PCC FINAL DONE FOR - Portland Cement Concrete CE 337: Civil...

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Portland Cement Concrete CE 337: Civil Engineering Materials Spring Semester 2008 Experiment Number 4 Group Number- 4 Liz Cramer Josh Fink Ryan Laruwe Steve Remias March 10 th , 2008 ABSTRACT A mix design was determined to accommodate certain conditions given in a design problem involving a structure in Traverse City. Based on several design steps, a mix was designed, and the appropriate components were mixed in the lab. In order to test that the mix met the specifications required in the design problem, several tests were performed. In the fresh state, the concrete was subject to slump test, fresh temperature measurement, unit weight, and air content tests. The concrete was then cast in cylinders and beams and cured using three different conditions – outside, ASTM submerged, and in an oven. The specimens were then subjected to hardened concrete tests. The cylinders were subjected to compressive strength and split tensile tests, and the beam was subjected to a flexural strength test. It was determined that the concrete mix design met specifications in the fresh state tests, but not in the hardened state tests. It was also determined that the most effective curing method for achieving the best strength was the ASTM submerged curing method.
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GROUP ORGANIZATION LAB Steve measured the water and added the air entraining admixture, and added the water to the mix. Liz prepared the large pans for the slump test and put the concrete into the slump test cone for testing. Josh cast specimens in the molds and aided in the water measurement process. Ryan recorded data and cast the specimens in the molds. REPORT Josh wrote the methods conclusion and aided in compiling the report, as well as the appendices. Ryan wrote the introduction and aided in the compiling and editing of the report. Liz wrote the abstract, methods and materials, and group organization portions of the report. Steve wrote the data and discussion sections and helped put together the appendices 2
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INTRODUCTION Based upon specifications provided on the proposed Traverse City, Michigan parking structure a custom (PCC) mix design has been developed. The specified strength and environmental requirements required a unique mixture that could withstand freeze-thaw conditions as well as cure with a minimum twenty eight day ultimate strength of of 3,000 psi. The following experiment is an analysis of the design mixture components that best suit a freeze thaw environment. Finally a series of test was performed on the suggested mixtures fresh and cured samples to test its performance. Experimental Objectives: 1. Differentiate the specific gravities associated with fine and coarse aggregate 2. Compute the specific gravities associated with fine and coarse aggregates used in the design mixture as well as the corresponding aggregate unit weights. 3.
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This note was uploaded on 03/19/2008 for the course CE 337 taught by Professor Baladi during the Spring '08 term at Michigan State University.

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PCC FINAL DONE FOR - Portland Cement Concrete CE 337: Civil...

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