当前位置: X-MOL 学术Environ. Sci. Pollut. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of integrating industrial and agricultural wastes on concrete performance with and without microbial activity.
Environmental Science and Pollution Research Pub Date : 2021-09-16 , DOI: 10.1007/s11356-021-16445-2
Amanpreet Kaur Sodhi 1 , Neeraj Bhanot 2 , Rajwinder Singh 3 , Mohammed Alkahtani 4, 5
Affiliation  

Cement is an essential material used in constructional activities. An emerging concern in the industry however is the CO2 emissions, which are triggered by cement manufacturing units. These emissions can be controlled to some extent by not using cement exclusively and instead replacing a percentage of it with waste material with properties similar to cement. Electric arc furnace dust (EAFD) and rice straw ash (RSA) are waste materials from industrial and agricultural sources which also contain similar constituents that are present in cement. Thus, the objective of this study is to check the effect of EAFD and RSA on concrete properties with the application of Aspergillus niger and Bacillus megaterium. Taguchi's design of experiments has been utilised to explore the effect of operating parameters (i.e. EAFD and RSA replacement (5%, 10% and 15%), curing period of concrete cubes (7, 14 and 28 days) and cell count of fungus/bacteria (104, 106 and 108 CFU/ml)) on the compressive strength and water absorption capacity of concrete blocks in three different scenarios. Optimisation has then been carried out by using the multi-objective genetic algorithm to evaluate the maximum performance of concrete. However, the results of the study indicate best performance in the 2nd context where dust replacement, curing time and cell count were 5%, 18 days and 9.39 × 107 cells per ml of water, respectively, for concrete production utilising Aspergillus niger.

中文翻译:

结合工业和农业废物对具有和不具有微生物活性的混凝土性能的影响。

水泥是建筑活动中使用的重要材料。然而,该行业新出现的一个问题是水泥制造装置引发的二氧化碳排放。这些排放可以在一定程度上得到控制,方法是不只使用水泥,而是用性能类似于水泥的废料代替一定比例的水泥。电弧炉粉尘 (EAFD) 和稻草灰 (RSA) 是来自工业和农业的废料,它们也含有与水泥中存在的类似成分。因此,本研究的目的是通过应用黑曲霉和巨大芽孢杆菌来检查 EAFD 和 RSA 对混凝土性能的影响。Taguchi 的实验设计已被用于探索操作参数的影响(即 EAFD 和 RSA 替代(5%、10% 和 15%),混凝土立方体的养护期(7、14 和 28 天)和真菌/细菌的细胞计数(104、106 和 108 CFU/ml))在三种不同情况下对混凝土块的抗压强度和吸水能力的影响。然后使用多目标遗传算法进行优化,以评估混凝土的最大性能。然而,研究结果表明,在第二种情况下,使用黑曲霉生产混凝土时,粉尘置换、固化时间和细胞计数分别为 5%、18 天和 9.39 × 107 个细胞/毫升水,性能最佳。然后使用多目标遗传算法进行优化,以评估混凝土的最大性能。然而,研究结果表明,在第二种情况下,使用黑曲霉生产混凝土时,粉尘置换、固化时间和细胞计数分别为 5%、18 天和 9.39 × 107 个细胞/毫升水,性能最佳。然后使用多目标遗传算法进行优化,以评估混凝土的最大性能。然而,研究结果表明,在第二种情况下,使用黑曲霉生产混凝土时,粉尘置换、固化时间和细胞计数分别为 5%、18 天和 9.39 × 107 个细胞/毫升水,性能最佳。
更新日期:2021-09-16
down
wechat
bug