Evaluation of an Inorganic Resin for Strengthening of Reinforced Concrete and Steel Beams

对一种新开发的用于加固钢筋混凝土和钢梁的无机树脂进行了评价。与有机聚合物相比，新树脂具有一些主要优点；包括：(i)耐火和高温，（ii）耐紫外线，（iii）易于操作，因为树脂是水性的，在施工或养护期间不会发出气味或毒素，以及（iv）与混凝土的化学性更好。在大多数应用中，用无机树脂代替有机聚合物是可能的。此外，新基体的使用将增强高级复合材料在需要耐火性和长期耐用性的应用中的使用。提出的研究的主要目的是获得：使用无机树脂加强钢筋混凝土和钢梁的基本信息；研究了钢筋混凝土梁在持续荷载作用下的性能，以及干湿和冻融条件下钢筋混凝土梁的耐久性。实验评估将采用较大尺寸的梁进行，以模拟实际的现场条件。该项目是亨茨维尔阿拉巴马大学（UAH）和新泽西州罗格斯州立大学（Rutgers）的合作成果。H. Toutanji博士将是UAH的首席研究员，P. Balagure博士将是罗格斯大学的首席研究员。位于阿拉巴马州亨茨维尔的美国宇航局马歇尔飞行航天中心的结构实验室将用于本提案中提出的一些工作。

It is proposed to evaluate a recently developed inorganic resin for strengthening reinforced concrete and steel beams. The new resin has some major advantages over the organic polymers; inclluding: (i) resistance to fire and high temperature, (ii) resistance to UV radition, (iii) easy handling because the resin is water based and emits no odor or toxins during construction or curing period, and (iv) better chemical bonding with concrete. It is possible to replace the organic ploymers with the inorganic resin for most applications. In addition, the use of the new matrix will enhance the use of advanced composites in applications that require fire resistance and long-term durability. The primary objectives of the proposed research is to obtain: basic information for using the inorganic resin for strengthening of reinforced concrete and steel beams; study the behavior of strengthened reinforced concrete beams under sustained loading, and durability of strengthened reinforced concrete beams under wet-dry and freeze-thaw conditions. The experimental evaluation will be conducted using fairly large size beams so as to simulate actual field conditions. This project is a cooperate effort between University of Alabama in Huntsville (UAH) and Rutgers the State University of New Jersey. Dr. H. Toutanji will be the principal investigator at UAH and Dr. P. Balagure will be the principal investigator at Rutgers. The structural Lab at NASA's Marshal Flight Space Center at Huntsville, Alabama will be used for some of the work proposed in this proposal.