PFI: AIR - TT: Developing A Bio-based Rejuvenator to Revitalize Asphalt in Scrap Roofing Shingles

PFI：AIR - TT：开发生物基再生剂以再生废屋顶瓦中的沥青

基本信息

批准号：
1640517
负责人：
Mahour Parast
金额：
$ 20万
依托单位：
North Carolina Agricultural & Technical State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-10-01 至 2019-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1640517&HistoricalAwards=false
关键词：
PFI AIR TT Developing Bio

项目摘要

This PFI: AIR Technology Translation project focuses on translating the science of bio-modified recycled asphalt to fill the need for substitute and supplementary supply for shrinking petroleum-based adhesives. The Bio-modified Recycled Asphalt Shingle (BRAS) is important because it enables the use of scrap shingles, which are otherwise being disposed of in landfills, to be upgraded for use as a supplementary product to asphalt binder. This technology is significant because asphalt supplies are diminishing rapidly since the advent and adaptation of coking technologies by refineries. Accordingly, this PFI project will result in a proof-of-concept for BRAS for use in pavement construction. The newly developed product, BRAS, is low-cost, durable and environmentally friendly, features that improve pavement service life while reducing pavement construction cost and carbon footprint. In addition, the production of BRAS uses products from two waste streams (scrap shingles and animal waste), which also provides a cost-effective waste management solution. Thus, BRAS is superior in terms of cost savings, extended durability, environmental impact and energy savings when compared to the existing products in the construction industry.This project addresses the following technology gaps as it translates from research discovery toward commercial application. The supply of asphalt binder found in scrap shingles are highly oxidized from years of prior service. Oxidation typically disturbs colloidal stability of asphalt structure by converting maltene portions and increasing asphaltene aggregation. Accordingly, this PFI project is using specific molecular species extracted from animal waste to restore asphalt stability and enhance its properties. A multi-scale modeling and characterization followed by experiments and prototyping will be used to develop BRAS with properties similar to that of virgin asphalt binder. The project will involve research scholars and students with mechanical, chemical and material science expertise to undertake this research. Students and scholars involved in the project will receive entrepreneurship training while conducting customer interviews and meetings with potential industry partners to facilitate technology scale-up.

该PFI：空气技术翻译项目的重点是翻译生物改造的回收沥青科学，以满足替代品和补充供应的需求，以缩小基于石油的粘合剂。生物修饰的再生沥青木瓦（BRA）很重要，因为它可以使用废木瓦（否则将在垃圾填埋场中丢弃）升级，以用作沥青粘合剂的补充产品。这项技术之所以重要，是因为沥青供应自从炼油厂对焦化技术的出现和改编以来，沥青供应正在迅速减少。因此，该PFI项目将导致胸罩的概念验证，以用于人行道结构。新开发的产品BRA是低成本，耐用且对环保的友好功能，可改善路面服务寿命，同时降低路面建筑成本和碳足迹。此外，胸罩的生产还使用了两个废物流（废料架和动物废物）的产品，这也提供了一种具有成本效益的废物管理解决方案。因此，与建筑行业中现有产品相比，胸罩的成本节省，延长的耐用性，环境影响和节能方面都很出色。本项目纠正以下技术差距，因为它从研究发现转化为商业应用。在先前服务的多年中，在废料板中发现的沥青粘合剂的供应被高度氧化。氧化通常会通过转化麦芽烯部分和增加沥青质聚集来打扰沥青结构的胶体稳定性。因此，该PFI项目使用从动物废物中提取的特定分子物种来恢复沥青稳定性并增强其特性。多尺度的建模和表征，然后进行实验和原型制作，用于开发具有类似于Virgin Asphalt Binder的特性的文胸。该项目将涉及具有机械，化学和材料科学专业知识的研究学者和学生，以进行这项研究。参与该项目的学生和学者将接受企业家精神培训，同时与潜在的行业合作伙伴进行客户访谈和会议，以促进技术的扩大规模。