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...

Cut blasting is one of the most essential processes to reduce blast-induced vibration in tunnel blasting. The long and large-diameter uncharged hole boring (LLB) method an example cut methods, which utilizes holes drilled face. In this study, simulations were performed analyze its mechanism, LLB traditional burn-cut simulated compare their efficiency. A 3D numerical analysis using LS-DYNA code,...

Blasting has been proven to be the most cost-effective method for rock excavation known man. The cost-effectiveness advantage of blasting is overshadowed by its unpleasant environmental problems, particularly at construction sites close human settlements and public utilities. Therefore, efforts are required develop closed-form equations that can accurately predict problems associated with blast...

When combined with high-speed photography technology, the digital image correlation (DIC) method provides an excellent photographic processing capability that can be used to convert evolving full-field surface properties of structures sets two-dimensional (2D) or three-dimensional (3D) coordinate values. In this study, applicability DIC and cameras in underground mining was investigated by meas...

Stress waves affect the stress field at crack tip and dominate dynamic propagation. Therefore, evaluating influence of blasting on propagation behavior mechanical characteristics is great significance for engineering blasting. In this study, ANSYS/LS-DYNA was used numerical simulation, in which distribution were closely observed. Moreover, ABAQUS applied simulating path calculating intensity fa...