The engineering firm you work for has recently been selected to design a portion of the newly proposed runway for Atlanta-Hartsfield International Airport. While performing research prior to the design phase, your boss becomes suspicious of some of the aggregates that will be used in the mixture for the concrete pavement. The real concern is the possibility of an alkali - silica reaction (ASR) in the concrete pavement. Your boss does not fully understand this reaction. He asks you to research this type of reaction further and present a two page report on this phenomenon. Included in the report should be: . . Briefly describe how alkali-silica reaction occurs. Provide a detailed explanation of how ASR occurs (i.e. where does the alkali come from, where does the silica come from, what happens?) Briefly explain why it is a problem. Does this pose durability problems? What measures could you use to prevent this type of reaction from occurring and make a longer lasting concrete pavement? Explain your reasoning behind your methods. Also, provide options for remedial repair (or slowing down the reaction). Explain. Provide a one paragraph summary on a case study (failure or preventative measure) that involves alkali silica reactivity (ASR) You may include pictures; however, your papers should not consist of only pictures. Find at least two additional sources for this article (library, books, internet, etc.). Cite your references both within the document i.e. (Tuthill, 1982) and at the end in a reference section (with the Author, Article Title, Journal/Book/Website/etc... Publisher, Publication Date, and Page Numbers. Do not forget to document your pictures. Your boss will not only evaluate your research report on technical aspects but also your writing skills