Hydraulic structures are exploited in hard environmental conditions (impact of freeze-thaw cycling, ultraviolet, humidity and drying, acidity or salinity water, abrasion etc.), so due to the impact factors some deteriorations will occur. The repeated cycles freezing thawing have significant effects on durability concrete. They reducing durability, because cracking scaling Using research results...

CLINICAL QUESTION What is the best treatment for traumatic corneal abrasion? RESULTS Eye patching does not reduce pain in patients with corneal abrasions. Topical diclofenac does reduce pain in patients with corneal abrasions IMPLEMENTATION Pitfalls to avoid when treating abrasions: Treatment of small abrasions Treatment of larger abrasions When to refer for specialist treatment.

Steel slag and ground blast furnace show good wear resistance, which is suitable for improving the abrasion performance of pavement concrete. This work presents an investigation activation Na2SO4, Na2CO3 Na2SiO3 on GBFS-SS composite The results showed that both Na2SO4 can promote strength development cementitious system. shows limited improvement in paste. paste activated with combination hydra...

Context: Nanocomposites are becoming popular today because of the manufacturers claiming high surface smoothness and good abrasion resistance properties thus improving the longevity of the restoration. Aims: This in vitro study was carried out to investigate the effect of nanofillers on surface roughness and abrasion resistance of nanofilled compositeFiltek Z350 (3M ESPE) and nanohybrid composi...

Recycling end-of-life tires is a global problem that requires an urgent solution. Storing and preserving these challenge delays facing potential problems instead of solving the problem. In this context, recycling waste without harming environment at low costs has been focus many researchers. For several decades, possibility grinding to aggregate size for concrete substituting them with natural ...

PURPOSE This study was conducted to evaluate the effects of different phosphate monomer-containing primers on the shear bond strength between yttria-tetragonal zirconia polycrystal (Y-TZP) ceramics and MDP-containing self-adhesive resin cement. MATERIALS AND METHODS Y-TZP ceramic surfaces were ground flat with #600-grit SiC paper and divided into six groups (n = 10). They were treated as foll...

Abrasion dusts from three types of commercially available non-steel brake pads were generated by a brake dynamometer at disk temperatures of 200, 300 and 400 1C. The number concentration of the abrasion dusts and their aerodynamic diameters (Dp) were measured by using an aerodynamic particle sizer (APS) spectrometer with high temporal and size resolution. Simultaneously, the abrasion dusts were...