Education > QUESTIONS & ANSWERS > CE 200 Materials LAB Final Quiz 2 - PCC and Wood (Latest update), 2024 - 2025, Questions and answers (All)

CE 200 Materials LAB Final Quiz 2 - PCC and Wood (Latest update), 2024 - 2025, Questions and answers with Complete Solutions

Document Content and Description Below

When conducting the slump test in the laboratory — in accordance to ASTM C 143, "Standard Test Method for Slump of Hydraulic-Cement Concrete" — it was required to rod (25 strokes for every one o... f the three layers) the PCC in the frustum of the cone (the slump test cone or mold) prior to measuring the slump, primarily, so as to: - ✔✔- Compact the freshly mixed portland cement concrete (PCC) in the frustum of the cone mold Why do you pound the PCC 25 times (for every 1 of 3 layers) in the frustum with a rod during the slump test? - ✔✔- To compact the PCC into the cone mold frustum of a cone - ✔✔- formed by cutting the top off of a cone with a cut parallel to the base. The mold for making the slump test is in the shape of : - ✔✔- Frustum of a Cone Slump Test - ✔✔- A test for mixed concrete to determine consistency and workability. You wet the frustum of the cone during Slump Test so as to: - ✔✔- Provide a lubricating effect so that the PCC doesn't stick to the mold when pulled upward When testing the timber specimen in compression parallel to the grain, a significant deviation from the procedures prescribed in ASTM D 143, "Standard Test Methods for Small Clear Specimens of Timber," was: - ✔✔- Not using a displacement-controlled loading scheme (e.g., inch/minute) The clear-grade Douglas fir timber specimen tested in the CE 200L laboratory in shear parallel to the grain would have been stronger if : - ✔✔- Instead, it had been tested perpendicular to t [Show More]

Last updated: 8 months ago

Preview 1 out of 6 pages

Buy Now

Instant download

We Accept: