- Restrictions on Access:
- Open Access.
- A significant portion of municipal solid waste has traditionally been addressed through recycling; however, the recycling market has become unreliable due to the stringent contamination regulations imposed by Chinas new recycling policy. Solid waste can be addressed through incineration which reduces the volume of the waste. Waste-to-Energy facilities provide an efficient means to carry out the incineration process by generating electricity through steam generation. Although it is not completely waste free, this process leaves a by-product known as municipal solid waste incinerator ash that can be further refined into a lightweight sand material known as reclaimed sands. This work investigates the use of reclaimed sands from the York County Solid Waste Authority in York, PA as a partial replacement for fine aggregates to make internally cured concrete. In internally cured concrete, interior particles release water during the cement hydration process and effectively help the mix cure from the inside out. This leads to a less permeable concrete that increases the freeze-thaw resistance, reduces chloride permeability, and improves the shrinkage resistance of the material. Reclaimed sands are effective internal curing aggregates, since they have a high absorption capacity and the ability to desorb water at a high relative humidity. The testing performed in this work explores the durability of internally cured concrete manufactured with reclaimed sands by assessing the freeze thaw resistance, rapid chloride permeability, and compressive strength of the concrete. As is discussed in later chapters of this work, it was found that reclaimed sands are a suitable replacement for lightweight aggregate in internal curing concrete applications.
- Dissertation Note:
- M.S. Pennsylvania State University 2020.
- Technical Details:
- The full text of the dissertation is available as an Adobe Acrobat .pdf file ; Adobe Acrobat Reader required to view the file.
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