ABSTRACT

The research recommends a novel and sustainable method to utilize an agricultural waste in the anthracite coal ash-based brick production. Arachis hypogaea shell ash is used as a substitute for the sand in the anthracite ash-based brick production. Also, random forests are used for the strength prediction. The tests for compressive strength, water absorption, efflorescence and hardness are being conducted to assess the performance. The presence of shell ash up to 60% replacement resulted in an incremental trend of anthracite ash-based brick’s strength with a denser microstructure. The M-sand to Arachis hypogaea shell ash ratio has to be maintained at 40:60 to get the optimum results. The addition of shell ash to the Anthracite coal ash brick could reduce the absorption rates by nearly 37%. The correlogram and relatively variable importance suggests that the curing regime plays a dominant role than the shell ash content. Random forests predicted the strength accurately with least errors. A novel mathematical equation is being proposed to predict the compressive strength of the Innovative brick. The research could significantly contribute to the sustainable utilization of the Arachis hypogaea shell ash in the brick production and it leads lesser utilization of manufactured sand.

摘要

该研究推荐了一种新颖且可持续的方法，以在无烟煤灰砖生产中利用农业废料。花生壳灰在无烟煤灰砖生产中用作砂的替代品。此外，随机森林用于强度预测。正在进行抗压强度、吸水性、风化和硬度测试以评估性能。高达 60% 的壳灰替代率的存在导致无烟煤灰基砖的强度呈递增趋势，具有更致密的微观结构。M 砂与花生壳灰比必须保持在 40:60 才能获得最佳结果。在无烟煤灰砖中添加壳灰可使吸收率降低近 37%。相关图和相对可变的重要性表明固化制度比壳灰含量起主导作用。随机森林以最少的错误准确地预测了强度。提出了一种新颖的数学方程来预测创新砖的抗压强度。该研究可以显着促进花生壳灰在砖生产中的可持续利用，并导致机制砂的利用减少。