Abstract
The feasibility of coordinated use of water-based drilling cuttings (WDC), fly ash, and phosphogypsum (PG) as raw materials for the preparation of WDC non-autoclaved aerated concrete (WNAAC) was evaluated by laboratory experiment. The results showed that the pozzolanic reaction of the multi-component cementitious system containing 40% (in mass) of WDC is significantly promoted. Newly formed C-S-H gel and ettringite with the uniform distribution of fibrous and flake-like shape occur, presenting a denser and interlock microstructure. In addition, after cured by steam at 80 °C for 24 h, the mechanical property and unit weight of the WNAAC prepared with 40% WDC fully meet the B06, A3.5 grade of China state standard (GB/T11968-2006). Environmental performance tests confirm that the WNAAC prepared with 40% WDC does not create any secondary contamination.
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Wang, Cq., Mei, Xd., Zhang, C. et al. Mechanism study on co-processing of water-based drilling cuttings and phosphogypsum in non-autoclaved aerated concrete. Environ Sci Pollut Res 27, 23364–23368 (2020). https://doi.org/10.1007/s11356-020-09029-z
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DOI: https://doi.org/10.1007/s11356-020-09029-z