结构工程师2024，Vol.40Issue(2)：170-175,6.
矿渣和粉煤灰对微生物-氧化镁协同固化钻屑性能的改良机理
Improvement Mechanism of Solidification of Drill Cuttings by Microbial-Magnesium Oxide Synergistic in the Present of Slag and Fly Ash
唐国旺 1邓强 1赵中军 1周锴 1王贵和2
作者信息
- 1. 北京城建集团有限责任公司,北京 100088
- 2. 中国地质大学(北京),北京 100083
- 折叠
摘要
Abstract
Drill cuttings,as a type of solid waste,were mainly treated through cement solidification.However,a large amount of carbon dioxide was easily generated by processing cement,which was not conducive to environmental protection.Based on the above issues,a new method of microorganism magnesium oxide synergistic solidification of drilling cuttings is proposed in this paper.Through strength testing,the improvement of drill cuttings solidification by the synergy of microorganism and magnesium oxide in the presence of blast furnace slag and fly ash was studied.The strength of oil-based drill cuttings solidification was increased with the increase of blast furnace slag concentration and gradually decreased with the increase of fly ash concentration.A maximum strength of 5.4 MPa was obtained.The types and structures of the products in the solidified were analyzed through FTIR,XRD and SEM.The results showed that the products were composed of continuous brucite(mineralized product),cloud-like hydrated magnesium silicate,and layered hydrotalcite(hydrated product).Drill cuttings were solidified by the mineralized product and a small amount of hydrated product,revealing the mechanism of drilling cuttings being solidified by the synergy of microorganism and magnesium oxide in the presence of slag and fly ash.关键词
钻屑/粉煤灰/矿渣/生物矿化/活性氧化镁Key words
drill cuttings/fly ash/slag/bio-mineralization/magnesium oxide引用本文复制引用
唐国旺,邓强,赵中军,周锴,王贵和..矿渣和粉煤灰对微生物-氧化镁协同固化钻屑性能的改良机理[J].结构工程师,2024,40(2):170-175,6.
