undesirable results of blasting operations. Different methods have been proposed to predict and control ground vibration that is caused by blasting. These methods can be classified as laboratory studies, fieldwork and numerical modeling. Among these methods, numerical modeling is the one which saves time and cuts costs since it takes into account the basic princip...

Drilling and blasting play a very important role in driving the economy of opencast mines, as various mining activities related to strata handling are dependent on size rock mass created due blasting. Thus analysis fragments from explosion is essential order monitor its compatibility with deployed machineries/HEMMs (such shovel, dumper, dragline, etc.). As over fragmentation well under both ten...