ce332lab3 - Conclusion In this lab, it was very interesting...

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Conclusion In this lab, it was very interesting mixing our own concrete. When I worked testing concrete over the summer, the product I was given was always mixed at a large plant with good quality control, so I rarely encountered such a high slump without a superplasticizer. It taught me how hard of a task concrete plants must accomplish every day at such a large scale. I also enjoyed doing more than just the compressive test. I was surprised at how the ACI estimates were significantly off on discussion question 8, and wonder how often this rule of thumb is used in the field. I enjoy working with PCC, so this was a fun lab for me.
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Portland Cement Concrete By: Submitted to:
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Discussion Questions 1. Slump needs to be lowered to 4”, reduce water by 30 lbs, air will lower to 3%, AEA will be needed to reach +2/-1 of 5% 2. Three stages during loading- 0-40% of max- linear deflection and slow crack growth, 40-75%- non-linear deflection, 75%+- rapid crack growth. Crack propagation is much faster in tension, so failure comes much sooner and at a lower load. 3.
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ce332lab3 - Conclusion In this lab, it was very interesting...

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