SBIR Phase I: Twisted Polygonal Fiber Composite Technology for Creating Safer Low Cost High Ductile Concrete Structures

SBIR 第一阶段：扭曲多边形纤维复合材料技术，用于创建更安全的低成本高延性混凝土结构

• 批准号: 0419198
• 负责人: Kulsiri Chandrangsu
• 金额: $ 9.88万
• 依托单位: POLYTORX LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0419198&HistoricalAwards=false
• 关键词: SBIR; Phase; Twisted; Polygonal; Fiber

This Small Business Innovation Research (SBIR) Phase I project will develop a new concrete reinforcement technology. Helix fiber is designed to solve the fundamental problem with cement-based materials - their brittle nature. When concrete is overloaded it tends to fail suddenly, unlike materials such as steel that will bend and actually harden when overloaded. This shortcoming causes problems ranging from cracks in sidewalks to catastrophic failures of concrete structures. Helix is a toothpick-sized, coated metallic-wire which is shaped then twisted and is added at the concrete ready mix plant, Helix fibers are randomly dispersed and reinforcing concrete in all directions. Each individual fiber acts like a tiny screw locked into the concrete, Helix combines unprecedented performance with economy. The project will focus on developing the fiber design and proving its effectiveness. The project will ultimately focus on cost optimization and proving the technology's effectiveness for large-scale commercial construction applications. The technology will enable a new generation of concrete-based composites that behave more like steel, making them safer and longer lasting.The broader impacts from this project could be significant. Helix is a major advance in the development of high performance fiber reinforced cement composites which could offer a combination of high tensile strength, ductility, toughness and impact resistance. These composites are suitable in structural applications (i.e., blast-impact and seismic-resistant structures) and in stand-alone applications (thin sheet products for housing, buildings, bridge decks, etc.).

这个小企业创新研究（SBIR）一期项目将开发一种新的混凝土加固技术。螺旋纤维的设计是为了解决水泥基材料的基本问题——它们的脆性。当混凝土超载时，它往往会突然失效，而不像钢铁等材料在超载时会弯曲并变硬。这一缺点导致了从人行道裂缝到混凝土结构的灾难性破坏等一系列问题。螺旋是一根牙签大小的涂覆金属丝，它被塑形然后扭曲，并添加到混凝土预拌厂，螺旋纤维随机分散并在各个方向增强混凝土。每一根纤维就像一个锁在混凝土里的小螺丝，Helix结合了前所未有的性能和经济性。该项目将侧重于开发纤维设计并证明其有效性。该项目最终将专注于成本优化，并证明该技术在大规模商业建筑应用中的有效性。这项技术将使新一代的混凝土基复合材料的性能更像钢，使它们更安全，更持久。这个项目的广泛影响可能是重大的。Helix是高性能纤维增强水泥复合材料发展的重大进步，它可以提供高抗拉强度、延展性、韧性和抗冲击性的组合。这些复合材料适用于结构应用（即，爆炸冲击和抗震结构）和独立应用（用于房屋，建筑物，桥面等的薄板产品）。