U.S.-Mexico Cooperative Research: On the Durability of Reinforced,Prestressed,Post-Tensioned Concrete in a Marine Environment

这个美国-墨西哥奖将有助于支持联合 由D博士领导的小组之间的研究。五、Reddy 海洋结构和岩土工程中心， 佛罗里达大西洋大学和洛伦佐·马丁内斯博士 墨西哥国立大学（UNAM） 的 合作的目的是解决 新材料对耐久性的影响 钢筋/预应力/后张混凝土。 拟议中的实验将研究 混凝土的耐久性， 不同类型的水泥。 配合比设计变量， 如混凝土强度、含气量、坍落度， 水灰比，将研究其 对耐久性的影响。 耐久性问题的严重性是 足够大，值得国家和 国际行动。 当前的成本 混凝土的更换和修补要求 由于耐久性不足， 保守估计是数十亿美元。 这项研究将提高科学认识 钢筋混凝土的退化，提供 改善对实际行为的解释，以及 制定估计预期寿命的准则。

This U.S.-Mexico award will help to support joint research between groups headed by Dr. D. V. Reddy of the Center for Marine Structures and Geotechnique at Florida Atlantic University and Dr. Lorenzo Martinez of the National University of Mexico (UNAM). The purpose of the collaboration is to address the effects of new materials on the durability behavior of reinforced/prestressed/post-tensioned concrete. The proposed experiments will study changes in concrete durability that result from the use of different types of cement. Mix design variables, such as concrete strength, air content, slump, and water-cement ratio, will be studied for their effects on durability. The magnitude of the durability problem is considerable enough to merit national and international action. The cost of current replacement and repair requirements in the concrete infrastructure, caused by inadequate durability, are conservatively estimated to be billions of dollars. This study will improve the scientific understanding of deterioration of reinforced concrete, provide improved interpretation of the actual behavior, and develop guidelines for estimating life expectancy.