US-Egypt Cooperative Research: Performance of Recycled Concrete

描述：该奖项旨在支持堪萨斯州劳伦斯市堪萨斯大学土木工程系Steven McCabe博士和埃及开罗美国大学（AUC）建筑工程系Mohamed Abou Zeid博士的合作项目。科学家们计划评估使用再生混凝土作为新混凝土骨料的各个方面。他们计划研究再生混凝土的粘结行为和耐久性。他们将使用两种类型的再生骨料和一种传统的天然骨料来制备混凝土混合物，这种骨料与回收前的原始混凝土中存在的骨料相似。将对混合物进行和易性、抗压强度、氯离子渗透试验、与钢筋的结合、断裂行为和潜在的碱骨料反应行为等方面的评估。这项研究将包括分析和实验两部分。有限元分析（FEA）将用于研究再生混凝土的粘结和断裂行为。研究范围：本研究可能为美国和其他地方的再生混凝土规范提供信息。McCabe教授因其在该项目相关领域的工作而闻名于研究界。两位研究人员在拟议的研究领域拥有丰富的经验和专业知识，完全有资格开展该项目。他们过去曾在研究项目上合作过，并将从拟议的合作中受益。他们可以使用所需的设施。这项研究将对经济和环境产生影响，并对混凝土行业产生潜在影响。科学家们计划在堪萨斯大学和AUC建立一个网站，以便在互联网上传播该项目的研究成果。一名美国研究生将参与研究，并将获得国际科学活动的经验。该提案符合INT在共同感兴趣的领域支持合作研究的目标。该项目得到了美国-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，以开展这些合作活动。

9904484McCabeDescription: This award is to support a collaborative project by Dr. Steven McCabe, Department of Civil Engineering, University of Kansas, Lawrence, Kansas and Dr. Mohamed Abou Zeid, Department of Construction Engineering, The American University in Cairo (AUC), Cairo, Egypt. The scientists plan to evaluate various aspects of using recycled concrete as the aggregate for new concrete. They plan to study bond behavior and durability of recycled concrete. They will prepare concrete mixtures using two types of recycled aggregates and one conventional natural aggregate that is similar to the one present in the original concrete before it was recycled. The mixtures will be evaluated for workability, compressive strength, chloride-ion penetration test, bond with reinforcing steel rebars, fracture behavior and potential alkali-aggregate reaction behavior. The study is to include analytical and experimental components. Finite Element Analysis (FEA) will be used to study the bond and fracture behavior of recycled concrete.Scope: This study may provide information that can be used in codes of practice for recycled concrete in the US and elsewhere. Professor McCabe is well known to the research community for his work in areas related to the project. Both investigators have extensive experience and expertise in the area of the proposed research and are well qualified to conduct the project. They have collaborated on research projects in the past, and will benefit from the proposed collaboration. They have access to the needed facilities. The impact of this study will be economic and also environmental, with potential impact on the concrete industry. The scientists plan to set a web site at the University of Kansas and AUC to facilitate the dissemination of the project findings over the Internet. A US graduate student will participate in the research, and will gain experience in international scientific activities. This proposal meets the INT objective of supporting collaborative research in areas of mutual interest. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.