I-Corps: Recycled plastic lumber building material replacement for structural lumber

I-Corps：再生塑料木材建筑材料替代结构木材

• 批准号: 2226952
• 负责人: Rasim Guldiken
• 金额: $ 5万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-06-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2226952&HistoricalAwards=false
• 关键词: Corps; Recycled; plastic; lumber; building

The broader impact/commercial potential of this I-Corps project is the development of a recycled plastic building material intended as a drop-in replacement for structural lumber. This proposed material is similar in cost to lumber and may provide equivalent installation methods, may reduce weight, and may prevent damage due to rot and insects. The proposed initial application is the US agricultural fence post market: 206 million linear feet of fencing or 15 million fence posts annually. Using current lumber prices, this market is estimated to have a current value of $98 million. The softwood sawn dimensional lumber, the targeted industry, has an approximate market value of $39 billion in the United States. Based on initial customer interviews, wood fence posts typically last 10-20 years. The polymers utilized in the proposed material have a useful life of 30-50 years, significantly reducing future costs for end users. Additionally, the reduction in wood usage could reduce the 10 million acres of forest harvested for fence posts each year in the United States. The goal is to develop a material that directly replaces lumber while utilizing low-cost recycled materials and providing a similar or reduced price compared to lumber.This I-Corps project is based on the development of a composite material that matches the driving force and withdrawal force of nails and other fasteners used in wood. The proposed material utilizes an over jacketing extrusion technique to increase the gross mechanical strength of the section as well as a hollow composite composed of the proposed materials. The innovation requires an increase in the coefficient of friction while reducing the compressive strength to allow for nails to be driven by hand. Over jacketing extrusion must be reconfigured to allow for coextrusion of the bulk composite material with macro-reinforcement, which is similar to the reinforcement method used in reinforced concrete. These requirements must be maintained while allowing for a hollow section to reduce material costs. The project seeks an improved understanding of the influence of additives or fillers based on polymer-based composites. Fillers provide advantages including reduced costs, increased stiffness, and increased compressive strength, and their usage has increased in the polymer industry. Futrue activities will focus on the introduction of fillers for increased friction in mechanically fastened connections.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个I-Corps项目的更广泛的影响/商业潜力是开发一种再生塑料建筑材料，用于替代结构木材。这种材料的成本与木材相似，并且可以提供等效的安装方法，可以减轻重量，并且可以防止由于腐烂和昆虫造成的损坏。拟议的初始应用是美国农业围栏后市场：每年2.06亿英尺长的围栏或1500万个围栏柱。使用目前的木材价格，这个市场估计有9800万美元的现值。目标行业软木锯材在美国的市场价值约为390亿美元。根据最初的客户访谈，木栅栏职位通常持续10-20年。所提出的材料中使用的聚合物具有30-50年的使用寿命，大大降低了最终用户的未来成本。此外，木材使用量的减少可以减少美国每年为栅栏而砍伐的1000万英亩森林。目标是开发一种直接替代木材的材料，同时利用低成本的回收材料，并提供与木材相似或更低的价格。该I-Corps项目基于开发一种复合材料，该材料与木材中使用的钉子和其他紧固件的驱动力和拔出力相匹配。 所提出的材料利用了一种外护套挤出技术，以增加截面的总机械强度，以及由所提出的材料组成的中空复合材料。该创新需要增加摩擦系数，同时降低抗压强度，以允许用手驱动钉子。必须重新配置外夹套挤出，以允许与宏观增强体共挤出块状复合材料，这类似于钢筋混凝土中使用的增强方法。必须保持这些要求，同时允许中空截面以降低材料成本。该项目旨在更好地了解基于聚合物基复合材料的添加剂或填料的影响。填料提供的优点包括降低的成本、增加的刚度和增加的抗压强度，并且它们在聚合物工业中的使用已经增加。未来的活动将集中在引入填料，以增加机械紧固连接的摩擦。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

项目成果

Reinforced, Nailable Rubber Concrete with Strength and Withdrawal Properties Similar to Lumber

增强、可钉的橡胶混凝土，其强度和拔模性能与木材相似

• DOI: 10.3390/jcs7100405
• 发表时间: 2023
• 期刊: Journal of Composites Science
• 影响因子: 3.3
• 作者: Cotter, John;Guldiken, Rasim
• 通讯作者: Guldiken, Rasim

Bulk Glass Reinforced Composite Columns: Physical Testing Results, Analysis, and Discussion

大块玻璃增强复合柱：物理测试结果、分析和讨论

• DOI: 10.3390/jcs7060241
• 发表时间: 2023
• 期刊: Journal of Composites Science
• 影响因子: 3.3
• 作者: Cotter, John;Guldiken, Rasim
• 通讯作者: Guldiken, Rasim