Fiber Reinforced Polymer Composites for Infrastructure Strengthening - From Research to Practice
نویسنده
چکیده
This paper focuses on the use of emerging technologies for the upgrade of the transportation infrastructure. A number of bridge rehabilitation projects conducted in the State of Missouri in the last three years were selected for presentation. The review is limited to bridge superstructure strengthening to correct flexure and shear deficiencies in non-seismic applications. Strengthening of concrete members with externally bonded fiber reinforced polymer (FRP) laminates or near surface mounted (NSM) bars has received remarkable attention. The design and construction principles for use in practice have been finalized by the American Concrete Institute (ACI). On the application side, FRP materials have been used in some multi-million dollar projects for strengthening bridges, parking garages, multi-purpose convention centers, office buildings and silos. The drivers for this technology are several, but perhaps the most relevant ones are the ease and speed of installation. In the repair/upgrade arena, one of the most important unresolved questions remains that of durability. Addressing this issue will increase the degree of confidence in the technology and allow for its full exploitation.
منابع مشابه
Study on an Improved Phosphate Cement Binder for the Development of Fiber-Reinforced Inorganic Polymer Composites
Magnesium phosphate cement (MPC) has been proven to be a very good repair material for deteriorated concrete structures. It has excellent adhesion performance, leading to high bonding strength with old concrete substrates. This paper presents an experimental study into the properties of MPC binder as the matrix of carbon fiber sheets to form fiber-reinforced inorganic polymer (FRIP) composites....
متن کاملExperimental Strengthening of the Two-way Reinforced Concrete Slabs with High Performance Fiber Reinforced Cement Composites Prefabricated Sheets
Reinforced concrete structures need to be strengthened and retrofitted for various reasons, including errors during design and/or construction, so in most cases strengthening of structural elements is much more economical than rebuilding the structure. Using HPFRCC with tensile stiffening behavior has been developed to strengthen the concrete structures over the recent few years. In this paper,...
متن کاملAnalysis of Milling Process Parameters and their Influence on Glass Fiber Reinforced Polymer Composites (RESEARCH NOTE)
Milling of fiber reinforced polymer composites is of great importance for integrated composites with other mating parts. Improper selection of cutting process parameters, excessive cutting forces and other machining conditions would result in rejection of components. Therefore, machining conditions are optimized to reduce the machining forces and damages. This work reports practical experiments...
متن کاملIntroducing A New Mathematical Model and Developing A Computer Package For 3-D Machining of Fiber Reinforced Polymer Composites
Due to the widespread applications of fiber reinforced polymer composites in various industries, the machining of these materials to reach the desired shapes, close tolerances and surface finish quality is of great importance. But the composite materials are anisotropic and are mostly prepared in laminated form and, therefore, they have special chip formation behaviour. Among the effective para...
متن کاملFRP for Transportation and Civil Engineering Infrastructure: Reality and Vision
This paper reviews the reality and vision of the use of fiber reinforced polymer (FRP) composite materials in civil engineering and transportation infrastructure applications. Due to their superior characteristics these materials have become a commonly accepted construction material for both new construction and for rehabilitation and strengthening of existing bridges and structures. This paper...
متن کامل