نتایج جستجو برای: cement boards
تعداد نتایج: 39355 فیلتر نتایج به سال:
Abstract The article attempts to assess the possibility of using non-woven fabrics made waste fibers in cladding panels. For this purpose, woolen and polypropylene nonwovens were tested for mass per unit area, characteristic opening size, lengthwise crosswise elongation at maximum strength. Non-woven placed middle thickness cement gypsum boards subjected tests density, thermal conductivity coef...
For any odd integer n≥3 a board (of size n) is square array of n×n positions with simple rule how to move between positions. The goal the game we introduce find path from upper left corner center square. If there exists such say that solvable, and length this shortest path. There are 8n2 different boards. We discuss various properties these boards present some questions conjectures. In particul...
background the critical role that the board plays in governance of universities clarifies the necessity of evaluating its performance. this study was aimed to evaluate the performance of the boards of medical universities and provide solutions to enhance its performance. methods the first phase of present study was a qualitative research in which data were collected through face-to-face semi-...
the effect of the filler content and the different type of wood flour on the mechanical properties of polyethylene- date palm wood flour (dpwf) composite which are gathered from date palm tree annual pruning was studied. the different types of dpwf were stem, leaf and the mixture of stem and leaf. composites were made at 45, 60 and 75 % by weight filler contents. the particle size was 25-40 mes...
Bio-aggregate composites (BACs) are typically formed by binding plant origin aggregates using organic or inorganic binders. Composite boards being manufactured from hemp shives and Portland cement lime such material is associated with the so-called “hempcrete”. To reach a low greenhouse gas emission rate, alternative binders must be considered. Gypsum binder releases seven times lower amount of...
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