Characterisation and management of concrete grinding residuals
| Autor: | Nautasha Gupta, Timothy G. Townsend, Christopher C. Ferraro, Matt Kluge, Ben Watts, Paul A. Chadik |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Cement
Environmental Engineering Beneficial use Waste management Construction Materials 0211 other engineering and technologies Amendment 02 engineering and technology 010501 environmental sciences 01 natural sciences Pollution law.invention Grinding Soil Portland cement law Hazardous waste Aquatic environment Metals Heavy 021105 building & construction Florida Environmental science Recycling Mortar 0105 earth and related environmental sciences |
| Zdroj: | Waste Management & Research: The Journal for a Sustainable Circular Economy. 36:149-158 |
| ISSN: | 1096-3669 0734-242X |
| Popis: | Concrete grinding residue is the waste product resulting from the grinding, cutting, and resurfacing of concrete pavement. Potential beneficial applications for concrete grinding residue include use as a soil amendment and as a construction material, including as an additive to Portland cement concrete. Concrete grinding residue exhibits a high pH, and though not hazardous, it is sufficiently elevated that precautions need to be taken around aquatic ecosystems. Best management practices and state regulations focus on reducing the impact on such aquatic environment. Heavy metals are present in concrete grinding residue, but concentrations are of the same magnitude as typically recycled concrete residuals. The chemical composition of concrete grinding residue makes it a useful product for some soil amendment purposes at appropriate land application rates. The presence of unreacted concrete in concrete grinding residue was examined for potential use as partial replacement of cement in new concrete. Testing of Florida concrete grinding residue revealed no dramatic reactivity or improvement in mortar strength. |
| Databáze: | OpenAIRE |
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