نتایج جستجو برای: الیاف hfrp

تعداد نتایج: 4809  

پایان نامه :وزارت علوم، تحقیقات و فناوری - موسسه آموزش عالی غیر انتفاعی و غیر دولتی شمال - آم - دانشکده مهندسی عمران 1389

تیرهای‏عمیق در سازه‏های مختلف از جمله ساختمان‏های بلند مرتبه، دیوارهای‏برشی و پل ها بسیار مورد توجه می‏باشند. به‏دلیل پیچیدگی رفتار این تیرها، آیین‏نامه‏های موجود در تعریف آن وحدت نظر ندارند. در تیرهای عمیق بازشوهای جان به‏عنوان تأمین نیازهای دسترسی همانند در، پنجره و یا خدمات اضطراری مانند داکت‏های تهویه هوا و خدمات آتش‏نشانی ضروری می‏باشند. به‏دلیل کاهش مقاومت سازه‏ها بنا به دلایل ذکر شده، تغ...

Journal: :JCP 2012
Jianzhi Li Yanliang Du Baochen Sun

Intelligent hybrid reinforced plastics (IHFRP) with fiber Bragg grating (FBG) sensors embedded in the HFRP were produced in-situ. The FBG/HFRP interface bonding is discussed. Experimental results show that the interfacial bonding of FBG/HFRP is good, which ensures that it can transfer the external load to the FBG sensor well. The novel IHFRP has a higher strain-testing precision compared to the...

Journal: :International Journal of Concrete Structures and Materials 2023

Abstract The replacement of synthetic fibers with natural in concrete has been recently investigated to counter the growing environmental and sustainable issues. Hemp are environmentally friendly used manufacturing composite materials. This paper reports on experimental assessment using hemp fiber reinforced polymer (HFRP) fabric sheets as an alternative carbon (CFRP) strengthen interior slab-c...

Journal: :MATEC Web of Conferences 2018

Journal: :E3S web of conferences 2021

This paper present the experimental result of flexural behavior Hybrid Fiber Reinforced Polymer (HFRP) concrete beams reinforced with Glass (GFRP) rebars and steel bars. experiment is conducted aim replacing reinforcement GFRP to reduce risk corrosion in structures. The data presented this study obtained by conducting test on four HFRP various PVA fibre dosage 0%, 0.25% 0.5% one Pure FRP beam. ...

2008

1 Harvard Family Research Project’s (HFRP) Issues and Opportunities in Out-of-School Time Evaluation briefs highlight current research and evaluation work in the out-ofschool time field. These documents draw on HFRP’s research work in out-of-school time to provide practitioners, funders, evaluators, and policymakers with information to help them in their work. This brief looks at 10 years of re...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :Journal of Wood Science 2023

Abstract Long timber columns are widely used in traditional structures worldwide; however, many of them possess bearing capacity issues and have to be strengthened. The current study aims develop the novel Hybrid fiber reinforced polymers (HFRP) sheets suitable for long columns. In first stage, six HFRP were designed, evaluation these was carried out by tensile tests Scanning electron microscop...

Journal: :Buildings 2023

The strengthening of steel beams using hybrid fiber-reinforced polymers (HFRPs) has gained enormous attention over the last decades. Few researchers have investigated effectiveness fastening techniques without a bonding agent to overcome undesirable debonding failure bonded FRP–steel system. This paper reports outcomes experimental and numerical investigations conducted on strengthened by HFRP ...

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