Accessed ĭeng NS, Wang XB (2003) Life cycle assessment. Accessed ĬSC (China State Council) (2016) Comprehensive work plan for energy conservation and emission reduction in the 13th Five-year Plan. Accessed ĬCPA (China Concrete and Cement-based Products Association) (2017) Report on the development of fly ash in 2016. Accessed ĬACA (China Aerated Concrete Association) (2016) China aerated concrete industry development guidelines (2016–2020). J Clean Prod 66:27–36ĬABEE (China Association of Building Energy Efficiency) (2018) Research Report on building energy consumption in China in 2017. Fuel 83(7-8):957–970īlankendaal T, Schuur P, Voordijk H (2014) Reducing the environmental impact of concrete and asphalt: a scenario approach. These findings are helpful to facilitate the sustainable production of autoclaved aerated fly ash and concrete block.īenetto E, Rousseaux P, Blondin J (2004) Life cycle assessment of coal by-products based electric power production scenarios. Sensitivity analysis shows that the fly ash slurry production should be optimized preferentially, followed by lime grinding and steam curing processes. The key materials are cement, lime, and natural gas, which account for 44.91%, 22.79%, and 20.61% respectively of overall environmental impact. These processes account for 46.58%, 26.00%, and 19.62% of the total environmental load respectively. Key processes are fly ash slurry production, lime grinding, and steam curing processes. Results show that the top four environmental impact categories are marine ecotoxicity, freshwater ecotoxicity, freshwater eutrophication, and human toxicity. The key processes and key materials with significant environmental impact are identified.
Choosing 1 m 3 of autoclaved aerated fly ash and concrete block product as functional unit and “cradle to gate” as system boundary, a life cycle inventory is developed.
To examine the environmental and economic impacts of its production process is imperative. However, some typical issues are associated with autoclaved aerated fly ash and concrete block production process such as energy and material consumption as well as pollutant emissions. As a kind of green building material and resource comprehensive utilization product, autoclaved aerated fly ash and concrete block have better performance in terms of heat preservation, sound insulation, and fire resistance. With the rapid development of construction industry, consumption of concrete block has increased rapidly in China.
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