نتایج جستجو برای: stone and cement
تعداد نتایج: 16840488 فیلتر نتایج به سال:
How Much Bone Cement Is Utilized for Component Fixation in Primary Cemented Total Knee Arthroplasty?
Background: No scientific evidence exists regarding the amount of bone cement used and discarded in primarycemented Total knee arthroplasty (TKA). The aim of this study was to identify the exact amount of bone cement utilizedfor component fixation in primary TKA.Methods: In a prospective study carried out at five centers, 133 primary cemented TKAs were performed. One packof 40g Palacos bone cem...
The article presents research of the influence electromagnetic vortex layer on structure formation cement stone during activation portland cement, both without additives and with carbon nanotubes modification. It has been shown that storage powders in open air for 60 days after mill leads to partial carbonization, wherein role absorption reducing super plasticizer additive is increased since th...
Background: Although one of the most important occupational hazards in cement industry is the effect of cement dust exposure on respiratory system, there is controversy about the relationship between exposure to cement dust and respiratory symptoms and pulmonary function impairment. Our aim was to assess the effects of cement dust exposure on respiratory symptoms and lung capacities of cement w...
The chemical-mineralogical compositions and physic-chemical properties of slag waste from the Angren TPP Uzmetkombinat JSC were determined. A Conclusion was issued on their suitability for use as additives in cement possibility using them producing new types hybrid production composite Portland cements. With different combinations ratios clinker, natural gypsum stone, additives, cements obtaine...
In order to improve the impermeability of ordinary “cement–water glass” double-liquid grouting material, this study prepares a composite material with sodium bentonite, cement, and water glass as main materials, water-reducing agent, early strength agent activators. study, orthogonal tests were conducted using an L16(45) table test results analyzed regression analysis. Using bentonite instead p...
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