EFFECT OF RECYCLED CONCRETE AGGREGATES ON THE LONG-TERM, ELASTIC, TOTAL DEFLECTION AND STRENGTH OF PRECAST PRESTRESSED HOLLOW CORE CONCRETE SLABS
2019
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
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- Usage284
- Abstract Views144
- Downloads140
Thesis / Dissertation Description
Concrete constitutes the largest portion of construction and demolition waste generated each year in the United States. The Environmental Protection Agency (EPA) estimates that the total production of construction and demolition of concrete waste during 2015 was 381.8 million tons. In order to reduce the economic and environmental effects of waste concrete, researchers have begun to incorporate it into concrete mixtures. However, the inherent variability in mechanical properties between RCA sources makes it difficult to quantify the maximum permissible replacement of natural aggregate and the end-result properties of concrete. This project investigates the use of recycled concrete aggregates (RCA) obtained from a precast prestressed concrete plant in the manufacture of prestressed hollow core concrete slabs. Seven full scale slabs were tested in two ways (1) under long term static bending loads to investigate long term deflection behavior, and (2) under short term loading in bending, beam (one-way) shear and in punching (two-way) shear.The results indicate that slabs with RCA generated larger long-term service deflections. With regards to strength testing the slabs with RCA performed just as well, if not better, than slabs with no RCA. Overall, this testing indicates RCA is a viable option in the efforts to help improve sustainability while maintaining a safe design.
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