College - Author 1
College of Architecture and Environmental Design
Department - Author 1
Construction Management Department
Degree Name - Author 1
BS in Construction Management
Date
6-2023
Primary Advisor/Subject Matter Expert (SME)
Ed Boucher, College of Architecture and Environmental Design, Construction Management Department
Abstract/Summary
Compression tests were performed on three samples of permeable concrete to evaluate the effects of admixes on a conventional permeable concrete. The first mix served as the control, representing a standard permeable concrete sample. The second mix replicated the control but added a small amount of fiberglass, accounting for 0.5% of the cement's weight. The third mix again mirrored the control and incorporated the manufacturer's recommended amount of a water reducing admix known as "Reducer 555". The objective of testing the two new mixes against the control mix was to evaluate the potential increase in ultimate compressive strength. Four 6” x 12” test cylinders were produced for each of the three mixes to allow destructive compression strength testing at 7, 14, 21, and 28 days from the date of initial pouring. The results of the tests revealed that there was a 168.1 psi increase in the ultimate compressive strength over the control mix with the addition of fiberglass, and that the addition of fiberglass did not greatly affect the permeability of the concrete. It also revealed that further testing would be necessary to accurately evaluate the effects of the water reducing agent, due to excess slump and the mix stratifying.
URL: https://digitalcommons.calpoly.edu/cmsp/691
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