1. Each group should mix up samples of concrete
  2. You should mix two samples of standard concrete 3 2 1 ratio


  1. The class should mix five or so samples on the same date
  2. The Samples should be labelled and tested periodically, with proper recordkeeping
  3. The first sample should be tested after one day
  4. After that, samples should be tested in roughly one week intervals, one at a time


  1. Mix up alternate recipes of concrete
  2. Keep track of the recipes
  3. Keep track of the date and who mixed the samples
  4. There should be some identifying tag that follows the samples through the process
  5. The samples could be stored in envelopes or clear bags for later access
  6. Keep track of the data of how the samples performed