Development of Novel Repair Technology for Deteriorated Bridge Components******

Facca Inc.在重型民用建筑方面有60年的经验，专门从事桥梁建设，但已涉足建筑行业的不同领域。公司通过雇佣和支持积极、灵活和安全驱动的团队，按时交付高质量的产品和项目。最近，该公司正在关注使用新兴的高性能纤维增强工程胶凝复合材料（ECC）代替传统混凝土进行桥梁基础设施修复的巨大前景。由于持续磨损以及时间依赖性和环境效应而损坏的桥梁结构的修复和修复是大量钢筋混凝土和预应力混凝土桥梁结构所关注的主要问题。每年，在北美，数十亿美元用于修复和维护桥梁。随着用于基础设施维护、修复和更换的预算拨款减少，显然需要更大的耐久性。高应变能力（比普通混凝土大300至500倍）和耐久性（保持裂缝宽度小于60微米）使可流动ECC成为理想的建筑材料。鉴于全球对基础设施系统的需求，ECC在新建筑或作为维修材料中的潜在应用是巨大的。建筑工程中基于ecc的修复是一项新兴技术。这种技术的实施可以提高桥梁结构的强度、耐久性、延展性和使用寿命，也可以解决传统混凝土维修相关的问题。拟议的研究项目由Facca发起，旨在开发基于ecc的桥梁桥墩修复技术。本研究的主要目的是研究ecc修复的退化RC桥墩在静态单调荷载下的轴向荷载行为，并与未退化的桥墩进行比较，并制定ecc修复桥墩的设计规范。考虑到加拿大和全球市场对新兴ecc维修技术的未来前景和需求，Facca可以通过这一发展在建筑行业获得竞争优势（从而增加收入和创造就业机会）

Facca Inc. has 60 years of experience in heavy civil construction, specializing in bridge construction, but having branched into different sectors of the construction industry. The Company delivers quality products and projects on schedule by employing and supporting motivated, flexible and safety-driven teams. Recently, the company is eyeing the huge prospects of using emerging high performance fiber reinforced engineered cementitious composite (ECC) instead of traditional concretes in the repair of bridge infrastructures. Rehabilitation and repair of bridge structures damaged by continuous wear, as well as time-dependent and environmental effects, is a major concern for a large number of reinforced concrete (RC) and prestressed concrete bridge structures. Every year, in North America, billions of dollars are spent to repair and maintain bridges. With decreasing budget allocations for infrastructure maintenance, rehabilitation, and replacement, the need for greater durability is apparent. The high strain capacity (300 to 500 times greater than normal concrete) and durability (maintaining crack widths less than 60 µm) makes flowable ECC an ideal material for construction. Given the worldwide demand for infrastructure systems, the potential application of ECC either in new construction or as a repair material is enormous. ECC-based repair in construction is an emerging technology. The implementation of such technology can enhance strength, durability, ductility and service life of bridge structures and also solve problems associated with conventional concrete repairs. The proposed research project, initiated by Facca, is aimed at developing ECC-based repair technology for deteriorated bridge piers. The main objectives of this research are to study axial load behaviour of ECC-repaired deteriorated RC bridge piers under static monotonic loading compared to their non-deteriorated counterparts and develop design specifications for ECC-repaired bridge piers. Facca can gain competitive advantage in the construction industry (leading to boosting revenue and job creation) through this development considering future prospects and demand of emerging ECC-based repair technologies in Canadian and global markets.**