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<p>This research aimed to investigate the impacts of integrating a Bacillus cereus solution containing bacteria at optimal GGBS usage rates, with a portion of the cement substituted by GGBS. To manufacture M25 grade concrete, four distinct quantities of GGBS were employed as a substitute for cement: 5%, 10%, 15%, and 20%. Three distinct bacterial concentrations were employed to generate the bacterial solution: 10³, 10⁵, and 10⁸ cells/ml. Concrete that was augmented with a bacterial solution performed better mechanically than concrete that was made entirely of Ground Granulated Blast Furnace Slag (GGBS), according to the study. Additionally, water absorption was measured under both circumstances. The samples M10 demonstrated a sharp increase in the strength of around 12.88, 6.73 and 10.58% in compressive, flexural and split tensile strength as compared standard concrete at the age of 56 days. Mechanical strength was found to decrease as the GGBS percentage surpassed 10%. At a bacterial concentration of 10⁵ cells/ml and a 10% substitution of cement with GGBS, the peak flexural, split tensile, and compressive strengths achieved were 6.6&#xa0;MPa, 3.08&#xa0;MPa, and 46.69&#xa0;MPa, respectively. The pattern of water absorption decreasing as bacterial concentration increased was also seen. The correlation analysis revealed a substantial association between compressive strength and water absorption. For the bacterial solution samples, the R² value was 0.8338, whereas for the GGBS samples it was 0.9044. Additionally, a dependable predictive association was found between compressive strength and UPV, with R² values of 0.8443 for GGBS samples and 0.7376 for samples containing bacteria, respectively.</p>

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Bacterial Solution in GGBS Concrete: A Sustainable Approach to Improving Properties

  • 期刊论文

  • 发表日期：

    2025年4月23日

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  • Nakul Gupta,
  • Arun Kumar Parashar,
  • Baljeet Yadav,
  • Saket Rusia,
  • Kuldeep K. Saxena,
  • C. Rakesh,
  • T. Srinivas

摘要

This research aimed to investigate the impacts of integrating a Bacillus cereus solution containing bacteria at optimal GGBS usage rates, with a portion of the cement substituted by GGBS. To manufacture M25 grade concrete, four distinct quantities of GGBS were employed as a substitute for cement: 5%, 10%, 15%, and 20%. Three distinct bacterial concentrations were employed to generate the bacterial solution: 10³, 10⁵, and 10⁸ cells/ml. Concrete that was augmented with a bacterial solution performed better mechanically than concrete that was made entirely of Ground Granulated Blast Furnace Slag (GGBS), according to the study. Additionally, water absorption was measured under both circumstances. The samples M10 demonstrated a sharp increase in the strength of around 12.88, 6.73 and 10.58% in compressive, flexural and split tensile strength as compared standard concrete at the age of 56 days. Mechanical strength was found to decrease as the GGBS percentage surpassed 10%. At a bacterial concentration of 10⁵ cells/ml and a 10% substitution of cement with GGBS, the peak flexural, split tensile, and compressive strengths achieved were 6.6 MPa, 3.08 MPa, and 46.69 MPa, respectively. The pattern of water absorption decreasing as bacterial concentration increased was also seen. The correlation analysis revealed a substantial association between compressive strength and water absorption. For the bacterial solution samples, the R² value was 0.8338, whereas for the GGBS samples it was 0.9044. Additionally, a dependable predictive association was found between compressive strength and UPV, with R² values of 0.8443 for GGBS samples and 0.7376 for samples containing bacteria, respectively.