نتایج جستجو برای: prestressed concrete
تعداد نتایج: 76851 فیلتر نتایج به سال:
Prestressed concrete (PSC) is one of the most reliable, durable and widely used construction materials, which overcomes the weakness of concrete in tension by the introduction of a prestress force. Smart strands enabling measurement of the prestress force have recently been developed to maintain PSC structures throughout their lifetime. However, the smart strand cannot give a representative ind...
FOREWORD Salt-induced reinforcing steel corrosion in concrete bridges has undoubtedly become a considerable economic burden to many State and local transportation agencies. Since the iron in the steel has a natural tendency to revert eventually to its most stable oxide state, this problem will, unfortunately, still be with us, but to a much lesser degree due to the use of various corrosion prot...
Externally bonded carbon fiber reinforced polymer (CFRP) laminates are a feasible and economical alternative to traditional methods for strengthening and stiffening deficient reinforced concrete and prestressed concrete girders as shown in Fig. (1). Although extensive research has already been undertaken to investigate the behavior of CFRP strengthened bridge girders, the majority of work condu...
Selecting appropriate bonding technique is crucial for strengthening and repairing concrete structures as different bonding techniques have different performances. A state-of–the-art review of different bonding techniques that is epoxy bonding technique, prestressed strengthening technique, unbonded anchored technique/mechanically fastened technique using CFRP is dealt and the corresponding adv...
In this study, impact test was carried out to assess the condition of prestressed concrete cylinder pipe (PCCP). The impulse response of the test is modeled with system identification approaches. The model of the impulse response can be further used to characterize the deterioration of PCCP. This paper presents preliminary results on the comparison of different models for the response of impact...
................................................................................................................................. i Dedication........................................................................................................................... iii Acknowledgements............................................................................................................. i...
The Beddington Trail/Centre Street, Calgary, Alberta, Canada, is the first prestressed concrete highway bridge built in Canada pretensioned by Carbon Fiber Reinforced Plastic, FRP, tendons. It is also the first bridge which has utilized a structurally integrated optical sensors system to monitor the behaviour. The bridge is completed and was opened to traffic on November 5, 1993. The project in...
Page 1 UT students placed very well in the 2012 Big Beam Contest, with one team earning first place in the Zone 2 and national competitions. The Big Beam Contest is organized by the Precast/ Prestressed Concrete Institute's (PCI) Student Education Committee, and sponsored by Sika Corp. The contest consists of a zone competition and a national competition. First place winners of each zone, along...
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