Lab 3 and 7 Writeup

Lab 3 and 7 Writeup - Bryce DaFonte 11/9/11 BRAE 433 Lab...

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Bryce DaFonte 11/9/11 BRAE 433 Lab 3/7 The purpose of having two different labs for this report was to determine the “28 day” f’c value that we have been using throughout the duration of the class. During the lab on 10/3/2011 (Lab 3) the class split into three groups and chose a different water/cement ratio for the pouring procedure. The three ratios were 0.40, 0.55 and 0.70. The 0.55 group started by pouring the correct amounts of each of the four elements that make up concrete into the mixer. The initial amounts were 149.0 lbs of aggregate 27.9 lb of water, 115.0 lbs of sand, and 55.0 lbs of portland cement. The following pictures describe the various elements used and the process the group used to measure out the ingredients and then pour into the mixer. Figure 1. Using the scale to precisely measure out the ingredients Figure 2. Watching the mixer mix the ingredients
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Figure 3. Using a slump test to check the validity of the concrete Figure 4. Taking notes on how the mixer works the concrete
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This note was uploaded on 11/18/2011 for the course BRAE 433 taught by Professor Styles during the Fall '10 term at Cal Poly.

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Lab 3 and 7 Writeup - Bryce DaFonte 11/9/11 BRAE 433 Lab...

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