Hello, Please submit a 4-page small research paper on Concrete Mix Design (i.e., where did the curves in your assignment derive from, why are they important, etc.) or Lightweight Concrete / Lightweight Aggregates for concrete products. Please include references when quoting a reference document./n Intsruction Write from Google scholar a construction mix design research paper minimum four pages and the topics it's something like where or when did the mixed design start and how and how did they invent the errors of mixed design? The reference should be from Google scholar

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