Novel Steel Reinforcement Polymer (SRP)

这项研究旨在开发一种新型的、低成本的复合材料，用于加固和升级钢筋混凝土和预应力混凝土构件。建议的复合材料旨在保持和改进FRP系统的性能和安装优势，同时显著降低其成本。这种新型复合材料是由高强度钢帘线浸渍在聚合物树脂基质中组成的，被称为SRP，即钢铁增强聚合物。钢帘线是一种用于子午线轮胎制造行业的商品产品，具有碳纤维的强度和硬度，而成本只有它的一小部分。为了支持这种新型低成本复合材料的发展，研究计划包括以下两项任务：(1)建立材料本构关系，(2)进行试验和分析研究，以证实SRP用于加固RC和PC结构构件的可行性。在本研究的结论下，SRP复合材料可以在现场进行示范。一些基本问题，如长期耐久性，还需要进一步研究，但现阶段仍需进行现场示范。该项目还将整合到一个强有力的教育和技术转移计划中，并将本科生和研究生纳入项目的每个阶段。此外，UMR还拥有一个NSF行业合作研究中心，负责桥梁和建筑物的复合材料改造和维修，潜在的产品制造商和一家领先的混凝土维修承包商将直接参与这一研究项目，以便系统地解决技术转让的所有方面。

The proposed research explores the development of a novel, low cost composite material aimed atthe strengthening and upgrading of reinforced and prestressed concrete members. The proposedcomposite material intends to maintain and improve on the performance and installation advantages ofFRP systems, while significantly reducing their cost. This new composite material is composed of aknitted high-strength steel cord impregnated in a polymeric resin matrix and is called SRP, for steelreinforced polymer. The steel cord, a commodity product used in the radial tire manufacturing industry,has the strength and stiffness of carbon fiber at a fraction of its cost. To support the development of thisnovel, low cost composite material, the research program consists of the following two tasks; (1) Developthe material constitutive relations, and (2) Conduct experimental and analytical studies that cansubstantiate the feasibility of SRP for implementation into the strengthening of RC and PCstructural members. At the conclusion of this research, the SRP composite could be ready fordemonstration in the field. Some of the fundamental issues such as long-term durability wouldneed further study, but field demonstration will still be warranted at this phase.This project will also be integrated within a strong education and technology transferprogram, and will involve undergraduate and graduate students in every phase of the project. Inaddition, UMR is home to an NSF industry cooperation research center that deals with theretrofit and repair of bridges and buildings with composites, and potential manufacturers of theproduct and a leading concrete repair contractor will be directly involved in this research projectso that all aspects of technology transfer are addressed in a systematic manner.