نتایج جستجو برای: ورق frp
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Functional Reactive Programming (FRP) is an approach to reactive programming where systems are structured as networks of functions operating on time-varying values (signals). FRP is based on the synchronous data-flow paradigm and supports both continuous-time and discretetime signals (hybrid systems). What sets FRP apart from most other reactive languages is its support for systems with highly ...
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This paper presents a study that forms part of an ongoing project on the seismic retrofit of reinforced concrete (RC) structures with fibre-reinforced polymer (FRP). In this study, a stress-strain model for FRP-confined concrete subjected to cyclic loading was implemented into OpenSees to support the performance-based design of FRP jackets for the seismic retrofit of RC columns/structures. Init...
We introduce a new reflection principle which we call “Fodor-type Reflection Principle” (FRP). This principle follows from but is strictly weaker than Fleissner’s Axiom R. For instance, FRP does not impose any restriction on the size of the continuum, while Axiom R implies that the continuum has size ≤ א2. We show that FRP implies that every locally separable countably tight topological space X...
Stackable gels comprised of layers of dissimilar polymers were synthesized by combining conventional free radical polymerization (FRP) and atom transfer radical polymerization (ATRP) using two approaches: (i) polymerization of a pre-gel solution containing a monomer and cross-linker introduced on top of a previously prepared gel, and (ii) simultaneous polymerization of two immiscible pre-gel so...
Corrosion of steel reinforcement in an aggressive environment constitutes a serious problem for many reinforced concrete (RC) structures. Fiber-reinforced polymers (FRP) rebars represent a potential solution to this situation. Even if FRP reinforcement shows a good resistance to electro-chemical corrosion, long-term behavior must be investigated and proven. The mechanical properties of FRP rods...
لولههای مدفون تحت فشار، برای انتقال آب، جمع آوری فاضلاب و دیگر موارد در سطح جهان کاربردی وسیع دارند. از این خطوط به عنوان شریان های حیاتی شهری یاد می شود و خسارت به هر بخش از آن ها، هزینه های هنگفتی را در بر خواهد داشت. فرسودگی تدریجی و مدفون بودن این لوله ها، سبب خوردگی و پوسیدگی دیواره ها شده و در نتیجه خسارت های جبران ناپذیری را به همراه خواهد داشت. بازسازی این زیرساخت های حیاتی مستلزم صرف ه...
Recent research has focused on rehabilhation and strengthening of steel structures and bridges using fiber reinforced polymer (FRP) materials. The bond behavior of FRP materials to steel structures is quite different from lhat of concrete structures. Preliminary test results showed the occurrence of very high bond stresses for most strengthening applications due to the amount of strengthening r...
There is a growing need for the rehabilitation, repair, and upgrading of concrete structures such as bridges and buildings. The repair or rehabilitation of reinforced concrete structures often offers a lower cost alternative to rebuilding, and it is traditionally achieved by bonding steel plates to the tensile face of a reinforced concrete member. The shear strength can be enhanced with plates ...
امروزه استفاده از پلیمر های مسلح شده با فیبر (frp) برای تقویت و مقاوم سازی سازه های بتن آرمه به عنوان روشی متداول و مرسوم در بحث مقاوم سازی سازه ها تبدیل شده است. از این جمله تقویت تیر های بتن آرمه به عنوان عنصر مهم سازه ای یکی از موارد مهم این نوع تقویت می باشد. تقویت خمشی تیر های بتنی مسلح با ورق ها و میلگرد های طولی frp در وجه کششی یکی از موارد پر کاربرد این بحث می باشد. علی رغم مزایای متعدد...
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