In the mid 1990's the FHWA established a High Performance Concrete (HPC) program aimed at demonstrating the positive effects of utilizing HPC in bridges. Research on the benefits of using high performance concrete for bridges has shown a number of benefits. These include increased span capacities, or wider girder spacings (and hence a fewer number of girders); increased concrete compressive and...

Abstract External prestressing tendons are a major structural element for the durability of concrete bridges. In France several cases sudden breaks in external pre‐stressing tendon made HDPE duct injected by cement grout directly contact with strands have been recorded past decade [2]. order to prevent this Cerema has experimented magnetic rope testing technology from ropeways develop non‐destr...

• Prestressing levels providing different of pre-cambering are determined. Sensitivity to imperfections in conjunction with studied. Optimal prestressing found maximize structural efficiency for ultimate behaviour. Doubly-symmetric arrangements perform better no pre-cambering. Mono-symmetric upward The behaviour and performance imperfect beam-columns crossarms externally prestressed cable stays...

Punching shear is the most common failure mechanism of slabs that are supported directly on columns. The slab–column connection always vulnerable to critical punching shear; thus, it necessary investigate effect various parameters behavior flat slabs. This work presents an experimental study evaluate level prestressing force and layout strands in terms maximum load, deflection, stiffness, ducti...

A partial connection–prestressing (PCP) method is proposed in this paper to decrease the prestress that was transferred steel girders negative moment region of steel–concrete composite bridges. The connection achieved by application rubber-sleeved studs (RSS) prestressed concrete slab region. Since there no experimental research on PCP continuous girders, best authors’ knowledge, two were teste...