US-Egypt Cooperative Research: Development of New Mortars for Repair and Preservation of Historical Structures

0210936 MalekDescription：该奖项是为了表彰宾夕法尼亚州州立大学(PSU)材料研究实验室R.I.Malek博士和埃及Shebe El-Kom梅努菲亚大学地质系Gamal Kamh博士共同开展的一项研究项目。这项研究的目的是提供关于新修复砂浆的组成和旧结构的保存程序的数据库。这两位科学家计划研究恶化的机制。他们将确定新砂浆的成分，这些成分与变质的原因有关，并与宿主结构和新粘结剂的使用相适应。他们将使用化学分析、超声波光谱、X射线和魔角旋转核磁共振、色调、孔隙率和PSU的弹性模数来诊断损坏的原因。他们将尝试几种新的粘结剂，包括水泥灌浆、大地聚合物、水泥/有机聚合物混合物和磷酸盐基粘结剂。他们将对粘结剂进行表征，以确保其寿命和与主体结构的兼容性。它们将包括地聚合物，由于骨架中铝和硅酸盐之间的电荷差异，作为修复材料在捕集盐类方面具有优势。他们将测试磷酸盐粘合剂，这种粘合剂具有捕获盐分、颜色可调和尺寸稳定的优点。范围：两名合作研究人员具有互补的研究背景经验。马利克博士在胶凝材料及其降解和修复方面拥有丰富的经验。卡姆博士对历史建筑在自然风化条件下和人类活动原因下的退化模式具有丰富的经验。他们将结合他们的经验，利用PSU的实验室资源，研究修复和保护古建筑和古迹的实际问题。两人将互访，派将访问，首先到埃及进行实地考察，然后到PSU进行实验室分析。这两个研究所的研究生将参与实地和实验室研究。这些学生在修复和保护科学方面获得的经验可能有助于他们进一步实现职业目标。将编写相关教育材料，作为新的修复与保护科学技术课程的种子，以进一步教育学生。该项目由国际科学和工程办公室以及土木工程和机械系统司资助。

0210936MalekDescription:This award is for support of a joint research project by Dr. R. I. Malek, Materials Research Laboratory, Pennsylvania State University (PSU), University Park, Pennsylvania and Dr. Gamal Kamh, Geology Department, Menoufia University, Shebeen El-Kom, Egypt. The objective of this research is to provide database on compositions of new restoration mortars and preservation procedure for old structures. The two scientists plan to investigate deterioration mechanisms. They will determine the compositions of new mortars that are relevant to the causes of deterioration and that are compatible with host structures as well as the use of new binders. They will diagnose the causes of damage using chemical analysis, ultrasonic spectroscopy, x-ray and Magic Angle Spinning NMR, color hue, porosity, and elasticity moduli at PSU. They will try several new binders including cement grout, geopolymers, cement/organic polymer blends, and phosphate-based binders. They will perform characterization of the binders to ensure their longevity and compatibility with the host structure. They will include geopolymers, which have an advantage as repair material in trapping salts due to the difference in charge between Aluminum and Silicates in the framework. They will test phosphate binders, which have the advantage of trapping salts and being color adjustable and are dimensionally stable. Scope: The two collaborating investigators have complementary research background experiences. Dr. Malek has considerable experience in cementitious materials and their degradation and repair. Dr. Kamh has experience in modes of deterioration of historic buildings under natural weathering conditions and due to human activity causes. They will combine their experiences and using the laboratory resources at PSU for the study of the practical aspects of restoration and preservation of ancient buildings and monuments. The two will exchange visits PI will visit, first to Egypt for the field study and then to PSU for the laboratory analysis. Graduate students at both institutes will be involved in the field and laboratory research. The experience these students gain in the restoration and preservation science may help them further their career goals. Relevant educational materials will be prepared and used as a seed for a new curriculum on science and technology of restoration and preservation to further students' education. This project is funded by the Office of International Science and Engineering and the Division of Civil and Mechanical Systems.