详情

Exploring Fiber-Reinforced Polymer Concrete for Accelerated Bridge Construction Applications

项目名称：	Exploring Fiber-Reinforced Polymer Concrete for Accelerated Bridge Construction Applications
摘要：	The use of precast concrete superstructure elements can expedite project delivery, improve work-zone safety, and reduce overall project cost. To accelerate construction, the precast elements must be connected quickly on-site, ideally using as little additional material as possible. While the excellent tension and bond strengths of ultra-high performance concrete (UHPC) make it ideal for this purpose, the time at which UHPC achieves its design strength is directly proportional to the rate of hydration of the cementitious binder. While UHPC may provide the best solution in many instances, alternative joint materials that utilize polymer binders, instead of cementitious ones, may be more suitable if rapid strength gain is needed. This project explores a potential alternative closure joint material, fiber-reinforced polymer concrete (FRPC), which displays levels of the two critical characteristics (bond and tension strength) that are comparable to, or potentially better than, those of UHPC. FRPC has the advantage of requiring shorter closure windows (approximately 4 hours versus 72 hours of UHPC) due to the very rapid strength gain of the polymer, which could be ideal for overnight construction or rehabilitation projects, and provides an additional option to the engineer and contractor when choosing a closure joint material for a given circumstance.
状态：	Active
资金：	70000
资助组织：	Accelerated Bridge Construction University Transportation Center (ABC-UTC)<==>University of Washington, Seattle<==>Office of the Assistant Secretary for Research and Technology
开始时间：	20210201
预计完成日期：	20210331
主题领域：	Bridges and other structures；Construction；Highways；Materials