Enhancing Mechanical, Hydrostatic and Durability Performance of Precast Concrete Pipe

虽然加拿大的预制混凝土管道行业已有世纪的历史，但由于柔性管道产品的竞争，在过去几十年中，该行业的市场份额不断缩小。需要技术突破来振兴这一行业，这将有利于加拿大经济。满足最终用户的期望，降低成本，制定基于性能的规范和减轻硫化氢腐蚀问题是这一战略的核心。该研究项目是由安大略的一家主要钢筋混凝土管（RCP）生产商和西方大学的研究人员合作进行的。该团队将首先严格审查RCP生产和测试的最新技术，并对当前RCP标准提出必要的修改。因此，将提出更稳健和准确的测试来量化RCP的机械和流体静力学性能。将探索具有成本效益的单椭圆形钢筋笼加固，作为传统的双（内部和外部）钢筋笼加固的替代方案。一种新的内衬管铸造“完美管”将被研究作为新一代的高性能和耐用的RCP。混凝土技术和纳米涂料的技术突破将被部署，以减轻细菌引起的下水道RCP的腐蚀问题。高素质的人员将在安大略的圭尔夫和奥克维尔以及西部大学的结构实验室接受培训。该项目将帮助公司发展竞争优势，并通过增加市场份额来产生额外收入。它还将帮助加拿大RCP行业在整个战略上将自己定位为北美标准实践和新产品开发的领导者。

While the precast concrete pipe industry in Canada is more than a century old, it has suffered shrinking market share over the last few decades due to emerging competition from flexible pipe products. Technological breakthroughs are needed to invigorate this industry, which will benefit the Canadian economy. Meeting the end-user expectations, reducing cost, developing robust performance-based specifications and mitigating hydrogen sulfide corrosion problems are central to this strategy. This research project is conducted in partnership between a major reinforced concrete pipe (RCP) producer in Ontario and researchers from Western University. The team will first critically examine the state-of-the-art of RCP production and testing and propose needed changes to current RCP standards. Accordingly, more robust and accurate tests to quantify the mechanical and hydrostatic performance of RCP will be proposed. Cost-effective single elliptical steel cage reinforcement will be explored as an alternative to the traditional double (inner and outer) steel cage reinforcement. A new internally lined pipe coined "perfect pipe" will be investigated as a new generation of high-performance and durable RCP. Technological breakthroughs in concrete technology and nano-coatings will be deployed to mitigate bacteria induced corrosion problems in sewer RCP. Highly qualified personnel will be trained at both Con Cast Pipe, Guelph and Oakville, Ontario and the Structures Laboratory at Western University. The project will help the company develop competitive edge and generate additional revenue through gaining increased market share. It will also help the Canadian RCP industry at large strategically position itself as the North American leader in standard practice and new product development.